IN-SITU PROTOTYPE TEST STUDY OF COMPOSITE FOUNDATION OF RIGID PILE WITH CAP
LEI Jinbo1，2，CHEN Congxin2
(1. School of Civil and Architecture，Nanchang Hangkong University，Nanchang，Jiangxi 330063，China；2. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China)
Abstract：In order to realize the working properties of the composite foundation of rigid pile with cap，the character laws were researched intensively by in-situ prototype test at the highway around Suzhou，such as Q-S，the settlement difference between load plank and pile，distribution of surface earth pressure，section settlement for composite foundation of rigid pile with cap. The results indicate that the composite foundation of long pile with cap is easier than the composite foundation of short pile with cap in controlling the settlement and enhancing the soil carrying capacity；the composite foundation of short pile with cap is easier than the composite foundation of long pile with cap in exerting the soil carrying capacity under the design load；the soil under pile caps is different from the soil beside pile caps in the load capability and its exerting extent；the vertical deformation is approximately same between the pile with cap and soil under pile cap；and the whole effect of the cushion can be ensured，because the pile cap can afford the rigid plank action and diffuse the stress on the top of pile. The test and analysis results are helpful to establish the calculation model of composite foundation of rigid pile with cap，consummate the theory of working properties of composite foundation of rigid pile with cap，and optimize the engineering design.
雷金波,陈从新. 带帽刚性桩复合地基现场足尺试验研究[J]. 岩石力学与工程学报, 2010, 29(08): 1713-1720.
LEI Jinbo1，2，CHEN Congxin2. IN-SITU PROTOTYPE TEST STUDY OF COMPOSITE FOUNDATION OF RIGID PILE WITH CAP. , 2010, 29(08): 1713-1720.
