真空-堆载联合预压地基的数值计算及加固机理探讨

doi:10.12052/gdutxb.150110

广东工业大学学报 ›› 2017, Vol. 34 ›› Issue (01): 31-39.doi: 10.12052/gdutxb.150110

真空-堆载联合预压地基的数值计算及加固机理探讨

徐朝阳¹, 刘明¹, 胡舒之², 杨雪强³

1. 中国电力投资集团公司珠海横琴热电有限公司, 广东珠海 519031;
2. 深圳市市政设计研究院有限公司, 广东深圳 518029;
3. 广东工业大学土木与交通工程学院, 广东广州 510006

收稿日期:2015-10-12 出版日期:2017-01-09 发布日期:2017-01-09
通信作者: 杨雪强(1966-),男,教授,博士,主要研究方向为岩土本构关系、边坡及地基处理.E-mail:xqyfls@126.com E-mail:xqyfls@126.com
作者简介:徐朝阳(1966-),男,高级工程师,硕士,主要研究方向为软基处理等.
基金资助:
中国电力投资集团公司科技项目（2014-028-NFD-KJ-X）

Numerical Analysis and Consolidation Mechanism Research of Vacuum-Surcharge Preloading Soft Clay

Xu Chao-yang¹, Liu Ming¹, Hu Shu-zhi², Yang Xue-qiang³

1. Zhuhai-Hengqin Electrical Co. Ltd., of China Electrical Investment Group Company, Zhuhai 519031, China;
2. Shenzhen Municipal Design and Research Institute Co. Ltd., Shenzhen 518029, China;
3. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China

Received:2015-10-12 Online:2017-01-09 Published:2017-01-09

摘要/Abstract

摘要：

以珠海横琴岛多联供燃气能源站项目地基处理工程为算例，基于修正剑桥模型及考虑软土的渗透特性，利用ABAQUS软件对二维平面应变真空-堆载联合预压问题进行了数值模拟，对软土竖向沉降、孔隙水压力以及水平位移分布等进行了分析，并与实测值进行了对比.从计算结果可知，由于加固机理的不同，真空-堆载联合预压加固软土地基有更好的加固效果.

关键词: 真空-堆载预压, 修正剑桥模型, 数值分析, 固结机理

Abstract:

A soft clay consolidation project by using vacuum-surcharge preloading method was conducted in Zhuhai about two year ago, and finite element numerical analysis under two-dimensional plane strain condition, in which modified Cam model and soft clay permeating characteristics are considered, is finished in details for the project, with corresponding calculating results such as soft clay vertical settlement, horizontal displacement, and pore water pressure, et al. beengiven and compared with the project measuring results. Based on the calculation results, the vacuum-surcharge preloading method for the soft clay has a better consolidation effect in practice because of its effective consolidation mechanism.

Key words: vacuum-surcharge preloading, modified Cam model, numerical analysis, consolidation mechanism

中图分类号:

U416.0

徐朝阳, 刘明, 胡舒之, 杨雪强. 真空-堆载联合预压地基的数值计算及加固机理探讨[J]. 广东工业大学学报, 2017, 34(01): 31-39.

Xu Chao-yang, Liu Ming, Hu Shu-zhi, Yang Xue-qiang. Numerical Analysis and Consolidation Mechanism Research of Vacuum-Surcharge Preloading Soft Clay[J]. Journal of Guangdong University of Technology, 2017, 34(01): 31-39.

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真空-堆载联合预压地基的数值计算及加固机理探讨

Numerical Analysis and Consolidation Mechanism Research of Vacuum-Surcharge Preloading Soft Clay

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