The structure formed by high-strength pipe piles and prefabricated slab beams is called pile slab structure.The 13m span pile slab bridge is the first fully assembled standard span bridge structure based on pipe piles,in which the pipe piles,cap beams,and main beams are all prefabricated in the factory,and the pile foundation is constructed using the driving method.Standardized design,factory production,and assembly construction have been achieved in the field of bridge construction.Firstly,from a design perspective,the con-struction and stress characteristics of the key node connections between column and bent cap,pipe pile and col-umn,were introduced.Then,based on actual engineering projects,the calculation methods for the vertical bearing capacity of a single pile and the final hammer penetration were provided.Finally,the main control points for the construction quality of pipe piles were given.Through calculation and analysis,the node connec-tion of the pipe pile was reliable in force bearing.The vertical bearing capacity and final hammer penetration of a single pile constructed by the driving method should be first estimated according to the formula and determined through pile testing.The final construction should be controlled by both pile length and penetration.
关键词
高强管桩/打入法施工/终锤贯入度/桩板桥
Key words
High strength pipe piles/Driving method construction/Final hammer penetration/Pile slab bridge
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