摘要
以居住建筑保温工程中一个典型开间的外墙为研究对象,采用有限元数值模拟方法,分析了EPS板薄抹灰外墙外保温复合墙体在夏季极端高温、骤降暴雨环境下的热结构耦合反应,结果表明:外界不利环境是引起裂缝或脱落的主要因素之一;聚苯板具有良好的隔热效果;窗洞四角变形较大,是容易出现问题的地方,应当引起重视;由于砂浆与EPS板的交界处变形不协调,裂缝会首先出现在砂浆层或者与EPS板的交界处.
This paper simulates thermal-structural response of the outer wall of a typical residential building in the summer high-temperature and rain environments using finite element analysis methods.The results show that external bad environment is one of the main factors;that polystyrene board has a good thermal insulation effect;that the displacement of the four corners of the windows is larger which must pay attention;that the deformation between mortar and EPS board isnot coordinated,so the cracks is appeared firstly in mortar.
出处
《郑州大学学报(工学版)》
CAS
北大核心
2010年第4期15-18,72,共5页
Journal of Zhengzhou University(Engineering Science)
基金
河南省重大公益科研计划项目(081100910400)
郑州市重大技术研究与开发项目(082SGZS32079)
郑州大学研究生科学研究基金(重点类A181)
关键词
EPS外保温复合墙体
极端高温
热结构耦合
数值分析
Composite wall with external thermal insulation with EPS board
extreme high temperature
heat structural coupling
numerical analysis