单桩水平静载试验前承载力极限值预估  

Prediction of Limit Value of Bearing Capacity of Single Pile Before Horizontal Static Load Bearing Test

作　　者：王冲 张迎 张亮 Wang Chong;Zhang Ying;Zhang Liang(Tianjin Geological Engineering Investigation Institute)

机构地区：[1]天津市地质工程勘测设计院有限公司,天津市300191

出　　处：《勘察科学技术》2023年第4期21-25,共5页Site Investigation Science and Technology

摘　　要：该文依托实际工程案例,获得基桩在水平荷载作用下的相关曲线,同时借助FLAC3D建立桩土模型,模拟实际加载过程,分析不同荷载作用下的桩身位移、桩侧地基土反力以及桩身弯矩,揭示了临界荷载与极限荷载作用下的桩土反应规律。得出了水平极限荷载与承载力特征值之间的抗力分项系数,为以后水平静载试验之前预估极限承载力提供了一定的参考。Based on a practical engineering case,the correlation curves of pile under horizontal load are obtained in this paper.At the same time,the pile-soil model is established by FLAC3D to simulate the actual loading process and analyze the displacement of pile,the reaction force of soil on pile side and the bending moment of pile under different loads.The law of pile-soil response under critical load and ultimate load is revealed.The partial coefficient of resistance between the horizontal ultimate load and the characteristic value of bearing capacity is obtained,which can provide reference for predicting the ultimate bearing capacity before the horizontal load bearing test in the future.

关 键 词：水平静载试验 极限荷载 承载力特征值 FLAC3D 

分 类 号：TU473.1[建筑科学—结构工程]