| Aimed at rigid pile composite foundation, a semi-analytical and semi-numerical method which the influence among pilesoil, foundation has been concerned is presented in this dissertation based on the Boussinesq and Mindlin solution of groundsoil. In order to research the actual engineering behavior of rigid pile composite foundation in Guangdong Province, in-situ tests were used to study the behavior of rigid pile composite foundation, these engineering projects include:Dongguang Shiji Plaza, Dongguang Shiji City International Apartment Complex, Fenhuang north-road residential area of Guangzhou Huadu district, Longzhu Residential area of Guangzhou Huadu district. In-situ test results illustrate that plain concrete load-bearing mechanism of rigid pile composite foundation with C20 plain concrete and 20cm sand cushion has good effect for the capacity of inter-pile soil. At last, in order to detect the preciseness of calculation results and correctness of the method presented in this paper, optimizing design of Dongguang Business Center is calculated by the method present in the paper. Monitoring of counterforce of foundation, settlement of botom plate, counterforce of piles and the stress of steel has lasted for 1.5 years. The measured results are in good agreement with the calculated results of reaction force of ground, foundation settlement and force at the top of pile. So the method presented in this dissertation is easy apply to solve practical problems.
|
PDF Full Text Request