Normal traffic protection channel for maintenance and reinforcement of multi-tower cable-stayed bridge

Abstract

The utility model relates to a normal traffic protection channel for maintenance and reinforcement of a multi-tower cable-stayed bridge, which comprises suspenders and a skeleton structure of the protection channel, the skeleton structure stands on a half of the multi-tower cable-stayed bridge, a traffic lane is formed in the skeleton structure, and a construction area is arranged on the other half of the multi-tower cable-stayed bridge; the framework structure moves in the length direction of the multi-tower cable-stayed bridge. The upper side of the suspender is connected with the main tower through a hoop, and the lower side of the suspender is connected with the crossbeam. The safety protection channel has the advantages that the framework structure of the protection channel is connected with the main tower through the hanging rods, the supporting and hanging combined type movable safety protection channel technology is adopted, and all assemblies between the safety protection channels are reliably connected, so that normal use and use safety in extreme weather are guaranteed; the installation efficiency of the safety protection channel is effectively improved; by means of rail type overall rapid sliding and longitudinal amplitude movement of the safety channel, rapid movement of the safety channel can be achieved in the longitudinal bridge direction along a longitudinal rail.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, and particularly includes a maintenance and reinforcement normal traffic protection passage for a multi-tower cable-stayed bridge. Background Art

[0002] In recent years, with the development of the economy, the construction of bridge engineering in China has made great progress. There are more and more various operating bridge projects, and the structural construction is more complex and diverse. Some problems that need to be repaired and reinforced have emerged in many built large bridges after years of operation. Especially when repairing and reinforcing a multi-tower cable-stayed bridge, the most important thing is the construction safety of the existing line and the traffic safety. Establishing a safety protection passage is one of the effective methods to ensure the safe passage of the existing road during the maintenance and reinforcement construction of a multi-tower cable-stayed bridge. The reasonable structural layout of the passage and the quality control during the construction process are the control key points in terms of the safety protection passage technology, and the key point construction is the control focus in terms of the safety of the passage erection. At present, the traditional maintenance and reinforcement normal traffic protection passage for a multi-tower cable-stayed bridge has problems such as insufficient safety and flexibility, slow construction speed, the anti-collision device of the guardrail not meeting the requirements, and the safety facilities being set up irregularly. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a maintenance and reinforcement normal traffic protection passage for a multi-tower cable-stayed bridge.

[0004] This maintenance and reinforcement normal traffic protection passage for a multi-tower cable-stayed bridge includes: suspender rods, the skeleton structure of the protection passage. The skeleton structure stands on a half-width multi-tower cable-stayed bridge, and a traffic lane is formed inside the skeleton structure, while the other half-width multi-tower cable-stayed bridge is a construction area; the skeleton structure moves along the length direction of the multi-tower cable-stayed bridge; the upper side of the suspender rod is connected to the main tower through a hoop, and the lower side of the suspender rod is hung and connected to the cross beam.

[0005] Permanent anti-collision guardrails are provided on both sides of the multi-tower cable-stayed bridge. A movable temporary anti-collision guardrail is installed inside the permanent anti-collision guardrail on the construction area side, and the movable temporary anti-collision guardrail moves along the length direction of the multi-tower cable-stayed bridge through a brakeable roller.

[0006] Preferably, the skeleton structure includes: cross beams, support columns and longitudinal beams. The upper side of the suspender rod is connected to the main tower through a hoop, and the lower side of the suspender rod hangs the cross beam. Support columns and longitudinal beams are symmetrically installed on both sides of the cross beam through a column transverse connection device. A protection shed cover is installed on the upper side of the cross beam, a warning sign is installed directly in front of the protection shed cover, a reflective warning film is installed on the outer side of the lower part of the support column, the support column stands on the longitudinal bridge track, and the support column is fixed through a strengthening connecting plate.

[0007] Preferably, it includes: a checkered plate, a bamboo plywood and a three-proof cloth are sequentially installed on the upper part of the cross beam.

[0008] Preferably, the framework structure includes cross beams, support columns and longitudinal beams. The longitudinal beams above the framework structure are connected by transverse strengthening support beams, the transverse strengthening support beams are connected by longitudinal strengthening support beams, the longitudinal beams above and below the framework structure are connected by strengthening support columns, and strengthening diagonal braces are arranged between the strengthening support columns.

[0009] Preferably, lighting pipes and communication pipes are arranged inside the permanent anti-collision guardrail. Brakeable rollers are installed on the lower side of the movable temporary anti-collision guardrail. Anti-collision guardrail lower tracks are arranged on the bridge deck flange plate below the movable temporary anti-collision guardrail. The brakeable rollers are located inside the anti-collision guardrail lower tracks, and flexible pads are filled between the movable temporary anti-collision guardrail and the permanent anti-collision guardrail.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1) The framework structure of the protection passage proposed by the present utility model is connected to the main tower through suspension rods, adopts the support and suspension combined movable safety protection passage technology, and ensures the use safety under normal use and extreme weather through the reliable connection of each component between the safety protection passages, and effectively improves the installation efficiency of the safety protection passage.

[0012] 2) The present utility model adopts the overall rapid sliding longitudinal movement amplitude of the safety passage track type, and can realize the rapid movement of the safety passage along the longitudinal track in the longitudinal bridge direction.

[0013] 3) The framework structure of the protection passage of the present utility model is assembled by light steel modularization, and has functions such as simple structure, effective protection, convenient disassembly and assembly, etc. During the structure construction period, it can ensure construction safety and can be reused.

[0014] 4) The present utility model adopts a movable temporary flexible anti-collision guardrail, which effectively protects the original permanent anti-collision guardrails on both sides of the bridge deck, and avoids problems such as concrete spalling, rust swelling and exposed reinforcement, and vertical cracks that may occur in the permanent anti-collision guardrails during the maintenance and reinforcement of the multi-tower cable-stayed bridge. Description of the Drawings

[0015] Figure 1 is the main bridge bridge type layout drawing of the multi-tower cable-stayed bridge;

[0016] Figure 2 is the structural schematic diagram of the protection passage installed on the left side;

[0017] Figure 3 is the structural schematic diagram of the protection passage installed on the right side;

[0018] Figure 4 is the structural schematic diagram of the framework of the protection passage;

[0019] Figure 5 is the structural schematic diagram of the column transverse connection device;

[0020] Figure 6 It is a schematic diagram of the structure of a movable temporary flexible anti-collision guardrail.

[0021] Explanation of reference numerals: 1 - main tower, 2 - suspender, 3 - protective shed cover, 4 - warning sign, 5 - cross beam, 6 - three-proof cloth, 7 - bamboo plywood, 8 - checkered plate, 9 - transverse connecting device for columns, 10 - construction area, 11 - carriageway, 12 - reflective warning film, 13 - support column, 14 - strengthening connecting plate, 15 - longitudinal track along the bridge, 16 - transverse strengthening support beam, 17 - longitudinal beam, 18 - longitudinal strengthening support beam, 19 - strengthening support column, 20 - strengthening diagonal brace, 21 - permanent anti-collision guardrail, 22 - lighting pipeline, 23 - communication pipeline, 24 - bridge deck flange plate, 25 - anti-collision guardrail lower track, 26 - flexible pad, 27 - movable temporary anti-collision guardrail, 28 - brakeable roller. Specific embodiments

[0022] The following further describes the present utility model in conjunction with embodiments. The description of the following embodiments is only for helping to understand the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

[0023] As an embodiment, as Figures 1 to 6 shown, for the maintenance and reinforcement of this multi-tower cable-stayed bridge and the normal traffic protection passage, the design includes: the overall rapid sliding longitudinal movement amplitude safety protection passage technology of the support and suspension combined track type, the light steel modular assembly safety passage technology, and the lower track separated movable temporary flexible anti-collision guardrail.

[0024] As Figure 2 and Figure 2 shown, the overall rapid sliding longitudinal movement amplitude safety protection passage technology of the support and suspension combined track type: the upper side of the suspender 2 is connected to the main tower 1 through a hoop, the lower side of the suspender 2 hangs the cross beam 5, both sides of the cross beam 5 are symmetrically installed with support columns 13 and longitudinal beams 17 through the transverse connecting device 9 for columns, the upper side of the cross beam 5 is installed with a protective shed cover 3, a warning sign 4 is installed directly in front of the protective shed cover 3, the outer side of the lower part of the support column 13 is installed with a reflective warning film 12, the support column 13 stands on the longitudinal track 15 along the bridge and is strengthened and connected through the strengthening connecting plate 14, the carriageway 11 is inside the safety protection passage, and the other side outside the safety protection passage is the construction area 10.

[0025] For the protective shed cover 3: a checkered plate 8, a bamboo plywood 7, and a three-proof cloth 6 are sequentially installed on the upper part of the cross beam 5.

[0026] As Figure 4 and Figure 5As shown in the figure, the light steel modular assembled safety passage technology: the light steel modules of the cross beam 5, the support column 13 and the longitudinal beam 17 are connected into an integral skeleton through the column transverse connection device 9. The upper longitudinal beams 17 are strengthened and connected through the transverse strengthening support beam 16. A longitudinal strengthening support beam 18 is installed between the upper longitudinal beams 17. The upper longitudinal beam 17 and the lower longitudinal beam 17 are strengthened and connected through the strengthening support column 19. The strengthening support columns 19 are further strengthened and connected by adding the strengthening diagonal brace 20.

[0027] As Figure 6 As shown in the figure, the lower track separated movable temporary flexible anti-collision guardrail: a movable temporary anti-collision guardrail 27 is installed inside the permanent anti-collision guardrail 21 on one side of the construction area 10. The inner side of the permanent anti-collision guardrail 21 is provided with a lighting pipeline 22 and a communication pipeline 23. The lower side of the movable temporary anti-collision guardrail 27 is installed with a brakeable roller 28. The brakeable roller 28 is located in the anti-collision guardrail lower track 25. The anti-collision guardrail lower track 25 is on the bridge deck flange 24. A flexible pad 26 is filled between the movable temporary anti-collision guardrail 27 and the permanent anti-collision guardrail 21.

Claims

1. A multi-tower cable-stayed bridge maintenance and reinforcement normal traffic protection channel, characterized in that: include: The skeleton structure of the suspender and the protective passage is erected on half of the multi-tower cable-stayed bridge. A driving lane is formed inside the skeleton structure, and the other half of the multi-tower cable-stayed bridge is the construction area. The skeleton structure moves along the length direction of the multi-tower cable-stayed bridge. The upper side of the suspender is connected to the main tower through a hoop, and the lower side of the suspender is hung with a connecting beam. Permanent anti-collision guardrails are installed on both sides of the multi-tower cable-stayed bridge. A movable temporary anti-collision guardrail is installed inside the permanent anti-collision guardrail on the construction area side. The movable temporary anti-collision guardrail moves along the length direction of the multi-tower cable-stayed bridge through brakeable rollers.

2. The multi-tower cable-stayed bridge maintenance and reinforcement normal traffic protection channel according to claim 1 is characterized in that: The skeleton structure includes: cross beams, supporting columns and longitudinal beams. The upper side of the hanger is connected to the main tower through a clamp, the cross beam is hung on the lower side of the hanger, and the supporting columns and longitudinal beams are symmetrically installed on both sides of the cross beam through the column transverse connecting device. A protective shed cover is installed on the upper side of the cross beam, a warning sign is installed directly in front of the protective shed cover, a reflective warning film is installed on the outer side of the lower part of the supporting column, the supporting column stands on the longitudinal bridge track, and the supporting column is fixed by a reinforced connecting plate.

3. The multi-tower cable-stayed bridge maintenance and reinforcement normal traffic protection channel according to claim 2 is characterized in that: include: The patterned plate, bamboo plywood and three-proof cloth are installed in sequence on the upper part of the beam.

4. The multi-tower cable-stayed bridge maintenance and reinforcement normal traffic protection channel according to claim 1 is characterized in that: The skeleton structure includes transverse beams, supporting columns and longitudinal beams. The longitudinal beams arranged above the skeleton structure are connected by transverse reinforcing support beams, the transverse reinforcing support beams are connected by longitudinal reinforcing support beams, the longitudinal beams arranged above and below the skeleton structure are connected by reinforcing support columns, and reinforcing diagonal braces are provided between the reinforcing support columns.

5. The multi-tower cable-stayed bridge repair and reinforcement normal traffic protection channel according to claim 1 is characterized in that: Lighting pipes and communication pipes are provided in the permanent anti-collision guardrail, brakeable rollers are installed on the lower side of the movable temporary anti-collision guardrail, a lower track of the anti-collision guardrail is provided on the bridge deck flange plate below the movable temporary anti-collision guardrail, the brakeable rollers are located in the lower track of the anti-collision guardrail, and a flexible pad is filled between the movable temporary anti-collision guardrail and the permanent anti-collision guardrail.

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