CN209975355U

CN209975355U - Large-displacement modularized multidirectional displacement expansion joint

Info

Publication number: CN209975355U
Application number: CN201920271030.4U
Authority: CN
Inventors: 田欣
Original assignee: Tianjin Bridge Technology Development Ltd
Current assignee: Tianjin Bridge Technology Development Ltd
Priority date: 2019-03-04
Filing date: 2019-03-04
Publication date: 2020-01-21
Anticipated expiration: 2029-03-04

Abstract

The utility model relates to a large-displacement modularized multidirectional displacement expansion joint, which comprises a main toothed plate, an auxiliary toothed plate, a first bridge beam body and a second bridge beam body, wherein the bottom surface of the main toothed plate is fixedly connected with one part of the top surface of a transverse displacement plate on the first bridge beam body, the other part of the top surface of the transverse displacement plate and a main tooth are respectively matched and connected with one end of a displacement plate cover plate, the displacement plate cover plate slides transversely relative to the transverse displacement plate and the main toothed plate, the other end of the displacement plate cover plate is fixedly connected with the first bridge beam body, a chute is arranged on the other part of the top surface of the transverse displacement plate, the side edge of the main toothed plate matched with the displacement plate cover plate and the side edge of the chute positioned on the same side with the main toothed plate side are bevel edges, the other side edge of the chute matched with the displacement plate cover plate is a vertical edge, a fixed plate which is matched and connected with the transverse displacement plate and fixed on the first bridge beam body is arranged, the transverse shifting plate slides transversely and/or in the bridge direction relative to the fixed plate. The utility model discloses simple structure can realize under extreme condition that the lateral displacement variation is at least 500 mm.

Description

Large-displacement modularized multidirectional displacement expansion joint

Technical Field

The utility model relates to a bridge building technical field especially relates to a multidirectional expansion joint that shifts of big displacement modularization.

Background

In order to meet the requirement of bridge body deformation, bridge expansion joints are generally arranged between two beam ends of a bridge, between the beam ends and an abutment or on the hinged position of the bridge, and along with the development of road transportation, the road traffic volume and the automobile load are increasingly large, and the requirements on various performances of the expansion of the road bridge are continuously improved.

At present, the bridge expansion joints of the same type only utilize the tooth spacing between the comb teeth to realize the change of the transverse displacement, but the change range of the displacement is small, and for some extreme natural phenomena, such as earthquake, the existing bridge expansion joints can not meet the requirement of the change of the overlarge transverse displacement, the displacement exceeding the rated displacement range of the expansion joints influences the normal work of the bridge expansion joints, and the service life of the bridge expansion joints is reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a simple structure can realize under extreme condition that the lateral displacement variation is at least at the multidirectional expansion joint that shifts of 500 mm's big displacement modularization.

The utility model relates to a large-displacement modularized multidirectional displacement expansion joint, which comprises a main toothed plate and an auxiliary toothed plate, wherein the comb teeth of the main toothed plate and the auxiliary toothed plate are mutually crossed and have a gap,

one end of the main toothed plate is erected on a first bridge girder, the other end of the main toothed plate crosses a gap between the first bridge girder and a second bridge girder and is installed on the second bridge girder, the auxiliary toothed plate is installed on the second bridge girder and is erected on the first bridge girder, the bottom surface of the main toothed plate is fixedly connected with one part of the top surface of the transverse shifting plate, the other part of the top surface of the transverse shifting plate and the main tooth are respectively connected with one end of the shifting plate cover plate in a matched manner, the shifting plate cover plate transversely slides relative to the transverse shifting plate and the main toothed plate, the other end of the shifting plate cover plate is fixedly connected with the first bridge girder, the other part of the top surface of the transverse shifting plate is provided with a sliding groove, and the side edge of the main toothed plate matched with the shifting plate cover plate and the side edge of the main toothed plate on the same side as the side edge of the main toothed plate are bevel edges, the other side edge of the sliding groove matched with the position changing plate cover plate is a vertical edge, a fixing plate which is connected with the position changing plate in a matched mode and fixed on the first bridge body is arranged below the transverse position changing plate, and the transverse position changing plate slides transversely and/or in a bridge direction relative to the fixing plate.

Preferably, the lower extreme of fixed plate is equipped with the case that shifts, the other end of shifting the board apron vertically wears to be equipped with along its horizontal direction interval and extends to a plurality of first bolts that shift the case, every it is equipped with powerful spring to lie in case department's cover that shifts on the first bolt, powerful spring's top and fixed plate fixed connection.

In any of the above schemes, preferably, each of the first bolts is sleeved with a sleeve, and two ends of the sleeve are respectively abutted to the shifting plate cover plate and the fixing plate.

In any of the above aspects, preferably, stoppers are provided at both end portions in the lateral direction of the chute.

In any of the above schemes, preferably, the included angle between the bevel edge and the vertical plane is 1-3 degrees.

In any one of the above schemes, preferably, the bottom surface of the transverse shifting plate along the transverse direction thereof is sequentially provided with a first inclined surface and a first horizontal surface from the center to both ends, the top surface of the fixing plate is sequentially provided with a second inclined surface and a second horizontal surface matched with the bottom surface of the transverse shifting plate from the center to both ends along the transverse direction thereof, and each corner of the transverse shifting plate is provided with a chamfer.

In any of the above schemes, preferably, the parts of the transverse shifting plate in contact with the shifting plate cover plate and the parts of the fixing plate and the first bridge body in contact with the transverse shifting plate are provided with tetrafluoro plates.

In any of the above schemes, preferably, the contact parts of the transverse shifting plate, the fixed plate and the first bridge girder body are provided with stainless steel plates.

In any of the above schemes, preferably, the first bridge girder and the second bridge girder are both provided with embedded ribs and anchor rings, and the second bridge girder is provided with a plurality of second bolts at intervals along the transverse direction thereof.

In any of the above schemes, preferably, a rubber water stop is arranged at a gap between the first bridge beam body and the second bridge beam body.

Compared with the prior art, the utility model has the advantages and beneficial effects do:

1. through setting up the structure that fixed plate and the relative horizontal displacement board lateral sliding of displacement board apron difference made the expansion joint can realize big lateral displacement variation, and its lateral displacement variation is 500mm at least, is applicable to the demand that most of bridge displacement change and the demand that the displacement that arouses under extreme circumstances changes, guarantees the anti disaster ability and the fastness of bridge under extreme circumstances such as earthquake.

2. The side edge of the main gear plate matched with the position changing plate cover plate and the side edge of the sliding groove positioned on the same side with the side edge of the main gear plate are bevel edges, and the bevel edges are arranged to facilitate the position changing plate cover plate to be rapidly installed in a matched manner with the transverse position changing plate and the main gear plate on one hand, limit the tilting of the position changing plate cover plate on the other hand and increase the stability and firmness of the position changing structure; the other side of the sliding groove matched with the shifting plate cover plate is a vertical side, the arrangement of the vertical side can transmit the force of the main toothed plate shifting to the direction along the bridge, and the expansion joint can realize the expansion change along the displacement of the bridge to the direction.

3. Through applying the vertical power that shifts to the board apron that shifts, the board apron that shifts transmits the power that shifts vertically to sleeve, fixed plate, powerful spring in proper order, makes the board apron that shifts reciprocate from this, realizes vertical rotation. The arrangement of the deflection box enables the first bolt to be isolated from concrete, the powerful spring is protected from being filled with the concrete, and the telescopic performance of the powerful spring is guaranteed. The screw thread of telescopic setting on to first bolt has the guard action to and strengthen the structure steadiness between shifting board apron, fixed plate and the first bridge roof beam body. In addition, transversely be provided with a plurality of expansion joint units side by side according to the width size of actual bridge, when the expansion joint takes place the lateral displacement and changes, can appear that first bridge roof beam body drives the board apron that shifts from the horizontal migration of one of them expansion joint unit to next expansion joint unit, through being equipped with powerful spring, can make the board apron that shifts upwarp slightly upwards, guarantee that the board apron that shifts can insert the intracavity that shifts of adjacent expansion joint unit smoothly, the horizontal smooth and easy and no card that slides, the jamming phenomenon appears when the board apron that prevents to appear shifting slides at adjacent expansion joint unit, lead to the expansion joint overall structure the fracture condition to appear.

4. Through the design method of adopting the decomposition force, the horizontal force that the expansion joint received is born by horizontal displacement board and displacement board apron etc. and consequently first bolt does not bear horizontal shear force with the second bolt, only bears vertical power, therefore the dangerous condition that the bolt can not take place to be sheared, and the expansion joint can accomplish to have the same life with the concrete. The expansion joint structure is exquisite simple, and it is easy simple to maintain the change, can realize accomplishing the maintenance and the change of expansion joint under the condition of not interrupting the traffic.

5. Through being equipped with the dog along the ascending both ends tip of spout transverse direction, have a limiting displacement effect to the board apron that shifts, prevent that the expansion joint from surpassing the scope that shifts when lateral sliding from resulting in overall structure to damage.

6. The structure enables the transverse displacement plate and the fixed plate to realize automatic return under the interaction of the first inclined plane and the second inclined plane after transverse displacement. Each corner of horizontal displacement board is equipped with the chamfer, and the expansion joint of being convenient for is when carrying out big lateral displacement motion, and horizontal displacement board can insert the intracavity that shifts of adjacent expansion joint unit smoothly.

The utility model discloses a large displacement modularization multidirectional expansion joint that shifts is explained further below with the accompanying drawing.

Drawings

FIG. 1 is a top view of the large displacement modular multidirectional displacement expansion joint of the present invention;

FIG. 2 is a sectional structure view of the large displacement modular multi-directional displacement expansion joint of the present invention;

FIG. 3 is a sectional view in the direction of A-A in FIG. 2;

FIG. 4 is a sectional view in the direction B-B of FIG. 2;

FIG. 5 is a schematic view of the lateral displacement of the large displacement modular multidirectional displacement expansion joint of the present invention;

wherein: 1. an auxiliary toothed plate; 2. a main toothed plate; 3. a transverse shifting plate; 31. a first inclined plane; 32. a first horizontal plane; 33. chamfering; 4. a shifting plate cover plate; 41. a bevel edge; 42. a vertical side; 5. a first bolt; 6. a sleeve; 7. a fixing plate; 71. a second inclined plane; 72. a second horizontal plane; 8. a strong spring; 9. a deflection box; 10. an anchor ring; 11. a first bridge beam body; 12. a rubber waterstop; 13. a second bridge beam body; 14. a second bolt; 15. a stopper; 16. a tetrafluoro plate; 17. a stainless steel plate; 18. a deflection cavity.

Detailed Description

As shown in figures 1-5, the utility model relates to a large displacement modularization multi-directional displacement expansion joint, which comprises a main toothed plate 2 and an auxiliary toothed plate 1, wherein the comb teeth of the main toothed plate 2 and the auxiliary toothed plate 1 are crossed and have a gap, one end of the main toothed plate 2 is arranged on a first bridge beam body 11, the other end of the main toothed plate crosses the gap between the first bridge beam body 11 and a second bridge beam body 13 and is arranged on the second bridge beam body 13, the auxiliary toothed plate 1 is arranged on the second bridge beam body 13, the bottom surface of the main toothed plate 2 arranged on the first bridge beam body 11 is fixedly connected with one part of the top surface of a transverse displacement plate 3, the other part and the main teeth of the top surface of the transverse displacement plate 3 are respectively matched and connected with one end of a displacement plate cover plate 4, the main toothed plate 4 slides transversely relative to the transverse displacement plate 3 and the main toothed plate 2, the other end of the displacement plate cover plate 4 is fixedly connected with the first bridge beam body 11, the other part of the top surface of the transverse displacement plate 3 is provided with a sliding chute, the side of the main toothed plate 2 matched with the shifting plate cover plate 4 and the side of the sliding groove positioned on the same side with the side of the main toothed plate 2 are bevel edges 41, the other side of the sliding groove matched with the shifting plate cover plate 4 is a vertical edge 42, a fixing plate 7 which is matched with the shifting plate 3 and is connected with the shifting plate and fixed on the first bridge beam body 11 is arranged below the shifting plate 3, and the shifting plate 3 slides transversely and/or in bridge direction relative to the fixing plate 7.

In the embodiment, the transverse displacement and the bridge-direction displacement can be changed, specifically, when the transverse displacement of the expansion joint changes, the first bridge beam body 11 drives the fixed plate 7 and the displacement plate cover plate 4 respectively, the fixed plate 7 and the displacement plate cover plate 4 respectively slide transversely relative to the transverse displacement plate 3, and at the moment, the transverse displacement plate 3 and the main toothed plate 2 are in a relatively static state; the expansion joint is realized through the cross motion between main pinion rack 2 and the vice pinion rack 1 in the same direction as the bridge to the displacement, and when it took place to change along the bridge to the displacement, first bridge beam body 11 drove fixed plate 7 respectively and shifted board apron 4, shifted board apron 4 through with transversely shift the spout cooperation on the board 3 and be connected to drive horizontal shift board 3 in proper order, 2 bridges of main pinion rack are to the displacement, simultaneously, have the relative displacement change between horizontal shift board 3 and the fixed plate 7.

In this embodiment, through setting up the structure that fixed plate 7 and displacement board apron 4 transversely slided relative to the transverse displacement board 3 respectively, make the expansion joint can realize big transverse displacement variation, its transverse displacement variation is at least 500mm, is applicable to most of bridge displacement change's demand and the demand of the displacement change that arouses under extreme circumstances, guarantees the disaster resistance ability and the fastness of bridge under extreme circumstances such as earthquake. The side edge of the main toothed plate 2 matched with the shifting plate cover plate 4 and the side edge of the sliding chute positioned on the same side as the side edge of the main toothed plate 2 are bevel edges 41, and the arrangement of the bevel edges 41 is convenient for the shifting plate cover plate 4 to be rapidly installed in a matched manner with the transverse shifting plate 3 and the main toothed plate 2 on one hand, and limits the tilting of the shifting plate cover plate 4 on the other hand, so that the stability and firmness of a shifting structure are improved; another side of the spout that 4 complex of board apron that shifts is vertical limit 42 with shifting, and the setting up of vertical limit 42 can transmit the power that main pinion rack 2 shifted to the direction along the bridge, realizes that the expansion joint changes to the displacement of direction along the bridge.

Further, the lower extreme of fixed plate 7 is equipped with the case 9 that shifts, and the other end of the board apron 4 that shifts is vertically worn to be equipped with along its horizontal direction interval and is extended to a plurality of first bolts 5 that shift case 9, and it is equipped with powerful spring 8 to lie in the case 9 department cover that shifts on every first bolt 5, powerful spring 8's top and fixed plate 7 fixed connection. Every first bolt 5 goes up the cover and is equipped with sleeve 6, and the both ends of sleeve 6 respectively with shift plate apron 4, fixed plate 7 butt.

This embodiment can realize vertical rotation through adopting above-mentioned structure, and is concrete, through applying the power that vertical shifted to shifting board apron 4, the power that shifts board apron 4 and vertically shifted transmits sleeve 6, fixed plate 7, powerful spring 8 in proper order, makes shifting board apron 4 reciprocate from this, realizes vertical rotation. The arrangement of the deflection box 9 enables the first bolt 5 to be isolated from concrete, protects the strong spring 8 from being filled with concrete, and ensures the telescopic performance of the strong spring 8. The sleeve 6 is arranged to protect the threads on the first bolt 5 and reinforce the structural stability between the shifting plate cover plate 4, the fixing plate 7 and the first bridge beam body 11.

In addition, transversely be provided with a plurality of expansion joint units side by side according to the width size of actual bridge, when the expansion joint takes place the lateral displacement change, can appear first bridge roof beam body 11 and drive displacement board apron 4 from one of them expansion joint unit lateral sliding to next expansion joint unit, through being equipped with powerful spring 8, can make displacement board apron 4 slight perk upwards, guarantee that displacement board apron 4 can insert the chamber 18 that shifts of adjacent expansion joint unit smoothly, the lateral sliding is smooth and easy and do not have the card and pause, prevent that displacement board apron 4 from appearing the jamming phenomenon when adjacent expansion joint unit slides, lead to the overall structure appearance fracture condition.

Further, be equipped with dog 15 along the ascending both ends tip in spout transverse direction, have limiting displacement to the board apron 4 that shifts, prevent that the expansion joint from surpassing the scope of shifting when lateral sliding and leading to overall structure to damage.

Further, the included angle scope between hypotenuse 41 and the vertical plane is 1 ~ 3 degrees, and the setting of this angle can guarantee that the board apron 4 that shifts is quick to be installed with horizontal shift board 3, the cooperation of main pinion rack 2, can restrict the 4 perks of board apron that shifts again.

Further, the bottom surface of the transverse shifting plate 3 along the transverse direction thereof is sequentially provided with a first inclined surface 31 and a first horizontal surface 32 from the center to the two ends, and the top surface of the fixing plate 7 is sequentially provided with a second inclined surface 71 and a second horizontal surface 72 matched with the bottom surface of the transverse shifting plate 3 from the center to the two ends along the transverse direction thereof. By adopting the above structure, the present embodiment enables the lateral displacement between the lateral displacement plate 3 and the fixed plate 7 to be performed and then automatically return under the interaction of the first inclined surface 31 and the second inclined surface 71.

Furthermore, each corner of the transverse displacement plate 3 is provided with a chamfer 33, so that when the expansion joint performs large transverse displacement movement, the transverse displacement plate 3 can be smoothly inserted into the displacement cavity 18 of the adjacent expansion joint unit.

Furthermore, the polytetrafluoroethylene plate 16 is arranged at the contact part of the transverse displacement plate 3 and the displacement plate cover plate 4, and the contact parts of the fixed plate 7 and the first bridge beam body 11 and the transverse displacement plate 3. The PTFE plate 16 has high lubricity, so that the movement of the transverse displacement plate 3 is smoother, and a foundation is provided for realizing large-distance transverse displacement; the PTFE plate 16 is adopted as an auxiliary displacement structure, the materials are common, and the material distribution difficulty during production and maintenance is greatly reduced.

Furthermore, the stainless steel plates 17 are arranged on the contact parts of the transverse displacement plate 3 with the fixing plate 7 and the first bridge beam body 11, so that the lubricating property and the abrasion resistance between adjacent plate bodies are improved, and the service life of the displacement structure is prolonged.

Furthermore, the first bridge beam body 11 and the second bridge beam body 13 are both provided with embedded ribs and anchor rings 10, and the second bridge beam body 13 is provided with a plurality of second bolts 14 at intervals along the transverse direction thereof.

Further, a rubber water stop 12 is arranged at a gap between the first bridge beam body 11 and the second bridge beam body 13.

In addition, in this embodiment, by adopting the design method of the resolution force, the horizontal force applied to the expansion joint is borne by the transverse displacement plate 3 and the displacement plate cover plate 4, and the like, so the first bolt 5 and the second bolt 14 do not bear the horizontal shearing force, and only bear the vertical force, so the dangerous situation that the bolts are sheared off does not occur, and the expansion joint can have the same service life as the concrete. The expansion joint structure is exquisite simple, and it is easy simple to maintain the change, can realize accomplishing the maintenance and the change of expansion joint under the condition of not interrupting the traffic.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a multidirectional expansion joint that shifts of large displacement modularization, includes main pinion rack, vice pinion rack, the broach intercrossing of main pinion rack and vice pinion rack has gap, its characterized in that:

2. The large-displacement modular multidirectional displacement expansion joint of claim 1, wherein: the lower extreme of fixed plate is equipped with the case that shifts, the other end of the board apron that shifts is vertically worn to be equipped with along its horizontal direction interval and is extended to a plurality of first bolts that shift the case, every it is equipped with powerful spring to lie in the case department cover that shifts on the first bolt, powerful spring's top and fixed plate butt.

3. The large-displacement modular multidirectional displacement expansion joint of claim 2, wherein: each first bolt is sleeved with a sleeve, and two ends of each sleeve are fixedly connected with the shifting plate cover plate and the fixing plate respectively.

4. The large-displacement modular multidirectional displacement expansion joint of claim 1, wherein: and stop blocks are arranged at the end parts of the two ends in the transverse direction of the sliding groove.

5. The large-displacement modular multidirectional displacement expansion joint as claimed in claim 1 or 4, wherein: the included angle range between the bevel edge and the vertical plane is 1-3 degrees.

6. The large-displacement modular multidirectional displacement expansion joint of claim 1, wherein: the bottom surface of horizontal transposition board along its transverse direction is first inclined plane, first horizontal plane by the center to both ends in proper order, the top surface of fixed plate along its transverse direction by the center to both ends in proper order be with horizontal transposition board bottom surface complex second inclined plane, second horizontal plane, each corner of horizontal transposition board is equipped with the chamfer.

7. The large-displacement modular multidirectional displacement expansion joint of claim 6, wherein: and the contact part of the transverse displacement plate and the displacement plate cover plate and the contact parts of the fixed plate and the first bridge body and the transverse displacement plate are respectively provided with a tetrafluoro plate.

8. The large-displacement modular multidirectional displacement expansion joint of claim 7, wherein: and stainless steel plates are arranged on the transverse displacement plate and at the contact parts of the transverse displacement plate, the fixed plate and the first bridge beam body.

9. The large-displacement modular multidirectional displacement expansion joint of claim 1, wherein: the first bridge girder body and the second bridge girder body are internally provided with embedded ribs and anchor rings, and the second bridge girder body is provided with a plurality of second bolts at intervals along the transverse direction.

10. The large-displacement modular multidirectional displacement expansion joint of claim 1, wherein: and a rubber water stop is arranged at the gap between the first bridge beam body and the second bridge beam body.