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本文介绍了北京石景山地区广宁公路与丰沙铁路立交桥路基加固试验。试验结果证明,对于高大跨度和净空的立交桥箱体,在横穿路基施工过程中,为防止土体塌坍,确保铁路运输安全,施工前对路基土体进行预注浆加固是必要的,技术上是可行的。
This paper introduces the test of subgrade reinforcement of Quang Ninh Highway and Fengsha Railway overpass in Shijingshan District, Beijing. The test results show that for high-span and clearance bridges, it is necessary to pre-grout the subgrade soil before construction so as to prevent the collapse of the soil and ensure the safety of railway transportation. It is feasible.