THE EFFECTS OF SITE FACTORS ON THE BEHAVIOR OF RIGID-PILE COMPOSITE GROUND AND RAFT FOUNDATION SYSTEM

THE EFFECTS OF SITE FACTORS ON THE BEHAVIOR OF RIGID-PILE COMPOSITE GROUND AND RAFT FOUNDATION SYSTEM

Li, Yao-Kun; Han, Xiao-Lei; Luo, Fan

Full Article:

This paper adopts the finite element method (FEM) to calculate an example of a 25-storey frame-tube structure by considering the interaction of superstructure, foundation and ground. The analysis of the effects of site factors on the stress and displacement of the raft foundation is carried out. The main site factors include: constraint effect of the surrounding ground soil, influence of neighboring buildings, and effect of the construction defect of cushion. The study shows that 1) the geometry size of ground soil has relatively great influence on the stress and displacement of the raft foundation, the influence sphere is about 2~3 times the geometry size of the raft; 2) neighboring buildings have a more significant effect on the stress and displacement of adjacent edge of the raft, this effect gradually disappears with the increase of building spacing; 3) the construction defects of cushion have limited effect on the stress and displacement of the raft.

This paper adopts the finite element method (FEM) to calculate an example of a 25-storey frame-tube structure by considering the interaction of superstructure, foundation and ground. The analysis of the effects of site factors on the stress and displacement of the raft foundation is carried out. The main site factors include: constraint effect of the surrounding ground soil, influence of neighboring buildings, and effect of the construction defect of cushion. The study shows that 1) the geometry size of ground soil has relatively great influence on the stress and displacement of the raft foundation, the influence sphere is about 2~3 times the geometry size of the raft; 2) neighboring buildings have a more significant effect on the stress and displacement of adjacent edge of the raft, this effect gradually disappears with the increase of building spacing; 3) the construction defects of cushion have limited effect on the stress and displacement of the raft.

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DOI: 10.5151/meceng-wccm2012-18581

Referências bibliográficas

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• [7] Wang. J.Q., “Numerical Analysis of Combined Action of Frame Structure and Rigid Pile Composite Ground-Raft Foundation System”. Chongqing University, D, Chongqing, China,2007.
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Como citar:

Li, Yao-Kun; Han, Xiao-Lei; Luo, Fan; "THE EFFECTS OF SITE FACTORS ON THE BEHAVIOR OF RIGID-PILE COMPOSITE GROUND AND RAFT FOUNDATION SYSTEM", p-1890-1900. In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 23580828, DOI 10.5151/meceng-wccm2012-18581