|
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.
|
|
Received: 28 January 2010
|
|
|
|
