期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到35,505篇文章
< 1 2 … 250 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Efficient Full-Range Nonlinear Analyses of Structural Systems Based on Heterogeneous Graph Learning 认领 引用 被引量：2
1
作者 Linghan Song Chen Wang Jiansheng Fan 《Engineering》 SCIE EI CSCD 2026年第4期320-336,共17页
Nonlinear analyses possess tremendous significance throughout the entire lifespans of civil structures.In recent years,the interest in leveraging deep learning(DL)to address the efficiency limitations of the tradition... Nonlinear analyses possess tremendous significance throughout the entire lifespans of civil structures.In recent years,the interest in leveraging deep learning(DL)to address the efficiency limitations of the traditional structural analysis methods has increased.However,full-range nonlinear analyses of different structures remain underresearched because of a lack of appropriate data representations and the failure to consider both internal structural information and external load conditions.A heterogeneous graph(HetG)representation scheme that can digitalize arbitrary structural systems with high fidelity is proposed in this study.Furthermore,a composite feature learning framework is developed to enable efficient full-range nonlinear analyses.This framework comprises two main components:①a heterogeneous graph neural network(GNN)-based module that encodes static features into embeddings with full structural semantics and②a sequence-to-sequence(Seq2Seq)module that predicts history-dependent responses using structural embeddings and external stimuli in an end-to-end manner.A computational model named structural analysis based on a graph neural network-nonlinear(StructGNN-N)is implemented based on the proposed methodology and is validated through numerical experiments involving real-world concrete structures.The results show that StructGNN-N successfully reproduces the full-range nonlinear responses of all nodes in the entire structure and exhibits excellent generalizability across structures with diverse topological designs and member configurations.Notably,the developed model achieves a computational efficiency level that is 1000 times greater than that of the traditional elastoplastic history analysis approach using the finite-element(FE)method.A parametric analysis and ablation studies demonstrate the effectiveness of the StructGNN-N architecture.Due to its superior accuracy and computational efficiency,the proposed method holds great potential for use in engineering applications,especially in the context of digital twins.This approach provides an inspiring path for simulating diverse engineering structures with accurate and comprehensive mechanical information in real time. 展开更多
关键词 Structural system analysis Heterogeneous graph-based deep learning Full-range response prediction Digital twin Smart structural engineering
暂未订购 下载PDF
The Application and Development of New Building Structural Systems in High-Rise Building Structures 认领 引用
2
作者 LEI Yanjun 《外文科技期刊数据库（文摘版）工程技术》 2026年第2期007-011,共5页
This study focuses on achieving structural safety, cost-effectiveness, and practicality in high-rise buildings, conducting an in-depth exploration of these evolving requirements while examining the practical applicati... This study focuses on achieving structural safety, cost-effectiveness, and practicality in high-rise buildings, conducting an in-depth exploration of these evolving requirements while examining the practical applications and development trends of innovative architectural structural systems. By synthesizing theoretical frameworks and engineering project experiences domestically and internationally, the research clearly demonstrates the significant advantages of novel structural systems in optimizing construction configurations and enhancing load-bearing capacity. Through comprehensive comparative analysis of existing structural designs, the study details improvements in seismic resistance, service life durability, and construction efficiency. The conclusions indicate that such structural systems substantially improve the overall load-bearing performance of high-rise buildings, strengthen structural stability and resistance capabilities, and offer substantial potential for energy conservation, reduced resource consumption, and accelerated construction timelines. The primary objective of this research is to introduce a groundbreaking approach to high-rise building structural design, advance progress in architectural engineering technology, and provide a solid theoretical foundation along with actionable recommendations for the widespread adoption of innovative structural systems. 展开更多
关键词 novel building structural system high-rise buildings load-bearing performance seismic performance energy conservation and environmental protection
暂未订购 下载PDF
Eocene Basins on the SE Tibetan Plateau:Markers of Minor Offset along the Xuelongshan–Diancangshan–Ailaoshan Structural System 认领 引用 被引量：8
3
作者 LIAO Cheng YANG Tiannan +10 位作者 XUE Chuandong LIANG Mingjuan XIN Di XIANG Kun JIANG Lili SHI Pengliang ZHU Wenbin WAN Liangchun TANG Jing YU Jing WU Pinglei 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2020年第4期1020-1041,共22页
The offset of geological bodies provides robust evidence of displacement along a fault or ductile shear zone.The amount of displacement along the Xuelongshan–Diancangshan–Ailaoshan structural system,southeastern Tib... The offset of geological bodies provides robust evidence of displacement along a fault or ductile shear zone.The amount of displacement along the Xuelongshan–Diancangshan–Ailaoshan structural system,southeastern Tibetan Plateau,is uncertain because of the lack of offset geological markers.This NNW–SSE-trending system is developed in three isolated metamorphic complexes and interjacent nonmetamorphosed rocks.They are expected to record similar post-Eocene strain,although their structural patterns should be distinct.Geological mapping in the area between the Xuelongshan and Diancangshan metamorphic complexes has revealed a small Eocene basin,the Madeng Basin,located to the west of the structural system.The sedimentary and volcanic successions of the Madeng Basin are comparable to those of the Jianchuan Basin,which is located to the east of the structural system.Zircon U–Pb geochronological and bulk geochemical data demonstrate that the volcanic rocks of both basins formed during 37–34 Ma and share the same geochemical features.These data suggest that the Madeng and Jianchuan basins previously constituted a single basin,with the distribution of high-K volcanic rocks in the basins defining an ENE–WSW-trending volcanic belt that shows a limited dextral offset of≤20 km across the Xuelongshan–Diancangshan–Ailaoshan structural system.Therefore,the northern segment of the structural system records no evidence of large-scale lateral movement/displacement.The results suggest that the Indochina block,which is bounded by the Xuelongshan–Diancangshan–Ailaoshan structural system to the east and the Sagaing Fault to the west,has not extruded southward as a whole but rather has been deformed by pervasive crustal shortening. 展开更多
关键词 offset marker Eocene basin Xuelongshan–Diancangshan–Ailaoshan structural system southeastern Tibetan Plateau India–Eurasia collision
暂未订购 下载PDF
Efficient Computational Method for the Non-Probabilistic Reliability of Linear Structural Systems 认领 引用 被引量：6
4
作者 Ruixing Wang Xiao jun Wang +1 位作者 Lei Wang Xianjia Chen 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2016年第3期284-299,共16页
The non-probabilistic reliability in higher dimensional situations cannot be calcu- lated efficiently using traditional methods, which either require a large amount of calculation or cause significant error. In this s... The non-probabilistic reliability in higher dimensional situations cannot be calcu- lated efficiently using traditional methods, which either require a large amount of calculation or cause significant error. In this study, an efficient computational method is proposed for the cal- culation of non-probabilistic reliability based on the volume ratio theory, specificMly for linear structural systems. The common expression for non-probabilistic reliability is obtained through formula derivation with the amount of computation considerably reduced. The compatibility be- tween non-probabilistic and probabilistic safety measures is demonstrated through the Monte Carlo simulation. The high efficiency of the presented method is verified by several numerical examples. 展开更多
关键词 non-probabilistic reliability linear structural system formula derivation compatibility high efficiency
暂未订购 下载PDF
Nonlinear finite-element-based structural system failure probability analysis methodology for gravity dams considering correlated failure modes 认领 引用 被引量：6
5
作者 胡江 马福恒 吴素华 《Journal of Central South University》 SCIE EI CAS CSCD 2017年第1期178-189,共12页
The structural system failure probability(SFP) is a valuable tool for evaluating the global safety level of concrete gravity dams.Traditional methods for estimating the failure probabilities are based on defined mathe... The structural system failure probability(SFP) is a valuable tool for evaluating the global safety level of concrete gravity dams.Traditional methods for estimating the failure probabilities are based on defined mathematical descriptions,namely,limit state functions of failure modes.Several problems are to be solved in the use of traditional methods for gravity dams.One is how to define the limit state function really reflecting the mechanical mechanism of the failure mode;another is how to understand the relationship among failure modes and enable the probability of the whole structure to be determined.Performing SFP analysis for a gravity dam system is a challenging task.This work proposes a novel nonlinear finite-element-based SFP analysis method for gravity dams.Firstly,reasonable nonlinear constitutive modes for dam concrete,concreteock interface and rock foundation are respectively introduced according to corresponding mechanical mechanisms.Meanwhile the response surface(RS) method is used to model limit state functions of main failure modes through the Monte Carlo(MC) simulation results of the dam-interface-foundation interaction finite element(FE) analysis.Secondly,a numerical SFP method is studied to compute the probabilities of several failure modes efficiently by simple matrix integration operations.Then,the nonlinear FE-based SFP analysis methodology for gravity dams considering correlated failure modes with the additional sensitivity analysis is proposed.Finally,a comprehensive computational platform for interfacing the proposed method with the open source FE code Code Aster is developed via a freely available MATLAB software tool(FERUM).This methodology is demonstrated by a case study of an existing gravity dam analysis,in which the dominant failure modes are identified,and the corresponding performance functions are established.Then,the dam failure probability of the structural system is obtained by the proposed method considering the correlation relationship of main failure modes on the basis of the mechanical mechanism analysis with the MC-FE simulations. 展开更多
关键词 gravity dam structural system failure probability nonlinear finite element response surface method computational platform
暂未订购 下载PDF
Intelligent vectorial surrogate modeling framework for multi-objective reliability estimation of aerospace engineering structural systems 认领 引用 被引量：4
6
作者 Da TENG Yunwen FENG +1 位作者 Junyu CHEN Cheng LU 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2024年第12期156-173,共18页
To improve the computational efficiency and accuracy of multi-objective reliability estimation for aerospace engineering structural systems,the Intelligent Vectorial Surrogate Modeling(IVSM)concept is presented by fus... To improve the computational efficiency and accuracy of multi-objective reliability estimation for aerospace engineering structural systems,the Intelligent Vectorial Surrogate Modeling(IVSM)concept is presented by fusing the compact support region,surrogate modeling methods,matrix theory,and Bayesian optimization strategy.In this concept,the compact support region is employed to select effective modeling samples;the surrogate modeling methods are employed to establish a functional relationship between input variables and output responses;the matrix theory is adopted to establish the vector and cell arrays of modeling parameters and synchronously determine multi-objective limit state functions;the Bayesian optimization strategy is utilized to search for the optimal hyperparameters for modeling.Under this concept,the Intelligent Vectorial Neural Network(IVNN)method is proposed based on deep neural network to realize the reliability analysis of multi-objective aerospace engineering structural systems synchronously.The multioutput response function approximation problem and two engineering application cases(i.e.,landing gear brake system temperature and aeroengine turbine blisk multi-failures)are used to verify the applicability of IVNN method.The results indicate that the proposed approach holds advantages in modeling properties and simulation performances.The efforts of this paper can offer a valuable reference for the improvement of multi-objective reliability assessment theory. 展开更多
关键词 Intelligent vectorial surrogate modeling Intelligent vectorial neural network Aerospace engineering structural systems Multi-objective reliability estimation Matrix theory
暂未订购 下载PDF
Relationship between gas reservoir distribution and structural system of upper Triassic Xujiahe Fm in the Sichuan Basin 认领 引用 被引量：2
7
作者 Liu Shu Ren Xingguo +4 位作者 Yao Shengxian Liu Ziping Ning Meng Wang Xin Huang Xiaohui 《Natural Gas Industry B》 2019年第3期220-235,共16页
The gas reservoir of Upper Triassic Xujiahe Fm in the Sichuan Basin is characterized by“accumulation in the early stage,entrapment in the middle stage and activation in the late stage”.In order to provide guidance f... The gas reservoir of Upper Triassic Xujiahe Fm in the Sichuan Basin is characterized by“accumulation in the early stage,entrapment in the middle stage and activation in the late stage”.In order to provide guidance for the prediction of hydrocarbon enrichment zone of Xujiahe Fm,we first plotted the regional structure map based on the 2D and 3D seismic merging data of the basin.Then,we displayed and described the structural characteristics by means of the 3D visualization technology of low-angle vertical backlight irradiation.In addition,the structural system was classified according to the dynamic direction of regional structure and the structural interrelationship,and the formation stages of the structure were confirmed.Finally,based on drilling and testing data,the hydrocarbon enrichment zone of Xujiahe Fm was predicted.And the following research results were obtained.First,five structural systems are developed in Xujiahe Fm in the Sichuan Basin,including EW-oriented arc structure,NE-oriented linear structure,NE-oriented arc structure,SN-oriented to NW-oriented brush structure and NW-oriented arc structure.Second,the EW-oriented arc structure is formed due to the uplift and extrusion of the northern section of Longmenshan thrust belt in the Indosinian period,successively developed in the Yanshanian and stabilized in the Himalayan period.And it is widely distributed in the basin.Third,the NE-oriented linear structure in the north of Western Sichuan Depression is resulted from the Anxian movement of Longmenshan thrust belt in the Indosinian period.Fourth,the NW-oriented arc structure before the Dabashan and the NE-oriented linear structure before the Huaying Mountain are stabilized in the Yanshanian and successively developed in the Himalayan period.Fifth,the SN-oriented structure in the Western Sichuan Depression is formed due to the extrusion of the southern section of Longmenshan thrust belt in the Himalayan period.Sixth,the combination of SN structure to the east of Longquanshan fold belt and NW-oriented linear structure in the basin is a brush structure belt with Jiangyou paleo-uplift as the mainstay,which is resulted from the extrusion of the southern section of Longmenshan thrust belt in the Himalayan period.Seventh,the high-yield wells are usually distributed in the arc anticlines of IndosinianeYanshanian superimposed with the faults of Himalayan period.The structures of the Hi-malayan period are usually dry traps,and their fracture development zones are mostly water producing layers.The Indosinian synclines are also ineffective traps even though they are uplifted to anticlines in the Himalayan period.In conclusion,the confirmation of structural system stages can provide a technical support for the prediction and description of hydrocarbon enrichment zone of Xujiahe Fm in the Sichuan Basin. 展开更多
关键词 Sichuan Basin Western Sichuan depression Late Triassic Xujiahe Fm Structural characteristics Structural system Formation stage Prediction of hydrocarbon enrichment zone
暂未订购 下载PDF
Parameter-dependent vibration-attenuation controller design for electro-hydraulic actuated linear structural systems 认领 引用 被引量：2
8
作者 Weng Falu Mao Weijie 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2012年第1期73-82,共10页
The problem of robust active vibration control for a class of electro-hydraulic actuated structural systems with time-delay in the control input channel and parameter uncertainties appearing in all the mass, damping a... The problem of robust active vibration control for a class of electro-hydraulic actuated structural systems with time-delay in the control input channel and parameter uncertainties appearing in all the mass, damping and stiffness matrices is investigated in this paper. First, by introducing a linear varying parameter, the nonlinear system is described as a linear parameter varying （LPV） model. Second, based on this LPV model, an LMI-based condition for the system to be asymptotically stabilized is deduced. By solving these LMIs, a parameter-dependent controller is established for the closed- loop system to be stable with a prescribed level of disturbance attenuation. The condition is also extended to the uncertain case. Finally, some numerical simulations demonstrate the satisfying performance of the proposed controller. 展开更多
关键词 structural system electro-hydraulic servo system robust stabilization vibration attenuation parameter-dependent controller
暂未订购 下载PDF
Active vibration-attenuation controller design for uncertain structural systems with input time-delay 认领 引用
9
作者 Ding Yuanchun Weng Falu +1 位作者 Tang Minkang Ge Ji 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2015年第3期477-486,共10页
The problem of active vibration control for uncertain linear structural systems with control forces input timedelay is investigated in this study.First,the original structural equation is converted to a state-space mo... The problem of active vibration control for uncertain linear structural systems with control forces input timedelay is investigated in this study.First,the original structural equation is converted to a state-space model by utilizing the matrix transformation.Second,according to the obtained model and a special Lyapunov functional,a sufficient condition is achieved for the closed-loop system to be stable with a prescribed level of disturbance attenuation.Then,in terms of solving these linear matrix inequalities（LMIs）,the state-feed controller is achieved to stabilize the structural system with the performance ‖z‖2<γ‖ω‖2.Third,by introducing the rank-1 vector to describe the system uncertainties,the uncertain system description is obtained,and the stabilizing condition is extended to the uncertain case.Finally,examples are given to show the effectiveness of the proposed methods. 展开更多
关键词 robust stabilization structural system vibration a
暂未订购 下载PDF
Safety estimation of structural systems via interval analysis 认领 引用 被引量：7
10
作者 Wang Xiaojun Wang Lei Qiu Zhiping 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2013年第3期614-623,共10页
Considering that the uncertain information has serious influences on the safety of structural systems and is always limited, it is reasonable that the uncertainties are generally described as interval sets. Based on t... Considering that the uncertain information has serious influences on the safety of structural systems and is always limited, it is reasonable that the uncertainties are generally described as interval sets. Based on the non-probabilistic set-theoretic theory, which is applied to measuring the safety of structural components and further combined with the branch-and-bound method for the probabilistic reliability analysis of structural systems, the non-probabilistic branch-and-bound method for determining the dominant failure modes of an uncertain structural system is given. Meanwhile, a new system safety measuring index obtained by the non-probabilistic set-theoretic model is investigated. Moreover, the compatibility between the classical probabilistic model as well as the proposed interval-set model will be discussed to verify the physical meaning of the safety measure in this paper. Some numerical examples are utilized to illustrate the validity and feasibility of the developed method. 展开更多
关键词 Interval analysis Non-probabilistic branch-and-bound method Non-probabilistic set-theoretic measure Structural reliability
暂未订购 下载PDF
Structural Design Conception and Analysis for the Structural System of Large Flexible Airship 认领 引用 被引量：8
11
作者 高海健 陈务军 付功义 《Journal of Shanghai Jiaotong university(Science)》 EI 2010年第6期756-761,共6页
Nine kinds of structure systems were proposed for the flexible airship according to the inherent structural characteristics. On the basis of equilibrium configuration of the oating airship subjected to the ascent heli... Nine kinds of structure systems were proposed for the flexible airship according to the inherent structural characteristics. On the basis of equilibrium configuration of the oating airship subjected to the ascent helium buoyancy and gravity,the structural analysis procedure was developed and the computation models were presented for the airship. Then the systematic numerical analysis was carried out for a 25 m long airship,the comparison of principal stress of envelope was performed between the nonlinear numerical analysis result and the engineering elastic theory result. The structural performances were evaluated thoroughly. Finally,the reasonable structural systems were proposed. Accordingly,the results herein were valuable to structural design for flexible airship especially for large flexible airship. 展开更多
关键词 flexible airship structure system equilibrium configuration
暂未订购 下载PDF
IMPROVED STRATIFIED SAMPLING MONTE CARLO METHOD TO ANALYZE RELIABILITY OF STRUCTURAL SYSTEMS 认领 引用 被引量：1
12
作者 Li Qiang Feng Yuansheng 《Chinese Journal of Aeronautics》 CAS 1996年第1期13-20,共8页
A stratified sampling Monte Carlo method to analyze the reliability of structural systems is presented. Introducing a small exploratory simulation, this method overcomes the difficulties for getting the systematic sam... A stratified sampling Monte Carlo method to analyze the reliability of structural systems is presented. Introducing a small exploratory simulation, this method overcomes the difficulties for getting the systematic sampling probability of all the strata. Several useful and efficient stratification methods are given and the strategies of stratification and simulation are studied. A general conclusion has been presented corresponding to actual engineering structures. The strict theoretical proof has been given,and it is especially effective to solve probabilistic integration. Statistic error of evaluating failure probability is reduced obviously. Especially in highly non-linear and nonreonvex problems, it is more accurate than other methods. Compared with other variance reduction techniques, this method can obtain a more obvious variance reduction and an increased sampling efficiency. Moreover, without strict limiting condition, it is convenient to use. This method is especially suitable to solve the reliability problem of structural systems with multiple failure modes and highly non-linear safety margin equations. 展开更多
关键词 structural reliability strata sampling Monte Carlo method
暂未订购 下载PDF
Reliability Analysis for Offshore Platform Structural Systems 认领 引用 被引量：1
13
作者 Deng, HZ Sun, Q 《China Ocean Engineering》 SCIE EI 1997年第1期1-10,共10页
A system reliability estimation method for spatial jacket platforms is developed in this paper. The jacket platform is modeled into three-dimensional assembly of spatial beam and plate elements in Finite Element Metho... A system reliability estimation method for spatial jacket platforms is developed in this paper. The jacket platform is modeled into three-dimensional assembly of spatial beam and plate elements in Finite Element Method (FEM). The limit failure states correspond to collapse of a series of structural members which are identified by engineering design criteria. In this paper the following aspects are taken into account: the punching shear and buckling failures in member failure modes for the tubular joints and tubular columns respectively; incremental loading approach for establishment of the safety margin equations of system failure; the algorithm of enumerating significant failure modes for the structural systems and other concepts, such as the false failure mode and the virtual limit state. The final work is devoted to the reliability analysis for a practical jacket platform presently put into operation on the Bohai Sea. The computed results shows that method suggested in this paper is feasible and effective for the evaluation of the system reliability of offshore platforms. 展开更多
关键词 offshore structures system reliability analysis spatial jacket platform
暂未订购 下载PDF
Development of Optimal Structural System for Hybrid Cable-Stayed Bridges Using Ultra High Performance Concrete 认领 引用 被引量：1
14
作者 Hee Seok Kim Young Jin Kim +1 位作者 Won Jong Chin Hyejin Yoon 《Engineering（科研）》 2013年第9期720-728,共9页
This study developed an optimal structural system for the hybrid cable-stayed bridge expected to have a durable lifetime of 200 years and of which major structural members are made of ultra high performance concrete (... This study developed an optimal structural system for the hybrid cable-stayed bridge expected to have a durable lifetime of 200 years and of which major structural members are made of ultra high performance concrete (UHPC) with 200 MPa-class compressive strength. This innovative cable-stayed bridge system makes it possible to reduce each of the construction and maintenance costs by 20% compared to the conventional concrete cable-stayed bridge by improving significantly the weight and durability of the bridge. Therefore, detail design is carried out considering a real 800 m cable-stayed bridge and the optimal structure of the hybrid cable-stayed bridge is proposed and verified. 展开更多
关键词 Hybrid Cable-Stayed Bridge Ultra High Performance Concrete (UHPC) Optimal Structural System Durability
暂未订购 下载PDF
Structural Systems Composed of Concentric Hoops and Designed for Lightweight Domes of Large Spans 认领 引用
15
作者 Janusz Rebielak 《Journal of Civil Engineering and Architecture》 2014年第9期1121-1128,共8页
The paper presents a selected group of tension-strut structural systems designed for the construction of lightweight dome covers of large spans, which can be comparatively easy to assembly and have rises of which can ... The paper presents a selected group of tension-strut structural systems designed for the construction of lightweight dome covers of large spans, which can be comparatively easy to assembly and have rises of which can be relatively small. This will allow significant decrease costs of erection and maintenance of objects covered by these roof structures. The proposed systems have been obtained from the results of suitable transformations of a chosen type of double-layer space frame and an appropriate arrangement of tetrahedron modules in the space of each of the newly designed type of the structural system. All these systems are built by means of concentric hoops having their own integral spatial stiffness obtained after an appropriate pre-stressing. Particular hoops can be mounted on the ground level and then one by one will be hoisted to the designed positions where they will be connected by means of special sets of the tension members. Due to these structural features, the assembly process of each system should be relatively simple, fast and not expensive. The whole tension-strut structure has to be connected to the compression perimeter ring and suitably pre-stressed. There are presented visualizations of the proposed systems prepared on the basis of the appropriate numerical models especially defined for each particular structure. 展开更多
关键词 Roof cover dome structure structural system pre-stressing tension-strut structure.
暂未订购 下载PDF
Investigation Responses of the Diagrid Structural System of High-rise Buildings Equipped with Tuned Mass Damper Using New Dynamic Method 认领 引用 被引量：1
16
作者 Mansour Ghalehnovi Arash Karimipour +1 位作者 Mahmoud Edalati Mehdi Barani 《Journal of Building Material Science》 CAS 2019年第2期25-45,共21页
Due to the shortage of land in cities and population growth,the significance of high rise buildings has risen.Controlling lateral displacement of structures under different loading such as an earthquake is an importan... Due to the shortage of land in cities and population growth,the significance of high rise buildings has risen.Controlling lateral displacement of structures under different loading such as an earthquake is an important issue for designers.One of the best systems is the diagrid method which is built with diagonal elements with no columns for manufacturing tall buildings.In this study,the effect of the distribution of the tuned mass damper(TMD)on the structural responses of diagrid tall buildings was investigated using a new dynamic method.So,a diagrid structural systems with variable height with TMDs was solved as an example of structure.The reason for the selection of the diagrid system was the formation of a stiffness matrix for the diagonal and angular elements.Therefore,the effect of TMDs distribution on the story drift,base shear and structural behaviour were studied.The obtained outcomes showed that the TMDs distribution does not significantly affect on improving the behaviour of the diagrid structural system during an earthquake.Furthermore,the new dynamic scheme represented in this study has good performance for analyzing different systems.Abbreviation:TMD-tuned mass damper;SATMD-semiactive-tuned mass dampers;MDOF-multiple degrees of freedom;mi-mass of ith story of the building;ci-damping coefficient of the ith story of the building;ki-stiffness of ith story of the building;xi-displacement of the ith story of the building;md-mass of damper;cd-damping coefficient of the damper;kd-stiffness of damper;xd-displacement of TMD;Mi-generalized mass of the ith normal mode;Ci-generalized damping of the ith normal mode;Ki-generalized stiffness of the ith normal mode;Ki(t)-generalized load of the ith normal mode;Yi(t)-generalized displacement of the ith normal mode;[M]-matrices of mass;[C]-matrices of damping;{P(t)}-consequence external forces;Ni(τ)-interpolation functions;[Ai]-mechanical properties of the structure. 展开更多
关键词 Base shear Diagrid structural system Dynamic methods Story drift The tuned mass damper Tall building
暂未订购 下载PDF
THEORETICAL MODEL AND NUMERICAL METHOD ON ONLINE IDENTIFICATION OF DYNAMICAL CHARACTERISTICS OF STRUCTURAL SYSTEM 认领 引用
17
作者 姚志远 汪凤泉 ZHANGJing-hui 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2004年第8期957-962,共6页
An online method of identification of dynamic characteristics only using measured ambient response of structural dynamic system is widely focused on.The Ibrahim and ARMA (AutoRegressive Moving Average) methods are bas... An online method of identification of dynamic characteristics only using measured ambient response of structural dynamic system is widely focused on.The Ibrahim and ARMA (AutoRegressive Moving Average) methods are basic identification methods.A model on dynamic system suffered by random ambient excitation was researched into, and a subspace decomposition method being different from traditional harmonic retrieval method was introduced.Robustness and effectiveness of this approach on identification of vibration characteristics are demonstrated on numerical experiment. 展开更多
关键词 modal identification system identification structure dynamic system
暂未订购 下载PDF
AN INSTRUCTURAL SYSTEM MODEL OF COASTAL MANAGEMENT TO THE WATER RELATED HAZARDS IN CHINA 认领 引用
18
作者 CHEN Xiaoling 《Geo-Spatial Information Science》 EI 2001年第1期56-61,共6页
Coastal lowlands have large areas of hazard impact and relatively low capacity of prevention to the water related hazards,which have been indicated by the wide_spread flood hazards,high percentages of land with high f... Coastal lowlands have large areas of hazard impact and relatively low capacity of prevention to the water related hazards,which have been indicated by the wide_spread flood hazards,high percentages of land with high flood vulnerability.Increasing population pressure and the shift of resources exploitation from land to sea will force more and more coastal lowlands to be developed in the future,further enhancing the danger of water_related hazards.In this paper,the coastal lowlands in the northern Jiangsu province,China,were selected as a case study.The Interpretation Structural Model (ISM) was employed to analyze the direct and indirect impacts among the elements within the system,and thereby,to identify the causal elements,middle linkages,their expressions,and relations. 展开更多
关键词 water-related hazard hazard-management system interpretation structure model
暂未订购 下载PDF
Investigation of Structural System Safety 认领 引用
19
作者 Cemal Eyyubov Mehmet Hasnalbant Isa Eyyubov 《Journal of Civil Engineering and Architecture》 2018年第8期586-604,共19页
In order to investigate the behavior of buildings and engineering structures during earthquakes, based on the data of seismic observation devices mounted on constructions with typical characteristics, results of inves... In order to investigate the behavior of buildings and engineering structures during earthquakes, based on the data of seismic observation devices mounted on constructions with typical characteristics, results of investigating the change of mechanical properties of building structural system over time and the results of examination of structural rigidity and safety change over time, depending on the dynamic characteristics of the building, determined by experimental investigations made at intervals are mentioned in this article. In addition, evaluation of earthquake acceleration acting on structures due to earthquake-induced damage characteristics of buildings and engineering constructions which are made earthquake resistant is also included here. 展开更多
关键词 Earthquake intensity macro seismic investigation structural system safety rigidity ground acceleration.
暂未订购 下载PDF
Sensitivity analysis for axis rotation diagrid structural systems according to brace angle changes 认领 引用 被引量：2
20
作者 Jae-Kwang Yang Long-Yang Li Sung-Soo Park 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2017年第4期783-791,共9页
General regular shaped diagrid structures can express diverse shapes because braces are installed along the exterior faces of the structures and the structures have no columns. However, since irregular shaped structur... General regular shaped diagrid structures can express diverse shapes because braces are installed along the exterior faces of the structures and the structures have no columns. However, since irregular shaped structures have diverse variables, studies to assess behaviors resulting from various variables are continuously required to supplement the imperfections related to such variables. In the present study, materials elastic modulus and yield strength were selected as variables for strength that would be applied to diagrid structural systems in the form of Twisters among the irregular shaped buildings classified by Vollers and that affect the structural design of these structural systems. The purpose of this study is to conduct sensitivity analysis for axial rotation diagrid structural systems according to changes in brace angles in order to identify the design variables that have relatively larger effects and the tendencies of the sensitivity of the structures according to changes in brace angles and axial rotation angles. 展开更多
关键词 sensitivity analysis axial rotation-diagrid structure lateral behaviors
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 250 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈