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Hole guiding and reaming combined lock catch steel pipe pile construction method
The invention provides a hole guiding and reaming combined lock catch steel pipe pile construction method, and belongs to the technical field of bridge construction. The problems that during construction of an existing cofferdam method, the influence of geological conditions is easily caused, steel pipe piles are difficult to be inserted into high-strength rock stratums, and the inserting efficiency is low are solved. The construction method comprises the following steps: building a construction platform, reserving the position of a lock catch steel pipe pile, drilling a guide hole in the position of the lock catch steel pipe pile by utilizing a rotary drilling rig, mounting, inserting and driving one by one in the guide hole position by adopting a crawler crane and a vibratory hammer until the guide hole position does not sink any more, closing after manufacturing a guide frame, and cleaning the hole in the lock catch steel pipe pile by adopting the rotary drilling rig after closing. And continuously guiding the hole by using the reamer bit, and circulating the operation until the designed elevation is reached. Hole guiding construction can be continued at the bottom of the steel pipe by adopting chambering type drilling, so that the construction problem of the lock catch steel pipe pile cofferdam in deepwater bare rock and hard rock sections is solved; the construction speed is high, manufacturing, machining, mounting and sinking are convenient and flexible, the process is simple, few devices are needed, and the construction cost can be reduced.
本发明提供一种引孔与扩孔结合的锁扣钢管桩施工方法，属于桥梁施工技术领域。为解决现有围堰法施工时易地质条件影响，钢管桩难以插打到高强度的岩层中，插打效率低的问题。搭设施工平台并预留出锁扣钢管桩位置，利用旋挖钻机在锁扣钢管桩位置引孔钻进，采用履带吊+振动锤在引孔位置进行单根逐根安装插打，至不再下沉为止，制作导向架后合拢，合龙后在锁扣钢管桩内部采用旋挖钻清孔，再利用扩孔钻头继续引孔，循环以上操作，直至跟进至设计标高。采用扩孔式钻孔可继续在钢管底部继续引孔施工，解决了深水裸岩、硬质岩地段锁扣钢管桩围堰施工难题；施工速度快，制作、加工、安装下沉方便灵活，工艺简单，所需设备少，有利于降低施工成本。
Hole guiding and reaming combined lock catch steel pipe pile construction method
The invention provides a hole guiding and reaming combined lock catch steel pipe pile construction method, and belongs to the technical field of bridge construction. The problems that during construction of an existing cofferdam method, the influence of geological conditions is easily caused, steel pipe piles are difficult to be inserted into high-strength rock stratums, and the inserting efficiency is low are solved. The construction method comprises the following steps: building a construction platform, reserving the position of a lock catch steel pipe pile, drilling a guide hole in the position of the lock catch steel pipe pile by utilizing a rotary drilling rig, mounting, inserting and driving one by one in the guide hole position by adopting a crawler crane and a vibratory hammer until the guide hole position does not sink any more, closing after manufacturing a guide frame, and cleaning the hole in the lock catch steel pipe pile by adopting the rotary drilling rig after closing. And continuously guiding the hole by using the reamer bit, and circulating the operation until the designed elevation is reached. Hole guiding construction can be continued at the bottom of the steel pipe by adopting chambering type drilling, so that the construction problem of the lock catch steel pipe pile cofferdam in deepwater bare rock and hard rock sections is solved; the construction speed is high, manufacturing, machining, mounting and sinking are convenient and flexible, the process is simple, few devices are needed, and the construction cost can be reduced.
本发明提供一种引孔与扩孔结合的锁扣钢管桩施工方法，属于桥梁施工技术领域。为解决现有围堰法施工时易地质条件影响，钢管桩难以插打到高强度的岩层中，插打效率低的问题。搭设施工平台并预留出锁扣钢管桩位置，利用旋挖钻机在锁扣钢管桩位置引孔钻进，采用履带吊+振动锤在引孔位置进行单根逐根安装插打，至不再下沉为止，制作导向架后合拢，合龙后在锁扣钢管桩内部采用旋挖钻清孔，再利用扩孔钻头继续引孔，循环以上操作，直至跟进至设计标高。采用扩孔式钻孔可继续在钢管底部继续引孔施工，解决了深水裸岩、硬质岩地段锁扣钢管桩围堰施工难题；施工速度快，制作、加工、安装下沉方便灵活，工艺简单，所需设备少，有利于降低施工成本。
Hole guiding and reaming combined lock catch steel pipe pile construction method
一种引孔与扩孔结合的锁扣钢管桩施工方法
LI CHENGBIN (author) / HAN CHUNGUANG (author) / WANG SONG (author) / WANG ZHENG (author) / FENG WANPENG (author) / YANG XIAN (author) / MA JIANWEN (author) / ZHANG FENGYU (author) / LI HAIQUAN (author) / ZHAO ZHENFENG (author)
2024-03-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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