Construction method for repairing damage to block-stone wall of revetment

Abstract

A construction method for repairing damage to a block-stone wall of a revetment. The construction method comprises the following steps: S1. manufacturing main frames (1); S2. manufacturing fixed triangular braces (7); S3. manufacturing movable transverse braces (11); S4. manufacturing pin shafts (13); S5. manufacturing a passage safety protection construction platform; and S6. performing a damage repair operation on the block-stone wall of the revetment: successively moving the passage safety protection construction platform upwards from bottom to top, performing the damage repair operation on the block-stone wall of the revetment on the passage safety protection construction platform, and then repeating the operation from left to right until the damage repair operation on the entire block-stone wall of the revetment is completed.

Description

A construction method for repairing damaged riprap walls. Technical Field

[0001] This invention relates to the field of water conservancy engineering, and in particular to a construction method for repairing damaged revetment riprap walls. Background Technology

[0002] For masonry riprap revetments, how to complete the revetment repair quickly, at low cost, and with guaranteed quality has become an engineering challenge. Quality and cost are contradictory. In order to reduce costs, the construction party usually chooses partial repair. However, the repair of the concrete grouted texture of the hollow side of the masonry wall is the most difficult of the many repairs.

[0003] The difficulty in repairing the side of the riprap wall lies in the lack of a suitable working platform. In the past, there were usually two methods for setting up a working platform: one is to erect a scaffolding platform on the outside of the revetment, which is necessary because the water outside the revetment is not deep and requires the assistance of a transport boat; the other is to directly use the transport boat for the operation, but the working area is only the area that people can reach on the boat. Both methods have significant limitations on working conditions and require a transport boat, resulting in high implementation costs and making it difficult to control construction costs and time.

[0004] The purpose of this invention is to provide a method for repairing damaged revetment riprap walls by quickly constructing a small and convenient channel safety protection construction platform, thereby solving the problem that repairing damaged revetment riprap walls requires the reliance on complex construction platforms.

[0005] The technical solution adopted in this invention is: a construction method for repairing damaged riprap walls, comprising the following steps: S1. Constructing a main frame: two main frames are cut and welded using channel steel. The main frame includes an upper hook frame, and the lower part of the main frame is a vertical frame body. The frame body is connected to the upper hook frame through a diagonal joint frame made of channel steel. Then, trapezoidal steel backing plates are welded to the inner side of the frame body. Pre-drilled screw holes are made on the frame body every half meter; S2. Constructing fixed triangular braces: triangular diagonal braces are welded using channel steel on the outer side of the frame body below the pre-drilled screw holes, and a horizontal steel plate is welded horizontally above the diagonal braces to complete the construction of the fixed triangular braces; S3. Constructing movable horizontal braces: horizontal horizontal braces are constructed by fixing channel steel to the horizontal steel plate of the triangular braces. The length of the horizontal horizontal brace is ≥90cm. Through holes are drilled at the inner end of the horizontal horizontal brace at the pre-drilled screw holes to complete the construction of the movable horizontal brace; S4. S5. Construct a safety protection construction platform for the passageway: Use channel steel and steel plates to make a shaped passageway plate on the same row of movable cross braces. Vertically weld steel pipe sleeves on the outside of the shaped passageway plate as guardrail fixing holes. The guardrail is made of steel pipes that match the steel pipe sleeves to make a grid-shaped guardrail with feet. Insert the feet into the holes to form the safety protection construction platform for the passageway. S6. Carry out the repair work on the damaged riprap wall: Move the safety protection construction platform from bottom to top and carry out the repair work on the damaged riprap wall on the safety protection construction platform. Repeat the operation from left to right until the entire damaged riprap wall repair work is completed.

[0006] A further technical solution of the present invention is that the hook frame is made into a square hook shape according to the size of the coping of the wall.

[0007] A further technical solution of the present invention is: a vertical steel plate is welded to the outside of the horizontal steel plate as a movable horizontal support guard plate.

[0008] A further technical solution of the present invention is: a vertical steel plate is welded to the outside of the horizontal cross brace as a platform guard plate.

[0009] A further technical solution of the present invention is that the main frame, fixed triangular brace, movable cross brace, pin shaft and guardrail are independent prefabricated components, which are welded, fixed and assembled during construction.

[0010] The beneficial effects of this invention are as follows: 1. The materials used in the channel safety protection construction platform are common, the structure is simple, the manufacturing process is easy, and the cost is low; 2. The channel safety protection construction platform has a high degree of assembly, making it easy to install, dismantle, and use; 3. The channel safety protection construction platform replaces the construction of waterborne vessels and work platforms, changing waterborne construction to land-based construction near water, simplifying construction measures, improving efficiency, and reducing equipment and labor costs; 4. The repair construction of damaged revetment riprap walls changes the original reliance on transport vessels and overall scaffolding for overall construction, and innovatively adopts a rapid construction of small, convenient channel safety protection construction platforms for localized mobile construction, resulting in high efficiency and precise repair work. Attached Figure Description

[0011] Figure 1 is a front structural schematic diagram of the channel safety protection construction platform of the present invention;

[0012] Figure 2 is a side view of the construction platform for channel safety protection described in this invention. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] A method for repairing damaged riprap walls is as follows: First, the site conditions are determined, mainly the size of the capping of the riprap wall and the location of the damaged cavities. Then, a safety protection construction platform is erected at the lowest construction point using manual ropes. Workers then descend to the safety protection construction platform via ladders to carry out construction. After the construction is completed, the safety protection construction platform is moved to the next construction height to continue construction until the vertical surface is completed. The construction section is then moved horizontally, and the above work is repeated until the entire riprap wall is repaired.

[0015] As shown in Figures 1 and 2, the construction platform for the passageway safety protection includes the following steps: S1. Fabricating the main frame 1: Two main frames are cut and welded from channel steel. The main frame includes an upper hook frame 2, which is made into a square hook shape according to the shape of the coping 6 of the wall, so that the main frame can be hooked onto the coping. The lower part of the main frame is a vertical frame body 3, which is connected to the upper hook frame 2 through a diagonal joint frame 4 made of channel steel. Then, a trapezoidal steel backing plate 5 is welded to the inside of the frame body so that when the hook frame is hooked onto the coping, the steel backing plate abuts against the wall to support the frame body. Pre-fabricated screw holes are made on the frame body every half meter; S2. S3. Construct a fixed triangular brace 7. Weld a triangular diagonal brace 8 using channel steel on the outer side of the frame below the pre-drilled screw holes. Weld a horizontal steel plate 9 above the diagonal brace as the support surface for the movable cross brace. To prevent the movable cross brace from shifting under stress, weld a vertical steel plate on the outer side of the horizontal steel plate as a protective plate 10 for the movable cross brace to prevent shifting. This completes the construction of the fixed triangular brace. S4. Construct a movable cross brace 11. Construct a horizontal cross brace 12 using channel steel fixed to the horizontal steel plate of the triangular brace. The length of the horizontal cross brace is ≥90cm. Weld a steel plate vertically on the outer side as a platform protective plate to prevent the work platform from slipping. Drill through holes at the inner end of the horizontal cross brace at the pre-drilled screw holes for connection with the pin 13. Select two movable cross braces in the same row according to the required working height. S5. Construct the pin: Use bolts with pin holes drilled in the middle of the screw rod as pins to connect the movable cross brace and fix it to the main frame. To prevent the bolt from stripping, insert a pin 14 into the pin hole for fixation. A safety protection construction platform for the passageway is constructed. A fixed passageway plate 15 is made of channel steel and steel plate on the same row of movable cross braces. A steel pipe sleeve 16 is vertically welded on the outside of the fixed passageway plate as a fixing hole for the guardrail. The guardrail is made of steel pipe that matches the steel pipe sleeve and is made into a grid-shaped guardrail 17 with feet. The feet are inserted into the holes to form the safety protection construction platform for the passageway.

[0016] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for repairing a damaged revetment block wall, characterized by, Includes the following steps: S1. Fabricate the main frame by cutting and welding two main frames using channel steel. The main frame includes an upper hook frame and a vertical frame body in the lower middle part. The frame body is connected to the upper hook frame by a diagonal joint frame made of channel steel. Then, a trapezoidal steel backing plate is welded to the inside of the frame body. Pre-fabricated screw holes are opened on the frame body every half meter. S2. To make a fixed triangular brace, channel steel is welded into a triangular brace on the outside of the frame below the pre-drilled screw holes, and a horizontal steel plate is welded on top of the brace to complete the construction of the fixed triangular brace. S3. To make a movable cross brace, a horizontal cross brace is made by fixing a channel steel to the horizontal steel plate of the triangular brace. The length of the horizontal cross brace is ≥90cm. A through hole is drilled at the inner end of the horizontal cross brace at the pre-made screw hole to complete the making of the movable cross brace. S4. Make a pin: Use the bolt with the pin hole drilled in the middle of the screw as a pin to connect the movable cross brace to the main frame and fix it in place. Insert the pin into the pin hole to fix it. S5. Construct a safety protection construction platform for the passageway. Use channel steel and steel plates to make a fixed passageway plate on the same row of movable cross braces. Vertically weld steel pipe sleeves on the outside of the fixed passageway plate as fixing holes for the guardrail. The guardrail is made of steel pipes that match the steel pipe sleeves to form a grid-shaped guardrail with feet. Insert the feet into the holes to form a safety protection construction platform for the passageway. S6. Carry out the repair work on the damaged riprap wall. Move the channel safety protection construction platform from bottom to top and carry out the repair work on the damaged riprap wall on the channel safety protection construction platform. Then repeat the operation from left to right until the entire repair work on the damaged riprap wall is completed.

2. The method for repairing the damaged revetment block wall according to claim 1, characterized in that: The hook frame is made into a square hook shape according to the size of the coping of the wall.

3. The method for repairing the damaged revetment block wall according to claim 1, characterized in that: The method involves welding a vertical steel plate to the outside of the horizontal steel plate to serve as a movable horizontal support plate.

4. The method for repairing the damaged revetment block wall according to claim 1, characterized in that: Vertical steel plates are welded to the outside of the horizontal cross brace to serve as platform guard plates.

5. The method for repairing the damaged revetment block wall according to claim 1, characterized in that: The main frame, fixed triangular brace, movable cross brace, pin shaft, and guardrail are all prefabricated components, which are welded, fixed, and assembled during construction.

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