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Frontiers of Structural and Civil Engineering 2022年第3期16卷 281-301页

作者： Aydin HASSANZADEH Saber MORADI Department of Civil Engineering Ryerson UniversityToronto M5B 2K3Canada

This paper presents a seismic topology optimization study of steel braced frames with shape memory alloy(SMA)*** SMA-braced frames(SMA-BFs)with either Fe-based SMA or NiTi braces are determined in a performance-based seismic design *** topology optimization is performed on 5-and 10-story SMA-BFs considering the placement,length,and cross-sectional area of SMA bracing ***,strength,and performance-based design constraints are considered in the *** seismic response and collapse safety of topologically optimal SMA-BFs are assessed according to the FEMA P695 methodology.A comparative study on the optimal SMA-BFs is also presented in terms of total relative cost,collapse capacity,and peak and residual story *** results demonstrate that Fe-based SMA-BFs exhibit higher collapse capacity and more uniform distribution of lateral displacement over the frame height while being more cost-effective than NiTi braced *** addition to a lower unit price compared to NiTi,Fe-based SMAs reduce SMA material *** frames with Fe-based SMA braces,the SMA usage is reduced by up to 80%.The results highlight the need for using SMAs with larger recoverable strains.

关键词： topology optimization shape memory alloy Fe-based SMA steel braced frames performance-based seismic design collapse assessment

performance-based global reliability assessment of a high-rise frame-core tube structure subjected to multi-dimensional stochastic earthquakes

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Earthquake Engineering and Engineering Vibration 2022年第2期21卷 395-415页

作者： Liu Zhangjun Ruan Xinxin Liu Zixin School of Civil Engineering and Architecture Wuhan Institute of TechnologyWuhan 430074China Key Laboratory of Building Collapse Mechanism and Disaster Prevention Institute of Disaster PreventionChina Earthquake AdministrationSanhe 065201China

When evaluating the seismic safety and reliability of complex engineering structures,it is a critical problem to reasonably consider the randomness and multi-dimensional nature of ground *** this end,a proposed modeling strategy of multi-dimensional stochastic earthquakes is addressed in this *** improved seismic model has several merits that enable it to better provide seismic analyses of ***,at first,the ground motion model is compatible with the design response ***,the evolutionary power spectrum involved in the model and the design response spectrum are constructed accordingly with sufficient consideration of the correlation between different seismic ***,the random function-based dimension-reduction representation is applied,by which seismic modeling is established,with three elementary random *** simulations of multi-dimensional stochastic ground motions in a specific design scenario indicate the effectiveness of the proposed modeling ***,the multi-dimensional seismic response and the global reliability of a high-rise frame-core tube structure is discussed in detail to further illustrate the engineering applicability of the proposed *** analytical investigations demonstrate that the suggested stochastic model of multi-dimensional ground motion is available for accurate seismic response analysis and dynamic reliability assessment of complex engineering structures for performance-based seismic resistance design.

关键词： multi-dimensional stochastic ground motion dimension-reduction representation frame-core tube structure global dynamic reliability performance-based seismic design

Prediction of column failure modes based on artificial neural network

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Earthquake Engineering and Engineering Vibration 2023年第2期22卷 481-493页

作者： Wan Haitao Qi Yongle Zhao Tiejun Ren Wenjuan Fu Xiaoyan School of Civil Engineering and Architecture Henan UniversityKaifeng 475001China China Energy Engineering Group Guangdong Electric Power design Institute Co. Ltd.Guangzhou 510663China

To implement the performance-based seismic design of engineered structures,the failure modes of members must be *** classification method of column failure modes is analyzed using data from the Pacific Earthquake Engineering Research Center(PEER).The main factors affecting failure modes of columns include the hoop ratios,longitudinal reinforcement ratios,ratios of transverse reinforcement spacing to section depth,aspect ratios,axial compression ratios,and flexure-shear *** study proposes a data-driven prediction model based on an artificial neural network(ANN)to identify the column failure *** this study,111 groups of data are used,out of which 89 are used as training data and 22 are used as test data,and the ANN prediction model of failure modes is *** results show that the proposed method based on ANN is superior to traditional methods in identifying the column failure modes.

关键词： performance-based seismic design failure mode column artificial neural network prediction model

Recent progress of seismic research on tall buildings in China Mainland

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Earthquake Engineering and Engineering Vibration 2014年第S1期13卷 47-61页

作者： Lu Xilin Jiang Huanjun State Key Laboratory of Disaster Reduction in Civil Engineering Tongji University

As a result of rapid economic growth and urbanization in the past two decades,many tall buildings have been constructed in China Mainland,offering researchers and practitioners an excellent opportunity for research and practice in the field of structural engineering. This paper reviews progress by researchers throughout China Mainland on the seismic research of tall buildings,focusing on three major topics that impact the seismic performance of tall buildings. These are:(1) new types of steel-concrete composite structural members such as steel-concrete composite shear walls and columns,(2) earthquake resilient shear wall structures such as shear walls with replaceable structural components,self-centering shear walls and rocking walls,and(3) performance-based seismic design,including seismic performance index,performance level and design method. The paper concludes by presenting future research needs and directions in this field.

关键词： tall buildings steel-concrete composite member earthquake resilient structure performance-based seismic design

Correlation study between ground motion intensity measure parameters and deformation demands for bilinear SDOF systems

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Acta Seismologica Sinica(English Edition) 2006年第1期19卷 78-86页

作者：王建民朱晞 College of Civil Engineering and Architecture Beijing Jiaotong University Beijing 100044 China

The correlation between ground motion intensity measures （IM） and single-degree-of-freedom （SDOF） deformation demands is described in this study. Peak ground acceleration （APG）, peak ground velocity （VPG）, peak ground displacement （DPG）, spectral acceleration at the first-mode period of vibration [As（T1）] and ratio of VPG to APG are used as IM parameters, and the correlation is characterized by correlation coefficients p. The numerical results obtained by nonlinear dynamic analyses have shown good correlation between As（T1） or VPG and deformation demands. Furthermore, the effect of As（T1） and VPG as IM on the dispersion of the mean value of deformation demands is also investigated for SDOF systems with three different periods T=0.3 s, 1.0 s, 3.0 s respectively.

关键词： ground motion intensity measures performance-based seismic design non-linear dynamic analysis

Lateral load pattern in pushover analysis

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Earthquake Engineering and Engineering Vibration 2003年第1期2卷 99-108页

作者：孙景江 Tetsuro Ono 赵衍刚王威 Institate of Engineering Mechanics China Seismological BureauHarbin 150080China Professor Department.of Architecture Nagoya Institute of TechnologyNagoya 466-8555Japan Professor Department.of Architecture Nagoya Institute of TechnologyNagoya 466-8555Japan Associate Professor Institute of Engineering Mechanics China Seismological BureauHarbin 150080China Assistant Professor

The seismic capacity curves of three types of buildings including frame,frame-shear wall and shear wall ob- tained by pushover analysis under different lateral load patterns are compared with those from nonlinear time history analy- *** on the numerical results obtained a two-phase load pattern:an inverted triangle(first mode)load pattern until the base shear force reaches β times its maximum value,V_(max)followed by a(x/H)~α form,here β and α being some coeffi- cients depending on the type of the structures considered,is proposed in the paper,which can provide excellent approxima- tion of the seismic capacity curve for low-to-mid-rise shear type ***,it is shown both the two-phase load pattern proposed and the invariant uniform pattern can be used for low-to-mid-rise shear-bending type and low-rise bending type of *** suitable load patterns have been found for high-rise buildings.

关键词： pushover analysis performance-based seismic design lateral load pattern nonlinear time history analysis

seismic performance of moment resisting steel frame subjected to earthquake excitations

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Frontiers of Structural and Civil Engineering 2014年第1期8卷 19-25页

作者： Fadzli M. NAZRI Pang Yew KEN Disaster Research Nexus School of Civil Engineering Universiti Sains Malaysia Pulau Pinang 34950 Malaysia

This study presents static and dynamic assessments on the steel structures. Pushover analysis （POA） and incremental dynamic analysis （IDA） were run on moment resisting steel frames. The IDA study involves successive scaling and application of each accelerogram followed by assessment of the maximum response. Steel frames are subjected to nonlinear inelastic time history analysis for 14 different scaled ground motions, 7 near field and 7 far field. The results obtained from POA on the 3, 6 and 9 storey triangular lateral loading. Uniform loading shows that the steel frames show consistent results for both uniform and steel frames exhibits higher base shear than the triangular loading. The IDA results show that the far field ground motions has caused all steel frame design within the research to collapse while near field ground motion only caused some steel frames to collapse. The POA can be used to estimate the performance-based-seismic-design （PBSD） limit states of the steel frames with consistency while the IDA seems to be quite inconsistent. It is concluded that the POA can be consistently used to estimate the limit states of steel frames while limit state estimations from IDA requires carefully selected ground motions with considerations of important parameters.

关键词： incremental dynamic analysis (IDA) pushover analysis performance-based seismic design

ADVANCED ANALYSIS FOR seismic AND NON-seismic design OF BUILDING STRUCTURES

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ADVANCED ANALYSIS FOR SEISMIC AND NON-SEISMIC DESIGN OF BUIL...