延性抗震设计理念的发展及应用研究综述
TU318; 延性抗震设计旨在通过结构发生较大弹塑性变形来降低结构地震响应.这一抗震设计理念广泛应用于大多数国家抗震规范中,其核心思路是通过使用强度折减系数对设防地震反应谱进行折减,使结构通过非弹性变形耗散地震能量.强度折减系数主要由延性折减系数和结构超强系数决定.同时,能力设计法是实现延性抗震的主要工具,该方法要求体系内的非延性构件在延性构件进入非线性阶段前后都保持弹性,以实现整个结构体系的延性设计.通过梳理延性抗震设计理念的研究历史,简要介绍了延性系数、结构周期、场地条件、阻尼比等因素对延性折减系数的影响,阐述了现有强度折减系数的组成和计算方法.最后,总结了中国、美国、欧洲、日本抗震规范中...
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| Published in | 东南大学学报（自然科学版） Vol. 55; no. 1; pp. 30 - 40 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
同济大学土木工程防灾减灾全国重点实验室,上海 200092
2025
同济大学土木工程学院,上海 200092%同济大学土木工程学院,上海 200092%华诚博远工程技术集团有限公司,北京 100040 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-0505 |
| DOI | 10.3969/j.issn.1001-0505.2025.01.004 |
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| Abstract | TU318; 延性抗震设计旨在通过结构发生较大弹塑性变形来降低结构地震响应.这一抗震设计理念广泛应用于大多数国家抗震规范中,其核心思路是通过使用强度折减系数对设防地震反应谱进行折减,使结构通过非弹性变形耗散地震能量.强度折减系数主要由延性折减系数和结构超强系数决定.同时,能力设计法是实现延性抗震的主要工具,该方法要求体系内的非延性构件在延性构件进入非线性阶段前后都保持弹性,以实现整个结构体系的延性设计.通过梳理延性抗震设计理念的研究历史,简要介绍了延性系数、结构周期、场地条件、阻尼比等因素对延性折减系数的影响,阐述了现有强度折减系数的组成和计算方法.最后,总结了中国、美国、欧洲、日本抗震规范中延性设计的应用情况. |
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| AbstractList | TU318; 延性抗震设计旨在通过结构发生较大弹塑性变形来降低结构地震响应.这一抗震设计理念广泛应用于大多数国家抗震规范中,其核心思路是通过使用强度折减系数对设防地震反应谱进行折减,使结构通过非弹性变形耗散地震能量.强度折减系数主要由延性折减系数和结构超强系数决定.同时,能力设计法是实现延性抗震的主要工具,该方法要求体系内的非延性构件在延性构件进入非线性阶段前后都保持弹性,以实现整个结构体系的延性设计.通过梳理延性抗震设计理念的研究历史,简要介绍了延性系数、结构周期、场地条件、阻尼比等因素对延性折减系数的影响,阐述了现有强度折减系数的组成和计算方法.最后,总结了中国、美国、欧洲、日本抗震规范中延性设计的应用情况. |
| Abstract_FL | Ductile seismic design aims to reduce structural seismic responses by allowing significant elastoplas-tic deformation of structures.This seismic design concept is widely adopted in the seismic codes of most coun-tries.The core idea is to employ a strength reduction factor to reduce the precautionary earthquake response spectrum and enable the structure to dissipate seismic energy through inelastic deformation.The strength reduc-tion factor is primarily determined by the ductility reduction factor and the structural overstrength factor.Mean-while,the capacity design method is a main tool for ductile seismic design,which requires non-ductile mem-bers to remain elastic both before and after ductile members subjected to nonlinear deformation,in order to achieve a ductile design of structure.Reviewing the research history of ductile seismic design,the effects of factors such as ductility factor,structural period,site conditions,and damping ratio on the ductility reduction factor are briefly introduced.The composition and calculation methods of the strength reduction factors are also elaborated.Finally,applications of the ductile design in the seismic codes of China,the United States,Europe and Japan are summarized. |
| Author | 项平 罗旭亮 王立军 贾良玖 |
| AuthorAffiliation | 同济大学土木工程防灾减灾全国重点实验室,上海 200092;同济大学土木工程学院,上海 200092%同济大学土木工程学院,上海 200092%华诚博远工程技术集团有限公司,北京 100040 |
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| Author_FL | XIANG Ping WANG Lijun JIA Liangjiu LUO Xuliang |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| Keywords | 延性折减系数 ductile seismic design capacity design method ductility reduction factor 延性抗震设计 抗震设计规范 strength reduction factor seismic design code 能力设计法 强度折减系数 |
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| Publisher | 同济大学土木工程防灾减灾全国重点实验室,上海 200092 同济大学土木工程学院,上海 200092%同济大学土木工程学院,上海 200092%华诚博远工程技术集团有限公司,北京 100040 |
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| Title | 延性抗震设计理念的发展及应用研究综述 |
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