A telescopic joint device and its construction method

Abstract

The present invention relates to the technical field of expansion joint construction, and more specifically to an expansion joint device. It is arranged on the bridge concrete layer and includes a first bridge body, a second bridge body, and an expansion joint; the first bridge body is provided with a first fixing member; the second bridge body is provided with a second fixing member; a joint bridging member is spanned above the first fixing member and the second fixing member; the joint bridging member includes a lintel and a lintel limit fixing member; a plurality of lintel limit fixing members and lintels are fixedly arranged at intervals on the first fixing member and the second fixing member; one end of the lintel is fixedly connected to the first fixing member or the second fixing member, and the other end can move freely; the first fixing member or the second fixing member is respectively connected to a first fixing mechanism arranged in the first bridge body and the second bridge body; the lintel is connected to a second fixing mechanism arranged in the first bridge body and the second bridge body. The present invention has small vibration, strong bearing capacity, and convenient construction.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion joint construction, and more specifically, to an expansion joint device. Background Art

[0002] A building expansion joint, i.e., an expansion joint, refers to a structural joint provided at an appropriate position along the construction joint direction of a building or structure to prevent cracks or damage to building components due to climate temperature changes (thermal expansion and contraction). The expansion joint divides the building components above the foundation into two independent parts, enabling the building or structure to expand horizontally in the longitudinal direction.

[0003] In buildings such as highways, expansion joints are very common. In continuous bridge decks, cracks often appear in the surface paving. Measures such as pre-cutting the bridge deck, setting joints, using a softer paving layer to absorb cracks, or installing small expansion devices are often taken to solve the problem. Integrating the expansion device with the beam body into an equally strong whole is undoubtedly an important means to improve its service efficiency. The fixing and combination of the bridge expansion joint device and the bridge deck are often not sufficient, and the effect is not very satisfactory. The overall expansion component is prone to local internal stress. Summary of the Invention

[0004] The purpose of the present invention is to provide an expansion joint device with low vibration, strong bearing capacity, and convenient construction.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An expansion joint device is provided on the bridge concrete layer, including a first bridge body and a second bridge body. A through expansion joint is provided between the first bridge body and the second bridge body; the expansion joint penetrates the bridge concrete layer;

[0007] On the top surface of the first bridge body near the expansion joint, a first placement area is provided, and a first fixing member is provided in the first placement area; on the top surface of the second bridge body near the expansion joint, a second placement area is provided, and a second fixing member is provided in the second placement area; a joint covering member straddles the upper parts of the first fixing member and the second fixing member, and the joint covering member covers the expansion joint; the upper surface of the joint covering member is flush with the upper surface of the bridge;

[0008] The lapped joint member includes a lintel and a lintel limit fixing member; a number of lintel limit fixing members and lintels are fixedly arranged at intervals on the first fixing member, and a number of lintels and lintel limit fixing members are fixedly arranged at intervals on the second fixing member; one end of the lintel is fixedly connected to the first fixing member or the second fixing member, and the other end is freely movable; the free end of the lintel extends and covers the expansion joint; the lintel limit fixing member on each first fixing member is arranged opposite to a lintel on the second fixing member, and the lintel on each first fixing member is arranged opposite to a lintel limit fixing member on the second fixing member;

[0009] The first fixing member or the second fixing member is respectively connected to a first fixing mechanism arranged in the first bridge body and the second bridge body;

[0010] The lintel is connected to a second fixing mechanism arranged in the first bridge body and the second bridge body.

[0011] Furthermore, the lintels and the lintel limit fixing members on the first fixing member are sequentially connected by a pin shaft; the lintels and the lintel limit fixing members on the second fixing member are sequentially connected by a pin shaft.

[0012] Furthermore, the first fixing member and the second fixing member are an integral structure along the length direction of the expansion joint; or, the first fixing member and the second fixing member are a segmented structure along the length direction of the expansion joint.

[0013] Furthermore, the lintel limit fixing members and lintels on the first fixing member and the lintels and lintel limit fixing members on the second fixing member are cooperatively arranged into a number of groups of the lapped joint members arranged side by side, and a receiving space is formed between the lintels in adjacent lapped joint members, and the receiving space is filled with a waterproof caulking material.

[0014] Furthermore, the waterproof caulking material is a waterproof caulking asphalt glue.

[0015] Furthermore, the lintel and the lintel limit fixing member are I-beam members; the first fixing member and the second fixing member are angle steel members.

[0016] Furthermore, the first fixing mechanism includes a first anchor and a second anchor, the first anchor is used to constrain the first fixing member or the second fixing member in the direction perpendicular to the expansion joint; the second anchor is used to constrain the first fixing member or the second fixing member in the vertical direction of the expansion joint.

[0017] Further, the second fixing mechanism includes a support base and a third anchor. The support base is used to support the lintel along the length direction of the expansion joint; the third anchor is used to restrict the support base along the vertical direction of the expansion joint.

[0018] Further, longitudinal anchors are provided at the first anchor, the second anchor, and the third anchor along the length direction of the expansion joint. The longitudinal anchors are fixedly connected to the first anchor, the second anchor, and the third anchor.

[0019] Further, the expansion joint device further includes a fourth anchor. The fourth anchor is partially embedded in the bridge concrete layer; some or all of the first anchor, the second anchor, and the third anchor are fixedly connected to the fourth anchor; the expansion joint device forms an integral body with the bridge concrete layer through pouring.

[0020] A construction method for an expansion joint device, the construction steps of which include:

[0021] Set the embedded parts. When pouring the bridge concrete layer, embed the fourth anchor in the bridge concrete layer;

[0022] Set the first fixing mechanism. The lintel limit fixing piece is fixed on the first fixing piece or the second fixing piece. Prepare the first fixing piece or the second fixing piece in place and fix it to the first anchor and the second anchor; Set the second anchor to be fixed to the fourth anchor;

[0023] Set the second fixing mechanism. Prepare the support base in place and fix it to the third anchor; Set the third anchor to be fixed to the fourth anchor;

[0024] Set the longitudinal anchor;

[0025] Install the formwork and pour the concrete;

[0026] Cure the concrete and remove the formwork;

[0027] Install the lintel. The I-beam lintel is installed on the first fixing piece or the second fixing piece;

[0028] Pour the waterproof caulking material. The accommodating space between adjacent lintels is filled with the waterproof caulking material.

[0029] Further, the lintel limit fixing piece I-beam and the first anchor reinforcement are welded to the angle steel of the first fixing piece or the second fixing piece and prefabricated to form an integral body.

[0030] The beneficial effects of the present application:

[0031] This application has little vibration, thus eliminating the adverse factors of the vehicle damaging the expansion joint device and the adverse effects of vibration on the vehicle, while improving the driving comfort of the passengers and drivers.

[0032] The main load-bearing component of the expansion joint device of this application is the I-beam lintel, which has strong bearing capacity.

[0033] The expansion joint device of this application has a simple structure and no vulnerable parts, so its durability is very high. The expansion joint device of this application has no seams, and the probability of damage is very low.

[0034] The vulnerable part of the expansion joint device of this application is the I-beam lintel. Each I-beam works independently. If a certain I-beam is damaged, it can be replaced very conveniently without affecting other parts.

[0035] The installation and construction of the expansion joint device of this application are convenient. The components are processed and transported separately and assembled into a whole on-site without the need to use large equipment.

[0036] The expansion joint device of this application has a reasonable structure and saves materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic structural diagram of the horizontal plane direction of this application.

[0038] Figure 2 For this application Figure 1 The schematic structural diagram of the 1-1 section in it.

[0039] Figure 3 It is a schematic structural diagram of the side-by-side lintels of this application.

[0040] Figure 4 It is a schematic cross-sectional structural diagram of the I-beam of the lintel of this application.

[0041] Figure 5 It is a schematic structural and dimensional diagram of an embodiment of the I-beam of the lintel of this application.

[0042] Figure 6 It is a schematic structural and dimensional diagram of an embodiment of the I-beam of the lintel limit fixing part of this application.

[0043] Figure 7 It is a schematic structural and dimensional diagram of the first fixing part of this application.

[0044] Figure 8a 、 8b 、8c, 8d are schematic structural and dimensional diagrams of the first anchor, the second anchor, the third anchor, and the fourth anchor of this application.

[0045] Figure 9 It is a schematic diagram for calculating the bearing capacity of the I-beam of this application.

[0046] Figure 10 For this application Figure 1 Another schematic diagram of the 1-1 sectional structure in this application.

[0047] Wherein:

[0048] Lintel 1

[0049] Lintel limit fixing part 2

[0050] First fixing part 31

[0051] Second fixing part 32

[0052] Pin shaft 4

[0053] Support seat 5

[0054] First anchor 6

[0055] Second anchor 7

[0056] Third anchor 8

[0057] Longitudinal anchor 9

[0058] Fourth anchor 10

[0059] Waterproof caulking material 11

[0060] Reinforcement mesh 12. Specific implementation manner

[0061] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0062] An expansion joint device, which is arranged on the bridge concrete layer and includes a first bridge body and a second bridge body. A through expansion joint is arranged between the first bridge body and the second bridge body; the expansion joint penetrates the bridge concrete layer. A first placement area is arranged on the top surface of the first bridge body close to the expansion joint, and a first fixing part 31 is arranged in the first placement area; a second placement area is arranged on the top surface of the second bridge body close to the expansion joint, and a second fixing part 32 is arranged in the second placement area; a joint covering member is spanned on the upper parts of the first fixing part 31 and the second fixing part 32, and the joint covering member covers the expansion joint; the upper surface of the joint covering member is flush with the upper surface of the bridge.

[0063] The lapping piece includes a lintel 1 and a lintel limiting and fixing piece 2; a number of lintel limiting and fixing pieces 2 and lintels 1 are fixedly arranged at intervals on the first fixing piece 31, and a number of lintels 1 and lintel limiting and fixing pieces 2 are fixedly arranged at intervals on the second fixing piece 32; one end of the lintel 1 is fixedly connected to the first fixing piece 31 or the second fixing piece 32, and the other end is freely movable; the free end of the lintel 1 extends and covers the expansion joint; the lintel limiting and fixing piece 2 on each first fixing piece 31 is arranged opposite to one lintel 1 on the second fixing piece 32, and the lintel 1 on each first fixing piece 31 is arranged opposite to one lintel limiting and fixing piece 2 on the second fixing piece 32.

[0064] The lintels 1 and the lintel limiting and fixing pieces 2 on the first fixing piece 31 are sequentially connected by a pin shaft 4; the lintels 1 and the lintel limiting and fixing pieces 2 on the second fixing piece 32 are sequentially connected by a pin shaft 4. Wherein, the first fixing piece 31 and the second fixing piece 32 are an integral structure along the length direction of the expansion joint; or, the first fixing piece 31 and the second fixing piece 32 are a segmented structure along the length direction of the expansion joint.

[0065] The lintel 1 and the lintel limiting and fixing piece 2 are I-beam members; the first fixing piece 31 and the second fixing piece 32 are angle steel members.

[0066] The lintel limiting and fixing pieces 2 and lintels 1 on the first fixing piece 31 and the lintels 1 and lintel limiting and fixing pieces 2 on the second fixing piece 32 are cooperatively arranged to form a number of groups of lapping pieces arranged side by side. A containing space is formed between the lintels 1 in adjacent lapping pieces, and a waterproof caulking material 11 is filled in the containing space. The waterproof caulking material 11 is waterproof caulking asphalt glue.

[0067] The first fixing piece 31 or the second fixing piece 32 is respectively connected to a first fixing mechanism arranged in the first bridge body and the second bridge body. The first fixing mechanism includes a first anchor 6 and a second anchor 7. The first anchor 6 is used to restrain the first fixing piece 31 or the second fixing piece 32 in the vertical direction of the expansion joint; the second anchor 7 is used to restrain the first fixing piece 31 or the second fixing piece 32 in the vertical direction of the expansion joint.

[0068] The lintel 1 is connected to a second fixing mechanism disposed in the first bridge body and the second bridge body. The second fixing mechanism includes a support base 5 and a third anchor 8. The support base 5 is used to support the lintel 1 along the length direction of the expansion joint; the third anchor 8 is used to restrict the support base 5 in the direction perpendicular to the expansion joint. A longitudinal anchor 9 is provided at the first anchor 6, the second anchor 7, and the third anchor 8 along the length direction of the expansion joint, and the longitudinal anchor 9 is fixedly connected to the first anchor 6, the second anchor 7, and the third anchor 8.

[0069] The expansion joint device further includes a fourth anchor 10, and a part of the fourth anchor 10 is pre-embedded in the bridge concrete layer; part or all of the first anchor 6, the second anchor 7, and the third anchor 8 are fixedly connected to the fourth anchor 10; the expansion joint device forms an integral body with the bridge concrete layer through pouring.

[0070] The expansion joint device is composed of an I-beam lintel 1 staggered and placed on the upper part of the reserved expansion joint device of the bridge, angle steel first fixing parts 31 and second fixing parts 32 for fixing the I-beam lintel in the concrete, an I-beam lintel limit fixing part 2 welded to the first fixing part 31 and the second fixing part 32 for fixing the I-beam lintel, a round steel support base 5 poured in the concrete, and a round steel pin shaft 4. All the I-beams are made of special I-beams with a height of 48 mm and a width of 32 mm. Anchor bars are welded on the angle steel first fixing parts 31, the second fixing parts 32, and the round steel support base 5 to ensure the firm connection between the first fixing parts 31, the second fixing parts 32, and the round steel support base 5 and the concrete. During factory processing, the lintel limit fixing part 2 is firmly welded to the angle steel first fixing part 31 and the second fixing part 32 at the accurate positions by electric welding. During on-site installation, first, the angle steel first fixing parts 31, the second fixing parts 32, and the round steel support base 5 are firmly welded to the embedded steel bars of the expansion joint device at the accurate positions by electric welding, and then concrete is poured. After the concrete formwork is removed, the I-beam lintel 1 is installed. After the I-beam lintel 1 is installed, the cavity of the I-beam is filled with waterproof rubber material to make the entire expansion joint device into an airtight and watertight integral plate.

[0071] Reinforcement mesh sheets 12 are also provided at the first fixing part and the second fixing part. The reinforcement mesh sheets serve as the concrete protection layer. The reinforcement mesh sheets are not the structures carried when leaving the factory, but the last process of on-site installation. The purpose is to serve as the concrete protection layer to prevent the concrete from cracking due to the long-term rolling of vehicles. The cracks allow water to enter and cause corrosion to the expansion device and the steel structure of the bridge.

[0072] As an embodiment, the design dimension unit is in millimeters, and the telescopic amount is 0 - 160 millimeters. The size of the expansion joint at the beam end gap shall be calculated and determined according to the actual local temperature during installation. The diameter of the embedded steel bars of the first to fourth anchor fittings is 16 millimeters, and the steel bar spacing is 16 - 25 millimeters. For the lintel and the special I-beam used for the lintel limit fixing part, the size can be seen in the attached drawings, and the waterproof caulking material is waterproof caulking asphalt glue. Of course, for expansion joint devices with different size specifications and models, their specific sizes are different, and those in this industry can achieve it through parameter adjustment.

[0073] In this application, the production process of the I-beam lintel 1 is cutting, punching, milling the edge, and welding the overlapping fixing parts, which is the main component connecting the expansion device.

[0074] The production process of the lintel limit fixing part 2 is cutting, punching, and milling the edge. It is the main component fixed on the angle steel fixing part.

[0075] The production processes of the first fixing part 31 and the second fixing part 32 are cutting and leveling. The lintel limit fixing part 2 is fixed on the first fixing part 31 and the second fixing part 32 by welding to form the main skeleton of the expansion device. The mold of the main skeleton is independently developed, which improves the work efficiency and ensures the production quality of the entire main skeleton.

[0076] The production process of the round steel pin shaft 4 is cutting and grinding the edge. It is a component that runs through the entire expansion device and fixes the I-beam lintel on the main skeleton of the expansion device.

[0077] The support seat 5 is a round steel support, and the production process is cutting. It is the main component supporting the I-beam lintel. During installation, the upper horizontal plane of the round steel support is at the same horizontal plane as the upper horizontal plane of the angle steel, ensuring the flatness of the entire expansion device.

[0078] The first anchor fitting 6 is a horizontal anchor steel bar, and the production process is cutting and bending. It is fixed on one side of the angle steel fixing part and forms a protective layer after pouring cement to prevent the connection between the cement and the expansion device from cracking.

[0079] The second anchor fitting 7 is a horizontal anchor steel bar, and the production process is cutting and bending. It is fixed under the angle steel fixing part and welded to the bridge reserved steel bars of the fourth anchor fitting 10. It is the main component supporting the expansion device.

[0080] The third anchor fitting 8 is a horizontal anchor steel bar, and the production process is cutting and bending. It is fixed under the round steel support and welded to the bridge reserved steel bars of the fourth anchor fitting 10. It is the main component supporting the round steel support.

[0081] The production process of the longitudinal anchor 9 is cutting. It is the main component connecting the second anchor 7, the third anchor 8, and the reserved bars of the fourth anchor 10 of the transverse anchor bars, running through the entire underside of the expansion device, so that the entire expansion device and the reserved bars of the fourth anchor 10 of the bridge form an integral whole.

[0082] The steel mesh 12 is not a structure carried when leaving the factory, but the last process of on-site installation. Its purpose is to serve as a protective layer for the cement, preventing cracks from occurring in the cement due to the long-term rolling of vehicles. Moisture entering through the cracks can corrode the expansion device and the steel structure of the bridge.

[0083] The structure of the expansion device is reasonably designed. The entire expansion device is fully integrated with the bridge, without horizontal gaps penetrating the bridge deck, and no vibration will occur, reducing the damage of vibration to vehicles and the bridge. At the same time, the driving comfort of the passengers is improved.

[0084] The installation steps of the expansion joint device of this application include:

[0085] Set embedded parts, and embed the fourth anchor in the bridge concrete layer when pouring the bridge concrete layer;

[0086] Set the first fixing mechanism. The lintel limit fixing piece is fixed on the first fixing piece or the second fixing piece, and the first fixing piece or the second fixing piece is prepared in place and fixed to the first anchor and the second anchor; fix the second anchor to the fourth anchor;

[0087] Set the second fixing mechanism. Prepare the support seat in place and fix it to the third anchor; fix the third anchor to the fourth anchor;

[0088] Set the longitudinal anchor;

[0089] Install the formwork and pour the concrete;

[0090] Cure the concrete and remove the formwork;

[0091] Install the lintel. The I-beam lintel is installed on the first fixing piece or the second fixing piece;

[0092] Pour the waterproof caulking material. The accommodating space between adjacent lintels is filled with a waterproof caulking material, such as asphalt glue.

[0093] The expansion joint device of this application can be processed and transported in parts and assembled into a whole on-site. The large components of the expansion joint device are angle steels, which are also processed and transported in sections and spliced and installed on-site. Therefore, the expansion joint device of this application can complete the installation task smoothly without using large equipment during the transportation and installation process.

[0094] During installation and construction, firstly, the angle steel and the supporting round steel are welded firmly to the embedded steel bars of the expansion joint device in the accurate position, and then the formwork is erected and the concrete is poured. Because the upper space is open and there is no obstruction, it is very convenient to pour, vibrate, plaster, cure and remove the formwork, which is also conducive to controlling the construction quality.

[0095] In order to improve mass and industrialized production, ensure the accuracy of construction and the yield rate of assembly, improve production efficiency and installation efficiency, the expansion joint device of the present application is currently mainly processed and produced in the production plant to complete the processing of all components and the assembly of some components, and the finished products or semi-finished products are transported to the construction site, where they can be completed through simple assembly and installation.

[0096] When leaving the factory, the I-beam of the lintel limit fixing piece and the steel bar of the first anchoring piece are welded to the angle steel of the first fixing piece or the second fixing piece, and are prefabricated to form an integral body.

[0097] Key points for construction of the expansion joint device of this application.

[0098] Cutting and grooving: Before grooving, the lines should be laid out and marked with tape. The grooving width should match the reserved groove as much as possible. The slits on both sides should be straight and parallel to each other. When cracks are found in the asphalt pavement near the slits, the groove width should be increased to remove the cracks. The filler in the groove needs to be cleaned and the loose concrete should also be chiseled out.

[0099] Installation of expansion joint angle steel: The installation position of the expansion joint angle steel must be accurate, the center line of the expansion joint device should be consistent with the center line of the slot as much as possible, the straightness error of the expansion joint device should not exceed plus or minus 2 mm, and the height error should not exceed plus or minus 2 mm. After each section of the expansion joint angle steel is accurately positioned, it should be welded and fixed with the anchor steel bar.

[0100] Install steel bars: The longitudinal steel bars should be connected to the expansion joint device steel bars and the embedded bars at the beam ends by electric welding.

[0101] Installing the formwork: The bottom formwork should be installed firmly, the gap should be tightly fitted to prevent leakage, and the center line of the middle vertical formwork should coincide with the center line of the expansion joint device and be smooth.

[0102] Concrete pouring: Before pouring concrete, the expansion joint device groove should be cleaned. The concrete grade should be no less than 50# steel fiber concrete with a slump of 8-10 cm. The concrete must be vibrated and compacted, and it should be smoothed and pressed in time after pouring. After the concrete is initially set, it should be covered with plastic film for curing. The formwork can be removed after curing for 48 hours.

[0103] Installation of I-beams: I-beams must be installed flat, and the top surface of each I-beam must not be higher than the bridge deck.

[0104] Pouring waterproof glue: The waterproof glue should be of a variety that does not harden in winter. During pouring, tools should be used to hold it to prevent it from dripping onto the bridge deck and expansion joint device, causing pollution.

[0105] After the installation of the I-beams is completed, the top surface of the steel components of the expansion joint device must be painted.

[0106] Curing: After the installation is completed, watering the concrete for curing should be continued.

[0107] The main advantages of the expansion joint device of this application.

[0108] No vibration. Since this product does not have a transverse joint running through the entire bridge deck and the I-beams are arranged longitudinally along the bridge, when a vehicle passes, one wheel will press on 6 to 7 I-beams, so the vibration is weak, thus eliminating the adverse factors of vehicle damage to the expansion joint device, eliminating the adverse effects of vibration on the vehicle, and at the same time improving the driving comfort of the passengers and drivers.

[0109] High load-bearing capacity. The main load-bearing component of the expansion joint device of this application is the I-beam lintel. According to calculations, a 160-type expansion joint device made of I-beams with a height of 48 mm can carry a load-carrying vehicle of more than a thousand tons (referring to a 6-axle load-carrying vehicle). The calculation table of the load-bearing capacity of the I-beams can be seen in the attached drawings. The angle steel and support round steel of the expansion joint device are buried in the concrete. By increasing the concrete grade, if the concrete cannot be crushed, the expansion joint device will not be damaged. The I-beam lintel 1 presses on the angle steel, and one end of it is welded to the angle steel by electric welding. When the vehicle passes, the weld is not under much stress and is not easily damaged. When the temperature drops and the superstructure of the bridge shrinks and the expansion joint device stretches, the weld between the I-beam and the angle steel bears the tensile stress. Since there is no connection between the I-beam lintels, when they move relative to each other, only the frictional resistance between the I-beam and the waterproof rubber material is generated. Compared with the tensile resistance of the weld, this frictional resistance is very small and cannot cause damage to the I-beam lintel 1. Since this expansion joint device has a simple structure and no vulnerable parts, its durability is very high.

[0110] Low possibility of damage. The fundamental reason for the damage of the traditional Maurer expansion joint is that hard objects are stuffed into the joint, causing damage. The expansion joint device of this application has no joint, so the probability of damage caused by this situation is very low. This expansion joint device has two rows of small pits. During construction, the pits are filled with waterproof glue. During operation, even if the glue is not full, it will be filled with sand and soil brought by the vehicle, and the possibility of stuffing hard objects is very small. Even if small stones are stuffed in, they will be crushed by the I-beams and will not cause damage to the expansion joint device. Only when iron blocks of appropriate size are stuffed in, there is a possibility of causing harm to individual I-beams, and the probability of this situation occurring is very low. Even if it occurs, only one I-beam can be damaged and it will not cause damage to the entire expansion joint device.

[0111] Easy to maintain. The vulnerable part of the expansion joint device of this application is the I-beam lintel. Each I-beam works independently. If a certain I-beam is damaged, it can be replaced very conveniently without affecting other components.

[0112] Convenient installation and construction operation. The expansion joint device of this application is processed and transported in parts and assembled into a whole on site. The large components of the expansion joint device are angle steels, which are also processed and transported in sections and spliced and installed on site. Therefore, the expansion joint device of this application can complete the installation task smoothly without using large-scale equipment during the transportation and installation process. During installation and construction, first weld the angle steel and the bearing round steel firmly to the embedded steel bars of the expansion joint device at the accurate positions, and then set up the formwork and pour the concrete. Because the upper space is open and there is no obstruction, it is very convenient to pour, vibrate, plaster, cure, and remove the formwork of the concrete, which is also beneficial to controlling the construction quality.

[0113] Rational structure and material saving. For flexural members, the I-shaped cross-section is the most reasonable material cross-section. The main component of the expansion joint device of this application, the I-beam lintel, adopts the I-shaped cross-section. For the I-beam lintel, it saves 50% of the materials compared with the solid plate-shaped cross-section. The expansion joint device of this application also cleverly solves the problem of water leakage of the expansion joint device in a simple way, and at the same time enhances the integrity of the expansion joint device.

[0114] The expansion joint device of this application relatively perfectly solves other problems such as vibration, water leakage, easy damage, and difficult installation and construction.

[0115] For those of ordinary skill in the art, the above embodiments of the present invention have been shown and described. Regarding the realization of the above-mentioned functional technical features, there is no difficulty in the aspects of program programming and technical operation realization. It can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic joint device, characterized in that, The expansion joint device is arranged on the bridge concrete layer and includes a first bridge body and a second bridge body. A through expansion joint is arranged between the first bridge body and the second bridge body; the expansion joint penetrates through the bridge concrete layer; A first placement area is arranged on the top surface of the first bridge body close to the expansion joint, and a first fixing member is arranged in the first placement area; a second placement area is arranged on the top surface of the second bridge body close to the expansion joint, and a second fixing member is arranged in the second placement area; a joint covering member is spanned on the upper parts of the first fixing member and the second fixing member, and the joint covering member covers the expansion joint; the upper surface of the joint covering member is flush with the upper surface of the bridge; The joint covering member includes a lintel and a lintel limit fixing member; a plurality of lintel limit fixing members and lintels are fixedly arranged at intervals on the first fixing member, and a plurality of lintels and lintel limit fixing members are fixedly arranged at intervals on the second fixing member; one end of the lintel is fixedly connected to the first fixing member or the second fixing member, and the other end is free to move; the free end of the lintel extends and covers the expansion joint; the lintel limit fixing member on each first fixing member is arranged opposite to a lintel on the second fixing member, and the lintel on each first fixing member is arranged opposite to a lintel limit fixing member on the second fixing member; the first fixing member or the second fixing member is respectively connected to a first fixing mechanism arranged in the first bridge body and the second bridge body; The lintel is connected to a second fixing mechanism arranged in the first bridge body and the second bridge body; The lintels and the lintel limit fixing members on the first fixing member are sequentially connected by a pin shaft; the lintels and the lintel limit fixing members on the second fixing member are sequentially connected by a pin shaft; The lintel limit fixing members and lintels on the first fixing member and the lintels and lintel limit fixing members on the second fixing member are cooperatively arranged to form a plurality of groups of juxtaposed joint covering members, and an accommodation space is formed between the lintels in adjacent joint covering members, and a waterproof caulking material is filled in the accommodation space.

2. The expansion joint device according to claim 1, characterized in that, The first fixing member and the second fixing member are an integral structure along the length direction of the expansion joint; or, the first fixing member and the second fixing member are a segmented structure along the length direction of the expansion joint.

3. A telescopic joint device according to claim 1, characterized in that, The lintel and the lintel limit fixing member are I-beam members; the first fixing member and the second fixing member are angle steel members.

4. A telescopic joint device according to claim 1, characterized in that, The first fixing mechanism includes a first anchor and a second anchor. The first anchor is used to restrict the first fixing member or the second fixing member in the vertical direction of the expansion joint; the second anchor is used to restrict the first fixing member or the second fixing member in the vertical direction of the expansion joint; the second fixing mechanism includes a support seat and a third anchor. The support seat is used to support the lintel in the length direction of the expansion joint; the third anchor is used to restrict the support seat in the vertical direction of the expansion joint; longitudinal anchors are arranged at the first anchor, the second anchor, and the third anchor, and the longitudinal anchors are fixedly connected to the first anchor, the second anchor, and the third anchor.

5. The expansion joint device according to claim 4, characterized in that The expansion joint device further includes a fourth anchor, and a part of the fourth anchor is embedded in the bridge concrete layer; part or all of the first anchor, the second anchor, and the third anchor are fixedly connected to the fourth anchor; the expansion joint device forms an integral body with the bridge concrete layer through pouring.

6. The expansion joint device according to claim 1, characterized in that, Reinforcement mesh is also provided at the first fixing member and the second fixing member.

7. A construction method for an expansion joint device, using the expansion joint device as described in claim 5, characterized in that, Its construction steps include: Setting embedded parts, and embedding the fourth anchor in the bridge concrete layer when pouring the bridge concrete layer; Setting a first fixing mechanism, fixing the lintel limit fixing member on the first fixing member or the second fixing member, preparing the first fixing member or the second fixing member in place, and fixing it to the first anchor and the second anchor; setting the second anchor to be fixed to the fourth anchor; Setting a second fixing mechanism, preparing the support seat in place and fixing it to the third anchor; setting the third anchor to be fixed to the fourth anchor; Setting longitudinal anchors; Installing formwork and pouring concrete; Curing the concrete and removing the formwork; Installing the lintel, and installing the I-beam lintel on the first fixing member or the second fixing member; Pouring a waterproof caulking material, and filling the accommodation space between adjacent lintels with the waterproof caulking material.

8. The construction method of an expansion joint device according to claim 7, characterized in that, The I-beam of the lintel limit fixing member and the steel bar of the first anchor are welded to the angle steel of the first fixing member or the second fixing member, and prefabrication is completed to form an integral body.

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