基于目标的高速公路差异沉降主动控制研究  

Study on Initiative Control of Expressway Differential Settlement Based on Goal

作　　者：刘靖[1] 王选仓[2] 高志伟[2] 

机构地区：[1]河北省保定市交通局,河北保定071000 [2]长安大学公路学院,陕西西安710064

出　　处：《筑路机械与施工机械化》2010年第8期48-50,53,共4页Road Machinery & Construction Mechanization

基　　金：河北省交通科技项目(Y-060238)

摘　　要：通过建立有限元模型,对路面结构因差异沉降引起的附加应力进行分析,并考虑路面结构的疲劳衰减性能,提出了高速公路路基差异沉降控制目标为变坡率小于0.37%。将路基差异沉降分为4个级别,并对实际工程竣工后可能出现的路基差异沉降进行预估,对于不同级别差异沉降提出相应的处治措施,达到差异沉降主动控制的目的。Additional stress in pavement structure caused by differential settlement is analyzed by establishing finite element model. Considering the fatigue behavior of pavement, the goal of differential settlement control is proposed, which is to keep the grade changing rate lower than 0.37%. The differential settlement is graded as four levels, and the possible values of subgrade after the construction are estimated. Corresponding measures are presented to help achieve the goal of initiative control of differential settlement.

关 键 词：差异沉降 沉降预估 有限单元法 主动控制 

分 类 号：U416.1[交通运输工程—道路与铁道工程]