A prefabricated tubular pile column steel support node

By setting micro-expansion concrete core and steel mesh cage inside the precast pipe pile column, and combining it with anchor plate and anchor bar connection, the problem of insufficient bearing capacity and crack resistance of the connection between the engineering pile column and the steel support node is solved, realizing uniform load transfer and improving construction efficiency, and enhancing the reliability and durability of the support system.

CN224591454UActive Publication Date: 2026-08-04HUBEI ZHONGNAN GEOTECHNICAL ENG CO LTD +1
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Patent Information

Application Number
CN202521470359.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-15
Publication Date
2026-08-04
Estimated Expiration
2035-07-15

AI Technical Summary

Technical Problem

In the existing technology, the node connection structure between the engineering pile column and the steel support has shortcomings in terms of bearing capacity, crack resistance and load transfer efficiency. The overall structure of the pile head is weak, and shrinkage cracks are prone to occur after concrete pouring. The load transfer path between the steel support and the column is not clear enough, which affects the reliability and durability of the support system.

Method used

Precast pipe pile columns are used, with micro-expansion concrete core and longitudinal steel reinforcement skeleton and transverse stirrups forming a steel mesh cage. Steel supports are connected by anchor plates and anchor bars to form a uniform load transfer path. Overflow holes are set in the pile head to monitor the pouring height. Precast pipe piles are used in the factory to replace traditional cast-in-place piles, reducing the complexity of on-site construction.

Benefits of technology

It improves the load-bearing capacity and crack resistance of nodes, reduces project costs, increases construction efficiency, ensures uniform load distribution, and enhances the reliability and durability of the support system.

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Abstract

The utility model relates to building technical field discloses a prefabricated pipe pile stand column steel support joint, including prefabricated pipe pile stand column, the pile head is arranged at the top of prefabricated pipe pile stand column, the microexpansion concrete filling core is equipped in prefabricated pipe pile stand column, the microexpansion concrete filling core bottom end is fixedly connected circular thin steel plate through anchor bar, the top end fixedly connected with anchor plate of anchor bar, the pile head is equipped with longitudinal reinforcement framework and transverse stirrup, steel support, steel support sets up on anchor plate, and the groove section steel is connected through the welding of the angle weld of steel support side surface and forms. In the utility model, the longitudinal reinforcement framework and transverse stirrup are arranged in the pile head to form the reinforcement net cage, and the microexpansion concrete filling core is adopted to pour to enhance the bending, shearing strength of pile head, and the connecting structure of anchor bar, anchor plate and circular thin steel plate makes steel support load can be evenly transmitted to prefabricated pipe pile stand column through anchor plate, and the reliable bearing capacity and crack resistance of node are ensured.
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