An arcuate plate anchoring steel wire rope connection configuration for a wet joint

Abstract

The application relates to a curved-plate anchoring steel wire rope connecting structure for a wet joint and relates to the technical field of bridge engineering. The curved-plate anchoring steel wire rope connecting structure comprises prefabricated concrete bridge deck plates, wet joints, steel wire ropes and left and right curved plates; the prefabricated concrete bridge deck plates are connected through the wet joints, and the wet joints are poured with concrete; the steel wire ropes in the prefabricated concrete bridge deck plates are bound and fixed with transverse steel bars, and are anchored on the transverse steel bars through steel wire rope locks at the middle or end of the prefabricated concrete bridge deck plates; and the steel wire ropes which are suspended from the prefabricated concrete bridge deck plates are anchored and tensioned through the left and right curved plates and supporting rods. The curved-plate anchoring steel wire rope connecting structure has the characteristics of good stress performance, convenient on-site construction, fast construction speed, small environmental influence, strong structural durability and the like, can fully utilize the advantages of the tensile strength of the steel wire ropes, can guarantee the effective transmission of loads between the adjacent prefabricated concrete bridge deck plates, and can improve the durability of the wet joints.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, specifically to an arc-shaped plate anchoring wire rope connection structure for wet joints. Background Technology

[0002] In recent years, precast concrete bridge decks have been increasingly used in bridge engineering due to their advantages such as fast construction speed, high component quality, and minimal environmental impact. Although precast concrete bridge decks can significantly reduce the construction time of the bridge superstructure and minimize the impact on the surrounding environment and traffic, the connection points between precast concrete bridge decks often become the weakest points in the entire structure. Therefore, their mechanical properties and durability directly determine the overall performance and normal use of the bridge superstructure.

[0003] To better transfer shear force and bending moment, the most common connection method for precast concrete bridge decks in engineering is the cast-in-place wet joint with ring-shaped reinforcing bars. This connection method has advantages such as convenient construction and a clear force transmission path. However, in actual projects, due to the inconvenience of on-site assembly and alignment, the phenomenon of reinforcing bars "intersecting" easily occurs. In addition, after a period of use, precast concrete bridge decks often crack at the joint interface, causing corrosion of the internal reinforcing bars, which seriously affects the normal use of the structure.

[0004] How to provide a wire rope connection structure for anchoring curved plates in wet joints has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an arc-shaped plate anchoring wire rope connection structure for wet joints, which solves the problems of inconvenience in traditional rebar lap splicing construction, stress concentration of rebar anchoring wire ropes and easy cracking of joint interfaces. It is suitable for the connection of precast concrete bridge decks with large wet joint widths.

[0006] To achieve the above objectives, the present invention provides a wire rope connection structure for anchoring arc-shaped plates in wet joints, comprising: a precast concrete bridge deck, a wet joint, wire ropes, and arc-shaped plates on the left and right sides; adjacent precast concrete bridge decks are connected by wet joints, and concrete is poured into the wet joints; the wire ropes inside the precast concrete bridge decks are tied and fixed to the transverse reinforcing bars, and are bent and anchored to the transverse reinforcing bars in the middle or end of the precast concrete bridge decks by wire rope locks; the wire ropes extending from the precast concrete bridge decks are anchored and tightened by the arc-shaped plates and struts on the left and right sides.

[0007] Furthermore, the method for anchoring and tightening the wire rope through the arc-shaped plates and struts on both sides is as follows: the arc-shaped plates on both sides are inserted horizontally between the wire ropes extending from the precast concrete bridge deck; struts are set between the arc-shaped plates on both sides to push the arc-shaped plates; the adjacent precast concrete bridge decks achieve the anchoring and tightening of the wire rope by pushing the arc-shaped plates on both sides through the struts.

[0008] Furthermore, the wire ropes are arranged in a ring, and the inner diameter of the wire ropes extending from the precast concrete bridge deck is equal to the outer diameter of the curved plate.

[0009] Furthermore, the precast concrete bridge deck, the curved plates on the left and right sides, and the struts are prepared in the factory. The bending and anchoring of the steel wire ropes are positioned using steel pipes with the same outer diameter of curvature as the curved plates as templates when the concrete bridge deck is precast in the factory, to ensure that the length of the steel wire ropes extending from the precast concrete bridge deck is consistent.

[0010] Furthermore, the curved plate is made of metal, and the appropriate thickness is determined according to the diameter of the steel wire rope to ensure sufficient strength and rigidity; the curved plate has 10cm long grooves at certain intervals to facilitate the on-site installation of the struts and the pouring of concrete in the wet joints.

[0011] Furthermore, part of the wire rope is bent and anchored to the transverse reinforcement in the middle of the precast concrete bridge deck through wire rope locks, and the other part is bent and anchored to the transverse reinforcement at the end of the precast concrete bridge deck through wire rope locks.

[0012] Furthermore, the strut includes a threaded T-shaped rod and a sleeve. The sleeve is fitted onto one end of the T-shaped rod and threadedly connected to it. The length of the strut can be adjusted by rotating the sleeve. A strut is arranged every 2-3 meters along the length of the arc-shaped plate, and the arc-shaped plate is pushed and externally supported before the concrete is poured at the wet joint.

[0013] Furthermore, the diameter of the wire rope is equal to the diameter of the longitudinal reinforcing bars in the precast concrete bridge deck.

[0014] Furthermore, the steps for manufacturing precast concrete bridge deck panels, left and right side curved panels, and struts in the factory are as follows:

[0015] Tie the longitudinal and transverse steel bars inside the precast concrete bridge deck, and fabricate and install the precast concrete bridge deck formwork;

[0016] Hoist a steel pipe with the same outer diameter as the curved plate into place, and adjust the position of the precast concrete bridge deck template and steel pipe to achieve the design target position.

[0017] Arrange steel wire ropes inside the precast concrete bridge deck on both sides, wrap the steel wire ropes around the steel pipes, and lap and fix them with the upper and lower transverse steel bars inside the precast concrete bridge deck. Finally, use steel wire rope locks to anchor and lock the steel wire ropes to the transverse steel bars in the middle or end of the precast concrete bridge deck.

[0018] Check whether the length of the steel wire rope extending from the precast concrete bridge deck is equal to the target design length;

[0019] The concrete used for pouring precast concrete bridge decks;

[0020] After the concrete has cured, the formwork of the precast concrete bridge deck is removed and the steel pipes are taken out.

[0021] Furthermore, the steps for on-site pouring of wet joints in precast concrete bridge decks are as follows:

[0022] The precast concrete bridge deck was hoisted into place, and the overlap length of the steel wire rope in the wet joint area was adjusted to be equal to the target design length. The precast concrete bridge decks on the left and right sides were then fixed.

[0023] Insert curved plates on the left and right sides into the overlapping area of ​​adjacent precast concrete bridge decks;

[0024] Along the length of the arc-shaped plate, a strut is arranged every 2-3 meters. The length of the strut is adjusted so that the wire rope is tightly wrapped around the arc-shaped plate, thus achieving the anchoring and tightening of the wire rope.

[0025] Ordinary concrete or ultra-high performance concrete is poured in the wet joint area.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. This invention provides a curved plate anchoring steel wire rope wet connection structure for wet joints. By inserting curved plates on both sides of the steel wire rope lap area, effective anchoring of the steel wire rope extending from the precast concrete bridge deck is achieved, improving the problem of stress concentration in the steel wire rope caused by steel reinforcement anchoring. Simultaneously, the curved plates supporting the struts can apply initial pretension to the steel wire rope, solving the problem of cracking at the interface between the precast concrete bridge deck and the wet joint, and improving the durability of the bridge superstructure.

[0028] 2. The present invention provides a wet connection structure for arc-shaped plate anchoring steel wire rope for wet joints, which utilizes the easy deformation characteristics of steel wire rope to greatly facilitate the assembly of precast concrete bridge decks on the construction site and significantly shorten the construction period of the bridge superstructure.

[0029] 3. The present invention provides a curved plate anchoring wire rope wet connection structure for wet joints, which is suitable for connecting precast concrete bridge decks with large wet joint widths. The length of the strut can be determined according to the actual wet joint width of the project. It is simple and quick to operate on site, has a wide range of applications, and has good engineering practice value. Attached Figure Description

[0030] Figure 1 This is a side view of a curved plate anchoring wire rope connection structure for wet joints.

[0031] Figure 2 This is a top view of a curved plate anchoring wire rope connection structure used for wet joints.

[0032] Figure 3 This is a top view of the curved panels on the left and right sides.

[0033] Figure 4 This is a side view of the curved plates on the left and right sides.

[0034] Figure 5 This is a top view of the strut.

[0035] Figure 6 This is a side view of the strut.

[0036] Figure 7 This is a schematic diagram of how the strut works.

[0037] Figure 8 This is an AA cross-sectional view of an arc-shaped plate anchoring wire rope connection structure used for wet joints.

[0038] Figure 9 This is an assembly flowchart for an arc-shaped plate anchoring wire rope connection structure used in wet joints.

[0039] In the diagram: 1-Precast concrete bridge deck; 2-Wet joint; 3-Wire rope; 4-Curved plate; 5-Transverse reinforcement; 6-Wire rope lock; 7-Strut; 8-Longitudinal reinforcement; 701-T-shaped bar; 702-Sleeve. Detailed Implementation

[0040] To achieve the above objectives and effects, the technical means and structure adopted by the present invention will be described in detail with reference to the accompanying drawings, focusing on the features and functions of the preferred embodiments of the present invention.

[0041] This invention uses steel wire rope instead of traditional steel bars. It can solve the problem of steel bars "intersecting" by utilizing the flexibility of steel wire rope, and can also apply initial tension to the steel wire rope in advance by external support arc plate. The stress concentration of steel wire rope solves the problem of easy cracking at the joint interface, ensures the effective transfer of load between adjacent precast concrete bridge decks, and improves the durability of the bridge superstructure.

[0042] like Figure 1-9 As shown, the purpose of this invention is to provide a wire rope connection structure for anchoring arc-shaped plates in wet joints, including a precast concrete bridge deck 1, a wet joint 2, a wire rope 3, and arc-shaped plates 4 on the left and right sides; adjacent precast concrete bridge decks 1 are connected by the wet joint 2; ordinary concrete or ultra-high performance concrete is poured into the wet joint 2; the wire rope 3 in the precast concrete bridge deck 1 is tied and fixed to the transverse reinforcing bars 5, and is bent and anchored to the transverse reinforcing bars 5 in the middle or end of the precast concrete bridge deck 1 by wire rope locks 6; the wire rope 3 extending out of the precast concrete bridge deck 1 is anchored and tightened by the arc-shaped plates 4 and the struts 7;

[0043] The structure for anchoring the steel wire ropes on the curved plates is as follows: the curved plates 4 on the left and right sides are horizontally inserted between the steel wire ropes 3 extending from the precast concrete bridge deck 1; the support rods 7 are set between the curved plates 4 on the left and right sides to push the curved plates 4; the adjacent precast concrete bridge deck 1 achieves the anchoring and tightening of the steel wire ropes 3 by pushing the curved plates 4 on the left and right sides through the support rods 7.

[0044] In this embodiment, the wire rope 3 is arranged in a ring, which makes full use of the easy deformation of the wire rope 3 and helps to speed up the construction. The arc plate 4 and the strut 7 have a restraining effect on the wire rope 3 that extends out of the precast concrete bridge deck 1, ensuring the uniformity of the force on the wire rope 3 and avoiding stress concentration in the wire rope 3.

[0045] In this embodiment, the inner diameter of the steel wire rope 3 extending from the precast concrete bridge deck 1 should be equal to the outer diameter of the arc plate 4.

[0046] In this embodiment, the precast concrete bridge deck 1, the arc plates 4 on the left and right sides, and the struts 7 are prepared in the factory. The bending and anchoring of the steel wire rope 3 should be positioned using a steel pipe with the same bending outer diameter as the arc plate 4 as a template when the precast concrete bridge deck 1 is manufactured in the factory, so as to ensure the consistency of the length of the steel wire rope 3 extending out of the precast concrete bridge deck 1.

[0047] In this embodiment, the arc plate 4 should be made of metal materials such as steel, and the appropriate thickness should be determined according to the diameter of the wire rope 3 to ensure sufficient strength and rigidity; the arc plate 4 has 10cm long grooves at certain intervals to facilitate the on-site installation of the support rod 7 and the pouring of concrete in the wet joint 2.

[0048] In this embodiment, the wire rope 3 can be partially bent and anchored to the transverse reinforcing bar 5 in the middle of the precast concrete bridge deck 1 through the wire rope lock 6, and partially bent and anchored to the transverse reinforcing bar 5 at the end of the precast concrete bridge deck 1 through the wire rope lock 6.

[0049] In this embodiment, the strut 7 consists of a threaded T-shaped rod 701 and a sleeve 702; the length of the strut 7 is adjusted by rotating the sleeve 702; a strut 7 is arranged every 2-3 meters along the length of the arc plate 4, and the arc plate 4 is pushed and externally supported before the concrete is poured at the wet joint 2.

[0050] In this embodiment, the diameter of the wire rope 3 is equal to the diameter of the longitudinal reinforcing bar 8 in the precast concrete bridge deck 1.

[0051] In this embodiment, the steps for manufacturing the precast concrete bridge deck 1, the arc-shaped plates 4 on the left and right sides, and the struts 7 in the factory are as follows:

[0052] Tie the longitudinal steel bars 8 and transverse steel bars 5 inside the precast concrete bridge deck 1, and fabricate and install the template for the precast concrete bridge deck 1;

[0053] Hoist a steel pipe with the same outer diameter as the curved plate 4 into place, and adjust the position of the precast concrete bridge deck 1 template and steel pipe to achieve the design target position.

[0054] Arrange steel wire ropes 3 inside the precast concrete bridge deck 1 on both sides, so that the steel wire ropes 3 are wrapped around the steel pipe and lapped and fixed with the upper and lower transverse steel bars 5 inside the precast concrete bridge deck 1. Finally, use steel wire rope locks 6 to anchor and lock the steel wire ropes 3 to the transverse steel bars 5 in the middle or end of the precast concrete bridge deck 1.

[0055] Check whether the length of the steel wire rope 3 extending from the precast concrete bridge deck 1 is equal to the target design length;

[0056] Pour concrete for the precast concrete bridge deck 1;

[0057] After the concrete curing is completed, the formwork of the precast concrete bridge deck 1 is removed, and the steel pipes are taken out.

[0058] In this embodiment, the method for on-site pouring of the wet joint 2 of the precast concrete bridge deck 1 is as follows:

[0059] The precast concrete bridge deck 1 is hoisted into place, the overlap length of the steel wire rope 3 in the wet joint 2 area is adjusted to be equal to the target design length, and the precast concrete bridge deck 1 on the left and right sides is fixed.

[0060] Insert the left and right curved plates 4 into the overlapping area of ​​the adjacent precast concrete bridge deck 1;

[0061] Along the length of the arc plate 4, a support rod 7 is arranged every 2-3 meters. The length of the support rod 7 is adjusted so that the wire rope 3 tightly hugs the arc plate 4, thereby achieving the anchoring and tightening of the wire rope 3.

[0062] Pour ordinary concrete or ultra-high performance concrete in the wet joint area 2.

[0063] This invention provides a wet connection structure for anchoring steel wire ropes with arc-shaped plates in wet joints. By inserting arc-shaped plates on both sides of the steel wire rope lap area, effective anchoring of the steel wire ropes extending from the precast concrete bridge deck is achieved, improving the problem of stress concentration in the steel wire ropes caused by steel reinforcement anchoring. Simultaneously, the arc-shaped plates supporting the struts can apply initial pretension to the steel wire ropes, solving the problem of cracking at the interface between the precast concrete bridge deck and the wet joint, and improving the durability of the bridge superstructure. Utilizing the easily deformable nature of the steel wire rope, the assembly of precast concrete bridge decks on construction sites is greatly facilitated, significantly shortening the construction period of the bridge superstructure. It is suitable for connecting precast concrete bridge decks with large wet joint widths. The strut length can be determined according to the actual width of the wet joint in the project. Its on-site operation is simple and quick, with a wide range of applications and significant engineering practical value.

[0064] This invention addresses the problems of inconvenience in traditional rebar lap splicing construction, stress concentration in rebar anchoring wire ropes, and easy cracking at the joint interface. This invention offers convenient on-site construction, rapid construction speed, minimal environmental impact, and strong structural durability. It fully utilizes the tensile strength of the wire rope to ensure effective load transfer between adjacent precast concrete bridge decks, thereby improving the durability of wet joints.

[0065] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An arcuate plate anchoring steel wire rope connection configuration for a wet joint, characterized by, The utility model relates to a method for anchoring and tensioning steel wire rope (3) through left and right arc plates (4) and supporting rods (7), and a precast concrete bridge deck slab (1) with wet joints (2) and left and right arc plates (4) and supporting rods (7). The utility model relates to a method for anchoring and tensioning steel wire rope (3) through left and right arc plates (4) and supporting rods (7), and a precast concrete bridge deck slab (1) with wet joints (2) and left and right arc plates (4) and supporting rods (7). The steel wire rope (3) is arranged in a ring shape, and the bending inner diameter of the steel wire rope (3) that protrudes from the precast concrete bridge deck slab (1) is equal to the outer diameter of the arc plate (4).

2. An arcuate plate anchoring steel wire rope connection configuration for a wet joint according to claim 1, characterized in that, The precast concrete bridge deck slab (1), the left and right arc plates (4) and the supporting rods (7) are prepared in a factory, the bending and anchoring of the steel wire rope (3) are positioned by using a steel pipe with the same bending outer diameter as the arc plate (4) as a template when the precast concrete bridge deck slab (1) is prepared in the factory, and the lengths of the steel wire ropes (3) that protrude from the precast concrete bridge deck slab (1) are ensured to be consistent.

3. An arcuate plate anchoring steel wire rope connection configuration for a wet joint according to claim 1, characterized in that, The arc plate (4) is made of a metal material, and the thickness of the arc plate (4) is determined according to the diameter of the steel wire rope (3) to ensure that the arc plate (4) has sufficient strength and rigidity; the arc plate (4) is provided with a groove with a length of 10 cm at every certain interval, which facilitates the on-site installation of the supporting rod (7) and the pouring of the concrete in the wet joint (2).

4. An arcuate plate anchoring steel wire rope connection configuration for a wet joint according to claim 1, characterized in that, Part of the steel wire rope (3) is bent and anchored on the transverse steel bar (5) at the middle of the precast concrete bridge deck slab (1) through the steel wire rope lock buckle (6), and the other part is bent and anchored on the transverse steel bar (5) at the end of the precast concrete bridge deck slab (1) through the steel wire rope lock buckle (6).

5. An arcuate plate anchoring steel wire rope connection configuration for a wet joint according to claim 1, characterized in that, The supporting rod (7) comprises a threaded T-shaped rod (701) and a sleeve (702), the sleeve is sleeved on one end of the T-shaped rod and is threadedly connected with the T-shaped rod; the length of the supporting rod (7) is adjusted by rotating the sleeve (702); one supporting rod (7) is arranged every 2-3 meters along the length direction of the arc plate (4), and the arc plate (4) is pushed out and supported before the wet joint (2) is poured with concrete.

6. An arcuate plate anchoring steel wire rope connection configuration for a wet joint according to claim 1, characterized in that, The diameter of the steel wire rope (3) is equal to the diameter of the longitudinal steel bar (8) in the precast concrete bridge deck slab (1).

7. An arcuate plate anchoring steel wire rope connection configuration for a wet joint according to claim 1, characterized in that, The method steps for preparing the precast concrete bridge deck slab (1), the left and right arc plates (4) and the supporting rods (7) in the factory are as follows:

8. An arcuate plate anchoring steel wire rope connection configuration for a wet joint according to claim 3, characterized in that, The longitudinal steel bar (8) and the transverse steel bar (5) in the precast concrete bridge deck slab (1) are bound, and the template for the precast concrete bridge deck slab (1) is manufactured and installed; ​ Hoist and arc-shaped plate (4) with the same curved outer diameter of steel pipe in place, adjust the precast concrete bridge deck (1) formwork and steel pipe position, so that it reaches the design target position; Arrange the steel wire rope (3) in the precast concrete bridge deck (1) on both sides, so that the steel wire rope (3) is wound around the steel pipe, and is fixed with the upper and lower layer of transverse steel bars (5) in the precast concrete bridge deck (1). Finally, the steel wire rope (3) is anchored and locked in the transverse steel bars (5) at the middle or end of the precast concrete bridge deck (1) by using the steel wire rope lock buckle (6); Check whether the length of the steel wire rope (3) hanging out of the precast concrete bridge deck (1) is equal to the target design length; Pour the concrete of the precast concrete bridge deck (1); After the concrete curing is completed, remove the formwork of the precast concrete bridge deck (1) and remove the steel pipe.

9. An arcuate plate anchoring steel wire rope connection configuration for a wet joint according to claim 6, characterized in that, The method steps of the wet joint (2) of the precast concrete bridge deck (1) construction site pouring are as follows: Hoist the precast concrete bridge deck (1) in place, adjust the overlapping length of the steel wire rope (3) in the wet joint (2) area to equal the target design length, and fix the precast concrete bridge deck (1) on both sides; Insert the arc-shaped plate (4) on both sides in the overlapping area of the adjacent precast concrete bridge deck (1); Along the length direction of the arc-shaped plate (4), arrange a support rod (7) every 2-3 meters, adjust the length of the support rod (7), so that the steel wire rope (3) tightly grips the arc-shaped plate (4), and realize the anchoring tension of the steel wire rope (3); Pour ordinary concrete or ultra-high performance concrete in the wet joint (2) area.

Images