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Reliability-Based Code Calibration of Pultruded Glass Fibre-Reinforced Polymer I-Section Beams Under End-Two-Flange and Interior-Two-Flange Web-Crippling Loading Cases 认领 引用
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作者 Andre Dias Martins Ângelo Palos Teixeira +1 位作者 Nuno Silvestre João Ramôa Correia 《Engineering》 SCIE EI CSCD 2026年第6期211-230,共20页
This paper presents a reliability-based code calibration procedure aimed at determining optimal partial safety factors to be employed in design rules for pultruded glass fibre-reinforced polymer(pGFRP)I-section beams,... This paper presents a reliability-based code calibration procedure aimed at determining optimal partial safety factors to be employed in design rules for pultruded glass fibre-reinforced polymer(pGFRP)I-section beams,susceptible to web-crippling,namely under end-two-flange(ETF)and interior-two-flange(ITF)loading cases with unfastened flanges.Following a comprehensive state-of-the-art literature overview regarding web-crippling of pGFRP beams,the description of a direct strength method(DSM)-based resistance model for the two web-crippling loading cases is presented.Next,attention is turned to the detailed description of the(structural)reliability-based code calibration procedure for both loading cases.This includes detailing all the necessary steps and pertinent data,encompassing the adopted probabilistic models for material prop-erties,loads,geometrical dimensions,and resistance model uncertainty.Then,the results obtained through the application of the code calibration procedure are presented,validated,and discussed.Lastly,the paper closes by presenting relevant concluding remarks,which include recommendations for the partial safety fac-tors to be applied in the resistance model for pGFRP I-beams under ETF and ITF loading cases. 展开更多
关键词 Pultruded glass fibre-reinforced polymers Web-crippling End-two-flange Interior-two-flange Structural safety Reliability-based code calibration Partial safety factors
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Probabilistic Approach of Coastal Defense Against Typhoon Attacks for Nuclear Power Plant 认领 引用 被引量：1
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作者 刘德辅 韩凤亭 +3 位作者 庞亮 李华军 谢波涛 王风清 《China Ocean Engineering》 SCIE EI 2010年第2期265-275,共11页
With the global warming and sea level rising, it is widely recognized that there is an increasing tendency of typhoon occurrence frequency and intensity. The defenses code against typhoon attacks for nuclear power pla... With the global warming and sea level rising, it is widely recognized that there is an increasing tendency of typhoon occurrence frequency and intensity. The defenses code against typhoon attacks for nuclear power plant should be calibrated because of the increasing threat of typhoon disaster and severe consequences. This paper discusses the probabilistic approach of definitions about ＂probable maximum typhoon＂ and ＂probable maximum storm surge＂ in nuclear safety regulations of China and has made some design code calibrations by use of a newly proposed Double Layer Nested Mtdti-objective Probability Model （DLNMPM）. 展开更多
关键词 typhoon nuclear power plant coastal engineering code calibration double layer nested multi-objective probability model
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Proposed Simplified Procedure for Safety Factor Scaling for Various Life Cycles 认领 引用
3
作者 Eliezer Shamir 《Journal of Civil Engineering and Architecture》 2014年第10期1317-1326,共10页
It is common to assume that structures are designed in view of 50 year life cycle as per Euro-Code 2 and other codes. In special cases, structures are designed in view of longer life cycle, such as bridges, important ... It is common to assume that structures are designed in view of 50 year life cycle as per Euro-Code 2 and other codes. In special cases, structures are designed in view of longer life cycle, such as bridges, important infrastructure facilities, important religious structures or in case of extended returning period of seismic event or floods. Beside issues of durability and maintenance aspects, this involves also the need to cover the probability of exceeding characteristic design live loads during the extended period, while keeping the same levels of the accepted risk that were assumed by the various codes, as good enough for the standard 50 year life cycle. Bearing in mind that design procedures, formulations, materials characteristic strengths and partial safety factors are used for these structures as per the existing codes, scaling of partial safety factors, or alternatively an additional ＂compensating＂ factor is required. A simplified approach and procedure to arrive at a reasonable calibration of the code safety factors based on 50 years to compensate for an extended life cycle, based upon structural reliability considerations, is proposed. 展开更多
关键词 Life cycle code calibration scaling safety factors target reliability factor.
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A digital background calibration algorithm of a pipeline ADC based on output code calculation 认领 引用 被引量：1
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作者 邵健健 李玮韬 +3 位作者 孙操 李福乐 张春 王志华 《Journal of Semiconductors》 EI CAS CSCD 2012年第11期110-114,共5页
This paper proposes a digital background calibration algorithm to correct linearity errors in a pipelined analog-to-digital converter（ADC）.The algorithm does not modify the analog circuit of pipelined stages and cal... This paper proposes a digital background calibration algorithm to correct linearity errors in a pipelined analog-to-digital converter（ADC）.The algorithm does not modify the analog circuit of pipelined stages and calibrates the raw conversion output by using a backend digital logic.Based on the analysis of the output codes,the calibration logic estimates the bit weight of each stage and corrects the outputs.An experimental 14-bit pipelined ADC is fabricated to verify the algorithm.The results show that INL errors drop from 20 LSB to 1.7 LSB,DNL errors drop from 2 LSB to 0.4 LSB,SNDR grows from 57 to 65.7 dB and THD drops from -58 to -81 dB.The linearity of the pipelined ADC is improved significantly. 展开更多
关键词 pipeline ADC output code calculation background calibration
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