|本期目录/Table of Contents|

[1]Ron Xia,Vladimir Dolezel,L Rak.局部桩筏基础的设计与施工[J].地球科学与环境学报,2009,31(02):188-194.
 Ron Xia,Vladimir Dolezel,L Rak.Design and Construction of a Partially Piled Raft Foundation[J].Journal of Earth Sciences and Environment,2009,31(02):188-194.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第31卷
期数:
2009年第02期
页码:
188-194
栏目:
水资源与地质工程
出版日期:
2009-06-15

文章信息/Info

Title:
Design and Construction of a Partially Piled Raft Foundation
文章编号:
1672-6561(2009)02-0188-07
作者:
Ron Xia1 Vladimir Dolezel2 L Rak1
(1.McClymont and Rak Engineers公司,多伦多,L3R4B5,安大略,加拿大; 2.巴尔杜比采大学, Studentska 95,巴尔杜比采 53210,捷克共和国)
Author(s):
Ron Xia1 Vladimir Dolezel2 L Rak1
(1.McClymont and Rak Engineers, Inc., Toronto, L3R4B5, Ontario, Canada; 2.University of Pardubice, Studentska 95, Pardubice 53210 Czech Republic)
关键词:
地基基础设计与施工数值模拟桩筏基础
Keywords:
foundation engineering the design and construction numerical simulation partially piled raft foundation
分类号:
TU471.1+5
DOI:
-
文献标志码:
A
摘要:
以加拿大多伦多市某工程为例,介绍了在复杂地质条件下采用局部桩筏基础(PPRF)的设计及施工问题;探讨了设计PPRF的决定性因素;在保持PPRF设计的完整性前提下,提出了单位沉降量的准则,并用于筏板和桩的设计;计算了PPRF的滑移及转动;最后,采用有效方法对该工程采用的局部桩筏基础进行了计算分析。结果表明,PPRF的设计主要取决于侧向土压力、分布不均的建筑荷载以及地基土的非均匀承载力,工程桩应主要布置在沉降较大的区域,即位于筏板基础承受高压力而土体承载力较低的西北部。探讨局部桩筏基础的设计与施工为该类型工程的基础设计提供了一个新的解决途径。
Abstract:
The paper describes the design and construction of a Partially Piled Raft Foundation(PPRF)adopted under complex geotechnical conditions, in the City of Toronto, Canada. The design of PPRF was governed by lateral soil pressure, unevenly distributed building loads, and non-uniform bearing capacity of foundation soils. Piles were distributed in the area with excessive settlement. Most of the supporting piles were located in the northwest portion of the raft foundation, where high bearing pressure and low soil bearing capacity were encountered. A unit criterion of the proposed settlement has been applied in the design of the raft slab and the piles in order to keep the integrity of the PPRF. Global stability, including sliding and over turning of the PPRF were an integral part of the design. A state of the art computer analysis was utilized.

参考文献/References:

[1] Semaan G S,Rak L J.Supplementary Geotechnical Investigation of a Proposed Residential Development,1947-1999 Bloor Street West,Toronto, Ontario,Canada.Report Prepared for the First Gulf Development Corporation[R].Toronto:McClyont and Rak Engineers,Inc.,1998.
[2] Hemsley J. Design Applications of Raft Foundations[M]. London:Thomas Telford Ltd,2000.
[3] Ulrich E J.Geotechnical Considerations in Mat Foundation Design[C]∥ASCE,Illinois Section.Soil Structure Interaction.Chicago:ASCE,Illinois Section, 1988:1-33.
[4] Bowles J E.Foundation Analysis and Design[M].5th Edition. New York:McGraw-Hill, 1995.
[5] Xia Z J,Dolezel V,Rak L J,et al. The Impacts of Construction Dewatering on Surrounding Structures of a Project Site[C]∥Zhu He-hua,Zhang Feng,Chin Chung-tien,et al.Underground Construction and Ground Movement,Proceedings of the GeoShanghai Conference Held in Shanghai, China Asce Geotechnical Special Publication,2006,155.
[6] Fagotto D.Raft Foundation of Home Condominiums on the Park, 1947-1999 Bloor Street West, Toronto,Ontario,Canada Report Prepared for the Context High Park Inc[R].Toronto:Read Jones Christoffersen Ltd,2003.
[7] Ulrich E J.Design and Performance of Mat Foundations[M].Detroit: American Concrete Institute,1995.
[8] Xia R,Rak L J.Geotechnical Design Brief of Home Condominiums on the Park,1947-1999 Bloor Street West,Toronto,Ontario,Canada.Report Prepared for Context Development Inc[R].Toronto:McClymont and Rak Engineers,Inc.,2004.
[9] Hagerty D J,Peck R B.Heave and Lateral Movements Due to Pile Driving [J].Journal of the Soil Mechanics and Foundations Division,1971,97(11):1513-1532.

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备注/Memo

备注/Memo:
收稿日期:2009-03-20
作者简介: Ron Xia(1947-),男,加拿大安大略省注册工程师,加拿大McClymont and Rak Engineers公司高级工程师,从事地质工程研究。E-mail:rxia@mccrak.com

更新日期/Last Update: 2009-06-20