Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Combined stiffening steel casing for cast-in-situ bored pile construction
The invention relates to the technical field of steel pile casings, and discloses a combined stiffening steel pile casing for cast-in-situ bored pile construction, which comprises an inner pile casing, and the surface of the inner pile casing is sleeved with an outer pile casing; through the design that the steel pile casing is divided into the inner pile casing and the outer pile casing, the inner pile casing is used as a tool in the construction process, the vertical rigidity of the first stage is mainly provided, and downward traction force is provided for the outer pile casing under the action of the lower stiffening steel plate on the blade angle reinforcing steel ring of the outer pile casing; the outer cylinder steel plate vertically bears pulling force instead of pressure in the hole forming process, the instability phenomenon is avoided, when stress enters the second stage after hole forming is completed, the inner protection cylinder is pulled out, only the outer cylinder is left to serve as a protection wall, due to the fact that the outer protection cylinder only needs to provide annular rigidity and can be achieved through a low-cost structure, the inner protection cylinder is large in rigidity and high in cost, and the inner protection cylinder can be used as the protection wall. Therefore, the purposes of reliable technology and low cost can be achieved through the device.
本发明涉及钢护筒技术领域，且公开了一种用于钻孔灌注桩施工的组合式加劲钢护筒，包括内护筒，所述内护筒的表面套设有外护筒；本发明通过将钢护筒分内护筒和外护筒的设计，内护筒作为施工过程工具使用，主要提供第一阶段的竖向刚度，在外护筒的刃角加强钢圈上面下加劲钢板的作用下，为外护筒提供向下牵引力，使外筒钢板在成孔过程中竖向承受的是拉力而不是压力，避免失稳现象发生，成孔完成后受力进入第二阶段时，将内护筒拔出、仅留下外筒作护壁使用，由于外护筒仅需要提供环向刚度，可用较低成本构造实现，内护筒刚度大，成本高，但可以重复使用，故通过本装置可实现技术可靠，成本低廉的目标。
Combined stiffening steel casing for cast-in-situ bored pile construction
The invention relates to the technical field of steel pile casings, and discloses a combined stiffening steel pile casing for cast-in-situ bored pile construction, which comprises an inner pile casing, and the surface of the inner pile casing is sleeved with an outer pile casing; through the design that the steel pile casing is divided into the inner pile casing and the outer pile casing, the inner pile casing is used as a tool in the construction process, the vertical rigidity of the first stage is mainly provided, and downward traction force is provided for the outer pile casing under the action of the lower stiffening steel plate on the blade angle reinforcing steel ring of the outer pile casing; the outer cylinder steel plate vertically bears pulling force instead of pressure in the hole forming process, the instability phenomenon is avoided, when stress enters the second stage after hole forming is completed, the inner protection cylinder is pulled out, only the outer cylinder is left to serve as a protection wall, due to the fact that the outer protection cylinder only needs to provide annular rigidity and can be achieved through a low-cost structure, the inner protection cylinder is large in rigidity and high in cost, and the inner protection cylinder can be used as the protection wall. Therefore, the purposes of reliable technology and low cost can be achieved through the device.
本发明涉及钢护筒技术领域，且公开了一种用于钻孔灌注桩施工的组合式加劲钢护筒，包括内护筒，所述内护筒的表面套设有外护筒；本发明通过将钢护筒分内护筒和外护筒的设计，内护筒作为施工过程工具使用，主要提供第一阶段的竖向刚度，在外护筒的刃角加强钢圈上面下加劲钢板的作用下，为外护筒提供向下牵引力，使外筒钢板在成孔过程中竖向承受的是拉力而不是压力，避免失稳现象发生，成孔完成后受力进入第二阶段时，将内护筒拔出、仅留下外筒作护壁使用，由于外护筒仅需要提供环向刚度，可用较低成本构造实现，内护筒刚度大，成本高，但可以重复使用，故通过本装置可实现技术可靠，成本低廉的目标。
Combined stiffening steel casing for cast-in-situ bored pile construction
一种用于钻孔灌注桩施工的组合式加劲钢护筒
GUO TAIJUN (Autor:in) / LIU GUOQIANG (Autor:in) / FENG WEIWEN (Autor:in) / ZHANG PENG (Autor:in) / ZHAN SUHONG (Autor:in) / CHEN JICAN (Autor:in)
14.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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