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
1 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, P.R. China
2 State Key Laboratory of Subtropical Architecture Science, South China University of Technology, Guangzhou, 510640, P.R. China


Article Metrics

CrossRef Citations:
1
Total Statistics:

Full-Text HTML Views: 281
Abstract HTML Views: 224
PDF Downloads: 195
Total Views/Downloads: 700
Unique Statistics:

Full-Text HTML Views: 189
Abstract HTML Views: 157
PDF Downloads: 163
Total Views/Downloads: 509



Creative Commons License
© 2014 Han et al;

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.

* Address correspondence to this author at the School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, P.R.China; Tel: 86-13802945532; Fax: 86-0208114206; E-mail: xlhan@scut.edu.cn


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.

Keywords: Adina, interaction, overall FEA model, raft stress, raft settlement, rigid-pile composite foundation.