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Lock opening steel pipe pile cofferdam suitable for deep water shallow covering layer and construction method of lock opening steel pipe pile cofferdam
The invention discloses a fore shaft steel pipe pile cofferdam suitable for a deep water shallow covering layer and a construction method of the fore shaft steel pipe pile cofferdam. The construction method of the fore shaft steel pipe pile cofferdam comprises the steps of fore shaft steel pipe pile driving, hole guiding construction, reaming construction, grouting pipe grouting and steel pipe pile bottom sealing. The fore shaft steel pipe pile cofferdam comprises a fore shaft steel pipe pile enclosing structure, bottom sealing concrete, girders and diagonal bracing steel pipes. The mode that the I-shaped steel is inserted into the C-shaped fore shaft pipe to form the active fore shaft steel pipe pile is adopted, and the bottom is installed in a hole guiding and reaming mode, so that the problem that the fore shaft is torn when encountering a hard rock stratum in the steel pipe pile driving process due to the fact that the rigidity and deformation of the fore shaft and the steel pipe pile are not coordinated is solved; and grouting is conducted on the covering layer with the water-rich property through the grouting pipe, and the water stopping effect is further improved. The bottom of the cofferdam is sealed to form the cofferdam bottom continuous wall, the continuous wall and the rock stratum are tightly attached together, the using amount of concrete is small, the construction efficiency is high, the technology is simple, and cost is low.
本发明公开了一种适用于深水浅覆盖层的锁口钢管桩围堰及其施工方法，锁口钢管桩围堰的施工方法包括：锁口钢管桩施打、引孔施工、扩孔施工、注浆管注浆以及钢管桩封底。锁口钢管桩围堰包括锁口钢管桩围合结构、封底混凝土、围梁和对撑钢管。本发明采用工字钢插入C型锁口管内部形成活性的锁口钢管桩的方式，并且底部采用引孔以及扩孔的方式进行安装，避免因锁口与钢管桩刚度及变形不协调导致的钢管桩施打过程中遇坚硬岩层时出现的锁口撕裂问题，对具有富水性的覆盖层处采用注浆管注浆，进一步提高了止水效果。围堰底部封底形成围堰底部连续墙，并且连续墙与岩层紧密贴合在一起，混凝土用量少，施工效率高、工艺简单、成本低。
Lock opening steel pipe pile cofferdam suitable for deep water shallow covering layer and construction method of lock opening steel pipe pile cofferdam
The invention discloses a fore shaft steel pipe pile cofferdam suitable for a deep water shallow covering layer and a construction method of the fore shaft steel pipe pile cofferdam. The construction method of the fore shaft steel pipe pile cofferdam comprises the steps of fore shaft steel pipe pile driving, hole guiding construction, reaming construction, grouting pipe grouting and steel pipe pile bottom sealing. The fore shaft steel pipe pile cofferdam comprises a fore shaft steel pipe pile enclosing structure, bottom sealing concrete, girders and diagonal bracing steel pipes. The mode that the I-shaped steel is inserted into the C-shaped fore shaft pipe to form the active fore shaft steel pipe pile is adopted, and the bottom is installed in a hole guiding and reaming mode, so that the problem that the fore shaft is torn when encountering a hard rock stratum in the steel pipe pile driving process due to the fact that the rigidity and deformation of the fore shaft and the steel pipe pile are not coordinated is solved; and grouting is conducted on the covering layer with the water-rich property through the grouting pipe, and the water stopping effect is further improved. The bottom of the cofferdam is sealed to form the cofferdam bottom continuous wall, the continuous wall and the rock stratum are tightly attached together, the using amount of concrete is small, the construction efficiency is high, the technology is simple, and cost is low.
本发明公开了一种适用于深水浅覆盖层的锁口钢管桩围堰及其施工方法，锁口钢管桩围堰的施工方法包括：锁口钢管桩施打、引孔施工、扩孔施工、注浆管注浆以及钢管桩封底。锁口钢管桩围堰包括锁口钢管桩围合结构、封底混凝土、围梁和对撑钢管。本发明采用工字钢插入C型锁口管内部形成活性的锁口钢管桩的方式，并且底部采用引孔以及扩孔的方式进行安装，避免因锁口与钢管桩刚度及变形不协调导致的钢管桩施打过程中遇坚硬岩层时出现的锁口撕裂问题，对具有富水性的覆盖层处采用注浆管注浆，进一步提高了止水效果。围堰底部封底形成围堰底部连续墙，并且连续墙与岩层紧密贴合在一起，混凝土用量少，施工效率高、工艺简单、成本低。
Lock opening steel pipe pile cofferdam suitable for deep water shallow covering layer and construction method of lock opening steel pipe pile cofferdam
一种适用于深水浅覆盖层的锁口钢管桩围堰及其施工方法
LI JIANG (author) / BIE SHIYONG (author) / YU PEICHI (author) / YANG ZHENGWEI (author) / AN HAOBING (author) / HUANG YONG (author) / QI WEINING (author) / YE SHAOQI (author) / ZHONG LIANGGEN (author) / WU JIANXIAN (author)
2023-03-28
Patent
Electronic Resource
Chinese
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