水平受荷群桩工作性状参数分析  

Parameter analysis on the behavior of lateral-load pile groups

作　　者：胡婷婷[1] 刘忠[2] 伍腾峰[2] 胡哲[2] 

机构地区：[1]湖南科技学院土木工程与建设管理系,永州425100 [2]湘潭大学土木工程与力学学院,湘潭411105

出　　处：《建筑结构》2010年第12期117-121,共5页Building Structure

摘　　要：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 finite element program ANSYS,the three-dimensional finite element numerical simulation on the lateral nonlinear response of pile groups was carried out,and the correctness of the model was verified.The calculation and analysis of the lateral-load pile groups under different conditions were discussed,and the various factors,such as pile space,pile length,pile diameter,acting on the behavior of the lateral-load pile groups were also discussed.The analysis results show that the pile space and the pile diameter have a greater impact on the behavior of the lateral-load pile groups,and the pile length has a lower impact.Eight-time pile diameter is the critical pile space of the pile group effect.Increasing pile diameter can control the lateral displacement of the pile obviously and improve the bearing capacity.

关 键 词：桩距 桩长 桩径 荷载分担 桩身位移 桩身弯矩 

分 类 号：TU473.1[建筑科学—结构工程]