倒T型支挡结构在路肩病害整治中的应用-《高速铁路技术》

文章信息/Info

Title:: Application of Inverted T-Shaped Retaining Structure in Treatment of Shoulder Disease

Author(s):: HOU Haifang; QI Hua; 1. China Railway Shanghai Bureau Group Co., Ltd., Ningbo 315012, China;
2. Ningbo Municipal Engineering Construction Group Co., Ltd., Ningbo 315046, China

Keywords:: existing railway|subgrade|shoulder|inverted T-shaped retaining structure

摘要:: 路基持续下沉易导致路肩宽度不足，常规的路肩加宽方法施工速度缓慢，对既有铁路行车影响较大，且无法缓解下沉迹象，因此有必要研究一种新型的路肩加宽整治方法。文章系统总结既有铁路路肩宽度不足的原因，对比分析常见路肩加宽整治方法的优缺点，研究提出一种现浇倒T型支挡结构，该结构施工简便、安全性高、工期短，可同时用于整治既有铁路路肩宽度不足及路基下沉等病害。该结构已成功应用于宁波北环线路肩整治工程，整治效果显著。

Abstract:: The continuous subgrade settlement is easy to cause the insufficient width of the shoulder, the conventional shoulder widening method is slow in construction speed, and has great influence on the existing line operation, and cannot alleviate the signs of subsidence. Therefore, it is necessary to study a new way of widening the shoulder. This paper summarizes the reasons of insufficient width of existing railway shoulder, analyzes the advantages and disadvantages of common shoulder widening methods, puts forward a cast-in-place inverted T-shaped retaining structure, the structure with simple construction, high safety and short construction period can be used for treatment of insufficiency of shoulder width and subgrade settlement of existing railway. This structure has been successfully applied in Ningbo northern link shoulder training works, the treatment effect is remarkable.