真空–堆载联合预压地基的数值计算及加固机理探讨

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....

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Bibliographic Details
Published in广东工业大学学报 Vol. 34; no. 1; pp. 31 - 39
Main Author 徐朝阳;刘明;胡舒之;杨雪强
Format Journal Article
LanguageChinese
Published 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%深圳市市政设计研究院有限公司,广东深圳,518029%广东工业大学土木与交通工程学院,广东广州,510006 2017
Subjects
真空–堆载预压;修正剑桥模型;数值分析;固结机理
真空-堆载预压
修正剑桥模型
modified Cam model
数值分析
固结机理
numerical analysis
vacuum-surcharge preloading
consolidation me-chanism
Online AccessGet full text
ISSN1007-7162
DOI10.12052/gdutxb.150110

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Summary: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.
Bibliography:A soft clay consolidation project by using vacuum-surcharge preloading method was conducted inZhuhai about two year ago,and finite element numerical analysis under two-dimensional plane strain condition,inwhich modified Cam model and soft clay permeating characteristics are considered,is finished in details for theproject,with corresponding calculating results such as soft clay vertical settlement,horizontal displacement,andpore water pressure,et al.beengiven and compared with the project measuring results.Based on the calculationresults,the vacuum-surcharge preloading method for the soft clay has a better consolidation effect in practicebecause of its effective consolidation mechanism.
vacuum-surcharge preloading; modified Cam model; numerical analysis; consolidation mechanism
44-1428/T
ISSN:1007-7162
DOI:10.12052/gdutxb.150110