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在城市地下轨道交通施工过程中,防水问题一直是施工中的重点和难点。虽然在施工过程中对防水的施工质量控制已经有很大提升,但是一直未能达到预期的效果。结合工程实践,就暗挖PBA法施工中顶纵梁防水层施工技术进行了研究,对该部位的防水层在施工和保护过程中提出了具体措施。
In the urban underground rail transit construction process, waterproofing has been the construction of the focus and difficulty. Although the construction quality of waterproofing control has been greatly improved, but has not been able to achieve the desired results. Combined with engineering practice, the construction technology of roof longitudinal beam waterproofing layer in excavation of PBA method was studied, and specific measures were put forward in construction and protection of the waterproof layer in this part.