花管注浆在新旧路基接槎施工中的应用

The Application of Linkage Construction in the New and Old Roadbed to Grout Through Screen Pipe

本文介绍路基加宽部位与旧路接槎处通过花管注浆加固土体，使路面接槎部位下部土体形成整体结构，有效地提高了路基、路面接缝处的土体承载力，防止不均匀沉降产生路面裂缝。

This paper introduces grout through screen pipe to reinforce soil mass in the roadbed widening parts with the linkage of old road, which can form a whole structure with under soil mass in the linkage of the road. It can ef ectively improve the bearing capacity of soil subgrade and the linkage of pavement to prevent the uneven set lement which can lead to cracks.