Prefabricated tubular pile structure suitable for stockyard composite foundation and construction method

Abstract

The invention discloses a prefabricated pipe pile structure suitable for a stockyard composite foundation and a construction method, the prefabricated pipe pile structure comprises an expansion disc and at least one core filling section arranged at the bottom of the expansion disc, the core filling section is a solid pipe section, and the core filling section is embedded into a prefabricated pipe pile by a set distance; and a gap with a set size is reserved between the core filling section and the inner wall of the prefabricated pipe pile. A flexible gap is reserved between the core filling section and the prefabricated pipe pile, so that the expansion disc can generate a little horizontal displacement and a small rotating angle, and then a large amount of horizontal thrust and bending moment are released; therefore, the stress requirement of the pipe pile can be met without concrete pouring on the pipe pile.

Description

technical field [0001] The invention relates to the technical field of stockyard structures, in particular to a prefabricated pipe pile structure and construction method suitable for stockyard composite foundations. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] With the stricter protection of cultivated land and environment, the location conditions of industrial factories are getting worse and worse. Many factories are located in fill and excavation areas. The coal storage areas and raw material storage areas of industrial factories such as power plants and steel mills are mostly placed in areas with better geological conditions. Bad location. In order to save land, ensure the supply of fuel or raw materials, and consider environmental protection requirements, large stockyards have emerged as the times require. It is also required that...

AI Technical Summary

Problems solved by technology

When pipe piles are used, due to the poor horizontal resistance of pipe piles, it is necessary not only to pour the core inside, but also to lengthen the core-fill section and increase the reinforcement of the core-fill section, thereby forming a rigid-connected pile foundation for greater resistance. The bending moment and horizontal force; at this time, most of the ordinary prefabricated pipe piles have insufficient reinforcement, and it is still necessary to increase the reinforcement and make special customization for the factory. Rigid connection pile foundation formed after pipe pile core filling is less used

[0006] In summary, the cast-in-situ pile foundation and the core-filled pipe pile foundation disclosed in the prior art consume a large amount of engineering, and the construction period of cast-in-place concrete is long, and pollution such as mud noise is generated during on-site construction operations, which is not conducive to environmental protection , the pile quality is closely related to the construction level, and it is not easy to control

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