刚-柔性桩复合地基中刚性桩和自由状态下刚性桩性能比较  

Study on characteristics comparison between rigid pile in composite foundation with rigid-flexible piles and that in free state

作　　者：朱奎[1] 徐日庆[1] 吴冬虎 毛西平 

机构地区：[1]浙江大学软弱土与环境土工教育部重点实验室,杭州310027 [2]温州市民用建筑规划设计所,浙江温州325000 [3]温州东瓯建设集团公司,浙江温州325000

出　　处：《岩土力学》2007年第11期2353-2358,共6页Rock and Soil Mechanics

基　　金：浙江省建设厅科研项目(No.20050568);温州市科技技术局资助社会发展项目(No.S2005A013);温州市瓯海区科技技术局资助社会发展软课题(No.200522)

摘　　要：刚-柔性桩复合地基中刚性桩的荷载传递规律及变形性状明显不同于自由状态下的单桩,由于复合地基中刚性桩、柔性桩、土的互相作用,桩的工作性状要复杂得多。为了比较两者的承载变形特性,在温州地区进行同根桩在不同状态下静荷载对比试验,在静荷载试验过程中同步检测桩身应力情况,结合测试数据对桩沉降特性、荷载传递机理、压缩量特性进行了分析,分析结果对工程设计施工有一定的借鉴价值。The load transfer mechanism and deformation characteristics of cast-in-place piles in composite foundation with rigid-flexible piles are different from that in free state. Working property of pile is complex due to interaction between rigid pile, flexible pile and soil .Static load tests of the same pile under different situation are carded out in Wenzhou. On the basis of monitoring data in the process of static load test, settlement characteristics, load transfer mechanism and compression of pile shaft are analyzed; the conclusions can benefit to engineering design and construction.

关 键 词：刚-柔性桩复合地基 静荷载试验 荷载传递机理 沉降 桩身压缩量 

分 类 号：TU473[建筑科学—结构工程]