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《Fujian Construction Science & Technology》 2015-01
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The influence analysis of Foundation Pit Slope Instability to the Adjacent Pile Foundation

Aimed at a pit excavation construction in soft soil area that adjacent to a building pile foundation,the two-dimensional infinite element numerical model was established. According to the simplified bishop method and finite element strength reduction method,slope stability of unsupported excavation method was analyzed and the foundation pit slope minimum safety factors under different working conditions were given. By numerical simulation of influence of pit excavation surrounding building pile to foundation through finite element software,the pile migration and pile force caused by pit slope deformation under different loads were analyzed. The results of the study show that,slope instability caused by unsupported excavation in the soft soil area is main factor leading to peripheral building pile foundation migration,and the increasing of surround stack at slope also plays a great role in slope instability.
【CateGory Index】: TU43
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