挤扩支盘桩承载性能理论与试验研究  

Theoretical and Experimental Study on the Bearing Performance of Squeezed Expansion Branch Pile

作　　者：王建华 刘泓悦 于泽泉 WANG Jianhua;LIU Hongyue;YU Zequan(Guangdong Jianke Transportation Engineering Quality Testing Center Co.,Ltd.Guangzhou 510500,China;Guangdong Transportation Infrastructure Intelligent Detection Engineering Technology Research Center Guangzhou 510500,China)

机构地区：[1]广东建科交通工程质量检测中心有限公司,广州510500 [2]广东省交通基础设施智能检测工程技术研究中心,广州510500

出　　处：《广东土木与建筑》2025年第3期32-36,共5页Guangdong Architecture Civil Engineering

摘　　要：通过对某高速公路项目桥梁挤扩支盘桩承载力发挥机理进行试验研究,得出受荷过程中,桩身各支盘端承力由上至下逐步发挥且增加趋势稳定,各支盘端承力占总荷载的比例随荷载增加逐渐趋于稳定。在最大试验荷载作用下,支盘承载力分担总荷载的51.4%。综上,桩基础承载力发挥过程为摩擦力和端承力的综合特征反应。Through experimental research on the bearing capacity mechanism of squeezed branch piles in a certain highway project bridge,it was found that during the loading process,the end bearing capacity of each branch pile gradually exerted from top to bottom and showed a stable increasing trend.The proportion of each branch pile end bearing capacity to the total load gradually stabilized with the increase of load.Under the maximum test load,the bearing capacity of the support plate accounts for 51.4%of the total load.In summary,the process of exerting the bearing capacity of pile foundations is a comprehensive characteristic reaction of frictional force and end bearing force.

关 键 词：挤扩支盘桩 承载力测试 内力测试 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]