高温后方钢管再生混凝土偏压力学性能

为了深入研究高温后方钢管再生混凝土在偏心受压作用下的力学性能,使用有限元模拟软件ABAQUS分析了不同温度、不同取代率及不同偏心率对方钢管再生混凝土短柱的影响.通过建立模型并与试验结果进行对比,验证了有限元模型的正确性.典型曲线分析结果表明,随着温度的升高,极限承载力呈逐渐降低的趋势;当经历温度相同时,随着取代率的升高,极限承载力缓慢降低,降低幅度不明显;随着偏心率的增大,剩余承载力逐渐减小,下降幅度明显.

Eccentric compression mechanical properties of square steel tube filled with recycled concrete after high temperature

In order to study the mechanical properties of square steel tube filled with recycled concrete after high temperature under the action of eccentric compression, the effect of different temperatures, different replacement rates and different eccentricity on the square steel tube filled with recycled concrete was analyzed with the finite element simulation software ABAQUS. Through establishing the model and comparing with the experimental results, the correctness of finite element model was verified. The results of typical curve analysis show that with increasing the temperature, the ultimate bearing capacity trends to gradually reduce. Under the same temperature and with increasing the replacement rate, the ultimate bearing capacity gradually reduces, but the reducing amplitude is not obvious. With increasing the eccentricity, the surplus bearing capacity gradually reduces, and the reducing amplitude is obvious. 