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Dynamic response characteristics and failure mechanisms of a high-steep bedding rock slope under successive earthquakes in a high-seismicintensity zone via discrete element method and shaking table tests 认领 引用
1
作者 SONG Dan-qing SHI Wan-peng +4 位作者 HUANG Kun-peng XIN Chun-lei LIU Xiao-li TIAN Yu-xin ZHANG Bing-hui 《Journal of Central South University》 SCIE EI CAS CSCD 2025年第11期4574-4592,共19页
Steep bedding slopes are widely distributed in Southwestern China’s mountainous regions and have complex seismic responses and instability risks,causing casualties and property losses.Considering the high-seismic-int... Steep bedding slopes are widely distributed in Southwestern China’s mountainous regions and have complex seismic responses and instability risks,causing casualties and property losses.Considering the high-seismic-intensity environment,the dynamic failure evolution and instability mechanism of high-steep bedding slopes are simulated via the discrete element method and shaking table test.The dynamic response characteristics and cumulative failure effects of slopes subjected to continuous ground motion are investigated.The results show that the dynamic response characteristics of slopes under continuous earthquakes are influenced by geological and topographic conditions.Elevation has a distinct impact on both the slope interior and surface,with amplification effects more pronounced on the surface.The weak interlayers have different influences on the dynamic amplification effect of slopes.Weak interlayers have dynamic magnification effects on the slope surface at relative elevations of 0-0.33 and 0.82-1.0 but have weakening effects between 0.33 and 0.82.Moreover,the weak interlayers also have controlling effects on the dynamic instability mode of slopes.The characteristics of intergranular contact failure,fracture propagation,and displacement distribution are analyzed to reveal the dynamic failure evolution and instability mechanism through the discrete-element model.The dynamic instability process of slopes includes three stages:fracture initiation(0-0.2g),fracture expansion(0.2g-0.3g),and sliding instability(0.3g-0.6g).This work can provide a valuable reference for the seismic stability and reinforcement of complex slopes. 展开更多
关键词 dynamic response characteristics failure mechanism high-steep bedding rock slope discrete element method high-seismic-intensity area
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Research on Dynamic Response Characteristics of 6 MW Spar-Type Floating Offshore Wind Turbine 认领 引用 被引量：5
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作者 MENG Long HE Yanping +2 位作者 ZHOU Tao ZHAO Yongsheng LIU Yadong 《Journal of Shanghai Jiaotong university(Science)》 EI 2018年第4期505-514,共10页
A 6 MW spar-type floating offshore wind turbine （FOWT） model is put forward and a fully coupled aero-hydro-servo-elastic time domain model is established in the fatigue, aerodynamics, structures and turbulence （FAS... A 6 MW spar-type floating offshore wind turbine （FOWT） model is put forward and a fully coupled aero-hydro-servo-elastic time domain model is established in the fatigue, aerodynamics, structures and turbulence （FAST） code. Influence rules of wind 10ad and wave load on the characteristics of 6 MW spar-type FOWT are investigated. Firstly, validation of the model is carried out and a satisfactory result is obtained. The maximal deviations of rotor thrust and power between simulation results and reference values are 4.54% and -2.74%, respectively. Then the characteristics, including rotor thrust, rotor power, out-of-plane blade deflection, tower base fore-aft bending moment, and mooring line tension, are researched. The results illustrate that the mean value of dynamic response characteristics is mainly controlled by the wind-induced action. For characteristics of tower base fore-aft bending moment and platform pitch motion, the oscillation is dominated by the wave-induced action during all conditions considered. For characteristics of out-of-plane blade tip deflection and mooring line tension, the oscillation is commanded by combination effect of wave and wind loads when the wind speed is lower than the rated wind speed （hereinafter referred to as below rated wind speed） and is controlled by the wave-induced action when the wind speed is higher than the rated wind speed （hereinafter referred to as above rated wind speed）. As to the rotor thrust and power, the oscillation is dominated by the wind induced action at below rated wind speed and by the combination action of wind and wave loads at above rated wind speed. The results should be useful to the detailed design and model basin test of the 6 MW spar-type FOWT. 展开更多
关键词 floating offshore wind turbine(FOWT) time domain response wind and wave loads dynamic response characteristics
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Numerical Investigation on Dynamic Response Characteristics of Fluid-Structure Interaction of Gas-Liquid Two-Phase Flow in Horizontal Pipe 认领 引用 被引量：1
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作者 王志伟 何炎平 +4 位作者 李铭志 仇明 黄超 刘亚东 王梓 《Journal of Shanghai Jiaotong university(Science)》 EI 2024年第2期237-244,共8页
Fluid-structure interaction(FSI)of gas-liquid two-phase fow in the horizontal pipe is investigated numerically in the present study.The volume of fluid model and standard k-e turbulence model are integrated to simulat... Fluid-structure interaction(FSI)of gas-liquid two-phase fow in the horizontal pipe is investigated numerically in the present study.The volume of fluid model and standard k-e turbulence model are integrated to simulate the typical gas-liquid two-phase fow patterns.First,validation of the numerical model is conducted and the typical fow patterns are consistent with the Baker chart.Then,the FSI framework is established to investigate the dynamic responses of the interaction between the horizontal pipe and gas-liquid two-phase fow.The results show that the dynamic response under stratified fow condition is relatively flat and the maximum pipe deformation and equivalent stress are 1.8 mm and 7.5 MPa respectively.Meanwhile,the dynamic responses induced by slug fow,wave fow and annular fow show obvious periodic fuctuations.Furthermore,the dynamic response characteristics under slug flow condition are maximum;the maximum pipe deformation and equivalent stress can reach 4mm and 17.5 MPa,respectively.The principal direction of total deformation is different under various flow patterns.Therefore,the periodic equivalent stress will form the cyclic impact on the pipe wall and affect the fatigue life of the horizontal pipe.The present study may serve as a reference for FSI simulation under gas-liquid two-phase transport conditions. 展开更多
关键词 gas-liquid two-phase flow volume of fluid model fluid-structure interaction(FSI) dynamic response characteristics
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Influence of pressure disturbance wave on dynamic response characteristics of liquid film seal for multiphase pump 认领 引用
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作者 Qing-Ping Li Jin-Ya Zhang +1 位作者 Jia-Xiang Zhang Yong-Xue Zhang 《Petroleum Science》 SCIE EI CAS CSCD 2024年第3期2048-2065,共18页
Slug flow or high GVF(Gas Volume Fraction)conditions can cause pressure disturbance waves and alternating loads at the boundary of mechanical seals for multiphase pumps,endangering the safety of multiphase pump units.... Slug flow or high GVF(Gas Volume Fraction)conditions can cause pressure disturbance waves and alternating loads at the boundary of mechanical seals for multiphase pumps,endangering the safety of multiphase pump units.The mechanical seal model is simplified by using periodic boundary conditions and numerical calculations are carried out based on the Zwart-Gerber-Belamri cavitation model.UDF(User Define Function)programs such as structural dynamics equations,alternating load equations,and pressure disturbance equations are embedded in numerical calculations,and the dynamic response characteristics of mechanical seal are studied using layered dynamic mesh technology.The results show that when the pressure disturbance occurs at the inlet,as the amplitude and period of the disturbance increase,the film thickness gradually decreases.And the fundamental reason for the hysteresis of the film thickness change is that the pressure in the high-pressure area cannot be restored in a timely manner.The maximum value of leakage and the minimum value of axial velocity are independent of the disturbance period and determined by the disturbance amplitude.The mutual interference between enhanced waves does not have a significant impact on the film thickness,while the front wave in the attenuated wave has a promoting effect on the subsequent film thickness changes,and the fluctuation of the liquid film cavitation rate and axial velocity under the attenuated wave condition deviates from the initial values.Compared with pressure disturbance conditions,alternating load conditions have a more significant impact on film thickness and leakage.During actual operation,it is necessary to avoid alternating load conditions in multiphase pump mechanical seals. 展开更多
关键词 Multiphase pump Liquid film seal Pressure disturbance wave Dynamic response characteristics
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Research on coupled thermo-hydro-mechanical dynamic response characteristics of saturated porous deep-sea sediments under vibration of mining vehicle 认领 引用 被引量：4
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作者 Wei ZHU Xinyu SHI +2 位作者 Rong HUANG Liyue HUANG Wenbo MA 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2021年第9期1349-1362,共14页
The excessive deformation of deep-sea sediments caused by the vibration of the mining machine will adversely affect the efficiency and safety of mining.Combined with the deep-sea environment,the coupled thermo-hydro-m... The excessive deformation of deep-sea sediments caused by the vibration of the mining machine will adversely affect the efficiency and safety of mining.Combined with the deep-sea environment,the coupled thermo-hydro-mechanical problem for saturated porous deep-sea sediments subject to the vibration of the mining vehicle is investigated.Based on the Green-Lindsay(G-L)generalized thermoelastic theory and Darcy’s law,the model of thermo-hydro-mechanical dynamic responses for saturated porous deep-sea sediments under the vibration of the mining vehicle is established.We obtain the analytical solutions of non-dimensional vertical displacement,excess pore water pressure,vertical stress,temperature,and change in the volume fraction field with the normal mode analysis method,and depict them graphically.The normal mode analysis method uses the canonical coordinate transformation to solve the equation,which can quickly decouple the equation by ignoring the modal coupling effect on the basis of the canonical mode.The results indicate that the vibration frequency has obvious influence on the vertical displacement,excess pore water pressure,vertical stress,and change in volume fraction field.The loading amplitude has a great effect on the physical quantities in the foundation,and the changes of the physical quantities increase with the increase in loading amplitude. 展开更多
关键词 deep-sea sediment thermo-hydro-mechanical dynamic generalized thermoelastic theory normal mode analysis dynamic response characteristic
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Dynamic response characteristics of a circular lined tunnel under anisotropy frost heave of overlying soil at the tunnel portal section in cold regions 认领 引用
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作者 ZHANG Shuo-cheng CHEN Wen-hua 《Journal of Mountain Science》 SCIE CSCD 2023年第5期1424-1440,共17页
The rapid development of traffic engineering in cold regions and its consequent problems need to be considered.In this paper,the dynamic response characteristics of the tunnel portal section in cold regions with harmo... The rapid development of traffic engineering in cold regions and its consequent problems need to be considered.In this paper,the dynamic response characteristics of the tunnel portal section in cold regions with harmonic load acting on the lining were studied in the frequency domain.The lining is in close contact with the frozen soil,and there is relative movement between the frozen and unfrozen soil due to the phase change.The analytical solution of the vibration of tunnel portal section caused by the harmonic load acting on the lining was derived under the consideration of the anisotropy frost heave of overlying soil.Based on the continuity conditions and boundary conditions,the undetermined coefficients were obtained,and the analytical solutions for different medium displacements and stresses of the cold-region tunnel system were acquired.The vertical pressure coefficient was equivalently simplified as a variable that could be used to replace the thickness of the overlying soil above the tunnel.The analysis of the parameter model shows that the change of the medium parameters(lining,frozen,and unfrozen soil)affects the circumferential stresses,the radial displacements and their peak frequencies of the soil.For example,the increase of density ratio of tunnel lining to frozen soil decreases the radial stresses of the frozen and unfrozen soil;the increase of volumetric frost heaving strain of the frozen soil increases the radial displacements of the frozen surface and decreases the stability of the frozen surface;the increasing of thickness of the frozen soil significantly reduces the radial displacement of unfrozen soil at dimensionless radius η=4.5 compared with that of frozen soil at η=1.5. 展开更多
关键词 Frost heave Tunnel portal section Relative movement Dynamic response characteristics Cold region
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The dynamic response characteristics of“ChangJiangKou II”shipwreck salvaging operation:Physical and numerical experiments 认领 引用
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作者 Dongrong Zhou Yiting Wang +2 位作者 Shangzhe Xin Lei Wang Tong Ge 《Journal of Ocean Engineering and Science》 SCIE CSCD 2025年第5期788-799,共12页
In this paper,the dynamic response characteristics of an ancient shipwreck“ChangJiangKou II”salvaging system during its salvaging operation,including off-bottom,lifting and off-surface stage,are numerically and expe... In this paper,the dynamic response characteristics of an ancient shipwreck“ChangJiangKou II”salvaging system during its salvaging operation,including off-bottom,lifting and off-surface stage,are numerically and experimentally investigated.In order to accurately predict the hydrodynamic performance of“ChangJiangKou II”and the crane barge during the salvaging operation,a specific designed coupled time-domain model combining wreck-soil interaction,lifting module and mooring module is established.A physical model-scale experiment for dynamic lifting of an underwater structure is performed to validate the coupled numerical model.The performance of the dynamic lifting process in different lifting speeds and different environmental conditions is analysed and discussed.The experimental results indicate that there is a tension distribution process during the lifting operation and an external disturbance to the shipwreck can lead to a large increase in lifting cable tensions. 展开更多
关键词 Salvaging operation Dynamic response characteristics Coupled time-domain model Physical experiments
Dynamic responses of steep bedding slope-tunnel system under coupled rainfall-seismicity:Shaking table test 认领 引用 被引量：4
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作者 Wanpeng Shi Jianwei Zhang +3 位作者 Danqing Song Xiaoli Liu Enzhi Wang Jianmin Zhang 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2025年第4期2072-2090,共19页
The coupling effects of rainfall,earthquake,and complex topographic and geological conditions complicate the dynamic responses and disasters of slope-tunnel systems.For this,the large-scale shaking table tests were ca... The coupling effects of rainfall,earthquake,and complex topographic and geological conditions complicate the dynamic responses and disasters of slope-tunnel systems.For this,the large-scale shaking table tests were carried out to explore the dynamic responses of steep bedding slope-tunnel system under the coupling effect of rainfall and earthquake.Results show that the slope surface and elevation amplification effect exhibit pronounced nonlinear change caused by the tunnel and weak interlayers.When seismic wave propagates to tunnels,the weak interlayers and rock intersecting areas present complex wave field distribution characteristics.The dynamic responses of the slope are influenced by the frequency,amplitude,and direction of seismic waves.The acceleration amplification coefficient initially rises and then falls as increasing seismic frequency,peaking at 20 Hz.Additionally,the seismic damage process of slope is categorized into elastic(2-3 m/s2),elastoplastic(4-5 m/s2)and plastic damage stages(≥6.5 m/s2).In elastic stage,ΔMPGA(ratio of acceleration amplification factor)increases with increasing seismic intensity,without obvious strain distribution change.In plastic stage,ΔMPGA begins to gradually plummet,and the strain is mainly distributed in the damaged area.The modes of seismic damage in the slope-tunnel system are mainly of tensile failure of the weak interlayer,cracking failure of tunnel lining,formation of persistent cracks on the slope crest and waist,development and outward shearing of the sliding mass,and buckling failure at the slope foot under extrusion of the upper rock body.This study can serve as a reference for predicting the failure modes of tunnel-slope system in strong seismic regions. 展开更多
关键词 Rainfall and earthquake coupling Steep bedding slope-tunnel system Dynamic response characteristics Slope and tunnel interaction Damage evolution
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THE DYNAMIC PLASTIC RESPONSE CHARACTERISTICS OF CIRCULAR BEAM 认领 引用
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作者 王建军 刘晓坤 陈百屏 《Applied Mathematics and Mechanics(English Edition)》 SCIE 1989年第7期599-609,共11页
In this paper the problem of a circular beam subjected to radial impact by a rigid mass at its lip in its own plane is investigaleil on the basis of rigid-perfectly plastic assumption. The analytical solution of the p... In this paper the problem of a circular beam subjected to radial impact by a rigid mass at its lip in its own plane is investigaleil on the basis of rigid-perfectly plastic assumption. The analytical solution of the particle velocities is obtained as the junction of travelling plastic hinge location. Ky analysing the solution, some special properties oj circular beam problem are found. 展开更多
关键词 THE DYNAMIC PLASTIC RESPONSE CHARACTERISTICS OF CIRCULAR BEAM
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Dynamic Characteristics and Simplified Numerical Methods of An All-Vertical-Piled Wharf in Offshore Deep Water 认领 引用 被引量：5
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作者 张华庆 孙熙平 +2 位作者 王元战 尹纪龙 王朝阳 《China Ocean Engineering》 SCIE EI CSCD 2015年第5期705-718,共14页
There has been a growing trend in the development of offshore deep-water ports in China. For such deep sea projects, all-vertical-piled wharves are suitable structures and generally located in open waters, greatly aff... There has been a growing trend in the development of offshore deep-water ports in China. For such deep sea projects, all-vertical-piled wharves are suitable structures and generally located in open waters, greatly affected by wave action. Currently, no systematic studies or simplified numerical methods are available for deriving the dynamic characteristics and dynamic responses of all-vertical-piled wharves under wave cyclic loads. In this article, we compare the dynamic characteristics of an all-vertical-piled wharf with those of a traditional inshore high-piled wharf through numerical analysis; our research reveals that the vibration period of an all-vertical-piled wharf under cyclic loading is longer than that of an inshore high-piled wharf and is much closer to the period of the loading wave. Therefore, dynamic calculation and analysis should be conducted when designing and calculating the characteristics of an all-vertical-piled wharf. We establish a dynamic finite element model to examine the dynamic response of an all-vertical-piled wharf under wave cyclic loads and compare the results with those under wave equivalent static load; the comparison indicates that dynamic amplification of the structure is evident when the wave dynamic load effect is taken into account. Furthermore, a simplified dynamic numerical method for calculating the dynamic response of an all-vertical-piled wharf is established based on the P-Y curve. Compared with finite element analysis, the simplified method is more convenient to use and applicable to large structural deformation while considering the soil non-linearity. We confirmed that the simplified method has acceptable accuracy and can be used in engineering applications. 展开更多
关键词 offshore deep water port all-vertical-piled wharf dynamic characteristics wave cyclic loads dynamic response simplified calculating methods
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Improving the Flexibility of Coal-Fired Power Plants via a Pre-Gasification Burner with Ultra-Enhanced Flame Stability 认领 引用
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作者 Hanlin Zhang Yixiang Shu +4 位作者 Xuebin Wang Xu Zhou Weicheng Li Haiguo Zheng Houzhang Tan 《Engineering》 SCIE EI CSCD 2026年第4期229-239,共11页
To maintain power grid stability under the increasing integration of renewable energy,the operational flexibility of thermal power plants is assuming growing significance.Flame stability and responsiveness on the comb... To maintain power grid stability under the increasing integration of renewable energy,the operational flexibility of thermal power plants is assuming growing significance.Flame stability and responsiveness on the combustion side under the extreme conditions of ultra-low loads and rapid load-change processes are the key to increasing the flexibility of thermal power plants.In this paper,a burner based on pre-gasification combustion technology is developed.The flexibility of the pre-gasification burner on a 5-MW pilot platform is investigated through simulation and performance verification.The results indicate that a single pre-gasification burner can maintain flame stability under a 9%load when burning bituminous coal,and a fuel load variation rate of 10%min-1 can be supported.The pre-gasification combustion has a faster stabilization rate compared with traditional combustion under coal flow and air flow disturbances.The application of pre-gasification burners in different classes of boiler is simulated,and the results indicate that the pre-gasification burner has the potential to improve the flexibility of industrial to full-scale coal-fired boilers. 展开更多
关键词 Flexibility of coal-fired power plant Pre-gasification burner Computational fluid dynamics Dynamic response characteristics Pilot test
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Seismic performance and damage identification of anti-slide piles under varying initial damage conditions using wavelet packet energy spectrum 认领 引用
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作者 LI Cheng ZHANG Chonglei 《Journal of Mountain Science》 SCIE CSCD 2025年第12期4446-4463,共18页
Anti-slide piles are commonly used to stabilise high and steep slopes in earthquake-prone areas in southwestern China.Herein,we investigate the impact of initial damage on the seismic performance of anti-slide piles.F... Anti-slide piles are commonly used to stabilise high and steep slopes in earthquake-prone areas in southwestern China.Herein,we investigate the impact of initial damage on the seismic performance of anti-slide piles.For this purpose,we selected a representative slope adjacent to the Jiuzhaigou Bridge in the Sichuan–Qinghai Railway;we employed a three-dimensional dynamic finite element method combined with the local stiffness reduction approach to simulate three different initial-damage scenarios:intact,slightly damaged and heavily damaged.The dynamic displacement,bending moment and shear stress responses of the piles were comprehensively analysed.Using wavelet packet energy spectrum(WPES)analysis,we introduced two indices:the damage index(DPERV)and its increment(|△DPERV|).The results showed that both the initial damage and seismic energy control the peak dynamic response of the piles.Specifically,high initial damage accelerates stiffness degradation,leading to large horizontal displacements,whereas intact piles sustain high bending moments and shear forces.The distribution of|△DPERV|along a pile reveals three post-earthquake performance stages(i.e.minor,moderate and severe),which agree well with the observed mechanical response characteristics and form the basis for targeted reinforcement strategies.The main innovation of this study is the combined use of initial-damage simulation with WPES analysis,thereby establishing a quantitative diagnostic framework(DPERV and|△DPERV|)for anti-slide piles.This framework determines the non-linear relationship between seismic response and damage evolution and provides a rapid,usable tool for health monitoring and post-earthquake decision-making in landslide-prone mountainous railway areas. 展开更多
关键词 Earthquake Anti-slide pile Dynamic response characteristics Damage identification
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Fluid−Structure Interaction of Two-Phase Flow Passing Through 90° Pipe Bend Under Slug Pattern Conditions 认领 引用 被引量：3
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作者 WANG Zhi-wei HE Yan-ping +4 位作者 LI Ming-zhi QIU Ming HUANG Chao LIU Ya-dong WANG Zi 《China Ocean Engineering》 SCIE EI CSCD 2021年第6期914-923,共10页
Numerical simulations of evolution characteristics of slug flow across a 90°pipe bend have been carried out to study the fluid−structure interaction response induced by internal slug flow.The two-phase flow patte... Numerical simulations of evolution characteristics of slug flow across a 90°pipe bend have been carried out to study the fluid−structure interaction response induced by internal slug flow.The two-phase flow patterns and turbulence were modelled by using the volume of fluid(VOF)model and the Realizable k−εturbulence model respectively.Firstly,validation of the CFD model was carried out and the desirable results were obtained.The different flow patterns and the time-average mean void fraction was coincident with the reported experimental data.Simulations of different cases of slug flow have been carried out to show the effects of superficial gas and liquid velocity on the evolution characteristics of slug flow.Then,a one-way coupled fluid-structure interaction framework was established to investigate the slug flow interaction with a 90°pipe bend under various superficial liquid and gas velocities.It was found that the maximum total deformation and equivalent stress increased with the increasing superficial gas velocity,while decreased with the increasing superficial liquid velocity.In addition,the total deformation and equivalent stress has obvious periodic fluctuation.Furthermore,the distribution position of maximum deformation and stress was related to the evolution of slug flow.With the increasing superficial gas velocity,the maximum total deformation was mainly located at the 90°pipe bend.But as the superficial liquid velocity increases,the maximum total deformation was mainly located in the horizontal pipe section.Consequently,the slug flow with higher superficial gas velocity will induce more serious cyclical impact on the 90°pipe bend. 展开更多
关键词 two-phase flow 90°pipe bend slug flow fluid−structure interaction dynamic response characteristics
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Shaking table test for reinforcement of soil slope with multiple sliding surfaces by reinforced double-row anti-slide piles 认领 引用 被引量：9
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作者 WU Hong-gang PAI Li-fang 《Journal of Mountain Science》 SCIE CSCD 2022年第5期1419-1436,共18页
Despite the continuous advancements of engineering construction in high-intensity areas,many engineering landslides are still manufactured with huge thrust force,and double-row piles are effective to control such larg... Despite the continuous advancements of engineering construction in high-intensity areas,many engineering landslides are still manufactured with huge thrust force,and double-row piles are effective to control such large landslides.In this study,large shaking table test were performed to test and obtain multi-attribute seismic data such as feature image,acceleration,and dynamic soil pressure.Through the feature image processing analysis,the deformation characteristics for the slope reinforced by double-row piles were revealed.By analyzing the acceleration and the dynamic soil pressure time domain,the spatial dynamic response characteristics were revealed.Using Fast Fourier Transform and half-power bandwidth,the damping ratio of acceleration and dynamic soil pressure was obtained.Following that,the Seism Signal was used to calculate the spectral displacement of the accelerations to obtain the regional differences of spectral displacement.The results showed that the overall deformation mechanism of the slope originates from tension failure in the soil mass.The platform at the back of the slope was caused by seismic subsidence,and the peak acceleration ratio was positively correlated with the relative pile heights.The dynamic soil pressure of the front row piles showed an inverted"K"-shaped distribution,but that of the back row piles showed an"S"-shaped distribution.The predominant frequency of acceleration was 2.16 Hz,and the main frequency band was 0.7-6.87 Hz;for dynamic soil pressure,the two parameters became 1.15 Hz and 0.5-6.59 Hz,respectively.In conclusion,dynamic soil pressure was more sensitive to dampening effects than acceleration.Besides,compared to acceleration,dynamic soil pressure exhibited larger loss factors and lower resonance peaks.Finally,back row pile heads were highly sensitive to spectral displacement compared to front row pile heads.These findings may be of reference value for future seismic designs of double-row piles. 展开更多
关键词 Double row anti-slide piles multislide surface landslide Shaking table test Acceleration Dynamic soil pressure Dynamic response characteristic
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