高温时高强混凝土轴心受压柱力学性能研究

Study on Mechanical Property of High-Strength Concrete Axial Compression Column at High Temperature

应用大型有限元分析软件ANSYS对高温作用下的高强混凝土轴心受压柱(C60)进行了仿真模拟,研究了轴压柱在不均匀温度场下的温度分布,并采用先升温后加载的顺序单向耦合法,对轴压柱的高温力学性能进行了理论分析,给出了柱荷载-挠度全过程曲线,通过与试验结果的对比表明,采用本文方法进行高强混凝土柱抗火性能的分析是可行的.

The simulated experiment is done with high - strength concrete （HSC） axial compression column at high temperature. Using FEA program ANSYS, the temperature distribution of the section at non - uniform tem - perature field is analyzed. At the same time, through the way to elevate the temperature first and load at last, a theoretical study is made on the mechanical properties at high temperature and the load - deformation curve of HSC axial compression column is compiled. The calculation and the test results show that the proposed method is proven workable to the analysis on fire - resistance behavior of HSC construction.