Steel reinforcement cage for prestressed concrete pipe pile

Abstract

The invention provides a steel reinforcement cage for a prestressed concrete pipe pile, and belongs to the technical field of pipe piles. The steel reinforcement cage comprises column steel bars, a steel wire mesh and binding steel wires, and further comprises four-corner hoop columns; each four-corner hoop column is composed of two right-round hoops of the same specification and two oval hoops of the same specification, wherein the length of the short axis of each oval hoop is equal to the diameter length of the corresponding right-round hoop; every two oval hoops penetrate through each other and then form a cross shape with the short axis as the center axis, hoop strips at the cross positions are bound through the binding steel wires, then every two right-round hoops abut against the hoop strips at the lower end and the upper end of the corresponding crossed oval hoop respectively, the abutting positions are bound through the binding steel wires, and the four-corner hoop columns are formed; and the multiple four-corner hoop columns are stacked layer by layer, then the column steel bars are bound around the four-corner hoop columns, then the steel wire mesh is bound, and the steel reinforcement cage is obtained. The steel reinforcement cage adopting the four-corner hoop columns is compact in structure, the phenomena of stretching, contracting, inclined stacking and sliding cannot happen, and extremely high stability is achieved.

Description

technical field [0001] The invention relates to the technical field of pipe piles, in particular to a reinforcement cage for prestressed concrete pipe piles. Background technique [0002] Modern buildings are getting taller and higher, which puts forward higher requirements on the bearing capacity of the foundation, and the natural foundation can no longer bear the load of buildings very well. Pipe piles are used more and more widely in the construction industry as foundation piles. As a kind of prefabricated pile foundation, concrete pipe piles are widely used in China because of their advantages such as high pile strength, large vertical bearing capacity of a single pile, reliable pile quality, short construction period, low cost per unit bearing capacity, and wide range of design options. widely used outside. [0003] Pipe piles are a combination of prefabricated concrete materials and steel cages, and are divided into prestressed concrete pipe piles and prestressed hig...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above technical problems, the technical solution adopted in the present invention is a reinforcement cage for prestressed concrete pipe piles, including column reinforcement, steel wire mesh and binding steel wire, It is characterized in that it also includes a four-corner hoop column, which is composed of two round hoops of the same specification, two oval hoops of the same specification and six binding steel wires, wherein the oval hoop The length of the minor axis of the oval hoop is equal to the diameter of the perfect circular hoop, and the length of the major axis of the elliptical hoop is not limited, preferably the length of the major axis of the elliptical hoop is equal to 102 of the length of the diameter of the perfect circular hoop %-150%, the best is 106%; the two elliptical hoops pass through each other to form a chain shape, and the two chained elliptical hoops form a cross shape with the short axis as the central axis, and then the two The hoop at the intersection of the cross oval hoop is bound with a binding steel wire, and then a perfect circular hoop is abutted on the hoop at the lower end of the two cross oval hoops, and the two ends are abutted with a binding The steel wires are bound, and then another round hoop is abutted on the hoops at the upper ends of the two crossed oval hoops, and the two ends are bound with binding steel wires to form a square hoop column; The structure of the four-corner hoop column is tight and cannot be loosened, and there will be no expansion, sliding or oblique folding

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