Pre-tensioning pre-stressed pipe pile connector and pipe pile connecting method

Abstract

The invention discloses a pre-tensioning pre-stressed pipe pile connector and a pipe pile connecting method, and belongs to the technical field of weak foundations of buildings. The pre-tensioning pre-stressed pipe pile connector comprises a pre-stressed main bar anchoring end plate and a tensioning anchoring end plate, wherein the pre-stressed main bar anchoring end plate and the tensioning anchoring end plate are parallel to each other and are connected through a main cylinder; and anchoring rods used for anchoring a pre-stressed pipe pile main bar are formed in the pre-stressed main bar anchoring end plate, and bolt holes opposite to the anchoring holes are formed in the tensioning anchoring end plate. The pre-tensioning pre-stressed pipe pile connector is anchored to the connection endof a pipe pile so that an upper pipe pile and a lower pipe pile can be connected directly through anchoring bolts, concrete and steel at the joint of the pipe piles are prevented from being damaged,and the crush resistance, bending resistance and pulling resistance of the pipe piles are ensured; the structure is simple, and the construction efficiency is effectively improved; and in addition, when a prestressed pipe pile is manufactured, the bolt holes can be matched with an external flange plate to control the tension of the pre-stressed main bar.

Description

technical field [0001] The invention relates to the technical field of building weak foundations, in particular to a pretensioned prestressed pipe pile connection joint and a pipe pile connection method. Background technique [0002] The existing pipe pile construction is connected by welding. The two ends of the pipe pile body are installed with prestressed main reinforcement anchoring end plates. The connection between the pipe pile and the lower pipe pile is to complete the construction connection of the upper pipe pile and the lower pipe pile by welding the groove and filling the weld seam. This welding connection method not only has complicated construction procedures and low construction efficiency, but also generally has defects caused by welding. The high temperature burns the concrete at the junction of the upper pipe pile and the lower pipe pile, thereby reducing the strength of the concrete. In addition, welding has an annealing effect on the material of the prest...

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Problems solved by technology

[0002] The existing pipe pile construction is connected by welding. The two ends of the pipe pile body are installed with prestressed main reinforcement anchoring end plates. The connection between the pipe pile and the lower pipe pile is to complete the construction connection of the upper pipe pile and the lower pipe pile by welding the groove and filling the weld seam. This welding connection method not only has complicated construction procedures and low construction efficiency, but also generally has defects caused by welding. The high temperature burns the concrete at the junction of the upper pipe pile and the lower pipe pile, thereby reducing the strength of the concrete. In addition, welding has an annealing effect on the material of the prestressed anchorage end plate, thereby reducing the mechanical properties of the steel, resulting in the resistance of the pipe pile in the weak foundation. Compressive, bending, and pulling properties are affected to a certain extent, and it is difficult to meet the technical requirements of current engineering construction

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