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Performance-based global reliability assessment of a high-rise frame-core tube structure subjected to multi-dimensional stochastic earthquakes 被引量:2
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作者 Liu Zhangjun Ruan Xinxin Liu Zixin 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2022年第2期395-415,共21页
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 motions.To this end,a proposed... 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 motions.To this end,a proposed modeling strategy of multi-dimensional stochastic earthquakes is addressed in this study.This improved seismic model has several merits that enable it to better provide seismic analyses of structures.Specifically,at first,the ground motion model is compatible with the design response spectrum.Secondly,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 components.Thirdly,the random function-based dimension-reduction representation is applied,by which seismic modeling is established,with three elementary random variables.Numerical simulations of multi-dimensional stochastic ground motions in a specific design scenario indicate the effectiveness of the proposed modeling strategy.Moreover,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 method.The 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. 展开更多
关键词 multi-dimensional stochastic ground motion dimension-reduction representation frame-core tube structure global dynamic reliability performance-based seismic design
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Application Analysis of Strengthened Story in Frame-Core Structures
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作者 苏原 陈传尧 李黎 《Journal of Southwest Jiaotong University(English Edition)》 2009年第4期309-313,共5页
Lateral deflection formulas are presented for analysis of the strengthened story applied to flame-core structures. For the framecore structures with top outriggers and with middle outriggers, the relationship between ... Lateral deflection formulas are presented for analysis of the strengthened story applied to flame-core structures. For the framecore structures with top outriggers and with middle outriggers, the relationship between stiffness characteristic parameters of frame and outriggers and the top drift of structures under different loads is analyzed. It is indicated that when stiffness characteristic parameter of frame is large, outrigger efficiency for top drift reduction is low, and the mutation of internal forces occurs; when the stiffness characteristic parameter of frame is less than 3, installing the strengthened story is advantageous to frame-core structures. 展开更多
关键词 Strengthened story frame-core structure OUTRIGGER Stiffness characteristic parameters
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Safety analysis of optimal outriggers location in high-rise building structures 被引量:3
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作者 ZHANG Jiet ZHANG Zhong-xian +2 位作者 ZHAO Wen-guang ZHU Hong-ping ZHOU Chun-sheng 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2007年第2期264-269,共6页
This paper presents the restraining moments of outriggers acting on the core wall and the equation of the horizontal top deflection based on a simplified outrigger model. The deformation compatibility conditions betwe... This paper presents the restraining moments of outriggers acting on the core wall and the equation of the horizontal top deflection based on a simplified outrigger model. The deformation compatibility conditions between outriggers and core wall as well as the finite rigidities of outriggers are also considered. One case study was carried out to analyze the horizontal top deflection and the mutation of the restraining moments caused by the variation of outrigger location. The results showed that the method adopted in the paper is simple and reasonable. Some conclusions are valuable to the safety design of high-rise building structures. 展开更多
关键词 High-rise building frame-core structure OUTRIGGER Internal force mutation Horizontal top deflection Safety
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