刚性钉形桩承载特性物理模型试验及有限元研究  

Physical Model Test and Finite Element Study on Bearing Properties of Rigid Nail-Shaped Pile

作　　者：刘明泉 高岭[3] 李晓芝 LIU Ming-quan;GAO Ling;LI Xiao-zhi(School of Civil Engineering, Tangshan University, Tangshan 063000, China;Hebei Key Laboratory for Building Engineering and Tailings Utilization, Tangshan 063000, China;Hebei Transportation Planning and Design Institute, Shijiazhuang 050000, China)

机构地区：[1]唐山学院土木工程学院,河北唐山063000 [2]河北省建筑工程与尾矿综合利用重点实验室,河北唐山063000 [3]河北省交通规划设计院,石家庄050000

出　　处：《唐山学院学报》2020年第6期50-54,86,共6页Journal of Tangshan University

基　　金：河北省建设科技研究计划项目(20190502)。

摘　　要：采用物理模型试验和ABAQUS有限元模拟相结合的方法,对刚性钉形桩承载力组成及扩大头尺寸对承载力影响规律进行了研究。研究结果表明:扩大头能提高刚性钉形桩承载力;端阻力对桩承载力影响较大,扩大头直径增加桩承载力提高明显;桩承载力理论计算结果与试验和模拟结果之间存在一定差异,当采用理论公式计算时,应对理论计算结果进行适当折减。With physical model test and finite element simulation by ABAQUS,the composition of the bearing capacity and the influence of the enlarged head size on the capacity are studied about the rigid nail-shaped pile.The results show that:The bearing capacity of the rigid nail-shaped pile can be improved by enlarging the head size;The bottom resistance has a great influence on the bearing capacity,and the capacity can be raised significantly with the diameter of the enlarged head increasing;there are some differences between the theoretical calculation and the tested and simulated results,and thus the results should be appropriately reduced when theoretical calculation method is applied.

关 键 词：刚性钉形桩 承载特性 物理模型试验 有限元模拟 

分 类 号：TU473.1[建筑科学—结构工程]