复杂地形条件下道路桥梁桩基综合施工技术

Comprehensive Construction Technology of Road and Bridge Pile Foundation Under Complex Terrain Condition

由于复杂地形条件下道路桥梁桩基施工具有一定难度,现有施工技术难以把控施工质量,在实际应用中,施工后经常出现断桩情况,并且断桩数量较多,为此提出复杂地形条件下道路桥梁桩基综合施工技术。在施工前对施工地段进行试挖,确定放样点计划以及桩体阻力;通过桩基地表土层开挖,桩孔内混凝土护壁修建,完成道路桥梁桩基成孔施工;通过在桩孔内钢筋笼进行混凝土灌注,完成成桩施工。经实验证明,新技术施工后断桩数量少于传统技术,具有良好的可行性。

Due to the difficulty of road and bridge pile foundation construction under complex terrain conditions,the existing construction technology is difficult to control the construction quality.In practical application,broken piles often occur after construction,and the number of broken piles is large,so the comprehensive construction technology of road and bridge pile foundation under complex terrain conditions is proposed.Before construction,test the construction site,determine the setting out point plan and pile resistance;complete the pile foundation by filling the concrete into the steel cage in the pile hole.The experiment has proved that the number of broken piles after the application of new technology is smaller than that of the traditional technology,and has good feasibility.