[1]苏宁粉,周 颖,吕西林,等.增量动力分析中地震动强度参数的有效性研究[J].西安建筑科技大学学报(自然科学版),2016,48(06):846-852.[doi:10.15986/j.1006-7930.2016.06.012]
　SU Ningfen,ZHOU Ying,LÜ,et al.Study on the efficiency of intensity measures for incremental dynamic analysis[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2016,48(06):846-852.[doi:10.15986/j.1006-7930.2016.06.012]
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增量动力分析中地震动强度参数的有效性研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年06期
页码:
846-852
栏目:
出版日期:
2016-12-31

文章信息/Info

Title:
Study on the efficiency of intensity measures for incremental dynamic analysis
文章编号:
1006-7930(2016)06-0846-07
作者:
苏宁粉1; 2; 周 颖2; 吕西林2; 康灵果3
1．西安建筑科技大学土木工程学院，陕西 西安 710055；2．同济大学土木工程防灾国家重点实验室，上海 200092；3．华陆工程科技有限责任公司，陕西 西安 710065
Author(s):
SU Ningfen 1; 2;  ZHOU Ying2;  LÜ Xilin2;  KANG Lingguo3
1. School of Civil Engineering, Xiʹan Univ. of Arch. & Tech., Xi’an 710055, China;2. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;3. Hualu Engineering & Technology Company Limited, Xi’an 710065, China
关键词:
增量动力分析; 地震动强度参数; 有效性; 基于性能的地震工程
Keywords:
incremental dynamic analysis;  intensity measure;  efficiency;  performance-based earthquake engineering
分类号:
TU313.3；TU973.14
DOI:
10.15986/j.1006-7930.2016.06.012
文献标志码:
A
摘要:
分别对一6层规则框架、一规则超高层和一不规则超高层结构进行增量动力分析，以峰值加速度PGA、峰值速度PGV、峰值位移PGD、弹性加速度谱Sa(T1)、速度谱Sv(T1)、位移谱Sd(T1)、Cordova等提出的参数S*以及周颖等提出的参数S12和S123为地震动强度参数，所有楼层的最大层间位移角为工程需求参数，通过对数空间的线性回归，以系数R2为指标，对比分析这些参数的有效性．结果表明，反应谱参数的有效性均优于PGA；PGD有效性最差；对规则结构，S*的有效性高于Sa(T1)和PGA；对不规则结构，低于Sa(T1)但高于PGA；对考虑高阶振型影响的地震动强度参数，考虑振型数越多，有效性越高；对超高层结构，PGV的有效性最好；而对6层框架，PGV的有效性仅次于S*，显著高于其他参数．
 
Abstract:
The result of incremental dynamic analysis (IDA) is described by intensity measure (IM) and engineering demand parameter (EDP). Choosing different IM and EDP will get different IDA curves. The choice of IM has great effect on the result of IDA. In this paper, a six story regular reinforced concrete frame structure and two high-rise structures (one regular and one irregular) are taken as examples to conduct IDA. Nine IMs are selected. They are: (1) peak ground motion acceleration (PGA); (2) peak ground motion velocity (PGV); (3) peak ground motion displacement (PGD); (4) spectral acceleration at the structure’s first-mode period Sa(T1 ,ξ) (ξ is damping ratio); (5) spectral velocity at the structure’s first-mode period Sv(T1,ξ); (6) spectral displacement at the structure’s first-mode period Sd(T1,ξ); (7) S* proposed by Cordova; (8) S12 and (9) S123 proposed by Zhou and Su before. The maximum peak inter-story drift angle is selected as EDP. Through linear regression in logarithmic space, factor R2 is taken as indicators to check the efficiency of candidate IMs in the IDA. The results show that the elastic spectra based IMs are more efficient than PGA and PGD is the worst one. For regular structures, S* is more efficient than Sa(T1,ξ) and PGA. For irregular structures, S* is better than PGA but worse than Sa(T1,ξ). The efficiency of IMs that take higher modes influence into consideration depends on the numbers of considered modes. The more modes are involved, the more efficient the IM is. PGV is the most efficient IM for high-rise structure and the one second only to S* for the six-story frame structure.

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备注/Memo

备注/Memo:
收稿日期: 2016-03-03             修改稿日期：2016-11-09

基金项目: 国家自然科学基金资助项目(51408456)；西安建筑科技大学科技计划基金资助项目(RC1428)；西部建筑科技重点实验室人才基金资助项目

作者简介: 苏宁粉(1981－)，女，博士，讲师，主要从事高层结构抗震性能方面的研究．E-mail: suningfen@163.com

更新日期/Last Update: 2017-02-04