【摘要】 确定了钢材和混凝土热工参数和热-力本构关系,采用ABAQUS软件建立了火灾下高强混凝土墙温度分布和受力性能分析的有限元模型,计算结果得到以往实验结果的验证。在此基础上,对高强混凝土墙高温下的应力分布、混凝土裂缝以及重要影响因素进行了分析,初步了解了火灾下高强混凝土墙的力学性能,为进一步确定科学合理的抗火设计方法创造了条件。更多还原

【Abstract】 The thermal properties and thermo-mechanical constitution law of steel and concrete were determined.A finite element model for temperature distribution and mechanical analysis of high strength concrete(HSC) walls under fire was established using the software ABAQUS.The calculated results agreed with previous experimental results.Based on the finite element model,the stress distribution,concrete cracks and key influencial parameters of HSC walls at high temperatures were analyzed.The fire performance of HSC walls was obtained,which provided conditions for further study on rational fire design method.更多还原