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Pile pulling construction method based on low-clearance bridge lower support steel pipe pile
The invention provides a pile pulling construction method based on a lower support steel pipe pile of a low-clearance bridge, and belongs to the technical field of bridge construction. During construction of the lower support steel pipe pile of the low-clearance bridge, firstly, a vibratory hammer is adopted for applying excitation to the steel pipe pile to be pulled out, and soil around the steel pipe pile is promoted to be liquefied; the friction resistance on the side of the steel pipe pile is reduced under the action of high-frequency excitation, meanwhile, the steel pipe pile is lifted by a hydraulic oil cylinder to be gradually pulled out, then the pulled-out steel pipe pile is cut through cutting equipment, the steps are repeated till the steel pipe pile is completely pulled out, and finally the pile hole is backfilled. By the adoption of the pile pulling construction method based on the low-clearance handsome support steel pipe pile, the problems that in the pile pulling process, the utilization space is small, and the needed pile pulling counter force is large are solved, the project construction cost is saved, the construction progress is greatly accelerated, and the personal safety of operators is guaranteed to a certain degree.
本发明提供了一种基于低净空桥下支架钢管桩的拔桩施工方法，属于桥梁筑造技术领域，其在低净空桥下支架钢管桩施工时，首先采用振动锤对待拔出的钢管桩施加激振，促使钢管桩周边土壤液化，在高频激振作用下使得钢管桩侧的摩擦阻力减小，同时使用液压油缸提升钢管桩上升而逐拔钢管桩，再通过切割设备对拔出的钢管桩进行切割，以此循环，直至钢管桩完全拔出为止，最后对桩孔进行回填。本发明采用上述的一种基于低净空俏销支架钢管桩的拔桩施工方法，解决了拔桩过程中利用空间小、所需拔桩反力较大的问题，节省了项目施工成本，大大提高了施工的进度，且一定程度上保证了作业人员的人身安全。
Pile pulling construction method based on low-clearance bridge lower support steel pipe pile
The invention provides a pile pulling construction method based on a lower support steel pipe pile of a low-clearance bridge, and belongs to the technical field of bridge construction. During construction of the lower support steel pipe pile of the low-clearance bridge, firstly, a vibratory hammer is adopted for applying excitation to the steel pipe pile to be pulled out, and soil around the steel pipe pile is promoted to be liquefied; the friction resistance on the side of the steel pipe pile is reduced under the action of high-frequency excitation, meanwhile, the steel pipe pile is lifted by a hydraulic oil cylinder to be gradually pulled out, then the pulled-out steel pipe pile is cut through cutting equipment, the steps are repeated till the steel pipe pile is completely pulled out, and finally the pile hole is backfilled. By the adoption of the pile pulling construction method based on the low-clearance handsome support steel pipe pile, the problems that in the pile pulling process, the utilization space is small, and the needed pile pulling counter force is large are solved, the project construction cost is saved, the construction progress is greatly accelerated, and the personal safety of operators is guaranteed to a certain degree.
本发明提供了一种基于低净空桥下支架钢管桩的拔桩施工方法，属于桥梁筑造技术领域，其在低净空桥下支架钢管桩施工时，首先采用振动锤对待拔出的钢管桩施加激振，促使钢管桩周边土壤液化，在高频激振作用下使得钢管桩侧的摩擦阻力减小，同时使用液压油缸提升钢管桩上升而逐拔钢管桩，再通过切割设备对拔出的钢管桩进行切割，以此循环，直至钢管桩完全拔出为止，最后对桩孔进行回填。本发明采用上述的一种基于低净空俏销支架钢管桩的拔桩施工方法，解决了拔桩过程中利用空间小、所需拔桩反力较大的问题，节省了项目施工成本，大大提高了施工的进度，且一定程度上保证了作业人员的人身安全。
Pile pulling construction method based on low-clearance bridge lower support steel pipe pile
一种基于低净空桥下支架钢管桩的拔桩施工方法
LYU WEIHONG (author) / SUN BIN (author) / BAI FENG (author) / FU YONGDU (author) / QIAN YICHEN (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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