CN211547320U - Bridge expansion joint structure - Google Patents
Bridge expansion joint structure Download PDFInfo
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- CN211547320U CN211547320U CN201922353647.3U CN201922353647U CN211547320U CN 211547320 U CN211547320 U CN 211547320U CN 201922353647 U CN201922353647 U CN 201922353647U CN 211547320 U CN211547320 U CN 211547320U
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- fishback
- limiting
- expansion joint
- plate
- joint structure
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Abstract
The utility model relates to a bridge expansion joint structure, it includes that the symmetry is established the bolt assembly frame of the erection joint left and right sides on the road surface and a plurality of first fishback of being connected can be dismantled with left bolt assembly frame, still include a plurality of second fishback of being connected can be dismantled with the bolt assembly frame on right side, a plurality of spacing holes of establishing on second fishback right flank, a plurality of bracing piece with the left and right sides face fixed connection of bolt assembly frame, with bracing piece fixed connection's limiting plate, establish the gag lever post on the limiting plate and can dismantle the waterproof area of being connected with bolt assembly frame bottom, first fishback meshes with the second fishback mutually, the size of first fishback is greater than the size of second fishback, the gag lever post is the same with the shape of the cross section of spacing hole. The expansion joint structure has the advantage that the comb plate in the bridge expansion joint structure is not easy to loosen or separate.
Description
Technical Field
The utility model belongs to the technical field of the technique of bridge construction and specifically relates to a bridge expansion joint structure is related to.
Background
At present, a bridge expansion joint is a mounting structure arranged in a gap formed between two circuit boards in the process of bridge construction, and the bridge expansion joint can meet the requirement that a bridge deck deforms due to expansion caused by heat and contraction caused by cold. Common bridge expansion joints require that the expansion joints can be automatically expanded in two directions parallel to and perpendicular to the axis of the bridge, and are firm and reliable.
The existing bridge expansion joint structure consists of two comb-shaped steel plates, a bolt group framework, a base and a waterproof piece. One of the two comb-shaped steel plates is smaller in size and is connected to the bolt group framework only by the anchoring bolt and the nut. The bridge expansion joint can cause the comb tooth end part in the local comb tooth gap to upwarp or the anchor bolt to be damaged due to the factors of displacement, expansion with heat and contraction with cold, sinking of bridge abutment and the like between the road boards of the bridge in the use process, and the small-size comb tooth-shaped steel plate is firstly loosened and separated, so that the danger of vehicle jumping of passing vehicles is easily caused.
The anchor bolt in the bridge expansion joint structure among the above-mentioned prior art scheme is easy to be damaged and the broach type steel sheet is easy not hard up, and prior art's expansion joint structure has the shortcoming that broach type steel sheet is easy not hard up or breaks away from.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bridge expansion joint structure, its comb plate that has among the bridge expansion joint structure is difficult for taking place not hard up or the advantage that breaks away from.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a bridge expansion joint structure comprises bolt group frames symmetrically arranged on the left side and the right side of an installation seam on a road surface, a plurality of first comb plates detachably connected with the bolt group frame on the left side, a plurality of second comb plates detachably connected with the bolt group frame on the right side, a plurality of limiting holes arranged on the right side surface of the second comb plates, a plurality of supporting rods fixedly connected with the left side surface and the right side surface of the bolt group frames, limiting plates fixedly connected with the supporting rods, limiting rods arranged on the limiting plates and waterproof belts detachably connected with the bottoms of the bolt group frames;
the first comb plate is meshed with the second comb plate;
the size of the first comb plate is larger than that of the second comb plate;
the cross sections of the limiting rod and the limiting hole are the same in shape.
Through adopting the technical scheme, the utility model discloses carry out bottom benchmark location with the bolt assembly frame, played the effect of installation base, first fishback and second fishback can be dismantled with the bolt assembly frame and be connected, are convenient for install and dismantle. The bracing piece gives the utility model provides a support, and with spacing hole on bracing piece fixed connection's limiting plate and the limiting plate on spacing pole cooperation second fishback and the second fishback, make the utility model discloses outside the bolted connection that has the bolt group frame, spacing of limiting plate and limiting rod in addition, the size of first fishback is bigger than the size of second fishback, so the weight of first fishback is greater than the second fishback, and the size is big more, and the screw bolt and the nut of higher authority also increase, and first fishback installation is more stable than the second fishback. The cooperation in gag lever post and spacing hole has been avoided taking place to damage the back because of the bolt, and the second fishback takes place to become flexible or breaks away from.
The present invention may be further configured in a preferred embodiment as: the bolt group frame is also provided with a backing plate;
the lower surface of first fishback and the lower surface of second fishback all with the upper surface butt of backing plate.
Through adopting above-mentioned technical scheme, still be equipped with the backing plate on the bolt group frame, when first fishback and second fishback are with nut and bolt compression mounting, the backing plate can reduce the deformation of the vertical direction of first fishback and second fishback, can prevent simultaneously that the bolt is not hard up, has played controlling of packing ring, makes the utility model discloses the installation is more firm.
The present invention may be further configured in a preferred embodiment as: the lower surfaces of the first comb plate and the second comb plate are respectively provided with a plurality of T-shaped sliding strips, and the upper surface of the base plate is provided with a plurality of T-shaped limiting sliding grooves;
the T-shaped sliding strip is inserted into the T-shaped limiting sliding groove.
Through adopting the technical scheme, the utility model discloses in inserting the spacing spout of T type with T type draw runner for first fishback and second fishback are more firm with the direct being connected of backing plate, have restricted the vertical direction of first fishback and second fishback and have taken place to remove, avoid the nut not hard up back, become flexible or break away from between second fishback and the first fishback and produce the potential safety hazard.
The present invention may be further configured in a preferred embodiment as: and an elastic layer is filled in the meshing gap between the first comb plate and the second comb plate.
Through adopting above-mentioned technical scheme, first fishback and second fishback meshing clearance department fill has the elastic layer, can prevent that rainwater and silt stone from getting into the clearance, when the bridge road surface takes place to deform, can not take place the displacement between first fishback and the second fishback, and the extrusion force of stone is used and is caused on first fishback and the second fishback the utility model discloses a damage.
The present invention may be further configured in a preferred embodiment as: the supporting rod is of a U-shaped structure;
one end of the supporting rod is vertically bent downwards.
Through adopting above-mentioned technical scheme, the bracing piece is U type structure, and the vertical downward buckling of one end of bracing piece, and the bracing piece of U type structure can both play the effect of support together, makes the utility model discloses more stable during the installation, the vertical downward buckling of one end of bracing piece makes the utility model discloses the effort that the shrinkage produced that rises is heated to the temperature of concrete can be born to vertical direction and horizontal direction homoenergetic, makes the utility model discloses it is more firm.
The present invention may be further configured in a preferred embodiment as: the end part of the bent end of the support rod is provided with a bottom plate.
Through adopting above-mentioned technical scheme, the tip of supporting rod one end of buckling is equipped with the bottom plate for the area of contact increase of supporting rod and concrete, the utility model discloses it is more firm.
The present invention may be further configured in a preferred embodiment as: a plurality of annular grooves are formed in the inner wall of the limiting hole at intervals in the axis direction, and a plurality of annular convex strips are formed in the limiting rod at intervals in the axis direction.
Through adopting above-mentioned technical scheme, annular sand grip on the gag lever post can use through embedding installation cooperation with the annular groove, carries on spacingly to the second fishback. After the nut or the bolt on the second fishback are avoided damaging, the second fishback takes place to become flexible or break away from.
The present invention may be further configured in a preferred embodiment as: the longitudinal sections of the limiting holes and the limiting rods are trapezoidal.
Through adopting above-mentioned technical scheme, the longitudinal section of spacing hole and gag lever post is trapezoidal for when the gag lever post is taken out from spacing hole, the resistance that receives is not the horizontal direction, makes the gag lever post more difficult to take out from spacing hole like this. The limiting effect on the second comb plate is better.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the utility model adopts the first comb plate, the second comb plate and the bolt group frame to bear the deformation of the bridge caused by external force and expansion and contraction, besides the mounting and fastening effect between the bolt group frame and the first comb plate and the second comb plate, a limiting plate and a limiting rod are provided to limit the second comb plate, so as to avoid the second comb plate from loosening or breaking away;
2. the utility model provides a still set up the backing plate on the bolt group frame, it has T type spacing groove and sets up and carry on spacingly at first fishback and second fishback in the T type draw runner cooperation of first fishback and second fishback lower surface to the backing plate. Make the utility model provides a first fishback and second fishback installation are more firm, and difficult emergence is not hard up or breaks away from.
Drawings
Fig. 1 is a schematic view of the state of the utility model after being installed on the road surface of a bridge.
Fig. 2 is a schematic view of the overall structure of the present invention.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Fig. 4 is the structure diagram of the second comb plate of the present invention cut along the axis of the limiting hole.
Fig. 5 is a schematic structural diagram of the middle bolt group frame, the support rod 31 and the limiting plate of the present invention.
Reference numerals: 11. bolt group frame, 12, first fishback, 21, second fishback, 22, spacing hole, 31, bracing piece, 41, limiting plate, 42, gag lever post, 51, waterproof area, 111, backing plate, 61, T type draw runner, 112, the spacing spout of T type, 71, elastic layer, 311, bottom plate, 221, annular groove, 421, annular sand grip.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses a bridge expansion joint structure, mainly include bolt group frame 11, first fishback 12, second fishback 21, bracing piece 31, limiting plate 41, waterproof area 51 and elastic layer 71. Bolt group frame 11 symmetry sets up the left and right sides of the installation seam on the road surface, and first fishback 12 can be dismantled with left bolt group frame 11 and be connected, and second fishback 21 can be dismantled with bolt group frame 11 on right side and be connected, and bracing piece 31 and bolt group frame 11's the left and right sides face fixed connection, limiting plate 41 and bracing piece 31 fixed connection, and waterproof area 51 can be dismantled with bolt group frame 11 bottom and be connected.
Referring to fig. 1 and 2, the bolt assembly frame 11 is composed of a frame formed by welding a plurality of threaded steel bars and a plurality of bolts welded to the frame, and the bolts are vertically welded to the frame 11 at intervals. The bolt group frames 11 are mounted on both sides of the pavement mounting seam by concrete pouring. The bolt group frame 11 further comprises a backing plate 111 arranged on the bolt group frame 11, and the backing plate 111 and the bolt group frame 11 are connected in a welding mode. The lower surface of backing plate 111 all butts with the lower surface of first fishback 12 and second fishback 21, and the spacing spout 112 of T type has still been seted up to the upper surface of backing plate 111.
Referring to fig. 2 and 3, the first comb plate 12 is mounted on the bolt group frame 11 by nuts, the first comb plate 12 is engaged with the second comb plate 21, and the size of the first comb plate 12 is greater than that of the second comb plate 21. The first comb plate 12 further comprises a T-shaped sliding strip 61 arranged on the lower surface of the first comb plate 12, and the T-shaped sliding strip 61 is inserted and installed in the T-shaped sliding groove 112.
Referring to fig. 2 and 4, the second comb plate 21 is fixedly mounted on the bolt group frame 11 by bolts and nuts, and the second comb plate 21 further includes a T-shaped slide bar 61 and a limit hole 22. T type draw runner 61 sets up the lower surface at second fishback 21, and spacing hole 22 is seted up on second fishback 21 right flank, is provided with a plurality of annular grooves 221 along the axis direction interval on spacing hole 22's the inner wall, and spacing hole 22's longitudinal section is trapezoidal.
Referring to fig. 2, the support rod 31 and the bolt assembly frame 11 are connected by welding, and the support rod 31 has a U-shaped structure and is made of deformed steel. One end of the support rod 31 is vertically bent downwards, the support rod 31 further comprises a bottom plate 311 arranged at the end part of the bent end of the support rod 31, and the bottom plate 311 is connected with the support rod 31 in a welding manner.
Referring to fig. 5, the connection mode of the limiting plate 41 and the support rod 31 is welding, the limiting plate 41 further includes a limiting rod 42 disposed on the limiting plate 41, the limiting rod 42 is the same as the cross section of the limiting hole 22, and when the second comb plate 21 is installed, the limiting hole 22 on the second comb plate 21 is aligned with the limiting rod 42 and inserted. A plurality of annular protruding strips 421 are arranged on the limiting rod 42 at intervals along the axial direction, and the annular protruding strips 421 can be embedded into the annular grooves 221. The stopper rod 42 has a trapezoidal shape in longitudinal section.
Referring to fig. 1 and 2, the waterproof tape 51 has a circular arc shape, and the waterproof tape 51 is composed of a mounting groove tube welded to the bolt assembly frame 11 and a circular arc-shaped rubber waterproof strip inserted into the mounting groove tube. When the rubber waterproof strip is replaced, the rubber waterproof strip is pulled out from the mounting groove by using a tool.
Referring to fig. 1 and 2, the elastic layer 71 is formed by filling a polysulfide sealant material into the gap between the first comb plate 12 and the second comb plate 21, compacting and leveling the polysulfide sealant material.
The implementation principle of the embodiment is as follows:
when the constructor installation the utility model discloses the time, the installation seam both sides of reserving on the road surface of bridge at first use portal crane with bolt group frame 11 fixed position, then install the side in bolt group frame 11 bottom with waterproof area 51. Then, the limit plate 41 is welded to the support rod 31, and then, a plurality of screw bars are welded to the support rod 31 and the bolt group frame 11. Concrete is then poured and vibrated. After the concrete has set, the constructor welds the backing plate 111 to the bottom of the bolt on the bolt group frame 11. Finally, T-shaped slide bar 61 is inserted in alignment with T-shaped limit slide groove 112, and the lower surfaces of first comb plate 12 and second comb plate 21 are abutted to the upper surface of backing plate 111. When installing second fishback 21, insert spacing rod 42 in spacing hole 22, annular groove 221 and annular sand grip 421 cooperate and make the connection between second fishback 21 and the limiting plate 41 more firm. And then the first comb plate 12 and the second comb plate 21 are installed and fastened by nuts, and then surfacing and grinding are carried out on the nuts. Finally, the elastic layer 71 is filled in the gap where the first comb plate 12 and the second comb plate 21 mesh.
When the utility model discloses use a period after, because of the road surface hot expansion shrinkage on the bridge, in addition the car is reciprocal to be rolled, when not hard up or damage appears in bolt and nut, limiting plate 41 welds on supporting rod 31, and the gag lever post 42 on the limiting plate 41 inserts in the spacing hole 22 of second fishback 21, and the cooperation is used between the two, can prevent that second fishback 21 is not hard up or breaks away from, constitutes the threat to the vehicle of coming and going. Meanwhile, the backing plate 111 is welded on the concrete poured bolt group frame 11, and the T-shaped limiting groove 112 of the backing plate 111 is matched with the T-shaped sliding strips 61 on the first comb plate 12 and the second comb plate 21 for limiting. Make the utility model discloses more firm, difficult emergence is not hard up or breaks away from. At the same time, the elastic layer 71 prevents silt or stones from entering the meshing gap between the first comb plate 12 and the second comb plate 21.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a bridge expansion joint structure, includes bolt group frame (11) and a plurality of first fishback (12) of being connected with left bolt group frame (11) can be dismantled to the symmetry about the installation seam of establishing on the road surface, its characterized in that: the comb is characterized by further comprising a plurality of second comb plates (21) detachably connected with the bolt group frame (11) on the right side, a plurality of limiting holes (22) formed in the right side face of the second comb plates (21), a plurality of supporting rods (31) fixedly connected with the left side face and the right side face of the bolt group frame (11), limiting plates (41) fixedly connected with the supporting rods (31), limiting rods (42) arranged on the limiting plates (41) and waterproof belts (51) detachably connected with the bottoms of the bolt group frame (11);
the first comb plate (12) is meshed with the second comb plate (21);
the size of the first comb plate (12) is larger than that of the second comb plate (21);
the cross section of the limiting rod (42) is the same as that of the limiting hole (22).
2. The bridge expansion joint structure of claim 1, wherein: a cushion plate (111) is further arranged on the bolt group frame (11);
the lower surface of the first comb plate (12) and the lower surface of the second comb plate (21) are both abutted to the upper surface of the backing plate (111).
3. A bridge expansion joint structure according to claim 2, wherein: the lower surfaces of the first comb plate (12) and the second comb plate (21) are provided with a plurality of T-shaped sliding strips (61), and the upper surface of the backing plate (111) is provided with a plurality of T-shaped limiting sliding grooves (112);
the T-shaped sliding strip (61) is inserted into the T-shaped limiting sliding groove (112).
4. The bridge expansion joint structure of claim 1, wherein: and an elastic layer (71) is filled in the meshing gap between the first comb plate (12) and the second comb plate (21).
5. The bridge expansion joint structure of claim 1, wherein: the supporting rod (31) is of a U-shaped structure;
one end of the supporting rod (31) is vertically bent downwards.
6. A bridge expansion joint structure according to claim 1 or 5, wherein: the end part of the bent end of the support rod (31) is provided with a bottom plate (311).
7. The bridge expansion joint structure of claim 1, wherein: a plurality of annular grooves (221) are formed in the inner wall of the limiting hole (22) at intervals along the axis direction, and a plurality of annular protruding strips (421) are formed in the limiting rod (42) at intervals along the axis direction.
8. A bridge expansion joint structure according to claim 1 or 7, wherein: the longitudinal sections of the limiting hole (22) and the limiting rod (42) are trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353647.3U CN211547320U (en) | 2019-12-24 | 2019-12-24 | Bridge expansion joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353647.3U CN211547320U (en) | 2019-12-24 | 2019-12-24 | Bridge expansion joint structure |
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| Publication Number | Publication Date |
|---|---|
| CN211547320U true CN211547320U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922353647.3U Active CN211547320U (en) | 2019-12-24 | 2019-12-24 | Bridge expansion joint structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235417A (en) * | 2021-06-17 | 2021-08-10 | 李涛 | Comb-tooth type bridge expansion device |
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2019
- 2019-12-24 CN CN201922353647.3U patent/CN211547320U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235417A (en) * | 2021-06-17 | 2021-08-10 | 李涛 | Comb-tooth type bridge expansion device |
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