低承台群桩基础工作性能数值模拟研究

Numeric simulation research on bearing capacity behavior of low cap pile group foundation

采用ANSYS有限元软件建立了4桩和9桩两种群桩基础的力学计算模型;对4桩基础模型试验结果进行了拟合分析,验证了计算模型的适用性;对不同桩距的4桩和9桩足尺寸低承台群桩基础进行了数值模拟试验分析,研究了不同桩数、不同桩距、不同承台尺寸对群桩基础工作性状的影响;获得一系列具有参考价值的结论。

Tow mechanics models of pile group of 4 or 9 piles were established with ANSYS software. The suitability of the models was examined by simulated load test of pile group of 4 piles model. It was simulating research that the influence of bearing capacity behavior of full scale pile group foundation affected by the number and space of pile, and the cap size changes. A series of useful conclusions were obtained.