Arch bridge maintenance hoop construction platform

Abstract

The present application relates to a kind of arch bridge maintenance hoop construction platform, including walkway beam, railing, steel plate, hoop fixing device, connecting piece, the walkway beam and railing are arranged in platform upper portion;The top surface of walkway beam is laid steel plate and forms operation platform;Railing is enclosed around operation platform, and forms safety protection;Platform lower portion is provided with hoop fixing device;The hoop fixing device is divided into upper hoop, lower hoop and connecting piece, the upper hoop is installed in arch bridge arch rib top surface;The lower hoop is installed in arch bridge arch rib bottom surface;The upper hoop and lower hoop are wrapped arch rib after being connected by tension bolt, and the pre-tightening force of tension bolt improves the friction of hoop;Connecting piece connects hoop fixing device with platform walkway beam.This construction platform is simple in structure, safety protection measures are complete, can realize the effect of being exempted from removal during line operation, reduces the influence of construction environment, simple operation improves the personal safety guarantee of operating personnel during construction.

Description

TECHNICAL FIELD

[0001] The present application relates to a maintenance construction platform, in particular to an arch bridge maintenance construction platform. BACKGROUND

[0002] In the late 90s and early this century, many tied arch bridges were built on highways and railways. This type of bridge mainly connects the beam and arch through the suspender to form a beam-arch combined system. The suspender is the key force component for transmitting the dynamic load and dead load of the beam to the arch rib.

[0003] After decades of operation, the suspender and anchor head of this type of bridge have different degrees of disease, which seriously threatens the structural safety of the tied arch bridge. Therefore, maintenance and repair work needs to be carried out on the arch bridge. However, due to the influence of power supply lines of some highway bridges or rail transit bridges, the maintenance and repair of the arch bridge is difficult, and a construction operation platform needs to be provided for construction personnel during maintenance to ensure the safety of construction work.

[0004] At present, the common construction operation platforms mainly include climbing vehicles, bridge inspection vehicles and bridge inspection ships. However, when working on the operating line, the above construction platforms cannot better avoid the existing power supply lines, resulting in low construction efficiency and poor safety, and cannot form continuous construction work.

[0005] Therefore, it is necessary to find a construction platform for the maintenance of the arch bridge on the operating line. SUMMARY

[0006] One of the purposes of the present application is to overcome at least one of the deficiencies in the prior art and provide an operating line arch bridge maintenance clamp construction platform.

[0007] To achieve the above purpose, the present application realizes the following technical solutions:

[0008] An arch bridge maintenance clamp construction platform, comprising a walkway beam, a handrail, a steel plate, a clamp fixing device and a connecting piece, wherein the walkway beam and the handrail are arranged on the upper part of the platform; the top surface of the walkway beam is paved with a steel plate to form an operation platform; the handrail surrounds the operation platform to form a safety protection; the clamp fixing device is arranged on the lower part of the platform; the clamp fixing device is divided into an upper clamp, a lower clamp and a connecting piece; the upper clamp is installed on the top surface of the arch rib; the lower clamp is installed on the bottom surface of the arch rib; the upper clamp and the lower clamp are wrapped around the arch rib after being connected by the tension bolt; the pre-tightening force of the tension bolt improves the friction of the clamp; and the connecting piece connects the clamp fixing device and the walkway beam of the platform.

[0009] Further, the upper clamp and the lower clamp are made of a steel plate with a relatively thin thickness and have a certain bending capacity; the bending capacity can cause the upper clamp and the lower clamp to deform after the tightening force of the tension bolt is applied, so that the surfaces of the upper clamp and the lower clamp are better fitted with the surface of the arch rib.

[0010] Furthermore, the fastening force of the tie bolts is adjusted according to the slope of the arch rib at the installation position of the construction platform; the greater the slope, the greater the fastening force.

[0011] Furthermore, the shape and length of the connector are adjusted according to the slope of the arch rib at the construction location to ensure that the construction platform remains level.

[0012] Furthermore, the length of the walkway beam is greater than the spacing between the axes of the arch ribs of the arch bridge; the walkway beam bears its own weight and the construction load during construction.

[0013] Furthermore, the thin steel plates laid on the top surface of the walkway beams are assembled and disassembled in sections to leave space for personnel to work on the arch ribs.

[0014] Furthermore, the walkway beam is equipped with a grounding connector, and after the construction platform is installed, the grounding wire is connected to the bridge grounding pile.

[0015] The beneficial effects of this invention are:

[0016] This invention uses a clamp fixing device to secure the platform to the arch ribs, and connects the left and right arch ribs into a whole through a walkway beam, providing a larger and safer working surface for construction. The connection between the clamp and the walkway beam is height-adjustable, ensuring the walkway beam is horizontal and providing a level working environment for construction. The clamp is secured with tie bolts, firmly gripping the arch ribs and using friction to counteract sliding forces. The tightening force of the tie bolts is set according to the clamp's inclination angle. The scaffold boards laid on the top surface of the walkway beam are spliced ​​and can be partially removed as needed to create a working surface. The construction platform is equipped with a grounding system, connected to the original bridge grounding device through a grounding wire, which can prevent electric shock, electrical conductivity, and other dangers during operation or in thunderstorms.

[0017] The arch bridge maintenance clamp construction platform provided by this invention is a professional platform that can be used for arch bridge inspection and maintenance under the influence of the complex external environment of the current operating line. Compared with the previous maintenance platform, it has the advantages of good applicability, high safety, and no need to be dismantled during line operation. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the invention installed on an arch bridge;

[0019] Figure 2 for Figure 1 3D diagram of the clamp fixing device;

[0020] Figure 3 for Figure 1 Side view of the clamp fixing device. Detailed Implementation

[0021] The embodiments of the present invention are further illustrated below with specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0022] like Figures 1 to 3 As shown, the present invention provides an arch bridge maintenance clamp construction platform, comprising: a walkway beam 1, a railing 3, a steel plate, a clamp fixing device 4, tie bolts, and a grounding system.

[0023] The platform is equipped with a walkway beam 1 and a railing 3 at the top. A steel plate is laid on the top surface of the walkway beam 1 to form an operating platform. The railing 3 encloses the operating platform on all four sides to form a safety protection. A clamp fixing device 4 is installed at the bottom of the platform. The clamp fixing device 4 consists of an upper clamp 4-1, a lower clamp 4-2, and a connector 4-3. The lower clamp 4-2 is connected to the upper clamp 4-1 by tie bolts 4-4. The upper clamp 4-1 is installed on the top surface of the arch rib 2 of the arch bridge. The lower clamp 4-2 is installed on the bottom surface of the arch rib 2 of the arch bridge. After the upper clamp 4-1 and the lower clamp 4-2 are connected by tie bolts 4-4, they wrap around the arch rib 2. The preload of the tie bolts 4-4 increases the friction of the clamp. The connector 4-3 connects the clamp fixing device 4 to the walkway beam 1.

[0024] The upper clamp 4-1 and lower clamp 4-2 are made of thin steel plates and have a certain bending capacity. The bending capacity allows the upper clamp 4-1 and lower clamp 4-2 to deform after the tie bolt 4-4 applies a tightening force, so that the surfaces of the upper clamp 4-1 and lower clamp 4-2 fit well with the surfaces of the arch rib 2.

[0025] The tightening force of tie bolts 4-4 is adjusted according to the slope of arch rib 2 at the installation location of the construction platform; the greater the slope, the greater the tightening force. The shape and length of connectors 4-3 are adjusted according to the slope of arch rib 2 at the construction location to ensure that the construction platform remains level. The length of walkway beam 1 is greater than the axial spacing of arch rib 2 of the arch bridge; the beam bears its own weight and the construction load during construction. The thin steel plate laid on the top surface of walkway beam 1 can be assembled and disassembled in sections to leave space for personnel to work on the arch rib.

[0026] The construction platform is equipped with a grounding system, which is connected to the original bridge grounding device through grounding wire 6. The walkway beam 1 is equipped with grounding connector 5. After the platform is installed, the grounding wire 6 is connected to the beam grounding pile 7 of the arch bridge, which can prevent the construction platform from being dangerous to electric shock or conduction during operation or in thunderstorms.

Claims

1. An arch bridge repair clamp construction platform, characterized by, The utility model relates to a construction platform for arch bridge, which comprises walkway beams, railings, steel plates, hoop fixing devices and connecting pieces, wherein the walkway beams and railings are arranged on the upper part of the platform; the top surface of the walkway beams is paved with steel plates to form an operation platform; the railings enclose the operation platform to form a safety protection; the lower part of the platform is provided with hoop fixing devices; the hoop fixing devices are divided into upper hoops, lower hoops and connecting pieces; the upper hoops are installed on the top surface of the arch ribs of the arch bridge; the lower hoops are installed on the bottom surface of the arch ribs of the arch bridge; the upper hoops and the lower hoops are connected through tension bolts to wrap the arch ribs; the pre-tightening force of the tension bolts improves the friction of the hoops; the connecting pieces connect the hoop fixing devices with the walkway beams of the platform; the upper hoops and the lower hoops are made of thin steel plates and have a certain bending capacity; the bending capacity can make the upper hoops and the lower hoops deform after the tension bolts exert a fastening force, so that the upper hoops and the lower hoops are better attached to the surface of the arch ribs; the fastening force of the tension bolts is adjusted according to the slope of the arch ribs at the installation position of the construction platform; the greater the slope, the greater the fastening force; the length of the walkway beams is greater than the distance between the axial lines of the arch ribs of the arch bridge; the walkway beams bear their own weight and the construction load during construction.

2. The arch bridge repair and access platform of claim 1, wherein: The shape and length of the connecting pieces are adjusted according to the slope of the arch ribs at the construction position to ensure that the construction platform remains horizontal.

3. The arch bridge repair and access platform of claim 1, wherein: The thin steel plates paved on the top surface of the walkway beams are block-mounted and dismounted to leave space for personnel to work on the arch ribs.

4. The arch bridge repair and access platform of claim 1, wherein: The walkway beams are provided with grounding connectors, and the grounding wire is connected to the bridge grounding pile after the installation of the construction platform is completed.

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