摘要
软土地基沉降控制是高速公路建设中的关键技术问题。依托南京长江四桥北接线工程,基于实测沉降数据,采用PLAXIS软件对典型断面路堤荷载下的承载变形特性进行了数值模拟,将沉降计算值与实测值进行了对比分析,揭示了高速公路湿喷桩复合地基加固软基沉降特性和机理,并对湿喷桩复合地基方法处理的软基沉降的预测方法进行了对比分析。
The settlement of soft foundation is the key technology problem in expressway construction.Based on the measured settlement data of the Fourth Nanjing Yangtze River Bridge engineering,the bearing and deformation mechanisms of the typical sections are analyzed by PLAXIS software. The numerical simulation results are compared with the field measured results to verify the validity of the numerical simulation method. Furthermore, the settlement characteristics and mechanisms of soft foundation reinforced by wet spraying cement-soil mixing piles are revealed. The settlement prediction methods of the wet spraying cement-soil mixing pile composite foundation are also studied.
出处
《施工技术》
CAS
北大核心
2016年第5期69-73,共5页
Construction Technology
基金
国家自然科学基金项目(51420105013
51378177)
关键词
公路工程
高速公路
复合地基
沉降
预测
数值模拟
road construction
expressway
composite foundation
settlement
prediction
simulation
