[1]唐洋洋,李英民,姜宝龙,等.山地掉层结构扭转效应控制参数的讨论[J].地震工程与工程振动,2022,42(06):122-128.[doi:10.13197/j.eeed.2022.0613]
　TANG Yangyang,LI Yingmin,JIANG Baolong,et al.Study on control parameters of torsional effect of the structure supported by foundations with different elevations[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2022,42(06):122-128.[doi:10.13197/j.eeed.2022.0613]
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山地掉层结构扭转效应控制参数的讨论
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《地震工程与工程振动》[ISSN:/CN:]

卷:
42
期数:
2022年06期
页码:
122-128
栏目:
第十一届全国地震工程学术会议专题
出版日期:
2022-12-31

文章信息/Info

Title:
Study on control parameters of torsional effect of the structure supported by foundations with different elevations
作者:
唐洋洋1; 2;  李英民1; 3;  姜宝龙1;  姬淑艳1; 4
1. 重庆大学 土木工程学院, 重庆 400045;
2. 重庆市建筑科学研究院有限公司, 重庆 400042;
3. 工程结构抗震防灾重庆市重点实验室, 重庆 400045;
4. 重庆大学 管理科学与房地产学院, 重庆 400045
Author(s):
TANG Yangyang1; 2;  LI Yingmin1; 3;  JIANG Baolong1;  JI Shuyan1; 4
1. School of Civil Engineering, Chongiqng University, Chongqing 400045, China;
2. Chongqing Construction Science Research Institute Co., Ltd., Chongqing 400042, China;
3. Key Laboratory of Earthquake Resistance and Disaster Prevention for Engineering Structures, Chongqing University, Chongqing 400045, China;
4. School of Management Science and Real Estate, Chongqing University, Chongqing 400045, China
关键词:
掉层结构; 扭转效应; 控制参数; 刚心; 偏心率
Keywords:
structure supported by foundations with different elevations; torsional effect; control parameter; stiffness center; eccentricity ratio
分类号:
TU311.3
DOI:
10.13197/j.eeed.2022.0613
摘要:
不等高基础嵌固的山地掉层结构在地震作用中存在难以避免的扭转效应，合理控制参数的选择在扭转效应研究中至关重要。文中对山地掉层结构扭转效应研究中的基本控制参数进行了总结，介绍了刚心的不同定义，对比了不同定义的刚心对应的偏心率与掉层结构扭转效应的关系，并通过对系列山地掉层结构模型的数值模拟，讨论了扭转控制指标在山地掉层结构中的适用性。建议以“单一楼层刚度中心”定义的刚心对应的偏心率表征掉层结构的扭转效应，耦联周期比已不能作为反映结构扭转效应程度的指标，位移比限值在掉层结构的适用性有待进一步探讨。
Abstract:
The torsional effect is unavoidable for the structure supported by foundations with different elevations under the seismic action, and the selection of reasonable control parameters is crucial in the study of torsion effect. In this paper, the basic control parameters in the study of the torsional effect of the structure supported by foundations with different elevations were summarized. Different definitions of the stiffness center were introduced. The relationship between the eccentricity ratio corresponding to the stiffness center with different definitions and the torsional effect of the structure was comparatively analyzed. Also, through the numerical simulation of a series of structure models supported by foundations with different elevations, the applicability of torsional control index in the structure supported by foundations with different elevations was discussed. The eccentricity ratio corresponding to the stiffness center defined by Single floor CR is proposed to characterize the torsional response of the split-foundation structure. While the coupled period ratio should not be used as an index to reflect the torsional effect of the structure supported by foundations with different elevations, and the applicability of the limit of displacement ratio for the structure supported by foundations with different elevations needs to be further discussed.

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备注/Memo

备注/Memo:
收稿日期:2022-06-22;改回日期:2022-09-02。
基金项目:国家自然科学基金项目(51638002,51878101)
作者简介:唐洋洋(1990-),女,博士,主要从事结构抗震与减灾防灾研究.E-mail:tyyang90@126.com
通讯作者:李英民(1968-),男,教授,博士,主要从事地震工程与工程抗震研究.E-mail:liyingmin@cqu.deu.cn
更新日期/Last Update: 1900-01-01