软土地基地区高速公路路基沉降的数值模拟  

Numerical Simulation of Subgrade Foundation Settlement of Expressways in Soft Soil Area

作　　者：谢剑康[1] 李艳萍[2] 

机构地区：[1]南京交通职业技术学院路桥与港航工程学院,江苏南京211188 [2]南京交通职业技术学院建筑工程学院,江苏南京211188

出　　处：《南京工程学院学报（自然科学版）》2015年第4期78-82,共5页Journal of Nanjing Institute of Technology(Natural Science Edition)

摘　　要：采用岩土工程有限元计算软件Geostudio对软土地基上路基沉降进行有限元数值模拟,得到在软土地基上的路基沉降趋势为先快后慢,并且路基土在竖向位移的基础上存在一定程度的横向位移.本文还对软土地基上的路基沉降处置方法进行探讨,分析堆载预压,化学改良等处理手段的内在机理,对软土路基沉降的理论研究具有一定借鉴意义,并对实际施工具有一定的指导意义.This paper uses Geostudio, software for studying finite elements of geotechnical engineering, to simulate subgrade settlements in soft soil foundations. The results show that subgrade in soft soil foundations settles fast and then slowly, and that vertical displacement of the subgrade soil is found before a certain degree of horizontal displacement occurs. In addition, this paper discusses approaches to addressing subgrade settlements, for example, the intrinsic mechanism for surcharge preloading and chemical modification. This study sheds light on the theoretical research into subgrade settlements of soft soil foundations, and on actual constructions.

关 键 词：高速公路 软土地基 路基沉降 数值模拟 

分 类 号：U416[交通运输工程—道路与铁道工程]