基于地基沉降速率法的老路拓宽控制指标分析  

Control Indicators Analysis for Old Road Widening Based on Foundation Settlement Rate Method

作　　者：谢浩岩 朱大伟[1] 王雷[1] 张郑利[1] 

机构地区：[1]江苏省交通科学研究院股份有限公司,江苏南京210017

出　　处：《现代交通技术》2014年第3期5-8,共4页Modern Transportation Technology

摘　　要：文章通过沉降速率法,建立沉降速率与工后沉降之间的关系式,并根据路面材料力学性能,确定其容许的最大不均匀沉降量,将其作为允许工后沉降来推算沉降速率,并依托G205宿迁段改建工程,用沉降速率法分析了位移较大的3个断面,得出其沉降速率应控制在1.2～2.3 mm/月.The relation between settlement rate and the post-construction settlement of subgrade is established using settlement rate method. The allowable maximun value of settlement is confirmed according to mechanical properties of pavement materials, which can be used as allowable post-construction settlement to calculate the settlement rate. Taking the reconstruction project of Suqian section of G205 as an example, the settlement rate method is used to analysis the three sections with relatively large displacement. The results show that the settlement rate should be controled within 1.2 to 2.3mm per month.

关 键 词：老路拓宽 地基沉降 不均匀沉降 沉降速率 工后沉降 

分 类 号：U418.8[交通运输工程—道路与铁道工程]