铁路桥梁大直径PHC管桩抗压静载试验研究  

Research on Vertical Dispute-stress Test of Major Diameter PCH Tubular Pile of Railroad Bridge

作　　者：吕世鲲 LYU Shi-kun(No.3 Engineering Co.,Ltd,China Railway 17th Bureau Group Co.,Ltd,Hebei Shijiazhuang 050081 China)

机构地区：[1]中铁十七局集团第三工程有限公司,河北石家庄050081

出　　处：《科技创新与生产力》2018年第3期90-94,共5页Sci-tech Innovation and Productivity

基　　金：中铁十七局集团科研课题(2015-18)

摘　　要：通过研究连淮扬镇铁路跨宁启铁路特大桥大直径PHC管桩的单桩抗压静载试验,介绍了跨宁启铁路特大桥大直径PHC管桩工程的设计参数和地质情况,阐述了铁路桥梁大直径PHC管桩抗压静载试验相关准备工作和试验内容,结合静载试验结果,根据土力学相关理论以及试验数据分析与判定方法,对管桩入土后的承载力特性进行分析,验证了大直径PHC管桩作为桥梁基础的承载力可以满足高速铁路桥梁基础工程的要求,指出大直径PHC管桩在高铁桥梁深厚软土地基中作为桥梁基础具备适用性和可靠性,以期为软土地区大直径PHC管桩承载力研究提供借鉴。In this paper,through studying single pile vertical dispute-stress test of major diameter PHC tubular pile of Lianyungang east station-Huaian east station-Yangzhou high-speed rail station-Zhenjiang station railway and grand railway bridge of Nanjing station-Qidong station,the author introduced relevant design parameters and geological conditions,and expounded related preparatory work and test contents.Then,based on results of static loading test and relevant theories,test data and judgment methods of soil mechanics,the author analyzed features of bearing capacity when tubular pile is buried,and verified that major diameter PHC tubular pile,as bearing capacity of bridge foundation,can meet requirements of foundation engineering of high-speed railway bridge.In the end,the author put forward that major diameter PHC tubular pile possess applicability and reliability in application of foundation of deep soft soil,which may provide references for future research of major diameter PHC tubular pile in similar soft area.

关 键 词：铁路桥梁 PHC管桩 大直径管桩 抗压静载试验 土质学 

分 类 号：U443.159[建筑科学—桥梁与隧道工程] U441.2[交通运输工程—道路与铁道工程]