青藏铁路多年冻土区桥头路基变形原因及对策研究

桥头路基的变形问题是普遍存在的影响冻土区道路工程稳定的技术难题,结合青藏铁路多年冻土区桥头路基的变形问题,采用资料调研、现场调查、理论分析和总结等研究手段,对运营后多年冻土区桥头路基变形的特征及沉降原因进行分析研究,提出了通过改善地基多年冻土环境和优化桥头路基防排水系统等措施对桥头路基病害进行治理的方法。

Causes and Countermeasures for Subgrade Defects at Bridgehead in Permafrost Area of Qinghai~Tibet Railway

Bridge subgrade deformation is a technical problem in Permafrost area. This article addresses the deformation at bridgehead in the permafrost region of Qinghai Tibet Railway by means of literature survey,field survey,theoretical analysis and summary with focus on study and analysis of the causes and characteristics of bridge embankment deformation in permafrost region since the Qinghai-Tibet Railway was put into operation. Forwarded are also such measures to treat these defects as improvement of permafrost environment and optimization of drainage system at bridgehead,