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新增二线铁路的人工挖孔桩和抗滑桩离既有铁路行车距离很近,为减少和避免对既有铁路构造物造成扰动和影响行车安全,利用水钻施工不便松动爆破施工较硬层岩质桩基,水钻施工开挖出桩基断面,通过分层取芯、破裂、取出石块循环工作程序达到成孔目的。本文通过施工单位实物法进行水钻施工桩基单价分析,为同类项目施工成本确定和定额编制提供参考。
Artificial digging piles and anti-slide piles of the newly added second-line railway are very close to the existing ones. In order to reduce and avoid disturbance to the existing railway structures and affect traffic safety, Quality pile foundation, the construction of the excavation of pile foundation pile cross-section, through the stratified core, broken, remove the block cycle work procedures to achieve the purpose of forming holes. In this paper, through the physical method of construction unit, the unit price analysis of pile foundation for the construction of drilling stones is provided, which can provide reference for the construction cost determination and quota establishment of similar projects.