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利用ANSYS有限元软件,针对群桩水平力学响应问题,进行了三维有限元数值模拟,验证了模型的正确性。在此基础上,对水平受荷群桩基础进行不同工况的计算分析,探讨了桩距、桩长和桩径各种因素对群桩工作性状的影响。分析表明,桩距与桩径对水平受荷群桩工作性状影响较大,桩长对其影响较小,8倍桩径为群桩效应的临界桩距,加大桩径能明显控制桩头侧移,提高桩的承载能力。
Using ANSYS finite element software, a three-dimensional finite element numerical simulation is carried out to verify the model’s correctness. On this basis, the calculation and analysis of horizontal loading group pile foundation under different working conditions are carried out, and the effects of various factors such as pile spacing, pile length and pile diameter on the working characteristics of pile groups are discussed. The analysis shows that the pile spacing and pile diameter have a great influence on the working behavior of horizontally loaded pile groups, and the pile length has little effect on it. The pile diameter of 8 times is the critical pile spacing of group pile effect. Increasing the pile diameter can obviously control the pile head Side shift, improve the carrying capacity of the pile.