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高速公路上桥头背板与路基联接处往往是施工中的薄弱环节,如果因条件所限或施工质量控制不到位,就会导致承载力达不到设计要求甚至有地基下沉造成跳车的现象,这也是高速公路长年研究而未解决的问题,强夯和压力注浆是解决此种现象的最好办法。现结合实践摸索出了一套经济、简便、快速而有效的处理方法,很好地解决了高速公路桥头跳车的这一隐患。
On the highway, the bridge head backplane and subgrade joints are often the weak links in the construction. If the conditions are limited or the construction quality control is not in place, the bearing capacity will not reach the design requirements and even the foundation subsidence will cause the jump phenomenon This is also a problem that the highway has not solved for many years of study. Dynamic compaction and pressure grouting are the best ways to solve this phenomenon. Now combined with the practice to explore a set of economic, simple, rapid and effective approach, a good solution to the highway bridgehead hurdle this hidden danger.