Construction method of concrete guardrail with anti-collision device

Abstract

The invention belongs to a construction method of a concrete guardrail with an anti-collision device. First, second and third calibration vertical supporting steel bars are arranged through a positioning scale rack; three pieces of horizontal square steel are horizontally placed on transition sections between the calibration vertical supporting steel bars respectively and are bound and fixed to the first calibration vertical supporting steel bar, the second calibration vertical supporting steel bar and the third calibration vertical supporting steel bar of the corresponding parts through iron wires, and three pieces of benchmark horizontal square steel are formed; and by taking the horizontal square steel of the three marker posts as calibration objects and referring to the pre-arranged steel bars on the two sides of the bridge deck slab in the section, positioning of the vertical supporting steel bars welded to the middle position of the section and welding and fixing of the vertical supporting steel bars and the pre-arranged steel bars at the corresponding positions are completed. The construction speed and quality can be effectively improved, operation is easy during construction, practicability is high, the effect is obvious, the construction speed is high, and time and labor are saved.

Description

Technical Field

[0001] The invention belongs to a construction method of a concrete guardrail with an anti-collision device. Background Art

[0002] At present, concrete guardrails are installed on both sides of the highway bridge deck to ensure the safety of vehicles on the highway. It plays a key role in reducing the severity of road traffic accidents and reducing economic losses. The construction of the current concrete guardrail is to pre-prepare steel bars on both sides of the bridge deck when pouring the highway bridge deck, which are used to support and fix the vertical support steel bars in the concrete guardrail that are perpendicular to the bridge deck, and then use a number of longitudinal steel bars to connect the vertical support steel bars to form a support steel grid in the concrete guardrail. Finally, use a formwork to pour concrete around the support steel grid. After demolding and curing, a concrete guardrail is formed. The height of the concrete guardrail is not less than 1.1m, the cross-section is trapezoidal, and the bottom width of the concrete guardrail is not less than 30cm. The concrete guardrail is an exposed project, and the quality of the guardrail is closely related to safety. First of all, it is necessary to ensure the linear smoothness of the supporting steel mesh in the concrete guardrail, and control the unevenness and wave problems of the top surface and sides, otherwise it will affect the quality of the concrete guardrail. However, the construction of the supporting steel mesh is currently carried out manually based on experience, and it is difficult to control the unevenness and wave problems of the top surface and sides, making it difficult for the concrete guardrail to meet the quality requirements.

[0003] On the other hand, concrete guardrails are fixed structures. When they are hit by an out-of-control moving vehicle, the impact points are concentrated, causing serious damage to both the concrete guardrails and the hitting vehicle. How to disperse and alleviate the impact force of the concrete guardrail when it is hit by an out-of-control vehicle to avoid damage to both the concrete guardrail and the hitting vehicle is also an issue that needs to be urgently addressed. Summary of the invention

[0004] The purpose of the present invention is to design a construction method of a concrete guardrail with an anti-collision device to overcome the shortcomings of the prior art.

[0005] To this end, a construction method of a concrete guardrail with an anti-collision device of the present invention comprises the following steps: (1) Prepare anti-collision devices and positioning scale frames, and manufacture vertical support steel bars and longitudinal steel bars at the steel bar processing plant. After manufacture, transport them to the site, and mark the guardrail template position line on the bridge deck; (2) Using the marked inner guardrail template position line as the mark line, set the positioning scale frame on the mark line, and make the front end surface of the lower base of the positioning scale frame flush with the mark line. The U-shaped scale frame rod is located at the set position in the middle of the concrete guardrail to be poured. By adjusting the adjustment screws, the height, horizontal and vertical positions of the U-shaped scale frame rod meet the design requirements; (3) Calibration of vertical support steel bars: take a vertical support steel bar close to one side of the positioning scale frame, and the corresponding part is close to the first, second, and third limit rods on the U-shaped scale frame rod, and the lower end of the vertical support steel bar is also close to the pre-prepared steel bar of the corresponding part of the corresponding side of the bridge deck. The lower end of the vertical support steel bar is welded and fixed to the pre-prepared steel bar of the corresponding part of the corresponding side to form a first calibration vertical support steel bar, and the positioning scale frame is removed; (4) Repeat steps (2) and (3) to set the second and third calibrated vertical support reinforcements 5 m apart longitudinally from the first calibrated vertical support reinforcement; (5) Three horizontal square steel bars are placed at the upper end, inner middle and lower transition sections between the first and second designated vertical support steel bars and between the second and third designated vertical support steel bars, and are tied and fixed with wires to the first to third designated vertical support steel bars at the corresponding parts, forming three horizontal square steel bars located at the first to third designated vertical support steel bars; (6) In the adjacent spaces of the first to third calibrated vertical support steel bars, three horizontal square steel bars are used as calibration objects and the pre-prepared steel bars on both sides of the bridge deck in the section are referred to to complete the positioning of each vertical support steel bar in the middle of the section and the welding and fixing with the corresponding pre-prepared steel bars; (7) A plurality of longitudinal steel bars are tied with iron wire to each vertical support steel bar between the first to third designated vertical support steel bars to connect each vertical support steel bar to form a support steel bar grid inside the concrete guardrail. According to the position of the steel rod hole in the designed anti-collision device, a pre-buried plastic pipe is provided at the corresponding position of the support steel bar grid; (8) Repeat steps (2) to (7) to complete the installation of the supporting steel mesh frame in the remaining sections of the concrete guardrail; (9) Lay out guardrail formwork on both sides of the supporting steel grid in the concrete guardrail, install the guardrail formwork according to the guardrail formwork position line, pour concrete, remove the formwork, and cure to complete the concrete guardrail construction; (10) According to the position of the pre-buried plastic pipe of the concrete guardrail, an anti-collision device is installed on the inner side of the concrete guardrail to complete the construction of the concrete guardrail with the anti-collision device.

[0006] As a further description of the above technical solution: the marked inner guardrail template position line is located on the inner bridge deck of the pre-reinforced steel bars of the bridge deck.

[0007] As a further description of the above technical solution: the shape of the U-shaped scale rod is the same as the shape of the vertical supporting steel bar.

[0008] As a further description of the above technical solution: the lower end surface of the anti-collision steel plate of the anti-collision device is installed 40 to 50 cm away from the bridge deck.

[0009] As a further description of the above technical solution: the anti-collision device is installed on the inner side of the concrete guardrail by aligning the rear end of the force-transmitting steel rod at the rear end of the anti-collision device with the inner side of the corresponding steel rod hole, sleeved an elastic force-reducing steel plate on the force-transmitting steel rod, and after the rear end of the force-transmitting steel rod passes through the inner side of the corresponding steel rod hole, a gasket is sleeved on the force-transmitting steel rod passing through the outer side of the steel rod hole of the concrete guardrail, and a fixing nut is screwed in, so that the elastic force-reducing steel plate is supported on the inner side of the concrete guardrail around the anti-collision steel plate and the steel rod hole.

[0010] As a further description of the above technical scheme: the positioning scale frame is composed of a support frame rod, a base, an upper cross support rod, a middle cross support rod, a lower cross support rod, a first to a third limit rod, a U-shaped scale frame rod, and various adjustment screws. The lower end of the support frame rod is fixed to the middle of the upper end of the base as a whole with a screw hole in the middle of the two side edges of the base. A frame body adjustment screw is screwed in the two screw holes. The front end of the support frame rod is perpendicular to the upper end, middle and lower end of the front end surface of the base, respectively, and an upper cross support rod, a middle cross support rod and a lower cross support rod are respectively provided. The upper end, middle and lower end of the U-shaped scale frame rod are respectively fixed to the upper cross support rod, the middle cross support rod and the front end of the lower cross support rod of the corresponding part, and the first, second and third limit rods are respectively provided at the upper end, middle and lower end of the rear side of the U-shaped scale frame rod, a nut seat is provided at the front lower end of the U-shaped scale frame rod, a frame rod adjustment screw is screwed in the middle of the nut seat, and a vertical meter and a level are provided on the upper part of the rear side surface of the support frame rod.

[0011] As a further description of the above technical solution: the anti-collision device is composed of an anti-collision steel plate, an anti-collision force reduction plate, an elastic force reduction steel plate, a force transmission steel rod, a gasket and a fixing nut. The anti-collision steel plate is a rectangular steel plate with a thickness of 2 cm, a length of 5 m and a width of 50 cm. An anti-collision force reduction plate is provided on the inner side of the anti-collision steel plate, and a pair of force transmission steel rods are provided on both sides of the outer side of the anti-collision steel plate and on the upper and lower vertical anti-collision steel plate surfaces in the middle. The outer side of the force transmission steel rod is a screw rod, the elastic force reduction steel plate is sleeved on the force transmission steel rod, and the gasket and the fixing nut are located on the force transmission steel rod.

[0012] As a further description of the above technical solution: the elastic force-reducing steel plate is composed of a cross-shaped arc-shaped elastic steel plate, a perforation is provided in the middle of the arc-shaped elastic steel plate, and the width of the arc-shaped elastic steel plate is 10-12 cm, the thickness is 6-10 mm, and the length is 15-20 cm.

[0013] As a further description of the above technical solution: the anti-collision force reduction plate is made of synthetic plastic or synthetic rubber, with a thickness of 1 to 3 cm.

[0014] The present invention has the following beneficial effects: 1. The method of the present invention can standardize the welding position of the guardrail steel bars and can make the guardrail steel bars layout reach excellent standards, thereby further improving the linear shape and protective layer thickness standards of the guardrail. The present invention improves the overall quality and safety of the structure. Accurate guardrail steel bar welding can avoid structural defects such as cracks caused by errors, increase the linear aesthetics, etc., thereby extending the service life of the bridge concrete guardrail. The present invention is equipped with an anti-collision device in the concrete guardrail. The anti-collision device can disperse and physically reduce the impact force of the running vehicle hitting the concrete guardrail when it loses control, thereby effectively avoiding damage to the impact vehicle and the concrete guardrail, and ensuring the safety of passengers.

[0015] 2. The present invention can effectively improve the construction speed and quality, is simple to operate during construction, has strong practicality, has obvious effects, fast construction speed, and saves time and effort. Practice has proved that the present invention shortens the construction time by 80% and reduces the number of personnel by more than 70% compared with conventional methods, and the construction is stable and safe, the quality is excellent, the use effect is good, and there is good economic benefit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of a concrete guardrail with an anti-collision device of the present invention; Figure 2 for Figure 1 Schematic diagram of the inner side structure; Figure 3 It is a schematic diagram of the front structure of the elastic force-reducing steel plate of the present invention; Figure 4 It is a schematic diagram of the structure of the positioning scale frame of the present invention; Figure 5 for Figure 4 Schematic diagram of the front end structure. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described in conjunction with specific embodiments below, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The construction methods in the following embodiments, unless otherwise specified, are all conventional methods. The materials, devices, equipment, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0018] like Figures 1 to 5 As shown, a construction method of a concrete guardrail with an anti-collision device comprises the following steps: (1) Prepare an anti-collision device and a positioning scale frame, and manufacture vertical support steel bars 15 and longitudinal steel bars 16 in a steel bar processing plant. After manufacture, transport them to the site, and mark the guardrail template position line on the bridge deck 22. The marked inner guardrail template position line is located on the inner bridge deck 22 of the pre-prepared steel bars of the bridge deck.

[0019] like Figures 4 to 5 As shown, the positioning scale frame is composed of a support frame rod 9, a base 14, an upper horizontal support rod 1, a middle horizontal support rod 5, a lower horizontal support rod 12, a first limiting rod 2, a second limiting rod 3, a third limiting rod 6, a U-shaped scale frame rod 4, a frame body adjustment screw 13 and a frame rod adjustment screw 7. The support frame rod 9 and the base 14 are both made of 4*4 square steel pipes, and the lower end of the support frame rod is fixed to the middle of the upper end of the base as a whole to form a stable T-shaped support frame. There are screw holes in the middle of both sides of the base 14, and a frame body adjustment screw 13 is screwed in each of the two screw holes. The frame body adjustment screw 13 and the frame rod adjustment screw 7 are steel wire rods with a diameter of 1.5 cm and a length of 20 cm. A horizontal handle is placed on the top of the steel wire rod. Turning the horizontal handle can drive the steel wire rod to move up and down in the screw hole, thereby adjusting the flatness and height of the T-shaped support frame and the U-shaped scale frame rod.

[0020] The upper end, middle part and lower part of the front end of the support frame rod are respectively provided with an upper cross support rod 1, a middle cross support rod 5 and a lower cross support rod 12 in the vertical direction of the front end surface of the base, and each cross support rod is made of a 10mm diameter steel bar. The shape of the U-shaped scale frame rod 4 is the same as the shape of the vertical support steel bar. The upper end, middle part and lower part of the U-shaped scale frame rod 4 are respectively fixed to the upper cross support rod, the middle cross support rod and the front end of the lower cross support rod of the corresponding part. The upper end, middle part and lower part of the rear side of the U-shaped scale frame rod are respectively provided with a first limit rod 2, a second limit rod 3 and a third limit rod 6. Each limit rod is used as a top holding point of the scale rod corresponding to the vertical support steel bar. The front lower end of the U-shaped scale frame rod is provided with a nut seat 8, and the middle part of the nut seat 8 is screwed with a frame rod adjustment screw 7. A vertical meter 11 and a level meter 10 are provided on the upper part of the rear side surface of the support frame rod to display the vertical and horizontal states of the positioning scale frame.

[0021] like Figures 1 to 3As shown, the anti-collision device is composed of an anti-collision steel plate 25, an anti-collision force reduction plate 26, an elastic force reduction steel plate 24, a force transmission steel rod 18, a gasket 20 and a fixing nut 19. The anti-collision steel plate is a rectangular steel plate with a thickness of 2 cm, a length of 5 m and a width of 50 cm. The inner side of the anti-collision steel plate 25 is provided with an anti-collision force reduction plate 26, which is made of synthetic plastic or synthetic rubber and has a thickness of 1 to 3 cm, and is used to reduce and disperse the impact force. A pair of force transmission steel rods 18 are provided on both sides of the outer side of the anti-collision steel plate and the middle part vertically above and below the anti-collision steel plate surface. The elastic force reduction steel plate 24 is composed of a cross-shaped arc elastic steel plate, and a perforation 27 is provided in the middle of the arc elastic steel plate. The width of the arc elastic steel plate is 10 to 12 cm, the thickness is 6 to 10 mm, and the length is 15 to 20 cm. The outer side of the force transmission steel rod is a screw rod, and the elastic force reduction steel plate 24 is sleeved on the force transmission steel rod. The gasket and the fixing nut are located on the force transmission steel rod.

[0022] (2) Using the marked inner guardrail template position line as the mark, set a positioning scale frame on the mark line, and make the front end surface of the lower base of the positioning scale frame flush with the mark line. The U-shaped scale frame rod is located in the middle of the concrete guardrail to be poured. By adjusting the adjustment screws, the height, horizontal and vertical positions of the U-shaped scale frame rod meet the design requirements.

[0023] (3) Calibration of vertical support steel bars: Take a vertical support steel bar 15 close to one side of the positioning scale frame, and the corresponding part is close to the first, second and third limit rods on the U-shaped scale frame rod 4. The lower end of the vertical support steel bar is also close to the pre-prepared steel bar 21 at the corresponding part of the corresponding side of the bridge deck 22. The lower end of the vertical support steel bar is welded and fixed to the pre-prepared steel bar at the corresponding part of the corresponding side to form a first calibrated vertical support steel bar, and the positioning scale frame is removed.

[0024] (4) Repeat steps (2) and (3) to set the second and third calibrated vertical support steel bars 5 m apart longitudinally from the first calibrated vertical support steel bars, i.e., the calibrated vertical support steel bars are 5 m apart from each other.

[0025] (5) Three horizontal square steels are placed horizontally at the upper end, inner middle and lower transition sections between the first and second marked vertical support steel bars and between the second and third marked vertical support steel bars, and are tied and fixed with wires at the corresponding first to third marked vertical support steel bars, forming three benchmark horizontal square steels located at the first to third marked vertical support steel bars.

[0026] (6) In the adjacent spaces of the first to third calibrated vertical support steel bars, three horizontal square steel bars are used as calibration objects and the pre-prepared steel bars on both sides of the bridge deck in the section are referred to to complete the positioning of each vertical support steel bar in the middle of the section and the welding and fixing with the corresponding pre-prepared steel bars; that is, three horizontal square steel bars are used as calibration scales, and the corresponding parts of each vertical support steel bar arranged at a distance between the first to third calibrated vertical support steel bars are made to rest against the three horizontal square steel bars, and then the lower part of each vertical support steel bar is welded and fixed with the corresponding pre-prepared steel bar, so as to complete the layout and fixing of each vertical support steel bar in the adjacent spaces of the first to third calibrated vertical support steel bars.

[0027] (7) A plurality of longitudinal steel bars 6 are tied with iron wire to connect the vertical support steel bars between the first to third calibrated vertical support steel bars to form a support steel bar grid inside the concrete guardrail. Pre-buried plastic pipes are installed at the corresponding positions of the support steel bar grid according to the positions of the steel rod holes 17 in the designed anti-collision device.

[0028] (8) Repeat steps (2) to (7) to complete the layout of the supporting steel mesh frame in the remaining sections of the concrete guardrail.

[0029] (9) Guardrail formwork is laid out on both sides of the supporting steel mesh frame in the concrete guardrail, and the guardrail formwork is installed according to the guardrail formwork position line, and concrete is poured, the formwork is removed, and curing is performed to complete the construction of the concrete guardrail 23.

[0030] (10) According to the position of the embedded plastic pipe of the concrete guardrail 23, an anti-collision device is installed on the inner side of the concrete guardrail 23. The lower end surface of the anti-collision steel plate of the anti-collision device is installed 40 to 50 cm away from the bridge deck. The rear end of the force-transmitting steel rod 18 at the rear end of the anti-collision device is aligned with the inner side of the corresponding steel rod hole 17. An elastic force-reducing steel plate is sleeved on each force-transmitting steel rod. After the rear end of the force-transmitting steel rod passes through the inner side of the corresponding steel rod hole, a gasket 20 is sleeved on the force-transmitting steel rod passing through the outer side of the steel rod hole 17 of the concrete guardrail, and a fixing nut 19 is screwed in, so that the elastic force-reducing steel plate is supported on the inner side of the concrete guardrail around the anti-collision steel plate and the steel rod hole, and the construction of the concrete guardrail with an anti-collision device is completed.

[0031] When a concrete guardrail with an anti-collision device is hit by an out-of-control car, the anti-collision force-reducing plate provided on the inner side of the anti-collision steel plate first contacts the impact point, and the anti-collision force-reducing plate first reduces and disperses the impact force of the impact point on the anti-collision steel plate. The six elastic force-reducing steel plates 24 sleeved on the force-transmitting steel rod at the rear end of the anti-collision steel plate shrink due to the impact force, further reducing and dispersing the impact force on the large area of ​​concrete guardrail surface behind the elastic force-reducing steel plate and then introducing it into the bridge deck. Under the contraction effect of the elastic force-reducing steel plate 24, the anti-collision steel plate moves backward, causing the force-transmitting steel rod to also move backward along the steel rod hole. Each elastic force-reducing steel plate has sufficient space to reduce and disperse the impact force, thereby avoiding or reducing damage to the concrete guardrail and the vehicle.

[0032] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A construction method for a concrete guardrail with an anti-collision device, characterized in that: The steps include: (1) Prepare anti-collision devices and positioning scale frames, and manufacture vertical support steel bars and longitudinal steel bars at the steel bar processing plant. After manufacture, transport them to the site, and mark the guardrail template position line on the bridge deck; (2) Using the marked inner guardrail template position line as the mark line, set the positioning scale frame on the mark line, and make the front end surface of the lower base of the positioning scale frame flush with the mark line. The U-shaped scale frame rod is located at the set position in the middle of the concrete guardrail to be poured. By adjusting the adjustment screws, the height, horizontal and vertical positions of the U-shaped scale frame rod meet the design requirements; (3) Calibration of vertical support steel bars: take a vertical support steel bar close to one side of the positioning scale frame, and the corresponding part is close to the first, second, and third limit rods on the U-shaped scale frame rod, and the lower end of the vertical support steel bar is also close to the pre-prepared steel bar of the corresponding part of the corresponding side of the bridge deck. The lower end of the vertical support steel bar is welded and fixed to the pre-prepared steel bar of the corresponding part of the corresponding side to form a first calibration vertical support steel bar, and the positioning scale frame is removed; (4) Repeat steps (2) and (3) to set the second and third calibrated vertical support reinforcements 5 m apart longitudinally from the first calibrated vertical support reinforcement; (5) Three horizontal square steel bars are placed at the upper end, inner middle and lower transition sections between the first and second designated vertical support steel bars and between the second and third designated vertical support steel bars, and are tied and fixed with wires to the first to third designated vertical support steel bars at the corresponding parts, forming three horizontal square steel bars located at the first to third designated vertical support steel bars; (6) In the adjacent spaces of the first to third calibrated vertical support steel bars, three horizontal square steel bars are used as calibration objects and the pre-prepared steel bars on both sides of the bridge deck in the section are referred to to complete the positioning of each vertical support steel bar in the middle of the section and the welding and fixing with the corresponding pre-prepared steel bars; (7) A plurality of longitudinal steel bars are tied with iron wire to each vertical support steel bar between the first to third designated vertical support steel bars to connect each vertical support steel bar to form a support steel bar grid inside the concrete guardrail. According to the position of the steel rod hole in the designed anti-collision device, a pre-buried plastic pipe is provided at the corresponding position of the support steel bar grid; (8) Repeat steps (2) to (7) to complete the layout of the supporting steel grid in the remaining sections of the concrete guardrail; (9) Lay out guardrail formwork on both sides of the supporting steel grid in the concrete guardrail, install the guardrail formwork according to the guardrail formwork position line, pour concrete, remove the formwork, and cure to complete the concrete guardrail construction; (10) According to the position of the pre-buried plastic pipe of the concrete guardrail, an anti-collision device is installed on the inner side of the concrete guardrail to complete the construction of the concrete guardrail with the anti-collision device.

2. The method according to claim 1, characterized in that: The inner guardrail template position line marked by the spring is located on the inner bridge deck of the pre-reinforced steel bars of the bridge deck.

3. The method according to claim 1, characterized in that: The shape of the U-shaped scale rod is the same as that of the vertical supporting steel bar.

4. The method according to claim 1, characterized in that: The lower end surface of the anti-collision steel plate of the anti-collision device is installed 40 to 50 cm away from the bridge deck.

5. The method according to claim 1, characterized in that: The anti-collision device is installed on the inner side of the concrete guardrail by aligning the rear end of the force-transmitting steel rod at the rear end of the anti-collision device with the inner side of the corresponding steel rod hole, sleeved an elastic force-reducing steel plate on the force-transmitting steel rod, and after the rear end of the force-transmitting steel rod passes through the inner side of the corresponding steel rod hole, sleeved a gasket on the force-transmitting steel rod passing through the outer side of the steel rod hole of the concrete guardrail, and screwed in a fixing nut, so that the elastic force-reducing steel plate is supported on the inner side of the concrete guardrail around the anti-collision steel plate and the steel rod hole.

6. The method according to claim 1, characterized in that: The U-shaped scale frame is composed of a support frame rod, a base, an upper cross support rod, a middle cross support rod, a lower cross support rod, a first to a third limit rod, a U-shaped scale frame rod, and each adjusting screw is composed of a support frame rod, a base, an upper cross support rod, a middle cross support rod, a lower cross support rod, a first to a third limit rod, a U-shaped scale frame rod, and each adjusting screw is composed of a support frame rod, a base, an upper cross support rod, a middle cross support rod, a lower cross support rod, and each adjusting screw 7. The method according to claim 1, characterized in that: The anti-collision device is composed of an anti-collision steel plate, an anti-collision force reduction plate, an elastic force reduction steel plate, a force transmission steel rod, a gasket and a fixing nut. The anti-collision steel plate is a rectangular steel plate with a thickness of 2 cm, a length of 5 m and a width of 50 cm. The inner side of the anti-collision steel plate is provided with an anti-collision force reduction plate, and a pair of force transmission steel rods are provided on both sides of the outer side of the anti-collision steel plate and on the upper and lower vertical anti-collision steel plate surfaces in the middle. The outer side of the force transmission steel rod is a screw rod, the elastic force reduction steel plate is sleeved on the force transmission steel rod, and the gasket and the fixing nut are located on the force transmission steel rod.

8. The method according to claim 7, characterized in that: The elastic force-reducing steel plate is composed of a cross-shaped arc-shaped elastic steel plate, a perforation is arranged in the middle of the arc-shaped elastic steel plate, and the arc-shaped elastic steel plate has a width of 10-12 cm, a thickness of 6-10 mm, and a length of 15-20 cm.

9. The method according to claim 7, characterized in that: The anti-collision force reduction plate is made of synthetic plastic or synthetic rubber and has a thickness of 1 to 3 cm.

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