CN-224199896-U - Low-consumable steel bar pipe pile

Abstract

The utility model provides a low-consumption steel bar pipe pile, which comprises an outer concrete protection layer, a composite reinforcing layer and an inner concrete bearing layer which are sequentially arranged from outside to inside, wherein the composite reinforcing layer comprises a spiral continuously-wound steel bar framework, the thickness of the outer concrete protection layer is 40-60% of that of the inner concrete low-consumption steel bar pipe pile, and the outer concrete protection layer and the inner concrete bearing layer form an integral structure through anchoring ribs. According to the low-consumption steel bar pipe pile, the thickness of the outer protective layer is changed, so that the consumption of high-strength concrete is directly reduced, the spiral steel bar framework provides annular constraint force, a three-dimensional reinforcing system is formed by matching with the anchoring ribs, the outer layer is heavy in corrosion prevention, the inner layer is concentrated in bearing force, and materials are saved compared with the traditional homogeneous structure.

Inventors

• HUANG RONGRONG
• WANG ZHIQIANG
• FAN JIAYAN

Assignees

• 浙江正大管桩有限公司

Dates

Publication Date

20260505

Application Date

20250530

Claims (5)

1. 1. The low-consumption steel bar pipe pile is characterized by comprising an outer concrete protection layer, a composite reinforcing layer and an inner concrete bearing layer which are sequentially arranged from outside to inside, wherein the composite reinforcing layer comprises a spiral continuously-wound steel bar framework, the thickness of the outer concrete protection layer is 40-60% of that of the inner concrete low-consumption steel bar pipe pile, and the outer concrete protection layer and the inner concrete bearing layer form an integral structure through anchoring ribs.
2. 2. The low-consumption steel bar pipe pile according to claim 1, wherein the steel bar skeleton consists of main bars and stirrups, the diameter of the main bars is 20-30% larger than that of the stirrups, and the distance between the main bars is 2-3 times that between the stirrups.
3. 3. The low-consumption steel bar pipe pile according to claim 2, wherein the outer concrete protective layer is made of C50-C60 high-strength concrete, and the inner concrete bearing layer is made of C30-C40 common concrete.
4. 4. A low-consumption steel bar pipe pile according to claim 3, wherein the anchoring ribs are distributed in a Y shape, and the tail ends of the anchoring ribs extend to the outer surface of the outer concrete protective layer to form anti-stripping protrusions.
5. 5. The low-consumption steel bar pipe pile according to claim 4, wherein the composite reinforcing layer is internally doped with steel fiber reinforced materials, the length of the steel fiber is 20-30mm, and the doping amount is 1.5-2.5% of the volume of the concrete.

Description

Low-consumable steel bar pipe pile Technical Field The utility model belongs to the technical field of pipe piles, and particularly relates to a low-consumable-material reinforced pipe pile. Background In order to meet the bearing requirement, the traditional reinforced pipe pile adopts a homogeneous concrete structure, and the technical defects that the material cost is high, the dead weight is overlarge because of the adoption of single high-grade concrete and the dense design of reinforcement cages, the outer layer concrete is easy to corrode and crack, frequent maintenance is needed, the material consumption is further increased by the traditional method of thickening a protective layer, and peeling damage is easy to occur between the reinforcement cages and the concrete layer, so that the stability of the whole structure is influenced. Disclosure of utility model The utility model mainly aims to provide a low-consumption steel bar pipe pile, and by arranging a differential concrete layer structure, the outer layer adopts a high-strength thin-wall design to realize an anti-corrosion function, and the inner layer bears main load, so that materials are saved compared with the traditional homogeneous structure. In order to achieve the purpose, the utility model provides a low-consumption steel bar pipe pile, which comprises an outer concrete protection layer, a composite reinforcing layer and an inner concrete bearing layer, wherein the outer concrete protection layer, the composite reinforcing layer and the inner concrete bearing layer are sequentially arranged from outside to inside, the composite reinforcing layer comprises a spiral continuously-wound steel bar framework, the thickness of the outer concrete protection layer is 40-60% of that of the inner concrete low-consumption steel bar pipe pile, and the outer concrete protection layer and the inner concrete bearing layer form an integral structure through anchoring ribs. According to the low-consumption steel bar pipe pile, the thickness of the outer protective layer is changed, so that the consumption of high-strength concrete is directly reduced, the spiral steel bar framework provides annular constraint force, a three-dimensional reinforcing system is formed by matching with the anchoring ribs, the outer layer is heavy in corrosion prevention, the inner layer is concentrated in bearing force, and materials are saved compared with the traditional homogeneous structure. In one possible implementation manner, the reinforcement cage is composed of main reinforcements and stirrups, the diameter of the main reinforcements is 20-30% larger than that of the stirrups, and the distance between the main reinforcements is 2-3 times that between the stirrups. The main reinforcements are 20-30% in diameter and 2-3 times in interval width, the total number of the main reinforcements is reduced, the longitudinal bending resistance is ensured, the stirrups with smaller diameters are densely arranged, and the transverse constraint and shearing resistance of concrete are enhanced. In one possible implementation, the outer concrete protective layer is made of C50-C60 high-strength concrete, and the inner concrete bearing layer is made of C30-C40 common concrete. The dosage of the C30-C40 concrete of the inner layer accounts for 60-70% of the total volume, and the material cost is obviously reduced. In one possible implementation manner, the anchoring ribs are distributed in a Y shape, and the tail ends of the anchoring ribs extend to the outer surface of the outer concrete protective layer to form anti-stripping protrusions. The Y-shaped bifurcation design increases the contact area of the anchoring ribs and improves the bonding strength. In one possible implementation, the composite reinforcement layer is doped with steel fiber reinforcement material, the steel fiber length is 20-30mm, and the doping amount is 1.5-2.5% of the concrete volume. The steel fiber can reduce the dosage of stirrup and improve the impact toughness. Drawings Fig. 1 is a schematic diagram of a low-consumable steel bar pipe pile structure provided by the utility model. Detailed Description The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present a