刚性桩复合地基模型拟动力试验研究  

Pseudo-dynamic test study on rigid-pile composite foundation

作　　者：鲍鹏[1] 刘德辉[1] 

机构地区：[1]河南大学土木建筑学院,开封475004

出　　处：《建筑结构》2013年第12期89-92,共4页Building Structure

基　　金：河南省科技攻关计划项目(496260015)

摘　　要：为了研究刚性桩复合地基的抗震性能,依据相似理论,建立几何相似比为1∶10的3×3刚性桩复合地基群桩模型,采用拟动力的试验方法,研制一套试验系统。通过在桩身粘贴电阻应变片、垫层中埋设应变片、砂箱外壁连接位移传感器等方法分别测出桩身应变、垫层变形值、砂箱位移,并对上述数值进行分析研究,得出刚性桩复合地基在地震作用下的响应规律,为刚性桩复合地基在抗震设防地区的应用提供理论指导。In order to study the seismic performance of rigid-pile composite foundation,a 3×3 rigid-pile composite foundation pile group model with geometric similarity ratio of 1∶10 was established based on the similarity theory.A test system was developed by using pseudo-dynamic test methods.The pile strain,cushion deformation and sandbox displacement were measured by pasting resistance strain gauges in the pile,burying strain gauges in the cushion and connecting displacement sensors between the outer walls of the sandbox respectively.The above data was analyzed and the response of rigid-pile composite foundation under seismic action was obtained,which can be theoretical guidance for the application of the rigid-pile composite foundation in seismic fortification areas.

关 键 词：刚性桩复合地基 拟动力试验 抗震性能 相似理论 

分 类 号：TU472[建筑科学—结构工程]