CN112252176A - Expansion joint device and construction method thereof - Google Patents
Expansion joint device and construction method thereof Download PDFInfo
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- CN112252176A CN112252176A CN202011243699.6A CN202011243699A CN112252176A CN 112252176 A CN112252176 A CN 112252176A CN 202011243699 A CN202011243699 A CN 202011243699A CN 112252176 A CN112252176 A CN 112252176A
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- fixing
- lintel
- piece
- expansion joint
- fixing piece
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention relates to the technical field of expansion joint construction, in particular to an expansion joint device. The bridge is arranged on a bridge concrete layer and comprises a first bridge body, a second bridge body and an expansion joint; the first bridge body is provided with a first fixing piece; the second bridge body is provided with a second fixing piece; the upper parts of the first fixing piece and the second fixing piece are provided with lap joint pieces in a spanning manner; the lap joint piece comprises a lintel and a lintel limiting and fixing piece; the first fixing piece and the second fixing piece are alternately and fixedly provided with a plurality of lintel limiting fixing pieces and lintels; one end of the lintel is fixedly connected with the first fixing piece or the second fixing piece, and the other end of the lintel can move freely; the first fixing piece or the second fixing piece is respectively connected with a first fixing mechanism arranged in the first bridge body and the second bridge body; the lintel is connected with a second fixing mechanism arranged in the first bridge body and the second bridge body. The invention has the advantages of small vibration, strong bearing capacity and convenient construction.
Description
Technical Field
The invention relates to the technical field of expansion joint construction, in particular to an expansion joint device.
Background
The expansion joint, which is a building expansion joint, is a structural joint provided at an appropriate position along a building or a construction joint direction of the building in order to prevent a structure from being cracked or damaged due to a change in temperature (thermal expansion or contraction) of the building. The expansion joint divides the building component above the foundation into two independent parts, so that the building or the structure can horizontally expand and contract along the long direction.
In buildings such as highways, expansion joints are very common. Continuous bridge decks also tend to crack in the pavement of the deck. The method is to pre-cut the bridge surface, set the joint, or use the softer paving layer to absorb the crack, or install the small-sized telescopic device to solve the problem. The combination of the telescopic device and the beam body into a whole with equal strength is undoubtedly an important means for improving the use efficiency of the telescopic device. The fixing and combination of the bridge expansion joint device and the bridge deck plate are often insufficient, the effect is not ideal, and the whole telescopic member is easy to generate local internal stress.
Disclosure of Invention
The invention aims to provide an expansion joint device which is small in vibration, strong in bearing capacity and convenient to construct.
In order to achieve the purpose, the invention provides the following technical scheme:
an expansion joint device is arranged on a bridge concrete layer and comprises a first bridge body and a second bridge body, wherein a penetrating 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 mounting area is arranged on the top surface, close to the expansion joint, of the first bridge body, and a first fixing piece is arranged in the first mounting area; a second mounting area is arranged on the top surface, close to the expansion joint, of the second bridge body, and a second fixing piece is arranged in the second mounting area; the upper parts of the first fixing piece and the second fixing piece are provided with seam overlapping pieces in a spanning mode, and the seam overlapping pieces cover the expansion joint; the upper surface of the lap joint piece is flush with the upper surface of the bridge;
the lap joint piece comprises a lintel and a lintel limiting and fixing piece; the first fixing piece is alternately and fixedly provided with a plurality of lintel limiting fixing pieces and lintels, and the second fixing piece is alternately and fixedly provided with a plurality of lintels and lintel limiting fixing pieces; one end of the lintel is fixedly connected with the first fixing piece or the second fixing piece, and the other end of the lintel can move freely; the free end of the lintel extends and covers the expansion joint; the lintel limiting fixing piece on each first fixing piece is arranged opposite to one lintel on the second fixing piece, and the lintel on each first fixing piece is arranged opposite to one lintel limiting fixing piece on the second fixing piece;
the first fixing piece or the second fixing piece is respectively connected with a first fixing mechanism arranged in the first bridge body and the second bridge body;
the lintel is connected with a second fixing mechanism arranged in the first bridge body and the second bridge body.
Further, the lintel on the first fixing piece and the lintel limiting fixing piece are sequentially connected through a pin shaft; the lintel and the lintel limiting and fixing piece on the second fixing piece are sequentially connected through a pin shaft.
Furthermore, the first fixing piece and the second fixing piece are of an integral structure along the length direction of the expansion joint; or the first fixing piece and the second fixing piece are of a segmented structure along the length direction of the expansion joint.
Furthermore, the lintel limiting fixing piece and the lintel on the first fixing piece and the lintel limiting fixing piece on the second fixing piece are matched to form a plurality of groups of parallel joint pieces, wherein an accommodating space is formed between the lintels in the adjacent joint pieces, and the accommodating space is filled with waterproof crack pouring materials.
Furthermore, the waterproof crack pouring material is waterproof crack pouring asphalt cement.
Further, the lintel and the lintel limiting and fixing part are I-shaped steel components; the first fixing piece and the second fixing piece are angle steel components.
Further, the first fixing mechanism comprises a first anchoring piece and a second anchoring piece, and the first anchoring piece is used for constraining the first fixing piece or the second fixing piece along the vertical direction of the expansion joint; the second anchoring piece is used for vertically restraining the first fixing piece or the second fixing piece along the expansion joint.
Further, the second fixing mechanism comprises a supporting seat and a third anchoring piece, and the supporting seat is used for supporting the lintel along the length direction of the expansion joint; the third anchoring piece is used for restraining the supporting seat along the vertical direction of the expansion joint.
Furthermore, longitudinal anchoring pieces along the length direction of the expansion seam are arranged at the first anchoring piece, the second anchoring piece and the third anchoring piece, and the longitudinal anchoring pieces are fixedly connected with the first anchoring piece, the second anchoring piece and the third anchoring piece.
Furthermore, the expansion joint device also comprises a fourth anchoring piece, and the fourth anchoring piece is partially embedded in the bridge concrete layer; part or all of the first anchoring piece, the second anchoring piece and the third anchoring piece are fixedly connected with the fourth anchoring piece; the expansion joint device is integrated with the bridge concrete layer through pouring.
A construction method of an expansion joint device comprises the following construction steps:
arranging an embedded part, and embedding the fourth anchoring part in the bridge concrete layer when the bridge concrete layer is poured;
arranging a first fixing mechanism, fixing the lintel limiting fixing piece on the first fixing piece or the second fixing piece, preparing the first fixing piece or the second fixing piece in place, and fixing the first fixing piece or the second fixing piece with the first anchoring piece and the second anchoring piece; arranging a second anchoring part and a fourth anchoring part for fixing;
arranging a second fixing mechanism to prepare the support seat in place and fix the support seat with a third anchoring piece; arranging a third anchoring part and a fourth anchoring part for fixing;
arranging a longitudinal anchoring piece;
installing a template and pouring concrete;
curing the concrete and removing the template;
mounting a lintel, wherein the I-steel lintel is mounted on the first fixing piece or the second fixing piece;
and (4) pouring waterproof crack pouring materials, wherein the accommodating space between the adjacent lintels is filled with the waterproof crack pouring materials.
Furthermore, the joist steel and the first anchoring part steel bar of the lintel limiting fixing part are welded on the first fixing part or the second fixing part steel bar, and are prefabricated and integrated.
The beneficial effect of this application:
this application vibration is little to eliminated the vehicle and destroyed the adverse factor at expansion joint device, also eliminated the adverse effect of vibration to the vehicle, improved driver and crew's driving comfort level simultaneously.
The application provides an expansion joint device's main load-bearing member is the I-steel lintel, and bearing capacity is strong.
The expansion joint device has a simple structure and no easily damaged parts, so that the expansion joint device has very high durability. The application discloses expansion joint device does not have the seam, and the probability of destruction is very low.
The utility model provides an easily damaged part of expansion joint device is the I-steel lintel, and every I-steel all is independent work, if certain I-steel is destroyed, can be very convenient change, does not have the influence to other parts.
The application discloses expansion joint device installation construction convenient operation. The parts are processed and transported dispersedly, and are assembled into a whole on site without using large-scale equipment.
The application discloses expansion joint device is rational in infrastructure, material saving.
Drawings
Fig. 1 is a schematic view of the structure in the horizontal direction of the present application.
Fig. 2 is a schematic sectional view of fig. 1-1 of the present application.
Fig. 3 is a schematic diagram of a side-by-side structure of the lintel in the present application.
Fig. 4 is a schematic cross-sectional structure diagram of a lintel i-steel in the present application.
Fig. 5 is a schematic structural and dimensional view of one embodiment of the h-beam of the present application.
Fig. 6 is a schematic structural diagram of an embodiment of an i-steel of a lintel limiting and fixing part in the application.
Fig. 7 is a schematic view of a first fixing member structure and a size structure according to the present application.
Fig. 8a, 8b, 8c, and 8d are structural and dimensional diagrams of a first anchor, a second anchor, a third anchor, and a fourth anchor according to the present application.
Fig. 9 is a calculation representation of the bearing capacity of the i-steel in the present application.
Fig. 10 is another schematic view of the cross-sectional structure 1-1 of fig. 1 of the present application.
Wherein:
Lintel limiting and fixing part 2
First fixing member 31
Supporting seat 5
First anchor member 6
Second anchor 7
Waterproof crack pouring material 11
A mesh of reinforcing bars 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An expansion joint device is arranged on a bridge concrete layer and comprises a first bridge body and a second bridge body, wherein a penetrating 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 mounting area is arranged on the top surface of the first bridge body close to the expansion joint, and a first fixing piece 31 is arranged in the first mounting area; a second mounting area is arranged on the top surface, close to the expansion joint, of the second bridge body, and a second fixing piece 32 is arranged in the second mounting area; the upper parts of the first fixing piece 31 and the second fixing piece 32 are provided with seam overlapping pieces in a spanning mode, and the seam overlapping pieces cover the expansion joint; the upper surface of the lap joint piece is flush with the upper surface of the bridge.
The lap joint piece comprises a lintel 1 and a lintel limiting and fixing piece 2; a plurality of lintel limiting fixing pieces 2 and lintel 1 are alternately and fixedly arranged on the first fixing piece 31, and a plurality of lintel 1 and lintel limiting fixing pieces 2 are alternately and fixedly arranged on the second fixing piece 32; one end of the lintel 1 is fixedly connected with the first fixing piece 31 or the second fixing piece 32, and the other end can move freely; the free end of the lintel 1 extends and covers the expansion joint; the lintel limiting and fixing part 2 on each first fixing part 31 is arranged opposite to one lintel 1 on the second fixing part 32, and the lintel 1 on each first fixing part 31 is arranged opposite to one lintel limiting and fixing part 2 on the second fixing part 32.
The lintel 1 and the lintel limiting fixing part 2 on the first fixing part 31 are sequentially connected through a pin shaft 4; the lintel 1 and the lintel limiting fixing part 2 on the second fixing part 32 are sequentially connected through a pin shaft 4. Wherein, the first fixing piece 31 and the second fixing piece 32 are of an integral structure along the length direction of the expansion joint; alternatively, the first fixing member 31 and the second fixing member 32 may be a segmented structure along the length direction of the expansion joint.
The lintel 1 and the lintel limiting and fixing part 2 are I-shaped steel members; the first fixing member 31 and the second fixing member 32 are angle iron members.
The lintel limiting fixing piece 2 and the lintel 1 on the first fixing piece 31 and the lintel 1 and the lintel limiting fixing piece 2 on the second fixing piece 32 are matched and arranged into a plurality of groups of joint pieces which are arranged in parallel, wherein an accommodating space is formed between the lintel 1 in the adjacent joint pieces, and the accommodating space is filled with waterproof crack pouring materials 11. The waterproof crack pouring material 11 is waterproof crack pouring asphalt cement.
The first fixing member 31 or the second fixing member 32 is connected to a first fixing mechanism provided in the first bridge body and the second bridge body, respectively. The first fixing mechanism comprises a first anchoring piece 6 and a second anchoring piece 7, wherein the first anchoring piece 6 is used for restraining the first fixing piece 31 or the second fixing piece 32 along the vertical direction of a telescopic seam; the second anchoring member 7 is used to vertically constrain the first fixing member 31 or the second fixing member 32 along the expansion slit.
The lintel 1 is connected with a second fixing mechanism arranged in the first bridge body and the second bridge body. The second fixing mechanism comprises a supporting seat 5 and a third anchoring piece 8, and the supporting seat 5 is used for supporting the lintel 1 along the length direction of the expansion joint; the third anchor 8 is used for restraining the support seat 5 along the vertical direction of the expansion joint. The first anchoring piece 6, the second anchoring piece 7 and the third anchoring piece 8 are provided with longitudinal anchoring pieces 9 along the length direction of the expansion seam, and the longitudinal anchoring pieces 9 are fixedly connected with the first anchoring piece 6, the second anchoring piece 7 and the third anchoring piece 8.
The expansion joint device also comprises a fourth anchoring piece 10, wherein the fourth anchoring piece 10 is partially embedded in the bridge concrete layer; a part or all of the first anchor 6, the second anchor 7 and the third anchor 8 are fixedly connected with the fourth anchor 10; the expansion joint device is integrated with the bridge concrete layer through pouring.
The expansion joint device consists of I-shaped steel lintel 1 which is placed at the upper part of the reserved expansion joint device of the bridge in a staggered mode, a first fixing part 31 and a second fixing part 32 of angle steel which are poured in concrete and used for fixing the I-shaped steel lintel, a limiting fixing part 2 of the I-shaped steel lintel which is welded on the first fixing part 31 and the second fixing part 32 and used for fixing the I-shaped steel lintel, a round steel supporting seat 5 which is poured in concrete and a round steel pin shaft 4. The I-steel is all made of special I-steel with the height of 48mm and the width of 32 mm, and anchoring steel bars are welded on the first fixing piece 31, the second fixing piece 32 and the round steel supporting seat 5 of the angle steel, so that the first fixing piece 31, the second fixing piece 32 and the round steel supporting seat 5 are firmly connected with concrete. When in factory processing, the lintel limiting fixing piece 2 is firmly welded on the first fixing piece 31 and the second fixing piece 32 of the angle steel by electric welding according to the accurate position. When the expansion joint device is installed on site, the first fixing piece 31, the second fixing piece 32 and the round steel supporting seat 5 of the angle steel are firstly welded and connected with the embedded steel bars of the expansion joint device firmly according to accurate positions, then concrete is poured, after the concrete is demoulded, the I-shaped steel lintel 1 is installed, and after the I-shaped steel lintel is installed, the cavity of the I-shaped steel is filled with waterproof glue materials, so that the whole expansion joint device becomes a dense and waterproof integral plate.
And reinforcing steel bar meshes 12 are further arranged at the first fixing piece and the second fixing piece and serve as concrete protective layers. The reinforcing mesh is not a structure brought when leaving a factory, but the last process of field installation, and aims to be used as a concrete protective layer to prevent concrete from generating cracks due to long-time rolling of vehicles, and the cracks enter water to corrode the expansion device and a steel structure of a bridge.
As an example, the unit of the design size is measured by millimeter, and the expansion amount is 0-160 millimeter. The size of the expansion joint of the beam end gap is determined by calculation according to the local actual air temperature during installation. The diameter of the embedded steel bars of the first anchoring piece and the fourth anchoring piece is 16 mm, and the distance between the steel bars is 16-25 mm. The sizes of the special I-shaped steel adopted by the lintel and the lintel limiting and fixing part refer to the attached drawings, and the waterproof crack pouring material is waterproof crack pouring asphalt cement. Certainly, for expansion joint devices with different sizes, specifications and models, the specific sizes are different, and the personnel in the industry can adjust the parameters to realize the expansion joint devices.
In this application, I-steel lintel 1 production flow is cutting, punching, edge milling, welding overlap mounting, is the main part of connecting telescoping device.
The production process of the lintel limiting and fixing part 2 comprises cutting, punching and edge milling. Is a main component fixed on the angle steel fixing piece.
The production process of the first fixing piece 31 and the second fixing piece 32 is cutting and leveling. The lintel limiting and fixing piece 2 is fixed on the first fixing piece 31 and the second fixing piece 32 by welding to form a main framework of the telescopic device. The die of the main framework is independently researched and developed by our company, so that the working efficiency is improved, and the production quality of the whole main framework is also ensured.
The production process of the round steel pin shaft 4 comprises cutting and edging, and the round steel pin shaft is a part penetrating through the whole telescopic device and fixes the I-shaped steel lintel on a main framework of the telescopic device.
The supporting seat 5 is a round steel supporting seat, and the production flow is cutting. The steel angle steel bracket is a main component for supporting an I-shaped steel lintel, and the upper horizontal plane of the round steel bracket and the upper horizontal plane of the angle steel are in the same horizontal plane during installation, so that the flatness of the whole telescopic device is ensured.
The first anchoring part 6 is a transverse anchoring steel bar, and the production flow is cutting and bending. The angle steel fixing piece is fixed on one side of the angle steel fixing piece, and a protective layer is formed after cement is poured, so that the joint of the cement and the telescopic device is prevented from cracking.
The second anchoring part 7 is a transverse anchoring steel bar, and the production process comprises cutting and bending. Is fixed below the angle steel fixing piece, is welded with a bridge reserved rib of a fourth anchoring piece 10, and is a main part for supporting the telescopic device.
The third anchoring part 8 is a transverse anchoring steel bar, and the production flow is cutting and bending. Is fixed below the round steel support, is welded with the reserved rib of the fourth anchoring part 10 bridge, and is a main component for supporting the round steel support.
The longitudinal anchor 9 is produced by cutting. The main part is used for connecting the reserved ribs of the second anchoring part 7, the third anchoring part 8 and the fourth anchoring part 10 of the transverse anchoring steel bar and penetrates through the lower part of the whole telescopic device, so that the whole telescopic device and the reserved ribs of the fourth anchoring part 10 bridge form a whole.
The reinforcing mesh 12 is not a structure taken at the factory, but a last process of field installation, and aims to serve as a protective layer for cement, so that cracks are prevented from being generated due to long-time rolling of a vehicle, and the cracks enter water to corrode the expansion device and a steel structure of a bridge.
The expansion device of our company has reasonable structural design, the whole expansion device is completely combined with the bridge, no gap transversely penetrating through the bridge floor exists, no vibration is generated, the destructive effect of vibration on vehicles and the bridge is reduced, and the driving comfort level of drivers and passengers is improved.
The application provides an expansion joint device, the installation step includes:
arranging an embedded part, and embedding the fourth anchoring part in the bridge concrete layer when the bridge concrete layer is poured;
arranging a first fixing mechanism, fixing the lintel limiting fixing piece on the first fixing piece or the second fixing piece, preparing the first fixing piece or the second fixing piece in place, and fixing the first fixing piece or the second fixing piece with the first anchoring piece and the second anchoring piece; arranging a second anchoring part and a fourth anchoring part for fixing;
arranging a second fixing mechanism to prepare the support seat in place and fix the support seat with a third anchoring piece; arranging a third anchoring part and a fourth anchoring part for fixing;
arranging a longitudinal anchoring piece;
installing a template and pouring concrete;
curing the concrete and removing the template;
mounting a lintel, wherein the I-steel lintel is mounted on the first fixing piece or the second fixing piece;
and (3) pouring waterproof crack pouring materials, wherein the accommodating space between the adjacent lintels is filled with the waterproof crack pouring materials such as asphalt cement.
The utility model provides an expansion joint device can be the part dispersion processing transportation of dividing, assembles into wholly to the scene, and the big part of expansion joint device is the angle steel, and the angle steel also is the segmentation processing transportation, to the scene concatenation installation, consequently, the expansion joint device of this application need not to use the main equipment in the transportation installation, completion installation task just can be smooth.
During installation and construction, firstly, the angle steel and the support round steel are firmly welded with the embedded steel bars of the expansion joint device according to accurate positions, then the template is erected, and concrete is poured. Because the upper space is wide without any shielding, the concrete pouring, the vibrating, the plastering, the health preserving and the form removing are all very convenient, and the construction quality is also favorably controlled.
In order to improve the mass and industrial production, ensure the precision of construction and manufacture and the yield of assembly, improve the production efficiency and improve the installation efficiency, the expansion joint device mainly selects to process and produce in the production plant of our company preferentially at present, completes the processing of all components and the assembly of partial assembly, transports finished products or semi-finished products to the construction site, and can be completed through simple assembly and installation.
When leaving the factory, the lintel limiting fixing part I-steel and the first anchoring part steel bar are welded on the first fixing part or the second fixing part steel bar, and the prefabrication is completed to form a whole.
The utility model provides an expansion joint device construction main points.
Grooving a cutting seam: before slotting, paying off and pasting an adhesive tape as a mark, wherein the width of the slotting should be matched with the reserved slot as much as possible, the slotting on two sides should be straight and parallel to each other, and when a crack is found on the asphalt pavement near the slotting, the width of the slot should be increased, and the crack is cut off. The filler in the groove needs to be cleaned up, and the non-compact concrete needs to be chiseled off.
Installing an angle steel of the expansion joint device: the installation position of the angle steel of the expansion joint device needs to be accurate, the central line of the expansion joint device is matched with the central line of the slot as much as possible, and the height error of the expansion joint device along the straight degree is not more than plus or minus 2 mm and is not more than plus or minus 2 mm. After each section of expansion joint device angle steel is accurately in place, the angle steel is welded and fixed with the anchoring reinforcing steel bar.
Installing a steel bar: the longitudinal steel bars are electrically welded with the steel bars of the expansion joint device and the embedded bars at the beam ends.
Installing a template: the bottom die is firmly installed, the gap fit is tight, the slurry does not leak, and the central line of the middle vertical surface die is smoothly matched with the central line of the expansion joint device.
Pouring concrete: the groove of the expansion joint device is cleaned before concrete is poured, the grade of the concrete is not less than 50# steel fiber concrete, and the slump is 8-10 cm. The concrete needs to be vibrated to be compact, and the concrete needs to be smoothed and polished in time after being poured. And (3) covering a plastic film for curing after the concrete is initially set, and removing the template after 48 hours of curing.
Installing I-shaped steel: the I-steel installation must keep smooth, and every I-steel top surface can not exceed the bridge floor.
Pouring waterproof glue: the waterproof glue is not hardened in winter, and tools are used for holding during pouring, so that pollution caused by dripping on the bridge deck and the expansion joint device is prevented.
And after the I-steel is installed, brushing paint on the top surface of the steel member of the expansion joint device.
Health preserving: and after the installation is finished, the concrete is continuously cured by water.
The expansion joint device of this application main advantage.
And no vibration is generated. Because this product does not link up the horizontal joint of whole bridge floor, and the I-steel is arranged along the longitudinal arrangement of bridge, and 6 to 7I-steels can be pressed to a wheel when the vehicle passes through, consequently vibrate weakly to eliminated the vehicle and destroyed the adverse factor of expansion joint device, also eliminated the adverse effect of vibration to the vehicle, improved driver and crew's driving comfort level simultaneously.
The bearing capacity is high. The application provides an expansion joint device's main load-bearing member is I-steel lintel. According to calculation, the 160-shaped expansion joint device made of the I-steel with the height of 48mm can bear more than thousand tons of trucks (6-axle trucks), and the I-steel bearing capacity is shown in the attached drawing in the calculation table. The angle steel and the support round steel of the expansion joint device are buried in concrete, so that the grade of the concrete is improved, the concrete cannot be crushed, and the expansion joint device cannot be damaged. The I-shaped steel lintel 1 is pressed on the angle steel, one end of the I-shaped steel lintel is welded with the angle steel firmly by electric welding, and when a vehicle passes through, the stress of a welding line is not large and the welding line is not easy to be damaged. When the temperature is reduced, the upper structure of the bridge is contracted, and the expansion joint device is lengthened, the welding seam between the I-steel and the angle steel bears the tensile stress, because the I-steel lintel is not connected with each other, when the I-steel lintel moves mutually, only the I-steel and the waterproof sizing material generate the frictional resistance, and compared with the tensile resistance of the welding seam, the frictional resistance is very small, and the I-steel lintel 1 cannot be damaged. The expansion joint device has simple structure and no vulnerable parts, so that the expansion joint device has very high durability.
The likelihood of damage is low. The root cause of the damage of the traditional capillary expansion joint is the damage caused by hard objects filled in the joint. The utility model provides an expansion joint device does not have the seam, and this kind of condition causes the probability of destruction very low, and this expansion joint device has two rows of little pot holes, all fills up waterproof sizing material in the pot hole during construction, even the sand and soil that the sizing material also can be brought by the vehicle is filled up during the operation, and the possibility of filling in hard thing is very little, even fill in little stone, also can be crowded garrulous by the I-steel, can not cause the destruction to the expansion joint device. Only the iron block with the proper size is plugged into the expansion joint, the damage to the individual I-steel can be caused, the probability of the condition is very low, even if the condition occurs, only one I-steel can be extruded, and the whole expansion joint device cannot be damaged.
Is convenient for maintenance. The utility model provides an easily damaged part of expansion joint device is the I-steel lintel, and every I-steel all is independent work, if certain I-steel is destroyed, can be very convenient change, does not have the influence to other parts.
The installation and construction operation is convenient. The utility model provides an expansion joint device divides spare part dispersion processing transportation, assembles into wholly to the scene, and the big part of expansion joint device is the angle steel, and the angle steel also is segmentation processing transportation, to the installation of scene concatenation, consequently, the expansion joint device of this application need not to use the main equipment in the transportation installation, completion installation task just can be smooth. The angle steel and the support round steel are welded with the embedded steel bars of the expansion joint device firmly according to accurate positions, then the template is erected, and concrete is poured. Because the upper space is wide without any shielding, the concrete pouring, the vibrating, the plastering, the health preserving and the form removing are all very convenient, and the construction quality is also favorably controlled.
Reasonable structure and material saving. For the flexural member, I-shaped section is the most reasonable material section, and the I-shaped steel lintel of the main member of the expansion joint device adopts I-shaped section. As for the I-shaped steel lintel, the material is saved by 50 percent compared with the solid plate section. The expansion joint device of this application still with the ingenious problem of having solved the expansion joint device and leaking of simple method, still strengthened expansion joint device's wholeness simultaneously.
The expansion joint device of this application comparatively perfect has solved vibration, has leaked, damages easily, its problem such as installation construction difficulty.
While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An expansion joint device is characterized in that the expansion joint device is arranged on a bridge concrete layer and comprises a first bridge body and a second bridge body, wherein a penetrating 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 mounting area is arranged on the top surface, close to the expansion joint, of the first bridge body, and a first fixing piece is arranged in the first mounting area; a second mounting area is arranged on the top surface, close to the expansion joint, of the second bridge body, and a second fixing piece is arranged in the second mounting area; the upper parts of the first fixing piece and the second fixing piece are provided with seam overlapping pieces in a spanning mode, and the seam overlapping pieces cover the expansion joint; the upper surface of the lap joint piece is flush with the upper surface of the bridge;
the lap joint piece comprises a lintel and a lintel limiting and fixing piece; the first fixing piece is alternately and fixedly provided with a plurality of lintel limiting fixing pieces and lintels, and the second fixing piece is alternately and fixedly provided with a plurality of lintels and lintel limiting fixing pieces; one end of the lintel is fixedly connected with the first fixing piece or the second fixing piece, and the other end of the lintel can move freely; the free end of the lintel extends and covers the expansion joint; the lintel limiting fixing piece on each first fixing piece is arranged opposite to one lintel on the second fixing piece, and the lintel on each first fixing piece is arranged opposite to one lintel limiting fixing piece on the second fixing piece;
the first fixing piece or the second fixing piece is respectively connected with a first fixing mechanism arranged in the first bridge body and the second bridge body;
the lintel is connected with a second fixing mechanism arranged in the first bridge body and the second bridge body.
2. The expansion joint device according to claim 1, wherein the first fixing member and the second fixing member are of an integral structure along the length direction of the expansion joint; or the first fixing piece and the second fixing piece are of a segmented structure along the length direction of the expansion joint.
3. The expansion joint device according to claim 2, wherein the lintel limiting fixing member and the lintel limiting fixing member on the first fixing member and the lintel limiting fixing member on the second fixing member are matched to form a plurality of groups of the joint pieces arranged side by side, wherein an accommodating space is formed between the lintels in adjacent joint pieces, and the accommodating space is filled with a waterproof crack pouring material; the waterproof crack pouring material is waterproof crack pouring asphalt cement.
4. An expansion joint device according to claim 3, wherein said lintel and said lintel limiting fixture are I-steel members; the first fixing piece and the second fixing piece are angle steel components.
5. The expansion joint device according to claim 1, wherein the first fixing mechanism comprises a first anchoring member and a second anchoring member, the first anchoring member is used for restraining the first fixing member or the second fixing member along the vertical direction of the expansion joint; the second anchoring piece is used for vertically constraining the first fixing piece or the second fixing piece along the expansion joint;
the second fixing mechanism comprises a supporting seat and a third anchoring piece, and the supporting seat is used for supporting the lintel along the length direction of the expansion joint; the third anchoring piece is used for restraining the supporting seat along the vertical direction of the expansion joint;
and the first anchoring piece, the second anchoring piece and the third anchoring piece are provided with longitudinal anchoring pieces along the length direction of the expansion seam, and the longitudinal anchoring pieces are fixedly connected with the first anchoring piece, the second anchoring piece and the third anchoring piece.
6. The expansion joint device according to claim 5, further comprising a fourth anchoring member, wherein the fourth anchoring member is partially embedded in the concrete layer of the bridge; part or all of the first anchoring piece, the second anchoring piece and the third anchoring piece are fixedly connected with the fourth anchoring piece; the expansion joint device is integrated with the bridge concrete layer through pouring.
7. The expansion joint device according to claim 1, wherein a steel mesh is further disposed at the first fixing member and the second fixing member.
8. The expansion joint device according to claim 1, wherein the lintel on the first fixing member and the lintel limiting fixing member are sequentially connected by a pin; the lintel and the lintel limiting and fixing piece on the second fixing piece are sequentially connected through a pin shaft.
9. A construction method of an expansion joint device is characterized by comprising the following construction steps:
arranging an embedded part, and embedding the fourth anchoring part in the bridge concrete layer when the bridge concrete layer is poured;
arranging a first fixing mechanism, fixing the lintel limiting fixing piece on the first fixing piece or the second fixing piece, preparing the first fixing piece or the second fixing piece in place, and fixing the first fixing piece or the second fixing piece with the first anchoring piece and the second anchoring piece; arranging a second anchoring part and a fourth anchoring part for fixing;
arranging a second fixing mechanism to prepare the support seat in place and fix the support seat with a third anchoring piece; arranging a third anchoring part and a fourth anchoring part for fixing;
arranging a longitudinal anchoring piece;
installing a template and pouring concrete;
curing the concrete and removing the template;
mounting a lintel, wherein the I-steel lintel is mounted on the first fixing piece or the second fixing piece;
and (4) pouring waterproof crack pouring materials, wherein the accommodating space between the adjacent lintels is filled with the waterproof crack pouring materials.
10. The construction method of an expansion joint device according to claim 9, wherein the joist steel of the lintel limiting fixing member and the steel bar of the first anchoring member are welded to the angle steel of the first fixing member or the second fixing member, and are prefabricated and integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243699.6A CN112252176A (en) | 2020-11-10 | 2020-11-10 | Expansion joint device and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243699.6A CN112252176A (en) | 2020-11-10 | 2020-11-10 | Expansion joint device and construction method thereof |
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| CN112252176A true CN112252176A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011243699.6A Pending CN112252176A (en) | 2020-11-10 | 2020-11-10 | Expansion joint device and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114703745A (en) * | 2022-04-27 | 2022-07-05 | 广州市北二环交通科技有限公司 | Improved hair-expansion joint device and installation method thereof |
-
2020
- 2020-11-10 CN CN202011243699.6A patent/CN112252176A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114703745A (en) * | 2022-04-27 | 2022-07-05 | 广州市北二环交通科技有限公司 | Improved hair-expansion joint device and installation method thereof |
| CN114703745B (en) * | 2022-04-27 | 2023-10-20 | 广州市北二环交通科技有限公司 | Improved Mao Leshi expansion joint device and installation method thereof |
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