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Offshore rock-socketed single pile foundation construction excavation device and construction method thereof
The invention discloses an offshore rock-socketed single pile foundation construction excavation device and a construction method thereof, and belongs to the technical field of rock-socketed pile construction. According to the technical scheme, the offshore rock-socketed single pile foundation construction excavation device comprises a pile body and a steel casing, the diameter of the steel casing is larger than that of the pile body, a pouring cavity is formed between the steel casing and the pile body, and the offshore rock-socketed single pile foundation construction excavation device further comprises a vertical guide rail fixed to the outer wall of the pile body and coaxial with the pile body; the rock crushing process of the rock stratum in the pile body is omitted, the excavation area is limited to the annular area around the pile body, the excavation amount is small, damage disturbance to the bedrock stratum is small, weakening of the bearing capacity of the bedrock stratum is small, the construction efficiency is high, the downward pressure in the pile body installation process is provided by the difference value of the self weight of the pile body and the inner and outer friction resistance of the pile body, and the construction cost is low. Hole forming is carried out through autorotation and circumferential movement of the tunneling system, heavy piling equipment and drilling equipment are not needed, and the construction cost is greatly reduced.
本发明公开了一种海上嵌岩单桩基础施工开挖装置及其施工方法，属于嵌岩桩施工技术领域。本发明采用的技术方案为，一种海上嵌岩单桩基础施工开挖装置，包括桩身和钢护筒，钢护筒直径大于桩身，钢护筒与桩身之间形成灌注腔，还包括：竖向导轨，固定在桩身的外壁，竖向导轨与桩身同轴设置；本发明节省了桩身内岩层的碎岩过程，且开挖区域局限于桩身周围的环形区域，开挖量小，对基岩层的破坏扰动较小，基岩层承载力削弱较小，施工效率高，桩身的安装过程中的下压力是由桩身自重与桩身内、外摩阻力的差值提供，通过掘进系统的自转与环向运动进行成孔，不需要重型打桩设备与钻孔设备，施工成本得到很大降低。
Offshore rock-socketed single pile foundation construction excavation device and construction method thereof
The invention discloses an offshore rock-socketed single pile foundation construction excavation device and a construction method thereof, and belongs to the technical field of rock-socketed pile construction. According to the technical scheme, the offshore rock-socketed single pile foundation construction excavation device comprises a pile body and a steel casing, the diameter of the steel casing is larger than that of the pile body, a pouring cavity is formed between the steel casing and the pile body, and the offshore rock-socketed single pile foundation construction excavation device further comprises a vertical guide rail fixed to the outer wall of the pile body and coaxial with the pile body; the rock crushing process of the rock stratum in the pile body is omitted, the excavation area is limited to the annular area around the pile body, the excavation amount is small, damage disturbance to the bedrock stratum is small, weakening of the bearing capacity of the bedrock stratum is small, the construction efficiency is high, the downward pressure in the pile body installation process is provided by the difference value of the self weight of the pile body and the inner and outer friction resistance of the pile body, and the construction cost is low. Hole forming is carried out through autorotation and circumferential movement of the tunneling system, heavy piling equipment and drilling equipment are not needed, and the construction cost is greatly reduced.
本发明公开了一种海上嵌岩单桩基础施工开挖装置及其施工方法，属于嵌岩桩施工技术领域。本发明采用的技术方案为，一种海上嵌岩单桩基础施工开挖装置，包括桩身和钢护筒，钢护筒直径大于桩身，钢护筒与桩身之间形成灌注腔，还包括：竖向导轨，固定在桩身的外壁，竖向导轨与桩身同轴设置；本发明节省了桩身内岩层的碎岩过程，且开挖区域局限于桩身周围的环形区域，开挖量小，对基岩层的破坏扰动较小，基岩层承载力削弱较小，施工效率高，桩身的安装过程中的下压力是由桩身自重与桩身内、外摩阻力的差值提供，通过掘进系统的自转与环向运动进行成孔，不需要重型打桩设备与钻孔设备，施工成本得到很大降低。
Offshore rock-socketed single pile foundation construction excavation device and construction method thereof
一种海上嵌岩单桩基础施工开挖装置及其施工方法
LIU JINZHONG (author) / MA SHUNSHUN (author) / KONG DESEN (author) / WANG KAI (author)
2023-04-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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