开洞剪力墙在不同受火面下温度场数值模拟分析

Numerical simulation and analysis of temperaturefield of shear wall with openings under different fire surfaces

采用有限元软件ABAQUS对开洞剪力墙进行数值模拟,应用ABAQUS软件建立了开洞剪力墙模型。采用ISO-834国际标准火灾升温曲线加载温度,给定了初始条件和边界条件,分别考虑了剪力墙单面受火和双面受火两种情况,经有限元软件分析后,得到了随时间变化该剪力墙的温度场变化规律。受火面剪力墙温度上升呈现先快后慢的趋势,与温度曲线较一致;背火面剪力墙温度上升较缓,总体温度比较低。剪力墙在受热100 min后,对于单侧和双侧受火两种情况进行对比,剪力墙双层受火会使其中心区域温度更高。

In this paper,the finite element software ABAQUS is used to simulate the opening shear wall,and the opening shear wall model is established by using ABAQUS software.The loading temperature of ISO-834 international standard fire temperature rise curve is adopted,the initial conditions and border inspection conditions are given,and the two cases of single-sided fire and double-sided fire of shear wall are considered respectively.After the analysis of finite element software,the variation law of temperature field of shear wall with time is obtained.The temperature rise of shear wall on fire surface shows a trend of first fast and then slow,which is consistent with the temperature curve,the temperature of the shear wall on the back fire surface rises and exchanges,and the overall temperature is relatively low.After the shear wall is heated for 100 min,the two cases of unilateral and bilateral fire are compared.The double-layer fire of the shear wall will make the temperature in the central area higher.