摘要
本文针对某实际住宅砖混结构燃气爆炸事故,采用简化燃气爆炸模型,用ABAQUS有限元软件进行三维非线性动态数值分析,模拟了该住宅在燃气爆炸下的破坏情况,并与住宅实际破坏情况进行对比。分析表明该住宅砖混结构在燃气爆炸下破坏严重,与结构的实际破坏情况相符。在此基础上改变砖混结构的构造措施,分析了不同构造措施对砖混结构抗燃气爆炸的影响。研究表明,采用整体的现浇钢筋混凝土楼板、圈梁和构造柱是提高砌体建筑局部抗燃气爆炸性能以及避免局部破坏引发整体倒塌的有效手段,本文提出的数值方法对模拟砖混结构在燃气爆炸下的反应是一种有效的手段。
The three dimension numerical inelastic model is established for simulation residential masonry building response under gas explosion using ABAQUS. A simplified gas explosion model is used in the numerical analysis. It indicates that the numerical model is effective for simulation masonry building response under gas explosion through comparing analysis between numerical simulation results and the actual explosion situation. Then three numerical models with different construction details are established, the analysis results show that masonry building without tie column and ring beam has lower resistance of gas explosion, local damage easily lead to overall collapse. The masonry building with tie column, ring beam and situ concrete floor has better resistance of gas explosion, it not only improve local resistance of gas explosion, but also avoid whole collapse due to local damaged. It indicates that the residential masonry building with situ reinforced concrete tie column, ring beam and floor is effective construction details for resisting gas explosion.
出处
《建筑科学》
CSCD
北大核心
2015年第3期110-115,共6页
Building Science
基金
上海建科院上海市工程结构新技术重点实验室开放研究基金(2012-KF03)
关键词
砌体结构
燃气爆炸
数值模拟
构造措施
ABAQUS
masonry building
gas explosion
numerical simulation
construction details
ABAQUS
作者简介
马宏旺（1972-），男，博士，副教授【联系方式】hwma@sjtu．edu．cn
