Rapid protection device for blasting demolition of pavement of overline overbridge

Abstract

The utility model relates to the technical field of bridge construction, and discloses an overline overbridge blasting demolition road surface rapid protection device which comprises a plurality of steel plates, and the adjacent steel plates are fixedly connected through first steel bars. The clamping grooves are fixed to the surface of the steel plate in a staggered mode, and containing cavities are formed in the clamping grooves; and the elastic piece is embedded into the accommodating cavity of the clamping groove. The elastic pieces are distributed on the steel plate in a staggered mode, so that the elastic pieces are not prone to displacement when enormous impact occurs at the moment of falling of the bridge body, impact on road surfaces, national defense optical cables and toll optical cables is reduced, safety of the optical cables is guaranteed, toughness of the elastic pieces and rigidity of the steel plate are matched, and impact destructive power can be reduced when the bridge body falls.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, and more specifically, to a rapid protective device for demolishing a road surface by blasting a cross-line overpass. Background Art

[0002] With the rapid development of my country's transportation industry, highways are entering a period of large-scale reconstruction and expansion. The demolition of overpasses is a key and challenging aspect of highway reconstruction and expansion projects. Due to the high volume of traffic and the need to demolish them without disrupting vehicular traffic, the construction is challenging, time-sensitive, and dangerous. During the demolition process, the safety of both the highway pavement and the defense and toll optical cables beneath the central median must be ensured. Therefore, a seismic barrier layer is required to ensure the safety of both the pavement and the optical cables.

[0003] Currently, the main method for protecting the pavement during demolition blasting of overpasses in China involves laying plastic sheeting within a 3-meter radius of the bridge deck, followed by a 1.5-meter-thick layer of sand to protect the pavement. Highway overpasses are 12 meters wide, and highways are 42 meters wide. This large paving space requires a large amount of sand, which cannot be recycled after the protective work is completed, increasing construction costs. Laying and leveling large amounts of sand takes considerable time, making subsequent slag removal more difficult, thus prolonging highway traffic control times and reducing economic efficiency. During the demolition of overpasses, the bridge generates a tremendous impact force at the moment of its fall, and the sand is not very effective in resisting this impact. This has resulted in damage to the highway pavement, defense fiber optic cables, and toll cables under the immense impact of the bridge.

[0004] In summary, it is very important to seek a protective device for the blasting and demolition of overpasses that is simple to operate, has good protective effect, is easy to remove slag, can be recycled and reused, and can protect highway pavements, national defense optical cables, and toll optical cables. Utility Model Content

[0005] The purpose of the utility model is to provide a rapid protective device for demolishing the road surface by blasting of an overpass, so as to solve the problems existing in the prior art. By fixing an elastic part on a steel plate, the toughness of the elastic part and the rigidity of the steel plate cooperate with each other, thereby reducing the impact and destructive force of the bridge body on the road surface when the bridge body falls.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a rapid protection device for the demolition of the road surface by blasting of an overpass, comprising: a plurality of steel plates, adjacent to each other being fixedly connected by a first steel bar; a card slot, the card slots being staggered and fixed on the surface of the steel plate, and a receiving cavity being provided in the card slot; and an elastic member, the elastic member being embedded in the receiving cavity of the card slot.

[0007] Furthermore, the slot is surrounded by a second steel bar, and the second steel bar is fixed to the surface of the steel plate.

[0008] Furthermore, the elastic member is a tire, the tire is adapted to the accommodating cavity, and the tire is embedded in the accommodating cavity.

[0009] Furthermore, the tires are staggeredly distributed on the surface of the steel plate.

[0010] Furthermore, the steel plates are laid flat on a horizontal surface during assembly.

[0011] Furthermore, the steel plates are stacked vertically during assembly.

[0012] The utility model discloses the following technical effects:

[0013] 1. The elastic parts in this device are staggered and distributed on the steel plate. Therefore, they are not easily displaced when subjected to the huge impact of the bridge falling, thereby reducing the impact on the road surface, defense optical cables and toll optical cables to ensure their safety. In addition, the toughness of the elastic parts and the rigidity of the steel plate cooperate with each other to reduce the impact and destructive force when the bridge falls.

[0014] 2. This device is easy to assemble. Adjacent steel plates are fixed with steel bars to form prefabricated parts. With the cooperation of cranes and manual labor, protection can be quickly completed. At the same time, it can be quickly removed, which is convenient for cleaning the road surface, speeding up the slag removal work, reducing the high-speed traffic control time, and increasing economic benefits.

[0015] 3. This device can be recycled and reused after the blasting and demolition of the road surface protection work of the overpass is completed;

[0016] 4. The assembly height of this device can be appropriately adjusted according to the height of the overpass from the highway road surface, making it more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the horizontal assembly of the utility model;

[0020] Figure 3 This is a schematic diagram of the vertical assembly of the utility model;

[0021] Figure 4 This is a side view of the utility model after assembly;

[0022] Among them, 1. tire; 2. steel plate; 3. first steel bar; 4. slot. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] like Figures 1-4 As shown, the utility model provides a rapid protection device for blasting and demolishing a road surface of an overpass, comprising: a plurality of steel plates 2, adjacent steel plates 2 being fixedly connected by a first steel bar 3; a card slot 4, the card slot 4 being staggered and fixed on the surface of the steel plate 2, and a receiving cavity being provided in the card slot 4; and an elastic member, the elastic member being embedded in the receiving cavity of the card slot 4.

[0026] In this embodiment, the steel plates 2 are 6 m long and 2 m wide, and adjacent steel plates 2 are fixed by welding with first steel bars 3 .

[0027] The slot 4 is surrounded by four second steel bars, which are welded and fixed to the surface of the steel plate 2, so that the slots 4 are staggered on the surface of the steel plate 2. The four second steel bars form a receiving cavity, that is, the receiving cavity of the slot 4, and an elastic part is embedded in the receiving cavity.

[0028] The elastic member is a tire 1, and the edges of the tire 1 are tangent to the second steel bar, so that the tire 1 is embedded in the slot 4. At the same time, the slot 4 can ensure that the tire 1 is clamped to prevent the tire 1 from falling or moving.

[0029] In this device, three steel plates 2 are welded and fixed by first steel bars 3 to form a prefabricated part, and a tire 1 is fixed on the surface of the prefabricated part through a groove 4.

[0030] A crane is used to lay a layer of the prefabricated device horizontally on the asphalt pavement, central isolation belt and 3 meters outside the bridge deck projection in the construction area under the bridge. That is, the prefabricated parts are laid flat on the horizontal plane. When laying, the tire 1 faces the ground, and multiple prefabricated parts are laid to form a protective surface with a length of 42m and a width of 18m. Then another layer is laid on top of the prefabricated parts so that the two layers of prefabricated parts are stacked up and down in the vertical direction. The orientation of the tire 1 is kept consistent, and the placement direction of the upper prefabricated parts is perpendicular to the placement direction of the lower prefabricated parts. The purpose is to stagger the tires 1 on the upper and lower sides to increase the buffering force. Finally, a layer of tire 1 is manually laid on the top steel plate 2 to further increase the buffering force and reduce the impact force when the bridge falls.

[0031] In this embodiment, the tires 1 are staggered and laid on the steel plates 2, and the tires 1 are fixed to the surface of the steel plates 2 by means of the card slots 4, so that they are not easily displaced when subjected to a huge impact at the moment of the bridge falling, thereby reducing the impact on the road surface, defense optical cables and toll optical cables to ensure their safety; during the assembly process, the prefabricated parts are first laid horizontally on the ground, and then a layer of prefabricated parts is laid on top of the prefabricated parts, and the directions in which the stacked upper and lower prefabricated parts are placed are perpendicular to each other, and the steel plates 2 in the lower prefabricated parts and the tires 1 in the upper prefabricated parts abut against each other, so that the toughness of the tires 1 and the rigidity of the steel plates 2 cooperate with each other to minimize the impact destructive force when the bridge falls; and The assembly height of the device can be appropriately adjusted according to the height of the overpass from the highway road surface, and the shockproof effect is better. The device is simple to assemble. The steel plate 2 is fixed and welded by the first steel bar 3, and the second steel bar is welded on the steel plate 2 to form a slot. After the tire is placed, a prefabricated part is formed. The prefabricated part can quickly complete the laying of the protective surface with the cooperation of a crane and manpower. After the protection operation is completed, the prefabricated part is easy to clear away quickly, exposing the road surface, speeding up the slag cleaning work, reducing the highway closure time, and increasing economic benefits. After the overpass blasting and demolition road surface protection work is completed, it can be recycled and reused. The tire 1 and the steel plate 2 are assembled together to make the protection work simple, convenient and efficient.

[0032] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A rapid protection device for demolishing a road surface by blasting a cross-line overpass, characterized in that: include: A plurality of steel plates (2), wherein adjacent steel plates (2) are fixedly connected via first steel bars (3); A card slot (4), the card slot (4) being staggered and fixed on the surface of the steel plate (2), and a receiving cavity being provided in the card slot (4); an elastic member, the elastic member being embedded in the accommodating cavity of the card slot (4); The clamping groove (4) is surrounded by a second steel bar, and the second steel bar is fixed to the surface of the steel plate (2); The elastic member is a tire (1), the tire (1) is adapted to the accommodating cavity, and the tire (1) is embedded in the accommodating cavity; The edges of the tire (1) are tangent to the second steel bar, so that the tire (1) is embedded in the clamping groove (4). At the same time, it is possible to ensure that the clamping groove (4) clamps the tire (1) to prevent the tire (1) from falling or moving; The three steel plates (2) are welded and fixed to each other via the first steel bars (3) to form a prefabricated part, and the tire (1) is fixed to the surface of the prefabricated part via the clamping groove (4).

2. The rapid protection device for demolishing a road surface by blasting a flyover according to claim 1 is characterized by: The tires (1) are staggeredly distributed on the surface of the steel plate (2).

3. The rapid protection device for demolishing a road surface by blasting a flyover according to claim 1 is characterized by: The steel plate (2) is laid flat on a horizontal surface during assembly.

4. The rapid protection device for demolishing a road surface by blasting a flyover according to claim 1 is characterized by: The steel plates (2) are stacked vertically when assembled.

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