Construction method for decoration and maintenance of viaduct concrete protective barrier

Abstract

The invention specifically discloses a construction method for decoration and maintenance of a viaduct concrete protective barrier, which comprises the following steps of: 1, manufacturing and installing a movable operation platform, welding universal wheels at the bottom of the movable operation platform, and welding lug plates on two sides of the middle part of the movable operation platform; secondly, a detachable safety fence is manufactured, and the detachable safety fence is installed and fixed to the movable operation platform; thirdly, the movable operation platform and the detachable safety guardrail are connected to the viaduct concrete protective handrail in a lap joint mode; fourthly, pulleys are fixedly installed at the two ends of the viaduct concrete protective handrail, the two pulleys are connected through a steel wire rope, and the steel wire rope penetrates through lug plates on the two sides of the movable operation platform; and fifthly, workers stand on the movable operation platform for construction and can move left and right through traction of the steel wire rope, and construction and overhaul are conducted on different positions of the viaduct concrete protective barrier. The device is simple in structure and convenient to use, and assembling and using can be completed by one person.

Description

Technical Field

[0001] The invention relates to the technical field of construction equipment, and in particular to a construction method for decoration and maintenance of concrete guardrails of an elevated bridge. Background Art

[0002] As the pressure of domestic traffic operation continues to increase, more and more viaducts are being built. The construction area of ​​viaducts has also shifted from the original central area to remote areas, and the working environment has become more and more complex. Among them, the decoration and maintenance of the viaduct concrete guardrails are the key tasks of the viaduct. The traditional decoration and maintenance method is to use lifting equipment to set up a hanging basket for direct construction. When the decoration and maintenance of the viaduct concrete guardrails are under complex conditions or do not have the conditions for conventional lifting machinery operations, how to work at high altitudes and ensure that the construction is economical, reasonable, simple, fast and efficient is the most difficult problem we need to solve at present. Summary of the invention

[0003] In order to improve the problem that conventional lifting machinery cannot be used under complex conditions, the present invention provides a construction method for decoration and maintenance of concrete guardrails of viaducts.

[0004] The invention provides a construction method for decoration and maintenance of viaduct concrete guardrails using the following technical solutions: The construction method for decoration and maintenance of viaduct concrete guardrails includes the following steps: Step 1: Make and install a movable working platform, weld universal wheels at the bottom of the movable working platform, and weld ear plates on both sides of the middle of the movable working platform; Step 2: Make a detachable safety guardrail and install and fix the detachable safety guardrail on the movable working platform; Step 3: Overlap the movable working platform and the detachable safety guardrail on the concrete guardrail of the viaduct; Step 4: Fix pulleys at both ends of the concrete guardrail of the viaduct, connect the two pulleys with a steel wire rope, and pass the steel wire rope through the ear plates on both sides of the movable working platform; Step 5: Workers stand on a movable work platform to carry out construction. They can move left and right through the traction of steel wire ropes to carry out construction and maintenance on different positions of the viaduct concrete guardrails.

[0005] Furthermore, the bottom of the movable working platform is a stepped platform, and the top is fixedly connected to a U-shaped platform overlapped with the concrete guardrail of the viaduct.

[0006] Furthermore, the detachable safety guardrail is arranged on the periphery of the movable working platform to improve construction safety.

[0007] Furthermore, the detachable safety guardrail is foldable.

[0008] Furthermore, each section of the detachable safety guardrail is connected by a chain.

[0009] Furthermore, the detachable safety guardrail is fixed to the movable working platform by bolts.

[0010] Furthermore, the step five also includes setting a safety hook and a safety belt on the inner side of the viaduct concrete guardrail.

[0011] Furthermore, the movable working platform is provided with an electric traction device, and the movable working platform can be manipulated to move by a handle.

[0012] Furthermore, a horizontal limiter is arranged on the steel wire rope near the two pulleys.

[0013] Furthermore, in the step 1, movable working platforms of different heights and widths can be adjusted and manufactured according to the elevated bridge concrete guardrails of different cross-sectional heights.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The present invention is a construction method for rapid decoration and maintenance of viaduct concrete guardrails under complex conditions. The structure is simple and convenient. One person can complete the assembly and use. It is mainly used under conditions where the viaduct deck is narrow, the engineering volume is small, and the traffic operation is not affected. It solves the problems that the viaduct concrete guardrails cannot be constructed using conventional cranes and lifting machinery, the surrounding terrain is complex, the decoration and maintenance working surface is narrow, the construction is dangerous and difficult, the cost is high, and the construction period cannot be guaranteed. It improves the decoration and maintenance efficiency of the viaduct concrete guardrails while reducing the construction cost; 2. The present invention makes full use of the electric traction device at the front and rear ends of the movable working platform as the power, and cooperates with the pulley block and the universal wheel to enable fast and efficient movement at the front and rear ends, thereby solving the problem of slow front and rear movement of the working platform and affecting traffic operation during the construction process, speeding up the construction efficiency and improving the construction progress; 3. The present invention is applicable to the decoration and maintenance of concrete guardrails of elevated bridges of any cross-sectional height. By adjusting the width and height of the movable working platform, the movable working platform can be quickly manufactured and installed. It is applicable to bridges of narrow width or narrow working space. It solves the problem that conventional cranes and lifting machinery cannot be used due to limited construction sites and many surrounding obstacles. 4. The movable working platform, pulley block, wire rope, and detachable guardrail used in the present invention are all reusable, with a light structure and convenient manual transportation. The materials used are easy to purchase and low in cost. All installations are carried out manually, which solves the problem of high cost of general working platforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 is a schematic cross-sectional structural diagram of an embodiment of the present invention; Figure 3 It is a three-dimensional schematic diagram of the movable working platform and the detachable safety guardrail of the present invention.

[0016] Figure numerals: 1. Concrete guardrail of viaduct; 2. Steel wire rope; 3. Horizontal limiter; 4. Pulley; 5. Movable working platform; 6. Universal wheel; 7. Ear plate; 8. Removable safety guardrail; 9. Safety hook; 10. Safety belt. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-3 The present invention is described in further detail.

[0018] The embodiment of the present invention discloses a construction method for decoration and maintenance of a viaduct concrete guardrail. Figure 1 , Figure 2 , Figure 3 The construction method for decoration and maintenance of viaduct concrete guardrails includes the following steps: Step 1: Make and install the movable working platform 5, which is made of galvanized angle steel, weld universal wheels 6 at the bottom of the movable working platform 5, and weld ear plates 7 on both sides of the middle of the movable working platform 5; Step 2: Make a detachable safety guardrail 8 using galvanized angle steel, and install and fix the detachable safety guardrail 8 on the movable working platform 5; Step 3: Overlap the movable working platform 5 and the detachable safety guardrail 8 on the viaduct concrete guardrail 1; Step 4: fixedly install pulleys 4 at both ends of the viaduct concrete guardrail 1, and the two pulleys 4 are connected by a steel wire rope 2, and the steel wire rope 2 passes through the ear plates 7 on both sides of the movable working platform 5; Step 5: Workers stand on the movable work platform 5 to carry out construction. The platform can be moved left and right by being pulled by the steel wire rope 2 to carry out construction and maintenance on different positions of the viaduct concrete guardrail 1.

[0019] Reference Figure 1 , Figure 2 , Figure 3 The bottom of the movable working platform 5 is a stepped platform, and the top is fixedly connected to a U-shaped platform overlapped with the concrete guardrail 1 of the viaduct.

[0020] Reference Figure 2 , Figure 3The detachable safety guardrail 8 is arranged on the periphery of the movable working platform 5, the detachable safety guardrail 8 can be folded, each section of the detachable safety guardrail 8 is connected by a chain, and the detachable safety guardrail 8 is fixed to the movable working platform 5 by bolts. The present invention adopts the detachable safety guardrail 8, which is convenient for installation and removal and provides a safe passage for workers to enter and exit the working platform.

[0021] Reference Figure 1 , Figure 2 , Figure 3 Step 5 also includes setting a safety hook 9 and a safety belt 10 on the inner side of the viaduct concrete guardrail 1. A safety belt 10 fixing device separated from the movable working platform 5 is adopted, and the safety belt 10 is connected to the viaduct concrete guardrail 1 through the safety hook 9, which improves safety protection and solves the problem of high risk factor of high-altitude operation on the viaduct.

[0022] Reference Figure 1 , Figure 2 , Figure 3 The movable working platform 5 is provided with an electric traction device (not shown in the figure), and the movable working platform 5 can be manipulated to move by a handle. The present invention makes full use of the electric traction devices at the front and rear ends of the movable working platform 5 as a power source, and cooperates with the pulley 4 and the universal wheel 6 to enable fast and efficient movement at the front and rear ends, thereby solving the problem of slow front and rear movement and affecting traffic operation during the construction process, speeding up the construction efficiency, and improving the construction progress.

[0023] Reference Figure 1 , Figure 2 , Figure 3 , a horizontal limiter 3 is arranged on the steel wire rope 2 near the two pulleys 4. The present invention arranges horizontal limiter devices at both ends of the viaduct concrete guardrail 1, and when the movable working platform 5 runs to the limit set by the horizontal limiter 3, the power device is automatically powered off, solving the safety problems of manual operation errors and forward and backward movement of the movable working platform 5.

[0024] Reference Figure 1 , Figure 2 , Figure 3 In step 1, according to the elevated concrete guardrails 1 of different cross-sectional heights, movable working platforms 5 of different heights and widths can be adjusted and manufactured. The present invention is applicable to the decoration and maintenance of elevated concrete guardrails 1 of any cross-sectional height. By adjusting the width and height position of the movable working platform 5, the movable working platform 5 can be quickly manufactured and quickly installed. It is applicable to bridge widths and narrow working spaces. It solves the problem that conventional cranes and lifting machinery cannot be used due to limited construction sites and many surrounding obstacles.

[0025] The movable working platform 5, pulley 4, wire rope 2, and detachable guardrail 8 used in the present invention are all reusable, have a light structure, and are convenient for manual transportation. The materials used are easy to purchase and low in cost. All installations are performed manually, which solves the problem of high costs of general working platforms.

[0026] The present invention relates to a construction method for rapid decoration and maintenance of concrete guardrails of viaducts under complex conditions. The method has a simple and convenient structure and can be assembled and used by one person. The method is mainly used under conditions where the viaduct deck is narrow, the engineering volume is small, and traffic operation is not affected. The method solves the problems that the concrete guardrails of viaducts cannot be constructed using conventional cranes and lifting machinery, the surrounding terrain is complex, the decoration and maintenance working surface is narrow, the construction is dangerous and difficult, the cost is high, and the construction period cannot be guaranteed. The method improves the decoration and maintenance efficiency of the concrete guardrails of viaducts while reducing the construction cost.

[0027] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction method for decoration and maintenance of viaduct concrete guardrails, characterized in that: The following steps are involved: Step 1: Make and install a movable working platform, weld universal wheels at the bottom of the movable working platform, and weld ear plates on both sides of the middle of the movable working platform; Step 2: Make a detachable safety guardrail and install and fix the detachable safety guardrail on the movable working platform; Step 3: Overlap the movable working platform and the detachable safety guardrail on the concrete guardrail of the viaduct; Step 4: Fix pulleys at both ends of the concrete guardrail of the viaduct, connect the two pulleys with a steel wire rope, and pass the steel wire rope through the ear plates on both sides of the movable working platform; Step 5: Workers stand on a movable work platform to carry out construction. They can move left and right through the traction of steel wire ropes to carry out construction and maintenance on different positions of the viaduct concrete guardrails.

2. The construction method for decoration and maintenance of a viaduct concrete guardrail according to claim 1 is characterized in that: The bottom of the movable working platform is a stepped platform, and the top is fixedly connected with a U-shaped platform overlapped with the concrete guardrail of the viaduct.

3. The construction method for decoration and maintenance of a viaduct concrete guardrail according to claim 2 is characterized in that: The detachable safety guardrail is arranged on the periphery of the movable working platform to improve construction safety.

4. A construction method for decoration and maintenance of a viaduct concrete guardrail according to claim 3, characterized in that: The detachable safety guardrail is foldable.

5. The construction method for decoration and maintenance of a viaduct concrete guardrail according to claim 4 is characterized in that: Each section of the detachable safety guardrail is connected by a chain.

6. A construction method for decoration and maintenance of a viaduct concrete guardrail according to claim 5, characterized in that: The detachable safety guardrail is fixed on the movable working platform by bolts.

7. The construction method for decoration and maintenance of a viaduct concrete guardrail according to claim 1 is characterized by: The step five also includes setting a safety hook and a safety belt on the inner side of the viaduct concrete guardrail.

8. The construction method for decoration and maintenance of a viaduct concrete guardrail according to claim 1 is characterized by: The movable working platform is provided with an electric traction device, and the movable working platform can be manipulated to move by a handle.

9. A construction method for decoration and maintenance of viaduct concrete guardrails according to claim 8, characterized in that: A horizontal limiter is arranged on the steel wire rope near the two pulleys.

10. The construction method for decoration and maintenance of a viaduct concrete guardrail according to claim 1 is characterized in that: In the step 1, movable working platforms of different heights and widths can be adjusted and manufactured according to the elevated bridge concrete guardrails of different cross-sectional heights.

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