大直径深长嵌岩桩承载特性的试验研究  

Testing Study on Bearing Behavior of Large-diameter and Deep-length Rock-socketed Pile

作　　者：王红伟[1] 戴国亮[1] 龚维明[1] 

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京210096

出　　处：《水利与建筑工程学报》2009年第4期7-10,共4页Journal of Water Resources and Architectural Engineering

基　　金：国家科技支撑计划(2008BAG07B01)

摘　　要：结合西堠门大桥2.8 m直径嵌岩桩静载荷试验和应力测试结果,分析了大直径深长嵌岩桩侧摩阻力和桩端阻力的发挥特性,结果表明,在桩侧桩端岩石强度较高的条件下,侧摩阻力和端阻力在桩岩相对位移和桩端位移很小变位下就能够发挥出较高的水平。Based on the results of static load tests and stress tests for the 2.8 m diameter rock-socketed pile of Xihoumen Bridge,the exertion behavior of the side resistance and base resistance of the large-diameter and deep-length rock-socketed pile is analyzed.The results show that the side resistance and base resistance can exert a higher level under a small deformation of relative pile-rock displacement and tip displacement when the rock strength in pile side and base is high.

关 键 词：桥桩 深长嵌岩桩 桩侧摩阻力 桩端阻力 

分 类 号：U445.55[建筑科学—桥梁与隧道工程]