单层球面网壳的多重地震效应研究

支旭东; 张英楠; 范峰; 沈世钊

doi:10.6052/j.issn.1000-4750.2017.05.0370

单层球面网壳的多重地震效应研究

doi: 10.6052/j.issn.1000-4750.2017.05.0370

支旭东^1,2,
张英楠^1,2,,
范峰^1,2,
沈世钊^1,2

1.
哈尔滨工业大学结构工程灾变与控制教育部重点实验室, 哈尔滨 150090;
2.
哈尔滨工业大学土木工程智能防灾减灾工信部重点实验室, 哈尔滨 150090

基金项目: 国家杰出青年科学基金项目（51525802）；国家科技支撑计划课题项目（2015BAK17B03）

详细信息

作者简介:
支旭东(1977-),男,哈尔滨人,教授,博士,博导,从事大跨空间结构抗震理论研究(E-mail:zhixudong@hit.edu.cn);范峰(1971-),男,哈尔滨人,教授,博士,博导,从事大跨空间结构抗震理论研究(E-mail:fanf@hit.edu.cn);沈世钊(1933-),男,哈尔滨人,教授,博士,博导,从事大跨空间结构抗震理论研究(E-mail:szshen@hit.edu.cn).

通讯作者:
张英楠(1992-),男,齐齐哈尔人,博士生,从事大跨空间结构抗震理论研究(E-mail:yingnanbryant@126.com).

中图分类号: TU393.3
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- 被引次数: 0
出版历程
- 收稿日期: 2017-05-18
- 修回日期: 2017-09-25
- 刊出日期: 2018-09-29

RESPONSES OF SINGLE-LAYER RETICULATED DOMES SUBJECT TO MULTIPLE EARTHQUAKES

1.
Key Laboratory of Structural Engineering Disaster Control of Education Ministry, Harbin Institute of Technology, Harbin 150090, China;
2.
Key Laboratory of Civil Engineering Intelligent Disaster Prevention and Mitigation Control of Ministry of Industry and Information, Harbin Institute of Technology, Harbin 150090, China

摘要

摘要: 为研究网壳结构包含主余震序列的多重地震效应，该文首先筛查中国地震台网中心和太平洋地震工程研究中心数据库中的主震、余震序列数据，获得14次地震中共计342对包含主余震序列的多重地震动时程数据；应用这些多重地震数据对单层球面网壳进行了全荷载域动力时程分析，根据得到的各特征响应随加速度幅值变化曲线，讨论网壳结构的多重地震效应。首先通过对不同加速度幅值下结构响应算例的描述，定义了余震引起的五种不同影响程度。在此基础上进行了大量的参数分析，统计归纳了主震结束时单层球面网壳最大节点位移、塑性发展程度和损伤程度等对结构抵抗余震能力的规律，并将主震结束时的1P杆件比例和损伤因子定义为衡量结构抵抗余震能力的指标，所得出的结论可为实际工程的抗震设计提供参考。
- 单层球面网壳 /
- 多重地震 /
- 抗震性能 /
- 塑性发展程度 /
- 余震
Abstract: To study the responses of single-layer reticulated domes subject to multiple earthquakes (including main shock-aftershock sequences), a primary set of main shock-aftershock sequences was constructed from PEER (Pacific Earthquake Engineering Research Center) and CENC (China Earthquake Networks Center). 342 groups of acceleration time histories in 14 different main shock-aftershock sequences were identified for the dynamic analysis of seismic performance in a full process domain. Based on the curves of several characteristic factors which corresponding to acceleration amplitudes, the aftershock effect was elaborated. First, five different levels of aftershock effect were defined through the description of analysis examples with different acceleration amplitudes. Subsequently, as a result of a significant amount of parametric analysis, the pattern of the ability in aftershock effect resistance was summarized, influenced by the maximum nodal displacement, plastic development and damage degree at the end of main shocks. Finally, the ratio of 1P and the damage factor at the end of main shocks were determined as the indexes about the evaluation of the ability in aftershock effect resistance, to provide reference for practical engineering seismic design in civil infrastructures.
- single-layer reticulated domes /
- multiple earthquakes /
- seismic performance /
- plastic development /
- aftershock

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参考文献(17)

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