装配式AAC板构式结构地震易损性及安全性
Seismic vulnerability and safety of prefabricated AAC panel structures
熊立红 1刘学洋1
作者信息
- 1. 中国地震局工程力学研究所,黑龙江哈尔滨 150080;中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨 150080
- 折叠
摘要
在历次大地震中,我国村镇建筑震害最为严重.为提高村镇建筑抗震性能,针对一种具有节能环保、轻质高强及施工高效等优点的装配式蒸压加气混凝土板构式结构(AAC板构式)新体系做了地震易损性和安全性研究,考虑场地条件、房屋层数、板材配筋率及强度,设计了6个AAC板构式结构.以最大延性系数为指标,采用基于"位移"的方法对该结构极限状态地震易损性及影响因素进行了分析,并评估其地震安全性;将统计方法与基于"地震动强度"的方法相结合研究了结构的地震倒塌易损性.结果表明:场地类型、层数、配筋率对该结构极限状态易损性影响较为明显,而板材强度的影响较小.Ⅰ类场地对结构的影响最大,8度多遇地震下结构基本完好,罕遇地震下主要为中等破坏和严重破坏、且倒塌平均概率仅为4.34％,说明该结构具有良好的抗震性能.
Abstract
The rural building were seriously damaged in previous major earthquakes.In order to improve its seismic performance,the seismic vulnerability and satety of a new prefabricated autoclaved aerated concrete(AAC)panel structure are studied,which has the advantages of energy saving and environmental protection,light-weight and high-strength,high-efficiency of construction.In this paper,6 AAC panel structures are designed comprehensively considering various factors including site conditions,number of floors,reinforcement ratios and strength.The structural limit state seismic vulnerability and safety are studied using displacement-based format,based on maximum ductility factor as an indicator.This study combines statistical methods with IM-based format to study the seismic vulnerability of structural collapse.The results show that the impacts of site conditions,number of floors and reinforcement ratios are obvious,while strength of AAC panel has a small impact.Site Ⅰ has the greatest impact on the structure,and the structure is basically intact under 8 degree frequent earthquake,mainly moderate and severe damage under rare earthquakes,and the average probability of collapse is only 4.34％,indicating that the structure has excellent seismic performance.
关键词
装配式建筑/AAC板构式结构/易损性分析/结构抗震Key words
prefabricated building/AAC panel structure/vulnerability analysis/structural seismic引用本文复制引用
基金项目
中国地震局工程力学研究所基本科研业务费专项(2019B07)
中国地震局地震工程与工程振动重点实验室重点专项(2021EEEVL0302)
出版年
2024
NETL
NSTL
万方数据