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Geological Engineering: Proceedings of the 1st International Conference (ICGE 2007)

Baosong Ma
Baosong Ma
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Deformation of foundation pit wall has significant influence on the safety of foundation engineering. Many parameters affect the deformation. To find out how much these parameter affect the deformation respectively has special significance for design of the supporting wall of foundation pit. With the foundation pitch project of Yun Yuan Village in Guilin as a case, influence of parameters of soil and supporting structure on the deformation of pit wall is analyzed. A quantitative analysis is carried out with ADINA, a non-linear finite element calculating tool. Result about the relationship between the parameters and the pit wall deformation are obtained from the study.

With the rapid development of China's city construction and high rise buildings, deep foundation pitch for high rise building is more and more commonly in use. Accidents of foundation pitch are also frequently happened due to unreasonable supporting structure systems. Foundation pitch accidents are mainly due to two reasons: one is the self-instability of pitch supporting structure and the other is the changes of surrounding environment due to pitch excavation (Qin, 1998). The key problem in the self-instability of pitch supporting structure system is the deformation of pit wall. Therefore, quantitative analysis of relevant factors contribut to the deformation is necessary. For the difficulty of systematical study of the parameters in-sita foundation pitch, numerical simulation for the determination of the quantitative relationship between the parameters and the deformation has great significance (Wang, et al. 2003).

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