[1]谢昭波,陆新征,杨哲飚,等.地震导致外围护填充墙坠落的试验研究及伤害风险范围分析[J].自然灾害学报,2018,(01):017-26.[doi:10.13577/j.jnd.2018.0103]
 CHEA Cheavpor,LU Xinzheng,YANG Zhebiao,et al.Experimental research and range of injury risk analysis of earthquake-induced hazard of falling exterior infill walls[J].,2018,(01):017-26.[doi:10.13577/j.jnd.2018.0103]
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地震导致外围护填充墙坠落的试验研究及伤害风险范围分析
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2018年01期
页码:
017-26
栏目:
出版日期:
2018-02-28

文章信息/Info

Title:
Experimental research and range of injury risk analysis of earthquake-induced hazard of falling exterior infill walls
作者:
谢昭波1 陆新征2 杨哲飚1 许镇3 张新1
1. 清华大学 土木工程系, 清华大学北京市钢与混凝土组合结构工程技术研究中心, 北京 100084;
2. 清华大学 土木工程系, 土木工程安全与耐久教育部重点试验室, 北京 100084;
3. 北京科技大学 土木与资源工程学院, 北京 100083
Author(s):
CHEA Cheavpor1 LU Xinzheng2 YANG Zhebiao1 XU Zhen3 ZHANG Xin1
1. Beijing Engineering Research Center of Steel and Concrete Composite Structures, Tsinghua University, Beijing 100084, China;
2. Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing 100084, China;
3. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
关键词:
填充墙地震次生灾害坠物拟静力试验伤害风险范围
Keywords:
infill wallearthquakesecondary disasterfalling debrispseudo-static experimentrange of injury risk
分类号:
X9;P315.92;X43
DOI:
10.13577/j.jnd.2018.0103
摘要:
在地震作用下,外围护填充墙破坏坠落会产生严重的次生灾害。结构层间变形和墙体面外加速度作用是导致填充墙破坏坠落的主要因素。为了研究这两种因素作用下外围护填充墙的破坏和坠落机制,本文设计了一种填充墙拟静力试验。通过将墙体置于不同倾斜角,用重力加速度分量模拟地震时填充墙受到的不同面外加速度。研究不同面外加速度、不同面内层间位移角下墙体的破坏坠落面积比,并给出拟合计算公式。之后,本文针对不同层数的带砌体填充墙框架结构,分别建立其非线性结构分析模型,计算结构每层的加速度、速度和位移时程响应。根据这些结构最大响应,结合试验得到的拟合公式,计算外围护填充墙体不同宽厚比和地震加速度下破坏造成的坠物数量,并计算坠物经平抛运动落地后的分布情况。最后根据坠物数量和坠物分布,估算出地震作用下外围护填充墙破坏坠落导致的伤害风险范围。
Abstract:
Earthquake-induced hazard of falling exterior infill walls is disastrous. Structural inter-story deformation and out-of-plane acceleration are the main factors induce damage and falling of infill walls. In order to study the mechanism of damage and falling of the infill walls under these two factors, a pseudo-static test of infill walls was designed in this paper. By placing the wall at different tilt angles, different out-of-plane accelerations of the infill walls during earthquake were simulated by using the acceleration component of gravity. Percentage of damage and falling area of the infill wall under different out-of-plane accelerations and in-plane drift is studied, and the fitting formula is provided. Then, aiming at RC-frame structure with exterior infill wall in different numbers of stories, the models of nonlinear structural analysis are established respectively to calculate the history response of acceleration, velocity and displacement of each floor. According to the maximum response of these structures and the experimental formula obtained from the test, the number of falling debris in different width-thickness ratio of infill wall and seismic acceleration is calculated, and the distribution of the debris after falling in projectile motion is calculated. Finally, according to the number and distribution of falling debris, the range of injury risk caused by damage and falling of the exterior infill walls under the earthquake is estimated.

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备注/Memo

备注/Memo:
收稿日期:2017-11-16;改回日期:2017-11-16。
基金项目:国家重点研发计划(2017YFC0702902)
作者简介:谢昭波(1991-),男,硕士研究生,主要从事结构抗震和防灾减灾研究.E-mail:cheacheavpor@gmail.com
通讯作者:陆新征(1978-),男,教授,博士,主要从事结构非线性仿真和防灾减灾研究.E-mail:luxz@tsinghua.edu.cn
更新日期/Last Update: 1900-01-01