基于稳定和变形计算的拓宽工程旧路纵向裂缝成因分析

Cause Analysis of Old Road Longitudinal Crack for Widening Engineering Based on Stability and Deformation Calculation

结合典型旧路拓宽工程出现的纵向裂缝,针对旧路地基未进行处理,新路采用复合地基处理的情况,采用极限平衡、数值模拟等方法进行稳定、变形计算。在验证模型正确性的基础上,对新旧路堤变形性状进行了详细分析,根据分析结果研究旧路纵向裂缝的成因,并提出处治方案。

Combining with the longitudinal crack phenomenon which appears within the typical widening engineering of old road, this paper focuses on tile situation which the foundation treatnlent is not done on the old road while composite foundation processing is used on the new mad. Stability and deformation calculation are completed with several ways such as limil equilibrium and nmnerical simulation. Based on the confirmation of the correctness of model, it analzes the deformation behavior of the old and new embankment in detail and researches the cause of hmgitudinal crack, and finally solulinn for this situation is proposed.