RESEARCH ARTICLE
Effects of Site Factors on the Performance of Rigid-Pile Composite Foundation in Tall Buildings
Xiao-Lei Han*, 1, 2, Yao-Kun Li1, Jing Ji1, 2, Fan Luo1
Article Information
Identifiers and Pagination:
Year: 2014Volume: 8
First Page: 71
Last Page: 77
Publisher ID: TOCIEJ-8-71
DOI: 10.2174/1874149501408010071
Article History:
Received Date: 6/1/2014Revision Received Date: 25/3/2014
Acceptance Date: 25/3/2014
Electronic publication date: 30/5/2014
Collection year: 2014
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Values of site factors in numerical simulation can have profound effects on the calculation accuracy. In order to fully understand the performance of rigid-pile composite foundation in tall buildings, this article set up an overall FEA model of a 25-storey frame-tube structure by considering the interaction of superstructure, foundation and ground. Thereafter, a detailed parametric study was performed by changing values of different key site factors. These parameters include: Ground soil range, distance of neighboring buildings and deformation modulus of cushion. The results show that 1) Ground soil range has a great influence on the stress and settlement of raft, the effective influence range is 2-3 times of the raft dimension; 2) Influence of neighboring buildings on the stress and settlement of the raft can be neglected; 3) With the increase of cushion modulus, the raft stress increases while the settlement decreases, an optimal cushion modulus is recommended to be 20-40MPa.