CN217710741U

CN217710741U - Be used for excavation supporting mixed steel reinforcement cage structure

Info

Publication number: CN217710741U
Application number: CN202221171493.1U
Authority: CN
Inventors: 张朝黎; 苏俊; 秦伟兵; 汪奇伟; 庞贵东
Original assignee: Chongqing Liyao Construction Engineering Co ltd
Current assignee: Chongqing Liyao Construction Engineering Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-11-01
Anticipated expiration: 2032-05-16

Abstract

The utility model relates to a be used for excavation supporting to mix steel reinforcement cage structure, including the steel reinforcement cage main part, its characterized in that: the steel reinforcement cage main body comprises a plurality of erection ribs, the erection ribs are annularly arranged at equal intervals to form a cylindrical structure, the erection ribs are GFRP ribs, and basalt fiber bundles are wound on the outer wall of the erection ribs; the inner wall of the cylindrical structure is provided with a plurality of inner stirrups, and the outer wall of the cylindrical structure is provided with outer stirrups. The utility model relates to a novelty compares with traditional steel reinforcement cage structure, adopts bilayer structure to form and has increased steel reinforcement cage structural strength, has improved bending resistance, adopts GFRP muscle preparation simultaneously, has increased corrosion resistance, characteristics such as bulk strength height, light in weight, antifatigue and insulating nature are good.

Description

Be used for excavation supporting mixed steel reinforcement cage structure

Technical Field

The utility model belongs to the technical field of the excavation supporting, concretely relates to be used for excavation supporting to mix steel reinforcement cage structure.

Background

The foundation pit supporting engineering must be executed according to the stipulation of 'safety management method of project of partial item with large risk' (article No. 2009-87 of architecture). For example: excavation depth exceeds 3 meters (including 3 meters) or excavation depth does not exceed 3 meters but foundation pit (groove) support with complex geological conditions and surrounding environment belongs to a partial project range with high risk. Excavation depth is more than 5 meters (including 5 meters) or not more than 5 meters, but geological conditions, surrounding environment and underground pipelines are complex, or foundation pit supporting engineering which influences the safety of adjacent buildings is achieved.

A large number of cast-in-situ bored piles are used in foundation pit enclosure and slope support engineering, pile-shaped sections of the cast-in-situ bored piles in the prior art are all circular, and related reinforcement cages are mostly circular, namely circular cast-in-situ bored piles.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior art problem, the utility model provides a be used for excavation supporting mixed steel reinforcement cage structure can improve more than not enough.

The utility model relates to a be used for excavation supporting mixed steel reinforcement cage structure, including the steel reinforcement cage main part, the steel reinforcement cage main part includes a plurality of vertical bars, vertical bar hoop equidistant setting forms the tubular structure, vertical bar is the GFRP muscle, and its outer wall twines basalt fiber bundle, and its fixed mode is that resin (3) coheres compound, and GFRP muscle's characteristics its corrosion resistance is strong, and easy cutting does benefit to processing, and tensile strength is good simultaneously, for example the diameter is less than 16mm, and tensile strength standard value detected value of its tensile strength is greater than or equal to 650MPa, its 600MPa, and the diameter is greater than or equal to 660MPa at 16mm ~ 25 mm's tensile strength detected value, and its 550MPa all is superior to the standard value; the basalt fiber bundle is a single basalt fiber filament or a plurality of basalt fiber filaments with the diameter of 4 mm-10 mm, the elastic modulus of the erection reinforcement can be improved, the inner wall of the cylindrical structure is provided with a plurality of inner stirrups, the outer wall of the cylindrical structure is provided with a plurality of outer stirrups, a double-layer structure is adopted, a 'jacket layer' structure is formed, and the integral bending resistance is improved.

Furthermore, a cross tie bar is arranged between the inner walls of the tubular structures, and the problem of force transmission inside the steel cage is solved through tensioning.

Furthermore, two ends of the tie bar are welded and fixed with the frame vertical bar.

Considering the convenience of lowering the cage, the device is beneficial to allocation and transportation, the inner stirrup at one side of the end surface of the tubular structure is provided with a lifting piece, the lifting piece is designed into a U-shaped structure, and the two ends of the lifting piece are welded and fixed

Furthermore, the lifting piece and the frame vertical rib form an included angle of 45-60 degrees.

Further, the inner stirrup and the outer stirrup are GFRP ribs.

Furthermore, two ends of the vertical ribs incline outwards.

The utility model relates to a novelty compares with traditional steel reinforcement cage structure, adopts bilayer structure to form and has increased steel reinforcement cage structural strength, has improved bending resistance, adopts GFRP muscle preparation simultaneously, has increased corrosion resistance, characteristics such as bulk strength height, light in weight, antifatigue and insulating nature are good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a frame stud structure.

The figure is as follows: 1 vertical rib, 2 external stirrups, 3 internal stirrups, 4 lacing wires, 5 lifting pieces and 6 basalt fiber bundles.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 and 2, the utility model relates to a be used for excavation supporting mixed reinforcement cage structure, package reinforcement cage main part, the reinforcement cage main part includes 14 ~ 20 frame muscle 1, it forms tubular structure to set up equidistant setting of muscle hoop, it is the GFRP muscle to set up the muscle, (glass-fiber-reinforced plastic bar, glass fiber bar) is a novel organic composite, compares with ordinary reinforcing bar, and it has that the quality is light, tensile strength is high, the quiet shearing force is very high but move shearing force lower, corrosion resistance is strong, elasticity modulus low grade a great deal of advantage. The basalt fiber bundle 6 and GFRP rib is wound and fixed on the outer wall of the steel wire rope, so that the steel wire rope has the characteristics of strong corrosion resistance, easy cutting and favorable processing, and has good tensile property, for example, the diameter is less than 16mm, the tensile strength detection value is more than or equal to 650MPa, the standard value is 600MPa, the tensile strength detection value with the diameter of 16 mm-25 mm is more than or equal to 660MPa, and the standard value is 550MPa, which is better than the standard value; in order to increase the number of basalt fiber bundles, the basalt fiber bundles are single basalt fiber filaments or a plurality of basalt fiber filaments with the diameter of 4 mm-10 mm, the elastic modulus of the erection bars can be improved, the inner wall of the cylindrical structure is provided with a plurality of inner stirrups 3, the outer wall of the cylindrical structure is provided with a plurality of outer stirrups 2, a double-layer structure is adopted, a 'jacket layer' structure is formed, and the bending resistance of the whole structure is increased.

As a technical improvement, cross tie bars 4 are arranged between the inner walls of the cylindrical structures, and the problem of force transmission inside the steel cage is solved through tensioning.

As a technical improvement, two ends of the tie bar are welded and fixed with the frame bar, in order to increase the connection stability, a U-shaped elbow can be arranged at the end position of the tie bar, the elbow hooks the outer wall of the frame bar, and then the welding is carried out.

Considering the convenient problem of lowering the cage, being beneficial to allocation and transportation, the inner stirrup on one side of the end surface of the tubular structure is provided with a lifting piece 5 which is designed into a U-shaped structure, and the two ends of the lifting piece are welded and fixed

As a technical improvement, the lifting piece and the frame vertical rib 1 form an included angle of 45-60 degrees.

As a technical improvement, the inner stirrups 3 and the outer stirrups 2 are GFRP ribs, the diameter of which is smaller than that of the erection ribs.

In order to increase the area of the end position, the two ends of the vertical ribs are inclined outwards, and the angle is generally between 20 and 30 degrees.

The hybrid reinforcement cage structure in this scheme adopts bilayer structure, has increased bending resistance, and is special, erects muscle, outer stirrup and interior stirrup and adopts the GFRP muscle as the skeleton, and it has the quality light, tensile strength is high, the quiet shearing force is very high but dynamic shearing force is lower, corrosion resistance is strong, elasticity modulus low grade a great deal of advantage.

Claims

1. The utility model provides a be used for excavation supporting to mix steel reinforcement cage structure, includes the steel reinforcement cage main part, its characterized in that: the steel reinforcement cage main body comprises a plurality of erection ribs, the erection ribs are annularly arranged at equal intervals to form a cylindrical structure, the erection ribs are GFRP ribs, and basalt fiber bundles are fixedly wound on the outer wall of the erection ribs; the inner wall of the cylindrical structure is provided with a plurality of inner stirrups, and the outer wall of the cylindrical structure is provided with a plurality of outer stirrups.

2. The hybrid reinforcement cage structure for foundation pit support of claim 1, wherein: and cross lacing wires are arranged between the inner walls of the cylindrical structures.

3. The hybrid reinforcement cage structure for foundation pit support of claim 2, wherein: and two ends of the lacing wire are welded and fixed with the frame vertical rib.

4. The hybrid reinforcement cage structure for foundation pit support of claim 1, wherein: and the inner stirrup on one side of the end face of the cylindrical structure is provided with a pulling piece.

5. The hybrid reinforcement cage structure for foundation pit support according to claim 4, wherein: the lifting piece and the frame vertical rib form an included angle of 45-60 degrees.

6. The hybrid reinforcement cage structure for foundation pit support of claim 1, wherein: the inner stirrup and the outer stirrup are GFRP ribs.

7. The hybrid reinforcement cage structure for foundation pit support of claim 1, wherein: the two ends of the vertical ribs are inclined outwards.