Flange connecting structure for foundation base piles of overhead transmission line PHC pipe piles and bearing platform

Abstract

The invention provides a precast PHC pipe pile. Constraint steel pipes with inner ribs are integrally preset at the outer periphery of the outer wall of the precast PHC pipe pile. The precast PHC pipepile further comprises anchoring flanges fixedly sleeving the constraint steel pipes with the inner ribs. The invention further provides a flange connecting structure for foundation base piles of overhead transmission line PHC pipe piles and a bearing platform; the precast PHC pipe piles extend into the foundation bearing platform; composite spiral stirrups are arranged at the externals of the extending parts; and the precast PHC pipe piles, the foundation bearing platform, the composite spiral stirrups and bearing platform longitudinal reinforcements are molded by casting in situ. Core concrete is canceled; the construction period is shortened; and the construction cost is reduced.

Description

technical field [0001] The invention belongs to the field of architectural design, and particularly relates to a structure type in which foundation piles of PHC pipe piles of overhead power transmission lines are connected with anchor flanges and caps. The type has the characteristics of simple installation, convenient construction and high bearing capacity. Background technique [0002] With the continuous increase of the structural volume and structural height of industrial and civil buildings (including structures), the load on the foundation is also greatly increased, which puts forward higher requirements for the structural reliability of the foundation connection nodes. PHC pipe pile foundation has significant advantages such as good pile quality, less environmental pollution, fast construction speed, and high degree of mechanization. It has been widely used in actual engineering, and is mainly used to bear vertical downward pressure loads. [0003] For the foundations...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a structure type in which the PHC pipe pile foundation pile of an overhead power transmission line is connected with the cap by the anchor flange, aiming at solving the difficulty in connection construction between the cap and the foundation pile under the uplift load in the above background and the Insufficient reliability, difficulty in controlling the elevation of pile tops during hammering construction, insufficient strength of foundation piles at local positions on the bottom of foundation caps, etc.

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