[1]何福,王勇,陈波,等.典型高层住宅强震和脉动响应对比[J].地震工程与工程振动,2021,41(03):157-164.[doi:10.13197/j.eeev.2021.03.157.hef.016]
 HE Fu,WANG Yong,CHEN Bo,et al.Comparison of ambient vibration and earthquake response for a typical high-rise building[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2021,41(03):157-164.[doi:10.13197/j.eeev.2021.03.157.hef.016]
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典型高层住宅强震和脉动响应对比
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《地震工程与工程振动》[ISSN:/CN:]

卷:
41
期数:
2021年03
页码:
157-164
栏目:
论文
出版日期:
2021-06-30

文章信息/Info

Title:
Comparison of ambient vibration and earthquake response for a typical high-rise building
作者:
何福1 王勇2 陈波1 郭迅1
1. 防灾科技学院 中国地震局建筑物破坏机理与防御重点实验室, 河北 三河 062501;
2. 大庆油田建设集团有限责任公司, 黑龙江 大庆 163000
Author(s):
HE Fu1 WANG Yong2 CHEN Bo1 GUO Xun1
1. Institute of Disaster Prevention, Key Laboratory of Building Collapse Mechanism and Disaster Prevention, China EarthquakeAdministration, Sanhe 065201, China;
2. Daqing Oilfield Construction Group Co., Ltd., Daqing 163000, China
关键词:
高层结构自振频率脉动响应强震响应
Keywords:
high-rise buildingnatural frequencyambient vibrationearthquake response
分类号:
TU4
DOI:
10.13197/j.eeev.2021.03.157.hef.016
摘要:
高层建筑结构的动力特性是指它的自振频率、振型及阻尼比。高层建筑结构的动力特性测试,目前主要采用脉动测试的方法。长宁地震后,密集的余震为原型结构的强震响应测试提供了基础。文中在邻近震中选取某高层剪力墙结构,首先进行系统的脉动测试,识别了主要的模态参数;然后通过流动观测强震仪获得了多组超过设防水准的地面运动及对应的结构响应,据此提炼的模态参数与脉动识别的结果差异不大,但是信号频谱的形态差异很大。脉动时,结构低阶模态频率占主导,而强震响应时高阶模态或地面输入的卓越频率占主导。所得结果可供抗震设计时参考。
Abstract:
Dynamic characteristic of the high-rise building includes natural frequencies, modal shapes and damping ratios. Ambient measurement is one of the most popular methods to determine above parameters. The test method for the high-rise building dynamic characteristic is ambient vibration test. After June 17, 2019 Changning earthquake, the frequent aftershocks provide a good opportunity to measure the response of high rise buildings. One of the typical 31 stories RC shear wall structure is selected for monitoring. First, modal parameters were identified by ambient vibration measurement; second, ground motion and structural response induced by several strong aftershocks were captured by mobile accelerographs. Modal frequencies differs a little, but the shape of frequency spectrum are quite different. Fundamental frequencies are predominant in ambient spectrum, but much lower in the earthquake response spectrum. Frequency values of prototype high rise buildings provide valuable references for practical engineers.

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备注/Memo

备注/Memo:
收稿日期:2020-06-01;改回日期:2020-09-24。
基金项目:中央高校基本科研业务费专项(20215132);国家重点研发计划项目(2017YFC1500606,2016YFE0205100,2018YFC1504302);国家自然科学基金项目(51978167)
作者简介:何福(1979-),男,高级工程师,硕士,主要从事结构抗震试验研究.E-mail:hefu79@126.com
更新日期/Last Update: 1900-01-01