基于云图-条带法的概率地震需求分析与地震易损性分析

于晓辉; 吕大刚

doi:10.6052/j.issn.1000-4750.2014.11.0998

基于云图-条带法的概率地震需求分析与地震易损性分析

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

基金项目: 国家自然科学基金项目(51378162,51408155);国家科技支撑计划课题项目(2013BAJ08B01);土木工程防灾国家重点实验室开放基金项目(SLDRCE12-MB-04);中国高校基本科研业务费专项资金项目(HIT.NSRIF.2015099);中国博士后科学基金面上项目(2014M551251);黑龙江省博士后资助项目(LBH-Z14114)

详细信息

作者简介:
于晓辉(1982-),男,辽宁丹东人,助理研究员,博士,从事地震易损性和概率地震风险分析研究(E-mail:yxhhit@126.com).

通讯作者:
吕大刚(1970-),男,黑龙江铁力人,教授,博士,博导,副院长,从事抗震可靠性、易损性和鲁棒性研究(E-mail:ludagang@hit.edu.cn).

中图分类号: P315.9
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出版历程
- 收稿日期: 2014-11-26
- 修回日期: 2015-06-25
- 刊出日期: 2016-06-24

PROBABILISTIC SEISMIC DEMAND ANALYSIS AND SEISMIC FRAGILITY ANALYSIS BASED ON A CLOUD-STRIPE METHOD

Key Laboratory of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China

More Information

Corresponding author:
LÜ Da-gang: 10.6052/j.issn.1000-4750.2014.11.0998

摘要

摘要: 提出一种概率地震需求分析的云图-条带法。该方法通过引入经验地震易损性分析中的数据处理方法,解决传统云图法无法处理海量非线性时程分析结果的局限。为说明该文提出方法,选取100条地震动作为输入,针对23个钢筋混凝土框架结构进行了云图法分析。基于所有结构的云图结果,采用云图-条带法建立了群体结构的概率地震需求模型,并计算得到了群体结构的地震易损性。研究表明:云图-条带法可以有效地处理海量非线性时程分析结果,建立较为合理的概率地震需求模型。在输入地震动的强度范围内,群体结构整体发生严重破坏和完全破坏的概率很低,而主要以发生轻微破坏和中等破坏为主。
- 云图-条带法 /
- 云图法 /
- 条带法 /
- 概率地震需求 /
- 地震易损性
Abstract: A cloud-stripe method is presented for probabilistic seismic demand analysis. This method adopts the strategy commonly used in empirical seismic fragility analysis in order to overcome the limitations of the conventional cloud method in dealing with large amounts of nonlinear time-history data. To illustrate the presented method, 100 real ground motion records are selected as inputs. A total of 23 RC frame structures are used as study cases to perform analyses using the cloud method. Based on the cloud results of all the structures, the probabilistic seismic demand model for the group buildings is derived using the cloud-stripe method, and the corresponding fragility results are calculated. Results show that the cloud-stripe method can effectively handle a large amount of nonlinear time-history analysis data and can develop a reasonable probabilistic seismic demand model. Conditioned on the intensity scope of the considered ground motion records, the group buildings have a limited possibility of occurring severe or complete damage, while their damage outcomes are dominated by slight and moderate damage.
- cloud-stripe method /
- cloud method /
- stripe method /
- probabilistic seismic demand /
- seismic fragility

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参考文献(20)

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