CN215561904U - Quick mounting structure of spring reinforcing filling formula bridge seamless expansion joint - Google Patents
Quick mounting structure of spring reinforcing filling formula bridge seamless expansion joint Download PDFInfo
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- CN215561904U CN215561904U CN202122082667.9U CN202122082667U CN215561904U CN 215561904 U CN215561904 U CN 215561904U CN 202122082667 U CN202122082667 U CN 202122082667U CN 215561904 U CN215561904 U CN 215561904U
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Abstract
The utility model discloses a quick installation structure of a spring-reinforced filling type bridge seamless expansion joint, which is characterized in that an extension spring is used as a telescopic stabilizer, a traction tensioning plate is arranged on one side of an anchoring steel frame, which is close to a bridge telescopic groove opening, a pre-tensioning screw rod is arranged between the anchoring steel frame and the traction tensioning plate, and hooks at two ends of the extension spring are hooked on pins of the two traction tensioning plates; the pre-tensioning screw rod is provided with an adjusting nut, and the adjusting nut is pressed on the anchoring steel frame under the tension of the extension spring. Before filling the elastic sealing layer in the flexible notch of bridge, the accessible revolves to twist adjusting nut, drives and pulls the tensioning plate to draw close in order to carry out pretension to a plurality of extension springs to the anchor steelframe for when the expansion joint is at the shrink minimum gap, extension spring still guarantees certain pulling force, and restriction elastic sealing layer can only produce the compression at the horizontal plane and do not take place to arch and warp. And the structure is simple, and the construction is convenient.
Description
Technical Field
The utility model relates to the technical field of bridge expansion joints, in particular to a quick installation structure for a spring-reinforced filling type bridge seamless expansion joint.
Background
The filling type seamless expansion joints mainly comprise two types of polymer modified asphalt seamless expansion joints (TST) and polyurethane elastic concrete seamless expansion joints in the market at present.
The TST elastoplast body of the seamless expansion joint of the polymer modified asphalt is bonded with the asphalt structure of the pavement only by the polymer modified asphalt, so that peeling damage is easy to occur to cause bonding failure; when the bridge structure retracts due to the reduction of the environmental temperature and the deformation elongation of the gap is increased, the tensile strength of the TST material is low, and the cracking phenomenon is generated. Meanwhile, when the gap of the bridge structure is reduced due to the rise of the environmental temperature, and the TST material is compressed, the bridge structure is easy to be pressed, arched and deformed. On the other hand, polymer modified asphalt has a low modulus of elasticity in compression, and under high frequency vehicle rolling conditions, it takes a certain time for rebound after compression deformation, so that crater is likely to occur, and the crater durability is poor.
The polyurethane elastic concrete seamless expansion joint can be provided with porous angle steel at two ends of the bridge structure, so that the bonding and anchoring of the two ends and the pavement structure are enhanced. Meanwhile, a telescopic stabilizer for preventing the elastic filling material from being pressed to arch and deform is arranged between the porous angle steels. Compare in polymer modified asphalt seamless expansion joint, can avoid elastic material to compress to a certain extent to arch and warp, the expansion joint can not produce too big arch camber, sunken when guaranteeing the vehicle roll over expansion joint both ends, satisfies seamless expansion joint driving flat, does not have the requirement of the noise of jumping the car to a certain extent. However, the telescopic stabilizer and the perforated angle steel are lack of stable and effective connection, the telescopic function of the telescopic stabilizer is difficult to meet the requirement, and the filled elastic material still can generate larger arching deformation when being pressed.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model mainly aims to provide a quick installation structure for a spring-reinforced filling type seamless expansion joint of a bridge, aiming at enabling a telescopic stabilizer to better exert the telescopic function of the telescopic stabilizer.
In order to achieve the purpose, the quick installation structure of the spring-reinforced filling type bridge seamless expansion joint comprises anchor steel frames arranged on a bridge structure at two ends of a bridge expansion notch, an expansion stabilizer arranged between the two anchor steel frames, and an elastic sealing layer wrapping the anchor steel frames and the expansion stabilizer, wherein the elastic sealing layer is filled in the bridge expansion notch;
the bridge expansion and contraction device is characterized by further comprising a traction tensioning plate arranged on one side, close to the bridge expansion and contraction notch, of the anchoring steel frame, a plurality of pre-tensioning screws are arranged on the anchoring steel frame, and first ends of the pre-tensioning screws penetrate out of the anchoring steel frame and then are inserted into the traction tensioning plate;
the telescopic stabilizer is an extension spring, the traction tensioning plate is provided with a boss extending towards the extension spring, the boss is provided with a plurality of pins, and hooks at two ends of the extension spring are hooked on the pins of the two traction tensioning plates;
and an adjusting nut is arranged on the rod body of the pre-tensioning screw rod close to the second end of the pre-tensioning screw rod, and the adjusting nut is pressed on the anchoring steel frame under the tension of the extension spring.
Optionally, a spherical washer is arranged on the pretensioning screw, and the spherical washer is pressed on the anchoring steel frame by the adjusting nut.
Optionally, the anchoring steel frame is U-shaped steel, and a bottom steel body of the U-shaped steel is anchored on a concrete layer of the bridge structure through bolts.
Optionally, the steel bodies on both sides of the U-shaped steel are provided with glue holes.
Optionally, the bridge expansion slot is provided with a seam crossing steel plate, and the seam crossing steel plate comprises a fixed comb tooth steel plate fixed on the bridge structure at two ends of the bridge expansion slot and a movable comb tooth steel plate arranged on the bridge expansion slot.
Optionally, a small channel steel fixed by screws is mounted on the movable comb steel plate.
Optionally, a bottom steel plate is arranged on a concrete layer of the bridge structure, the fixed comb tooth steel plate is fixed on the bottom steel plate through screws, and comb tooth structures on two sides of the movable comb tooth steel plate are pressed on the bottom steel plate.
Optionally, the elastic sealing layer is made of one or more of thermosetting modified epoxy resin, thermosetting polyurethane resin, thermosetting modified silicone resin, thermosetting modified acrylic resin, thermoplastic elastomer and modified asphalt.
According to the utility model, the extension spring is used as the extension stabilizer, the traction tensioning plate is arranged on one side of the anchoring steel frame, which is close to the bridge extension slot opening, a plurality of pre-tensioning screws are arranged on the anchoring steel frame, and the first ends of the pre-tensioning screws penetrate out of the anchoring steel frame and then are inserted into the traction tensioning plate; the traction tensioning plate is provided with a boss extending towards the tension spring, the boss is provided with a plurality of pins, and hooks at two ends of the tension spring are hooked on the pins of the two traction tensioning plates; and the rod body of the pre-tensioning screw rod close to the second end of the pre-tensioning screw rod is provided with an adjusting nut, and the adjusting nut is pressed on the anchoring steel frame under the tension of the extension spring.
Therefore, before the elastic sealing layer wrapping the anchoring steel frame and the telescopic stabilizer is filled in the telescopic slot of the bridge, the theoretical compression (retraction) amount under the condition of the temperature of the installation environment of the expansion joint can be calculated according to relevant specifications, the adjusting nut is screwed, and the extension spring is stretched to be 1-2 times of the theoretical compression (retraction) amount, so that when the expansion joint is retracted to the minimum gap, the extension spring still ensures certain tension, and the elastic sealing layer is limited to be compressed only on the horizontal plane without arching deformation.
Compared with the existing filling type seamless expansion joint, the installation structure provided by the utility model can apply pre-tensioning force to the expansion stabilizer, so that the rigidity of the expansion joint can be improved, and the expansion or tearing crack can be effectively limited; and moreover, the elastic recovery function of the elastic sealing layer can be enhanced, so that the expansion joint can meet various deformation requirements and simultaneously still ensure good rolling wear resistance requirements of the vehicle.
And, draw the stretch-draw board through setting up, realize a plurality of extension spring's pretension through a small amount of pretension screw rod, facilitate for the construction of expansion joint.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of a spring-reinforced filled seamless expansion joint for bridges according to the present invention;
FIG. 2 is a top view of an embodiment of the seamless expansion joint for a spring-reinforced filled bridge according to the present invention;
FIG. 3 is a front view of an anchoring steel frame in an embodiment of the spring-reinforced filling type seamless expansion joint for bridges according to the present invention;
FIG. 4 is a view of an anchoring steel frame in an embodiment of the seamless expansion joint of the spring-reinforced filling bridge according to the present invention;
FIG. 5 is a side view of an anchoring steel frame in an embodiment of the seamless expansion joint of the spring-reinforced infilled bridge of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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.
Referring to fig. 1-5 of the specification, an embodiment of the present invention provides a spring-reinforced filling type seamless expansion joint for a bridge, including an anchoring steel frame 500 disposed on a bridge structure 101 at two ends of an expansion slot 100 of the bridge, wherein the anchoring steel frame 500 is made of U-shaped steel and is fixed by an anchoring bolt 510. A telescopic stabilizer 210 is arranged between the two anchoring steel frames 500, and an elastic sealing layer 200 wrapping the anchoring steel frames 500 and the telescopic stabilizer 210 is filled in the bridge telescopic slot 100. The elastic sealing layer 200 is formed by compositely pouring one or more elastic materials selected from thermosetting modified epoxy resin, thermosetting polyurethane resin, thermosetting modified organic silicon resin, thermosetting modified acrylic resin, thermoplastic elastomer and modified asphalt.
One side of the anchoring steel frame 500 close to the bridge telescopic slot 100 is provided with a traction tensioning plate 530, the anchoring steel frame 500 is provided with a plurality of pre-tensioning screws 510, the first ends of the pre-tensioning screws 510 penetrate out of the anchoring steel frame 500 and then are inserted into the traction tensioning plate 530, and the traction tensioning plate 530 is internally provided with insertion holes 530c for the pre-tensioning screws 510 to be inserted. An adjusting nut (not shown) is provided on the rod body of the pre-tensioning screw 510 near the second end thereof.
The telescopic stabilizer 210 is an extension spring, the traction tension plate 530 has a boss 530a extending toward the extension spring, the boss 530a is provided with a plurality of pin holes 530b, and the number of the pin holes 530b is greater than that of the insertion holes 530 c. A pin 531 is inserted into each pin hole 530b, a portion of the pin 531 is not inserted into the pin hole 530b, and hooks at both ends of the tension spring are hooked on a portion of the pin 531 not inserted into the pin hole 530 b.
The adjusting nut is pressed on the anchoring steel frame 500 under the tension of the tension spring.
Before the elastic sealing layer 200 wrapping the anchoring steel frame 500 and the telescopic stabilizer 210 is filled in the bridge telescopic notch 100, the theoretical compression (retraction) amount under the condition of the temperature of the installation environment of the expansion joint can be calculated according to relevant specifications, the adjusting nut is screwed, and the extension spring is extended to the length 1-2 times of the theoretical compression (retraction) amount, so that when the expansion joint is retracted to the minimum gap, the extension spring still ensures certain tensile force, and the elastic sealing layer 200 is limited to be compressed on the horizontal plane without arching deformation.
Compared with the existing filling type seamless expansion joint, the installation structure provided by the utility model can apply pre-tensioning force to the telescopic stabilizer 210, so that the rigidity of the expansion joint can be improved, and the expansion or tearing crack can be effectively limited; moreover, the elastic recovery function of the elastic sealing layer 200 can be enhanced, so that the expansion joint can meet various deformation requirements and simultaneously still ensure good rolling wear resistance requirements of the vehicle.
And, through setting up pull tension plate 530, realize a plurality of extension spring's pretension through a small amount of pretension screw 510, facilitate for the construction of expansion joint.
Optionally, in this embodiment, an adjusting nut and a spherical washer 521 are provided on the pretensioning screw 510, and the spherical washer 521 is pressed on the anchoring steel frame 500 by the adjusting nut. Therefore, the tension spring is prevented from being distorted and stressed due to the installation and the dislocation of the U-shaped steel at the two ends.
Optionally, in this embodiment, a seam crossing steel plate is disposed on the bridge expansion slot 100, and the seam crossing steel plate includes a fixed comb-tooth steel plate 310 fixed on the bridge structure 101 at two ends of the bridge expansion slot 100 and a movable comb-tooth steel plate 320 disposed across the bridge expansion slot 100 for supporting a seam crossing. Meanwhile, small channel steels 321 fixed by screws are installed on the movable comb tooth steel plates 310, and the seam crossing steel plates are guaranteed to be always in the middle positions after the elastic sealing layer 200 is poured.
Optionally, in this embodiment, a bottom steel plate 400 is disposed on the bridge structure 101 of the bridge expansion slot 100, the fixed comb-tooth steel plate 310 is fixed on the bottom steel plate 400 by screws, and two side comb-tooth structures of the movable comb-tooth steel plate 320 are pressed on the bottom steel plate 400. The bottom steel plate 400 facilitates the sliding of the movable comb-tooth steel plate.
The gap between the bottom steel plate 400 and the bridge structure 101 is filled with self-flowing compact epoxy mortar to form a concrete layer 102 for firmly installing a supporting foundation, and the bottom steel body of the U-shaped steel is fastened on the bottom steel plate 400 through an anchoring bolt 510. The elastic sealing layer 200 wrapping the U-shaped steel and the pavement structure are not easy to generate relative displacement, and the problem of bonding, anchoring and stripping is effectively solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A quick installation structure for a spring-reinforced filling type seamless expansion joint of a bridge comprises anchor steel frames arranged on a bridge structure at two ends of an expansion groove of the bridge, an expansion stabilizer is arranged between the two anchor steel frames, and an elastic sealing layer wrapping the anchor steel frames and the expansion stabilizer is filled in the expansion groove of the bridge; the bridge expansion and contraction device is characterized by further comprising a traction tensioning plate arranged on one side, close to a bridge expansion and contraction notch, of the anchoring steel frame, a plurality of pre-tensioning screws are arranged on the anchoring steel frame, and first ends of the pre-tensioning screws penetrate out of the anchoring steel frame and then are inserted into the traction tensioning plate;
the telescopic stabilizer is an extension spring, the traction tensioning plate is provided with a boss extending towards the extension spring, the boss is provided with a plurality of pins, and hooks at two ends of the extension spring are hooked on the pins of the two traction tensioning plates;
and an adjusting nut is arranged on the rod body of the pre-tensioning screw rod close to the second end of the pre-tensioning screw rod, and the adjusting nut is pressed on the anchoring steel frame under the tension of the extension spring.
2. The structure for rapidly installing a seamless expansion joint of a spring-reinforced filled bridge according to claim 1, wherein the pre-tensioned screw is provided with a spherical washer, and the spherical washer is pressed against the anchoring steel frame by the adjusting nut.
3. The structure for rapidly installing the spring-reinforced filling-type seamless expansion joint of the bridge as claimed in claim 1, wherein the anchoring steel frame is a U-shaped steel, and a bottom steel body of the U-shaped steel is anchored on a concrete layer of the bridge structure through bolts.
4. The quick installation structure for the seamless expansion joint of the spring-reinforced filling type bridge according to claim 3, wherein both side steel bodies of the U-shaped steel are provided with glue passing holes.
5. The quick installation structure for the seamless expansion joint of the spring reinforced filling bridge according to any one of claims 1 to 4, wherein the bridge expansion slot is provided with a seam crossing steel plate, and the seam crossing steel plate comprises a fixed comb-tooth steel plate fixed on the bridge structure at both ends of the bridge expansion slot and a movable comb-tooth steel plate arranged across the bridge expansion slot.
6. The structure for rapidly installing the seamless expansion joint of the spring-reinforced filled bridge according to claim 5, wherein the movable comb-tooth steel plate is provided with small channel steel fixed by screws.
7. The structure for rapidly installing the spring-reinforced filled type seamless expansion joint of the bridge as claimed in claim 5, wherein a bottom steel plate is provided on the concrete layer of the bridge structure, the fixed comb-tooth steel plate is fixed on the bottom steel plate by screws, and the comb-tooth structures on both sides of the movable comb-tooth steel plate are pressed on the bottom steel plate.
8. The structure for rapidly installing the seamless expansion joint of the spring-reinforced filled bridge according to claim 1, wherein the elastic sealing layer is made of one or more of thermosetting modified epoxy resin, thermosetting polyurethane resin, thermosetting modified silicone resin, thermosetting modified acrylic resin, thermoplastic elastomer and modified asphalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122082667.9U CN215561904U (en) | 2021-08-31 | 2021-08-31 | Quick mounting structure of spring reinforcing filling formula bridge seamless expansion joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122082667.9U CN215561904U (en) | 2021-08-31 | 2021-08-31 | Quick mounting structure of spring reinforcing filling formula bridge seamless expansion joint |
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| CN215561904U true CN215561904U (en) | 2022-01-18 |
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| CN202122082667.9U Active CN215561904U (en) | 2021-08-31 | 2021-08-31 | Quick mounting structure of spring reinforcing filling formula bridge seamless expansion joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657871A (en) * | 2022-03-04 | 2022-06-24 | 浙江交工集团股份有限公司 | Assembled seamless expansion joint skeleton |
| CN114673080A (en) * | 2022-04-11 | 2022-06-28 | 四川寰宇富兴科技有限公司 | Novel prefabricated modularized seamless bridge expansion device and construction method thereof |
| CN115171527A (en) * | 2022-06-20 | 2022-10-11 | 昆山国显光电有限公司 | Display panel manufacturing method and display panel |
-
2021
- 2021-08-31 CN CN202122082667.9U patent/CN215561904U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657871A (en) * | 2022-03-04 | 2022-06-24 | 浙江交工集团股份有限公司 | Assembled seamless expansion joint skeleton |
| CN114673080A (en) * | 2022-04-11 | 2022-06-28 | 四川寰宇富兴科技有限公司 | Novel prefabricated modularized seamless bridge expansion device and construction method thereof |
| CN115171527A (en) * | 2022-06-20 | 2022-10-11 | 昆山国显光电有限公司 | Display panel manufacturing method and display panel |
| CN115171527B (en) * | 2022-06-20 | 2023-10-27 | 昆山国显光电有限公司 | Display panel manufacturing method and display panel |
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