Device for positioning and mounting whole section of reinforcing steel bar of bridge tower of cable-stayed bridge

Abstract

The utility model belongs to the field of cable-stayed bridge hollow tower column structure construction, and particularly relates to a device for positioning and installing a whole section of a cable-stayed bridge tower reinforcing steel bar. The problems of positioning and high-altitude risks during cable-stayed bridge tower reinforcing steel bar installation are solved, the cable-stayed bridge tower reinforcing steel bar installation device comprises a lifting appliance cross beam, the lifting appliance cross beam is hung on a tower crane, the lower side of the lifting appliance cross beam is connected with a plurality of steel wire ropes arranged at intervals, and the lower end of each steel wire rope is connected with a bridge tower main reinforcing steel bar; and the shaping fixture is arranged below the lifting appliance cross beam, is fixed with the plurality of bridge tower main reinforcements and is used for fixing the positions of the plurality of bridge tower main reinforcements. The device is simple and convenient to operate, a worker can quickly master a using method, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of construction of the hollow tower column structure of cable-stayed bridges, and specifically relates to a device for positioning and installing the entire cross-section of the steel bars of the cable-stayed bridge tower. Background Technique

[0002] During the construction of cable-stayed bridges, the installation of steel bars of cable-stayed bridges often needs to be carried out dozens of meters or even hundreds of meters above the ground. The high-altitude operation environment is often affected by natural factors such as wind, rain, and fog, increasing the construction difficulty and safety risks. At the same time, the space of the high-altitude operation platform may be limited, restricting the flexibility of construction equipment and personnel. The installation of steel bars of cable-stayed bridges requires extremely high precision, because any slight deviation may affect the overall structural safety and stability of the bridge. Due to the limitations of the bridge structure, the operation space for steel bar installation is often relatively narrow, bringing inconvenience to construction.

[0003] For the installation of the main steel bars of traditional cable-stayed bridges, the steel bars are often placed on the platform by a tower crane, and more than two to three people are required to install them one by one. This is not only inefficient but also has a high safety risk, and there are also large deviations in positioning, affecting the force of the bridge structure. Summary of the Invention

[0004] The utility model provides a device for positioning and installing the entire cross-section of the steel bars of the cable-stayed bridge tower to solve the problems of positioning and high-altitude risks in the installation of the steel bars of the cable-stayed bridge tower.

[0005] The utility model adopts the following technical solutions: A device for positioning and installing the entire cross-section of the steel bars of the cable-stayed bridge tower, comprising:

[0006] A sling crossbeam, which is suspended on the tower crane. A plurality of spaced steel wires are connected to the lower side of the sling crossbeam, and the lower end of each steel wire is connected to a main tower bar;

[0007] A shaping fixture, which is arranged below the sling crossbeam and fixed to a plurality of main tower bars for fixing the positions of the plurality of main tower bars.

[0008] In some embodiments, two sling suspension points are symmetrically arranged at both ends of the sling crossbeam for connecting with the tower crane.

[0009] In some embodiments, a plurality of lifting rings arranged according to the spacing of the main bars are arranged on the lower side of the sling crossbeam, and the lifting rings are used for connecting with the steel wires.

[0010] In some embodiments, a connecting sleeve is arranged at one end of the steel wire connected to the main tower bar, and the end of the main tower bar is screwed into the connecting sleeve.

[0011] In some embodiments, the shaping fixture includes:

[0012] Two fixed-type fixture crossbars, the two fixed-type fixture crossbars are arranged horizontally, and one of the fixed-type fixture crossbars is above the other fixed-type fixture crossbar;

[0013] Fixed-type fixture diagonal braces, the fixed-type fixture diagonal braces are connected between the upper and lower fixed-type fixture crossbars.

[0014] In some embodiments, crossbar positioning notches are opened on the fixed-type fixture crossbars according to the spacing and size of the steel bars, and the main reinforcement bars of the bridge tower are stuck in the crossbar positioning notches.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] Compared with the traditional root suspension hoisting process of construction workers, the hoisting tool is made of high-strength steel, can withstand the pressure of heavy objects and the impact force during the hoisting process, and ensures the safety and stability during the construction process. The hoisting tool is flexibly designed and can be adjusted according to the size and shape of the tower column steel bars to adapt to different construction requirements. The operation of the hoisting tool is simple and convenient, and workers can quickly master the use method, improving the construction efficiency.

[0017] The utility model successfully overcomes the problems faced by the integral hoisting of the full-section steel bar skeleton of the cable tower, such as large inclination angle, difficult determination of the center of gravity, great difficulty in controlling the hoisting attitude, and high requirements for docking accuracy, converts a large amount of high-altitude operations into ground construction, and greatly reduces the safety risk. Brief Description of the Drawings

[0018] Figure 1 It is a diagram of the bridge tower steel bar positioning fixture device;

[0019] Figure 2 It is a schematic diagram of the fixed-type fixture crossbar;

[0020] Figure 3 It is a schematic diagram of the bridge tower steel bar positioning and installation;

[0021] Figure 4 It is a schematic diagram of the integral steel bar hoisting tool device;

[0022] Figure 5 It is Figure 4 Side view;

[0023] Figure 6 It is a schematic diagram of the connection and hoisting of the steel bar and the hoisting tool;

[0024] Figure 7 It is a schematic diagram of the hoisting of the integral cross-section steel bar;

[0025] Figure 8 It is a schematic diagram of the main reinforcement bar positioning stiffening skeleton of the bridge tower;

[0026] Figure 9 It is a schematic diagram of the installation of the main reinforcement bars of the bridge tower;

[0027] In the figure: 1 is the cross bar of the sizing fixture, 2 is the scissors brace of the sizing fixture, 3 is the cross bar positioning notch, 4 is the main reinforcement of the bridge tower, 5 is the hoisting point of the sling, 6 is the sling cross beam, 7 is the lifting ring, 8 is the steel wire rope, 9 is the connecting sleeve, 10 is the tower crane, 11 is the hydraulic climbing formwork operation platform, and 12 is the stiffening skeleton of the bridge tower. Specific embodiments

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] As Figure 6 、 7 shown, a device for positioning and installing the entire cross-section of the steel bars of a cable-stayed bridge tower includes:

[0030] A sling cross beam 6, which is suspended on a tower crane 10. A plurality of steel wire ropes 8 arranged at intervals are connected to the lower side of the sling cross beam 6, and the lower end of each steel wire rope is connected to a main reinforcement 4 of the bridge tower;

[0031] A sizing fixture, which is arranged below the sling cross beam 6 and is fixed to a plurality of main reinforcements 4 of the bridge tower for fixing the positions of the plurality of main reinforcements 4.

[0032] Specifically, the sizing fixture includes:

[0033] Two cross bars 1 of the sizing fixture, which are horizontally arranged, and one cross bar 1 of the sizing fixture is above the other cross bar 1 of the sizing fixture;

[0034] A scissors brace 2 of the sizing fixture, which is connected between the upper and lower cross bars 1 of the sizing fixture.

[0035] Cross bar positioning notches 3 are opened on the cross bar 1 of the sizing fixture according to the spacing and dimensions of the steel bars, and the main reinforcement 4 of the bridge tower is stuck in the cross bar positioning notches 3.

[0036] Two sling lifting points 5 are symmetrically arranged at both ends of the sling cross beam 6 for connecting with the tower crane 10.

[0037] A plurality of lifting rings 7 arranged according to the spacing of the main reinforcements are arranged on the lower side of the sling cross beam 6, and the lifting rings 7 are used for connecting with the steel wire ropes 8.

[0038] One end of the steel wire rope 8 connected to the main reinforcement 4 of the bridge tower is provided with a connecting sleeve 9, and the end of the main reinforcement 4 of the bridge tower is screwed into the connecting sleeve 9.

[0039] First, the operator welds and fixes the crossbar 1 of the fixed-type fixture and the diagonal bracing of the fixed-type fixture according to the diagonal angle of the designed bridge tower. Then, the crossbar positioning notches 3 are opened on the crossbar 1 of the fixed-type fixture according to the spacing and dimensions of the steel bars in the design drawing. Thus, the steel bar positioning fixture device for the bridge tower is completed. On the ground, the operator places the root of the main reinforcement 4 of the bridge tower in the crossbar positioning notches 3, and the upper and lower connection joints are staggered by a certain distance according to the specifications.

[0040] As Figure 4 , Figure 5 shown, for the integral hoisting sling, the sling beam 6 is made of double 25 I-beams. Two sling hanging points 5 are arranged at the upper end of the sling beam 6, and lifting rings 7 are arranged at the lower end according to the spacing of the main reinforcements. The lifting rings 7 are connected to the main reinforcement 4 of the bridge tower by steel wires. Between the steel wire 8 and the main reinforcement 4 of the bridge tower, a mechanical connection sleeve 9 is installed at the end of the steel wire 8, and the end of the main reinforcement 4 is screwed into the connection sleeve 9.

[0041] As Figure 6 shown, the tower crane 10 is connected to the sling beam 6 by steel wires, and the whole is hoisted to the construction section at the top of the cable tower for butt joint installation work.

[0042] As Figure 8 , Figure 9 shown, the operator sits on the hydraulic climbing formwork operation platform 11 on the outside of the cable tower. After the stiffening skeleton 12 of the bridge tower is installed inside the cable tower, the tower crane hoists the steel bars of the whole section through the sling to the connection position. After the personnel operate, the mechanical connection of the main reinforcements can be completed. After the butt joint is completed, the steel bars are fixed on the internal stiffening skeleton of the tower at the upper end, and the fixed-type fixture device is removed. Thus, the installation work of the steel bars of the whole section of the cable-stayed bridge is completed.

[0043] This scheme greatly improves the working efficiency of the vertical connection of steel bars, and shortens the construction time of the steel bar sub-item project of the cable tower from 5 days to 2.5 days.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for positioning and installing the entire cross-section of steel bars of a cable-stayed bridge tower, characterized in that: include: A sling crossbeam (6), the sling crossbeam (6) being suspended on a tower crane (10), a plurality of spaced-apart steel wire ropes (8) being connected to the lower side of the sling crossbeam (6), and a lower end of each steel wire rope being connected to a bridge tower main reinforcement (4); A shaping fixture is provided below the hanger crossbeam (6), the shaping fixture is fixed to the plurality of bridge tower main bars (4), and is used to fix the positions of the plurality of bridge tower main bars (4).

2. The device for positioning and installing the entire cross-section of the steel bars of a cable-stayed bridge tower according to claim 1 is characterized in that: Two sling points (5) are symmetrically arranged at both ends of the sling crossbeam (6) for connection with a tower crane (10).

3. The device for positioning and installing the entire cross-section of the steel bars of a cable-stayed bridge tower according to claim 1 is characterized in that: A plurality of lifting rings (7) arranged according to the spacing between main reinforcement bars are arranged on the lower side of the lifting device crossbeam (6), and the lifting rings (7) are used to be connected to the steel wire rope (8).

4. The device for positioning and installing the entire cross-section of the steel bars of a cable-stayed bridge tower according to claim 1 is characterized in that: One end of the steel wire rope (8) connected to the main reinforcement (4) of the bridge tower is provided with a connecting sleeve (9), and the end of the main reinforcement (4) of the bridge tower is screwed into the connecting sleeve (9).

5. The device for positioning and installing the entire cross-section of the steel bars of a cable-stayed bridge tower according to claim 1 is characterized in that: The shaping fixture comprises: Two shaping fixture cross bars (1), wherein the two shaping fixture cross bars (1) are arranged horizontally, with one shaping fixture cross bar (1) being above the other shaping fixture cross bar (1); A shaping fixture scissors strut (2), wherein the shaping fixture scissors strut (2) is connected between upper and lower shaping fixture cross bars (1).

6. The device for positioning and installing the entire cross-section of the steel bars of a cable-stayed bridge tower according to claim 5 is characterized in that: The cross bar (1) of the shaping fixture is provided with a cross bar positioning notch (3) according to the spacing and size of the steel bars, and the main reinforcement (4) of the bridge tower is clamped in the cross bar positioning notch (3).

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