Ladder cage hoop type wall connecting piece for high-speed rail bridge construction

Abstract

The utility model provides a ladder cage hoop type wall connecting piece for high-speed railway bridge construction, which comprises a hoop comprising a straight line part and a curve part, the curve part is used for being sleeved outside the arc-shaped end of a bridge pier, and the straight line part is used for connecting the curve part on the two sides; the number of the connecting rods is two, one ends of the two connecting rods are connected with the hoop, and the other ends of the two connecting rods are connected with stand columns of the elevator cage; and the shear brace is connected between the two connecting rods. According to the utility model, through the hoop type connection, the damage to the quality and appearance of the pier body can be completely eradicated, and the fixed connection does not need to be realized by virtue of a counter-pulling hole.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a ladder cage hoop type wall connecting piece for high-speed railway bridge construction. Background Art

[0002] As domestic high-speed railway construction progresses gradually, train speeds continue to increase, and the proportion of railway bridges in the lines is increasing. This is especially true in the construction of high-speed railways in mountainous areas such as Yunnan, Guizhou, and Sichuan. High-pier bridges are emerging one after another, and the construction of pier bodies, beams, and bridge decks all require climbing operations. Ladder cages, as indispensable climbing tools, are widely used in high-speed railway bridge construction sites. The stability of their wall connections is crucial to the safety of travelers.

[0003] The ladder cages currently sold on the market are mainly based on the main structure of the ladder cage, and the matching wall connections are ignored. In addition, the purchasing personnel do not pay enough attention to the wall connections, resulting in the ladder cages at the lower part of the construction site having no wall connections and being fixed closely to the column foot bolts. When encountering strong winds or excessive personnel overload, the overall stability of the ladder cage cannot be guaranteed, posing a major safety hazard.

[0004] The ladder cage arrived at the construction site without its accompanying wall ties. Workers used existing rebar, channel steel, and steel pipes, welding one end to the cage columns and securing the other end to the pier. On one side of the cage, the connecting rods between cage floors were thick, making welding relatively stable. However, the remaining vertical rods were thinner and not designed to withstand horizontal forces, posing a safety risk if welded there. On the pier side, if embedded parts were present, welding was used; otherwise, simple fixing was performed using template holes. Furthermore, the wall ties were installed at excessively large intervals and in arbitrary locations, lacking any theoretical basis.

[0005] With increasingly stringent quality requirements for high-speed railway bridge piers, several lines have proposed that embedded steel plates are not permitted within the piers. This corrosion significantly impacts the pier's quality and appearance, and also renders the aforementioned ladder cage wall ties impossible to weld to the pier side, rendering them ineffective as supports. Furthermore, in recent years, some high-speed railway lines have mandated that pier formwork not be constructed using a tensioning system, but rather employing external trusses to ensure strength. This means that no tensioning holes are required within the piers. This lack of tensioning holes further complicates the installation and securing of the ladder cage wall ties.

[0006] Therefore, a technical solution for wall ties that has no impact on the pier body is of great significance. Utility Model Content

[0007] In order to solve the above technical problems, the utility model proposes a ladder cage hoop type wall connection member for high-speed railway bridge construction.

[0008] The technical solution of the present utility model is achieved as follows:

[0009] A ladder-cage hoop-type wall connection member for high-speed railway bridge construction, comprising:

[0010] The hoop comprises a straight portion and a curved portion, wherein the curved portion is used to be sleeved on the outside of the arc-shaped end of the pier, and the straight portion is used to connect the curved portions on both sides;

[0011] Two connecting rods are provided, one end of each of the two connecting rods is connected to the hoop, and the other end is connected to the column of the ladder cage;

[0012] A shear brace is connected between the two connecting rods.

[0013] Furthermore, a first node plate is provided at both ends of the straight portion, and a second node plate is provided at both ends of the curved portion, and the first node plate and the second node plate are connected by bolts.

[0014] Furthermore, two parallel-distributed clamp interfaces are provided on the curved portion, and one end of the connecting rod is fixed in the clamp interface.

[0015] Furthermore, a three-way interface is fixed to one end of the connecting rod away from the clamp, and the upper and lower interfaces of the three-way interface are respectively used to connect the upper and lower columns of the elevator cage.

[0016] Furthermore, the four ends of the shear brace are all sleeved with rod sleeves, and the rod sleeves are fixed on the outside of the connecting rod.

[0017] Furthermore, the curved portion includes an arc-shaped first portion and a straight-line second portion, the first node plate is arranged at an end of the second portion away from the first portion, and a top screw is threadedly installed on the second portion.

[0018] Furthermore, an arc-shaped support plate is fixed between the outer side surfaces on both sides of the curved portion.

[0019] Furthermore, the first gusset plate and the second gusset plate are arranged in an "L"-shaped structure, and the second gusset plate can be buckled on the top of the first gusset plate from top to bottom.

[0020] The utility model has the following beneficial effects:

[0021] 1. The ladder cage hoop-type wall connection member for high-speed railway bridge construction of the present application can completely prevent damage to the quality and appearance of the pier body through the hoop-type connection. It does not require the use of tension holes for fixed connection and is only fixed by the friction between the hoop and the pier body.

[0022] 2. The ladder cage hoop-type wall connection parts used in the high-speed railway bridge construction of this application can reduce on-site welding and achieve full bolt connection by setting the first node plate, the second node plate, the hoop interface, the three-way interface and the rod sleeve, which is convenient for turnover, does not damage the main structure of the ladder cage, and eliminates safety hazards.

[0023] 3. The ladder cage hoop-type wall connection parts for high-speed railway bridge construction in this application can be produced in the factory at the same time as the ladder cage, with uniform color and structure, which can eliminate random welding and connection at non-node positions and improve the standardization management level of the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the first embodiment of the present invention;

[0025] Figure 2 This is a schematic structural diagram of the second embodiment of the present utility model;

[0026] Figure 3 This utility model Figure 2 Enlarged view of part A in .

[0027] In the figure: 1. Clamp; 1.1. Straight part; 1.2. Curved part; 2. Connecting rod; 3. Shear brace; 4. First node plate; 5. Second node plate; 6. Clamp interface; 7. Tee interface; 8. Rod sleeve; 9. Top screw; 10. Arc support plate. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figure 1 As shown, embodiment 1 of the present invention provides a ladder cage hoop 1 type wall connection member for high-speed railway bridge construction, including a hoop 1, a connecting rod 2 and a shear brace 3.

[0030] The clamp 1 is designed to fit over the exterior of a bridge pier. It comprises a straight portion 1.1 and a curved portion 1.2. The curved portion 1.2 is designed to fit over the curved end of the pier, corresponding to the arc of the pier. The support portion connects the curved portions 1.2 on both sides of the pier. Two connecting rods 2 are provided, one end of which is connected to the clamp 1 and the other end to the column of the cage. A shear brace 3 is connected between the two connecting rods 2.

[0031] In this embodiment, the wall connection member installs the ladder cage on the outside of the bridge pier in a clamp 1 connection manner, which can completely prevent damage to the quality and appearance of the pier body. It does not require the use of tension holes for fixed connection, and is only fixed by the friction between the clamp 1 and the pier body.

[0032] On this basis, first node plates 4 are provided at both ends of the straight portion 1.1, and second node plates 5 are provided at both ends of the curved portion 1.2. The first node plates 4 and the second node plates 5 are connected by bolts to achieve the connection and fixation between the straight portion 1.1 and the curved portion 1.2.

[0033] The curved portion 1.2 is provided with two parallel clamp interfaces 6, and one end of the connecting rod 2 is fixed in the clamp interface 6. Specifically, the clamp interface 6 is a square tube, one end of the connecting rod 2 is inserted into the clamp interface 6, and a bolt is provided to connect the clamp interface 6 to the end of the connecting rod 2.

[0034] A three-way interface 7 is fixed to the end of the connecting rod 2 away from the clamp 1. The two upper and lower interfaces of the three-way interface 7 are respectively used to connect the upper and lower columns of the ladder cage. Specifically, the bottom end of the upper column of the upper and lower columns of the ladder cage is inserted into the top interface of the three-way interface 7, and the top end of the lower column is inserted into the bottom interface of the three-way interface 7. Furthermore, the three-way interface 7 is used as a connecting piece for the columns when assembling the ladder cage, and one end of the connecting rod 2 is inserted into the horizontal interface of the three-way interface 7, and then the connecting rod 2 and the three-way interface 7 are connected with bolts. The three-way structure makes the ladder cage and the clamp 1-type wall connecting piece form a relatively fixed whole, which has higher stability.

[0035] The four ends of the shear brace 3 are all sleeved with rod sleeves 8, and the rod sleeves 8 are fixed to the outside of the connecting rod 2. Specifically, the rod sleeves 8 can be directly welded to the ends of the shear brace 3. During the installation process, the connecting rod 2 is sequentially passed through the two rod sleeves 8 on the same side of the shear brace 3, and then the rod sleeves 8 are fixed to the connecting rod 2 with bolts.

[0036] In the second embodiment, Figure 2 and Figure 3 As shown, the curved portion 1.2 includes an arc-shaped first portion and a straight second portion. The first gusset plate 4 is arranged at one end of the second portion away from the first portion, and a top screw 9 is threadedly installed on the second portion.

[0037] Specifically, during installation, after the curved portion 1.2 is placed over the arc section of the pier, the top screw 9 is rotated to press against the pier surface, pre-fixing the curved portion 1.2 to the pier or improving its stability. The straight portion 1.1 is then installed. This arrangement further facilitates the installation of the clamp 1.

[0038] An arc-shaped support plate 10 is fixed between the outer side surfaces of the curved portion 1.2. The arc-shaped support plate 10 can improve the strength and stability of the curved portion 1.2, especially after the top screw 9 is rotated, it can prevent the curved portion 1.2 from being compressed and deformed.

[0039] The first and second gusset plates 4, 5 are arranged in an L-shaped structure, with the second gusset plate 5 being able to buckle onto the top of the first gusset plate 4 from top to bottom. When installing the straight section 1.1, the two ends of the straight section 1.1 are first overlapped on the curved sections 1.2 on either side. The restraining effect between the first and second gusset plates 4, 5, ensures the stability of the straight section 1.1, preventing it from falling and facilitating installation.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ladder cage hoop type wall connection member for high-speed railway bridge construction, characterized in that: include: A hoop (1) comprising a straight portion (1.1) and a curved portion (1.2), wherein the curved portion (1.2) is used to be sleeved on the outside of the arc-shaped end of the pier, and the straight portion (1.1) is used to connect the curved portions (1.2) on both sides; Two connecting rods (2) are provided, one end of each of the two connecting rods (2) is connected to the hoop (1), and the other end is connected to a column of the ladder cage; A shear brace (3) is connected between the two connecting rods (2).

2. The ladder cage hoop type wall connecting member for high-speed railway bridge construction according to claim 1, characterized in that: Both ends of the straight portion (1.1) are provided with a first node plate (4), and both ends of the curved portion (1.2) are provided with a second node plate (5), and the first node plate (4) and the second node plate (5) are connected by bolts.

3. The ladder cage hoop type wall connecting member for high-speed railway bridge construction according to claim 1, characterized in that: Two parallel-distributed clamp interfaces (6) are provided on the curved portion (1.2), and one end of the connecting rod (2) is fixed in the clamp interface (6).

4. The ladder cage hoop type wall connecting member for high-speed railway bridge construction according to claim 1, characterized in that: A three-way interface (7) is fixed to one end of the connecting rod (2) away from the hoop (1), and the upper and lower interfaces of the three-way interface (7) are respectively used to connect the upper and lower columns of the elevator cage.

5. The ladder cage hoop type wall connecting member for high-speed railway bridge construction according to claim 1, characterized in that: The four ends of the shear brace (3) are all sleeved with rod sleeves (8), and the rod sleeves (8) are fixed on the outside of the connecting rod (2).

6. The ladder cage hoop type wall connecting member for high-speed railway bridge construction according to claim 2, characterized in that: The curved portion (1.2) comprises an arc-shaped first portion and a straight-line second portion, the first node plate (4) is arranged at an end of the second portion away from the first portion, and a top screw (9) is threadedly mounted on the second portion.

7. The ladder cage hoop type wall connecting member for high-speed railway bridge construction according to claim 6, characterized in that: An arc-shaped support plate (10) is fixed between the outer side surfaces on both sides of the curved portion (1.2).

8. A ladder-cage hoop-type wall connection member for high-speed railway bridge construction according to claim 2 or 6, characterized in that: The first node plate (4) and the second node plate (5) are arranged in an "L"-shaped structure, and the second node plate (5) can be buckled on the top of the first node plate (4) from top to bottom.

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