摘要
尽管在高等级公路新建和扩建工程中会采取相应的地基处理措施来进行沉降控制,但在很多情况下仍不能取得良好的效果.本文提出一种新的软土地基处理方式,即综合应用刚性桩和竖向土工材料进行公路地基处理.为把握路堤荷载作用下综合应用刚性桩和竖向土工材料进行地基处理的工作性状,应用FLAC3D建立三维分析模型.通过对新建路堤和拓宽路堤两种情况进行模拟计算,从路堤的沉降、地基土侧向位移以及稳定性等方面进行分析研究.计算结果表明:刚性桩和竖向土工材料的综合应用能够有效控制地基土体侧向位移,从而能够减小路基的总体沉降,并能很好的控制公路扩建工程中路堤顶面的差异沉降,加固效果明显.
Although appropriate actions were taken in the new construction and expansion projects to control the embankments＇ deformation and stability,but good results cannot be caught in many cases.A new foundation treatment method is put forward;in this method the foundation was handled by the integrated application of rigid piles and vertical geotextile material.To investigate the performance of the ground under the embankment loads handled by the application of rigid piles and vertical geotextile material,a three-dimensional model is built by the FLAC3 D.Through the numerical analysis of the new embankment and widening embankment situations,the settlement and lateral displacement and stability of the foundation are analyzed comprehensively.The results show that the integrated application of the rigid piles and vertical geotextile material can effectively control the ground lateral displacement,and then can reduce the settlement of the embankment,and reduce the differential settlement between the new and old embankment;the reinforcement effect is quite obvious.
出处
《三峡大学学报（自然科学版）》
CAS
2015年第5期62-66,共5页
Journal of China Three Gorges University：Natural Sciences
基金
国家自然科学基金资助项目(51009054)
教育部科学技术研究重点项目(109077)
江苏省自然科学基金资助项目(BK2010513)
中央高校基本科研业务费专项资金资助(编号2014B04914)
关键词
软土地基
土工材料
刚性桩
侧向变形
数值分析
soft ground
geotextile material
rigid pile
lateral deformation
numerical analysis
作者简介
通信作者：丰土根（1975-），男，教授，博士，研究方向为土动力学教学与研究．E—mail：lbwang_06@163．com
