预应力混凝土管桩单桩竖向抗拔静载试验分析  

Analysis on Vertical Uplift Static Load Test of Single Prestressed Concrete Pipe Pile

作　　者：刘锋 LIU Feng(Guangzhou Airport Construction&Investment Group Co.Ltd.,Guangzhou 510812,China)

机构地区：[1]广州机场建设投资集团有限公司,广州510812

出　　处：《工程建设与设计》2024年第24期27-29,共3页Construction & Design for Engineering

摘　　要：以广州市白云机场三期扩建工程为研究案例,分析了预应力混凝土管桩单桩抗拔静载试验。为确定管桩的抗拔性能,采用反力法进行了2组单桩竖向抗拔静载试验。试验结果显示,2号地块和12号地块的受检管桩均达到了设计要求的抗拔极限承载力。通过荷载-位移(U-δ)曲线分析,部分管桩表现出明显的非线性特征,而其余管桩则接近线性。Taking the expansion project of Guangzhou Baiyun Airport Phase III as a case study,the static load test of prestressed concrete pipe pile is analyzed.In order to determine the pull-out performance of pipe piles,two sets of vertical pull-out static load tests of single piles were carried out by reaction method.The test results show that the inspected pipe piles of Block 2 and Block 12 have reached the ultimate uplift bearing capacity required by the design.The load displacement(U-δ)curve analysis shows that some pipe piles exhibit obvious nonlinear characteristics,while others are nearly linear.

关 键 词：竖向抗拔静载试验 管桩 承载力 荷载-位移曲线 

分 类 号：TU312[建筑科学—结构工程]