钢板混凝土模块墙温度场和应力场研究  

Study on the temperature and stress field of steel concrete modular wall

作　　者：叶志燕[1] 刘建卫[1] 葛鸿辉[1] 

机构地区：[1]上海核工程研究设计院,上海200233

出　　处：《核技术》2013年第4期324-329,共6页Nuclear Techniques

摘　　要：在给定温度曲线和材料热工参数的基础上,采用三维实体单元建立钢板混凝土墙体有限元模型,进行瞬态热分析和热应力分析。计算结果表明,不锈钢面板与混凝土间、剪力钉与混凝土间的温度梯度随着时间先变大再变小;墙体截面的热应力增量随着时间逐渐变小。这为钢板混凝土模块墙的高温力学性能及承载力研究提供参考。Background： Steel plate reinforced concrete structure has small thickness, high capacity and high ductility, which is mainly used in nuclear power reactor facilities. Due to test condition, the mechanical properties and ultimate capacity of steel concrete structure under high temperature is little studied. The properties of steel concrete structure under high temperature have significant effect on application in nuclear power. It is necessary to study the properties of steel concrete structure under high temperature. Purpose： This article is to study the temperature and stress field distribution of steel concrete wall under high temperature. Methods： Based on the determination of temperature curve and material thermal properties, a finite element model of steel concrete wall was established using 3-D solid element, transient temperature and thermal stress analysis were carried out. Results： Temperature gradient between stainless steel plate and concrete and between stud and concrete increases with time, then declines, and increment of thermal stress of wall section become smaller gradually with time. The maximum first principle stress of concrete is larger than cracking stress. Conclusions： Thermal stress has significant effect on mechanical properties of steel concrete wall, and shall be considered in designing the steel concrete structure.

关 键 词：钢板混凝土 有限元模型 温度梯度 热应力 

分 类 号：TU312[建筑科学—结构工程]