城市道路挖掘修复现状分析  

Analysis of Present Situation of Excavation and Repair of Urban Roads

作　　者：吕荔炫[1] 凌建明[1] 袁文平 商国平 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海200092 [2]上海市政工程管理处,上海200030

出　　处：《城市道桥与防洪》2005年第6期104-106,共3页Urban Roads Bridges & Flood Control

摘　　要：通过对既有掘路的现场调查与测试,发现修复后的道路使用性能明显下降,存在沉降、边缘平行开裂、修复区龟裂和路表突起、坑洞等损坏形式。分析表明,道路开挖前后受力模式的变化、回填土路基过大的塑性变形及开挖界面的滑动剪切破坏是造成修复区路面损坏的主要原因。Through the investigation and test of the site of the existing excavation road it found that the utilization performance of the roads after repair obviously drops and there are damage forms such as settlement, parallel cracking at edges, tortoise cracking in the repairing area and projecting road pavement and pits etc. The analysis shows that the variation of the formed mode before and after the excavation of roads, the plastic deformation due to too large backfill subgrade, the sliding, shear failure of the excavated interface are the main cause of pavement damage.

关 键 词：城市道路 挖掘修复 路面病害 成因机理 

分 类 号：U418.6[交通运输工程—道路与铁道工程]