Earthquake Engineering and Resilience最新文献_第9页

Seismic response of a nuclear island building with base isolation considering the soil–structure interaction effect 考虑土-结构相互作用的核岛基础隔震建筑物地震反应

Earthquake Engineering and Resilience Pub Date : 2022-12-26 DOI: 10.1002/eer2.34

Xiuyun Zhu, Jingsheng Zhu, Rong Pan

{"title":"Seismic response of a nuclear island building with base isolation considering the soil–structure interaction effect","authors":"Xiuyun Zhu, Jingsheng Zhu, Rong Pan","doi":"10.1002/eer2.34","DOIUrl":"10.1002/eer2.34","url":null,"abstract":"This study aims to investigate the influence of soil–structure interaction (SSI) on the seismic response of a nuclear island (NI) building with base isolation. Hence, modal and dynamic time-history analyses of the NI building with base isolation based on different soil dynamic numerical models that are applicable for homogeneous and layered sites to consider the SSI effect were conducted. After a comparison analysis of natural frequencies, floor response spectra (FRS), and acceleration response of superstructure, the following results are obtained. (i) For homogeneous sites, the degrees of freedom of the horizontal translation and torsion of the NI building with base isolation calculated using different site dynamic numerical models have equivalent natural frequencies. For layered sites, the natural frequencies increase slightly with the improvement of the shear wave velocity of the upper layered soil. (ii) For homogeneous sites, FRS calculated by the massless foundation model is generally larger than those of the dynamic model proposed by the ASCE code and the viscoelastic artificial boundary site model. Both the spectral and peak values of horizontal FRS at a low frequency band calculated by considering the SSI effect are larger than those without the SSI effect. (iii) For layered sites, both the spectral and peak values of horizontal FRS at a low frequency band have an amplification effect compared with that of a homogeneous site. (iv) For layered sites, the calculated horizontal acceleration response does not have evident law that changes with the degree of hardness and softness of the upper soil. Therefore, the SSI effect for particular homogeneous and layered sites should be considered when calculating the seismic response of the NI building with base isolation.","PeriodicalId":100383,"journal":{"name":"Earthquake Engineering and Resilience","volume":"1 4","pages":"410-426"},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eer2.34","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74038183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Uncertainty quantification of seismic response of nuclear reactor building using a three-dimensional finite element model 核反应堆建筑地震反应的三维有限元模型不确定性量化

Earthquake Engineering and Resilience Pub Date : 2022-12-26 DOI: 10.1002/eer2.35

Byunghyun Choi, Akemi Nishida, Yinsheng Li, Tsuyoshi Takada

{"title":"Uncertainty quantification of seismic response of nuclear reactor building using a three-dimensional finite element model","authors":"Byunghyun Choi, Akemi Nishida, Yinsheng Li, Tsuyoshi Takada","doi":"10.1002/eer2.35","DOIUrl":"10.1002/eer2.35","url":null,"abstract":"After the 2011 Fukushima accident, seismic regulations for nuclear power plants (NPPs) in Japan have been strengthened to include countermeasures beyond design-basis events. Therefore, the importance of seismic probabilistic risk assessments is a topic that deserves attention. Generally, uncertainty quantification has been a crucial undertaking to assess the fragility of NPP buildings. This study aims to quantify realistic uncertainties using a three-dimensional (3D) finite element (FE) model to reflect the obtained results to the conventional simple sway-rocking (SR) model, and to develop a seismic fragility assessment method that considers 3D effects. As a first step, a 3D FE model was developed, and a seismic response analysis was performed to evaluate the seismic response of the buildings. For comparison, a seismic response analysis using the conventional SR model was performed. For input ground motions, 200 types of simulated seismic ground motions, generated using fault-rupture models were adopted. As a second step, two types of uncertainties are evaluated for uncertainty quantification: uncertainty for input seismic ground motion and that due to different locations of equipment installed on a floor. As a third step, to reflect the 3D effect on the uncertainty of the conventional SR model, were investigated the median and logarithm standard deviation of the response ratio (3D FE/SR) of the maximum acceleration of the two models. The results of epistemic uncertainty tended to increase with the increasing elevation level and the epistemic uncertainty result in the basement floor, where important equipment was installed, was relatively small. By reflecting this epistemic uncertainty into the conventional SR model, a more realistic fragility assessment that considers the 3D effect is expected by applying this result as epistemic uncertainty of the SR model of the fragility assessment.","PeriodicalId":100383,"journal":{"name":"Earthquake Engineering and Resilience","volume":"1 4","pages":"427-439"},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eer2.35","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77518323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forced vibration analysis model for pumped storage power station based on the 1D–3D coupling and pipe walls vibration 基于一维-三维耦合和管壁振动的抽水蓄能电站强迫振动分析模型

Earthquake Engineering and Resilience Pub Date : 2022-12-26 DOI: 10.1002/eer2.32

Xiuwei Yang, Jijian Lian, Haijun Wang, Ziliang Zhang, Yan Hu

{"title":"Forced vibration analysis model for pumped storage power station based on the 1D–3D coupling and pipe walls vibration","authors":"Xiuwei Yang, Jijian Lian, Haijun Wang, Ziliang Zhang, Yan Hu","doi":"10.1002/eer2.32","DOIUrl":"10.1002/eer2.32","url":null,"abstract":"Hydraulic vibration is a common phenomenon in pumped storage power stations (PSPS) and hydropower plants. Evaluating the performance of the PSPS and water conveyance system under the hydraulic vibration condition is significant for the safety of the electric power and the PSPS system. In this study, the one-dimensional (1D) and three-dimensional (3D) coupling model for the entire PSPS system is established based on the open-source software OpenFOAM and in-house C++ codes. The coupling data exchange is realized by writing and reading files. The coupling model is validated by comparing the results with the pure 1D method under small load disturbance conditions. The forced vibration source is modeled by the pipe walls vibration method in the 3D region, and the 1D method takes charge of other parts in the PSPS system. The combination of the pipe walls vibration and 1D–3D coupling could fully consider the incident and reflected characteristics of the pressure waves. The established model could evaluate the overall performance of the PSPS system under forced vibration. Sensitive analysis of the vibration magnitude is carried out, and the results are consistent with the theoretical analysis, demonstrating that the established model is applicable for the forced vibration analysis.","PeriodicalId":100383,"journal":{"name":"Earthquake Engineering and Resilience","volume":"1 4","pages":"393-409"},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eer2.32","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79516097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A statistical study of inelastic displacement ratio spectrum for existing structures 既有结构非弹性位移比谱的统计研究

Earthquake Engineering and Resilience Pub Date : 2022-12-23 DOI: 10.1002/eer2.31

Abhishek Banerjee, Vinay K. Gupta

{"title":"A statistical study of inelastic displacement ratio spectrum for existing structures","authors":"Abhishek Banerjee, Vinay K. Gupta","doi":"10.1002/eer2.31","DOIUrl":"10.1002/eer2.31","url":null,"abstract":"Displacement-based design has gained importance due to the emergence of the performance-based engineering, and it has now become desirable to estimate maximum (inelastic) displacements of structures for different levels of seismic hazard. Being closely related to damage, displacement (or drift) has become an important parameter necessary to meet various performance goals. It is considered convenient to estimate the inelastic displacement demand in a structure by multiplying the elastic displacement demand of the structure with a ratio called the inelastic displacement ratio. A comprehensive study is conducted for the parametric dependence of the inelastic displacement ratio in single-degree-of-freedom (SDOF) systems with known relative lateral strengths, on strong motion duration, earthquake magnitude, epicentral distance, and geological site conditions. This study is different from the earlier studies of similar types in that other governing parameters are kept fixed while the effects of variations in any particular parameter are studied. This study is based on the generation of ensembles of synthetic accelerograms from a database of 1274 accelerograms recorded in western USA for the pseudospectral acceleration (PSA) spectra of given source and site parameters. It is found that strong motion duration may influence the inelastic displacement ratios, depending on the hysteretic properties of the oscillator, in the case of durations not much longer than 10 s. Earthquake magnitude has a significant influence on these ratios for the SDOF systems of most periods, while site geology appears to be important for the stiff oscillators. A scaling model is also proposed in this study for estimating the inelastic displacement ratio spectrum from a normalized relative velocity spectrum of the ground motion. The proposed model indirectly includes the effects of various governing parameters and is shown to preserve the trends available from the direct study.","PeriodicalId":100383,"journal":{"name":"Earthquake Engineering and Resilience","volume":"1 4","pages":"454-479"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eer2.31","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82611850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic and collapse performance of a hybrid structure comprising steel frame with precast concrete shear walls and cladding panels 由钢框架、预制混凝土剪力墙和覆板组成的混合结构的抗震和倒塌性能

Earthquake Engineering and Resilience Pub Date : 2022-12-22 DOI: 10.1002/eer2.33

Hanqin Wang, Qing Jiang, Xun Chong, Yulong Feng, Junqi Huang

{"title":"Seismic and collapse performance of a hybrid structure comprising steel frame with precast concrete shear walls and cladding panels","authors":"Hanqin Wang, Qing Jiang, Xun Chong, Yulong Feng, Junqi Huang","doi":"10.1002/eer2.33","DOIUrl":"10.1002/eer2.33","url":null,"abstract":"A hybrid structure constructed by replacing external steel beams and columns in the steel frame (SF) to precast concrete shear walls with insulation (PCSWs) and precast concrete cladding panels (PCCPs, SFPCSW) is proposed in this paper to avoid the problem of columns protruding from walls and PCCPs directly connected with SF. Numerical models of the SF and SFPCSW structures are established in ETABS software based on an 18-story assembled steel residential building to investigate the seismic performance and collapse resistance capacity of SFPCSW. Time history analysis results show that the SFPCSW exhibits bending-shearing lateral deformation and has more uniform interstory drift ratios than the SF. Under major earthquakes (i.e., probability of exceedance of 2% in 50 years), the damage of SF is concentrated in stories 1–6; for SFPCSW, the plastic hinges mainly appear in the concrete beams between PCSWs at each story, and the damage in PCSWs and the internal frame is small. Using pinned connections between the steel beam and PCSW reduces the structural lateral stiffness and increases the earthquake load carried by the internal frame. The incremental dynamic analysis results show that the SF and SFPCSW have similar collapse resistance capacities.","PeriodicalId":100383,"journal":{"name":"Earthquake Engineering and Resilience","volume":"1 4","pages":"440-453"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eer2.33","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90747847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on numerical solution algorithm for real‐time hybrid simulation of high‐speed railway on suspension bridge 高速铁路悬索桥实时混合仿真数值求解算法研究

Earthquake Engineering and Resilience Pub Date : 2022-11-07 DOI: 10.1002/eer2.29

Weisi Guo, Rui Zhang, Jingyi Hu, Yang Wang

引用次数: 1

High‐frequency decay of Fourier spectra of strong motion acceleration and nonlinear site response 强运动加速度和非线性位置响应的傅里叶谱的高频衰减

Earthquake Engineering and Resilience Pub Date : 2022-11-03 DOI: 10.1002/eer2.28

V. Gičev, M. Trifunac

引用次数: 1

Seismic zoning maps of the National Capital Region (NCR) of India 印度国家首都地区(NCR)的地震区带图

Earthquake Engineering and Resilience Pub Date : 2022-11-03 DOI: 10.1002/eer2.21

I. D. Gupta, V. W. Lee, M. Trifunac

引用次数: 2

A cross validation‐Voronoi and entropy based adaptive sampling strategy for uncertainty quantification through hybrid simulation 一种交叉验证-基于Voronoi和熵的自适应采样策略，通过混合模拟进行不确定性量化

Earthquake Engineering and Resilience Pub Date : 2022-11-02 DOI: 10.1002/eer2.30

Guan-hua Yu, Cheng Chen, H. Hou, L. Tian, Weijie Xu

引用次数: 0

Digital twins for the underwater shake table array facility 水下震动台阵列设备的数字双胞胎

Earthquake Engineering and Resilience Pub Date : 2022-11-02 DOI: 10.1002/eer2.26

Ning Li, Zhong‐Xian Li

引用次数: 2