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以广东西部沿海某高速公路为依托,针对该路段纵向裂缝处治的两种加固方式,建立三维有限元模型,同时考虑路面超载和地下水位变化的影响,计算加固后路基的变形情况,对比分析两种加固方式的加固效果。分析表明:坡脚采用预应力管桩的加固方案1效果比在坡脚和路基范围内均采用预应力管桩的加固方案2效果要差。现场监测结果反映方案2加固后路基变形趋于稳定。因此,在病害处治中应合理选择加固方案。
Based on a highway along the west coast of Guangdong Province, three-dimensional finite element models were established for two types of reinforcement methods for longitudinal cracks in this section. The effects of road surface overloading and groundwater table changes were calculated to calculate the deformation of the subgrade after reinforcement. Comparing two Reinforcement of the kind of reinforcement effect. The analysis shows that the reinforcement scheme 1 using the prestressed pipe pile at the foot of the slope is less effective than the reinforcement scheme 2 using the prestressed pipe pile both at the foot of the slope and the subgrade. Site monitoring results reflect the reinforcement of subgrade 2 stabilized after stabilization. Therefore, in the disease treatment should choose a reasonable reinforcement plan.