CN217127904U - Expansion joint structure - Google Patents
Expansion joint structure Download PDFInfo
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- CN217127904U CN217127904U CN202220768266.0U CN202220768266U CN217127904U CN 217127904 U CN217127904 U CN 217127904U CN 202220768266 U CN202220768266 U CN 202220768266U CN 217127904 U CN217127904 U CN 217127904U
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- expansion joint
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Abstract
The application relates to the field of pavement structures, in particular to an expansion joint structure which comprises a first cement concrete plate and a second cement concrete plate which are adjacently arranged, wherein an expansion joint is reserved between the first cement concrete plate and the second cement concrete plate, a metal sleeve is installed in the first cement concrete plate, and sawdust is filled in the metal sleeve; the dowel bar is installed between the first cement concrete plate and the second cement concrete plate, one end of the dowel bar is inserted into the metal sleeve in a sliding mode, and the other end of the dowel bar is fixedly inserted into the second cement concrete plate. This application is through setting up the tension bar, can make the road surface be difficult for appearing the uneven settlement situation.
Description
Technical Field
The application relates to the field of pavement structures, in particular to an expansion joint structure.
Background
In order to enable the cement concrete slabs to relatively extend in the longitudinal direction when the temperature rises in the road surface construction process, expansion joints are usually reserved between two adjacent cement concrete slabs so as to deal with expansion and contraction of the road surface.
However, at present, the caulking treatment is generally performed directly by using the pine sand. Because the joint strength between two adjacent cement concrete slabs is not enough, when the local stress of the road surface is too large, the adjacent cement concrete slabs can be vertically staggered relatively, so that the road surface is easy to have uneven settlement. Therefore, further improvements can be made.
SUMMERY OF THE UTILITY MODEL
In order to make the road surface be difficult for appearing differential settlement, this application provides an expansion joint structure.
The application provides an expansion joint structure adopts following technical scheme:
an expansion joint structure comprises a first cement concrete plate and a second cement concrete plate which are adjacently arranged, wherein an expansion joint is reserved between the first cement concrete plate and the second cement concrete plate, a metal sleeve is installed in the first cement concrete plate, and wood chips are filled in the metal sleeve; and a dowel bar is arranged between the first cement concrete slab and the second cement concrete slab, one end of the dowel bar is inserted into the metal sleeve in a sliding manner, and the other end of the dowel bar is fixedly inserted into the second cement concrete slab.
By adopting the technical scheme, the dowel bar is arranged between the first cement concrete plate and the second cement concrete plate, so that the first cement concrete plate and the second cement concrete plate are not easy to be vertically staggered relatively, and the road surface is not easy to have uneven settlement. Meanwhile, due to the fact that the sawdust is filled in the metal sleeve, when the first cement concrete slab and the second cement concrete slab are horizontally staggered and expanded, the sawdust can buffer relative movement to reduce the vibration degree of the pavement.
Optionally, the dowel bar is inserted into one end of the first cement concrete slab and coated with an asphalt layer.
Through adopting above-mentioned technical scheme, because the dowel steel is pegged graft and is scribbled the pitch layer in first cement concrete slab one end, the dowel steel of being convenient for slides when temperature variation and stretches out and draws back.
Optionally, a buffer member is arranged in the expansion joint, and the buffer member is used for buffering the horizontal dislocation expansion between the first cement concrete slab and the second cement concrete slab.
Through adopting above-mentioned technical scheme, owing to be provided with the bolster, when first cement concrete slab and second cement concrete slab take place relative dislocation inflation along the horizontal direction, the bolster can cushion this dislocation inflation to weaken the road surface and rock in the dislocation of horizontal direction.
Optionally, the buffer comprises an elastic wood plate.
By adopting the technical scheme, when the first cement concrete slab and the second cement concrete slab are subjected to relative dislocation expansion along the horizontal direction, the first cement concrete slab and the second cement concrete slab extrude the elastic wood board, so that the elastic wood board is buffered through elastic deformation.
Optionally, asphalt mastic is poured between the expansion joints and is encapsulated on the top of the elastic wood board.
Through adopting above-mentioned technical scheme, because fill in the expansion joint has pitch mastic, can carry out the shutoff to the expansion joint, can carry out dampproofing and waterproofing.
Optionally, a telescopic sliding sleeve is slidably sleeved on the periphery of the dowel bar, and the telescopic sliding sleeve is installed between the first cement concrete slab and the second cement concrete slab; the telescopic sliding sleeve comprises a first sleeve and a second sleeve, one end of the second sleeve is slidably arranged in the first sleeve, and one ends of the first sleeve and the second sleeve, which are far away from each other, are fixed on a first cement concrete slab and a second cement concrete slab respectively.
By adopting the technical scheme, when the first cement concrete slab and the second cement concrete slab are subjected to relative dislocation expansion along the horizontal direction, the telescopic sliding sleeve can support the dowel bar so as to further improve the sliding stability of the dowel bar; simultaneously, the flexible sliding sleeve can further improve the joint strength between first cement concrete slab and the second cement concrete slab, further makes between first cement concrete slab and the second cement concrete slab be difficult for taking place relative dislocation along vertical to make the road surface be difficult for appearing the differential settlement condition.
Optionally, the buffer member includes two curb plates and installs the elasticity swash plate between two curb plates, the slope of elasticity swash plate sets up, just elasticity swash plate both ends are fixed mutually with two curb plates respectively.
Through adopting above-mentioned technical scheme, when first cement concrete slab and second cement concrete slab take place relative dislocation inflation along the horizontal direction, first cement concrete slab and second cement concrete slab extrude two curb plates respectively, make two curb plates can extrude elasticity swash plate and take place elastic deformation to cushion this dislocation inflation.
Optionally, a buffer spring is installed between the side plate and the elastic inclined plate.
Through adopting above-mentioned technical scheme, when first cement concrete slab and second cement concrete slab take place relative dislocation inflation along the horizontal direction, because install buffer spring between curb plate and the elasticity swash plate, can further improve the buffer effect of bolster to this dislocation inflation.
In summary, the present application includes at least one of the following beneficial technical effects:
because a dowel bar is arranged between the first cement concrete plate and the second cement concrete plate, the first cement concrete plate and the second cement concrete plate are not easy to be vertically staggered relatively, so that the road surface is not easy to have uneven settlement. Meanwhile, as the wood chips are filled in the metal sleeve, when the first cement concrete plate and the second cement concrete plate are horizontally subjected to relative dislocation expansion, the wood chips can buffer the relative movement so as to reduce the vibration degree of the road surface;
because the dowel bar is inserted into one end of the first cement concrete slab and coated with the asphalt layer, the dowel bar can conveniently slide and stretch when the temperature changes;
when the first cement concrete plate and the second cement concrete plate are subjected to relative dislocation expansion along the horizontal direction, the first cement concrete plate and the second cement concrete plate extrude the elastic wood plate, so that the elastic wood plate is buffered through elastic deformation.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic view of the overall structure of embodiment 2 of the present application.
Description of reference numerals:
1. a first cement concrete panel; 2. a second concrete slab; 3. expanding the seam; 4. a dowel bar; 41. a metal sheath; 42. wood dust; 43. an asphalt layer; 5. mastic asphalt; 61. an elastic wood board; 62. a side plate; 63. an elastic sloping plate; 64. a buffer spring; 7. a telescopic sliding sleeve; 71. a first sleeve; 72. a second sleeve.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses seam structure expands.
Example 1:
referring to fig. 1, the expansion joint structure comprises a first cement concrete slab 1 and a second cement concrete slab 2, wherein the first cement concrete slab 1 is arranged adjacent to the second cement concrete slab 2, and an expansion joint 3 is reserved between the first cement concrete slab 1 and the second cement concrete slab 2 so that the first cement concrete slab 1 and the second cement concrete slab 2 can expand and contract relatively along a horizontal direction.
In the embodiment, a dowel bar 4 is installed between the first cement concrete slab 1 and the second cement concrete slab 2, the dowel bar 4 is horizontally arranged, and one end of the dowel bar 4 is inserted and fixed in the second cement concrete slab 2. A metal sleeve 41 is embedded and fixed in the first cement concrete slab 1, the metal sleeve 41 is horizontally arranged towards the second cement concrete slab 2, and sawdust 42 is filled in the metal sleeve 41; the first cement concrete slab 1 is provided with an inserting sliding hole towards one side of the second cement concrete slab 2, and the inserting sliding hole extends to the position of the metal sleeve 41 along the horizontal direction. The end of the dowel bar 4, which is far away from the second cement concrete slab 2, is inserted into the insertion slide hole in a sliding mode and extends into the metal sleeve 41 in an insertion mode.
Because the dowel bar 4 is arranged between the first cement concrete plate 1 and the second cement concrete plate 2, the first cement concrete plate 1 and the second cement concrete plate 2 are not easy to be vertically staggered relatively, so that the road surface is not easy to have uneven settlement. Meanwhile, due to the fact that the metal sleeve 41 is filled with the wood chips 42, when the first cement concrete slab 1 and the second cement concrete slab 2 are subjected to relative dislocation expansion along the horizontal direction, the wood chips 42 can buffer the relative movement to reduce the vibration degree of the road surface.
In this embodiment, the dowel bar 4 is inserted into one end of the first cement concrete slab 1 and is coated with the asphalt layer 43, so that adhesion between the dowel bar 4 and the inner wall of the insertion sliding hole can be reduced, and the dowel bar 4 can slide and stretch when the temperature changes conveniently.
Referring to fig. 1 and 2, in the present embodiment, the sliding sleeve 7 is slidably sleeved on the periphery of the dowel 4, the sliding sleeve 7 is installed between the first concrete slab 1 and the second concrete slab 2, and both ends of the sliding sleeve 7 are respectively fixed to the first concrete slab 1 and the second concrete slab 2.
Specifically, in the present embodiment, the sliding sleeve 7 includes a first sleeve 71 and a second sleeve 72; one end of the second sleeve 72 is slidably disposed in the first sleeve 71, and one end of the first sleeve 71 away from the second sleeve is fixed to the first cement concrete slab 1, and one end of the second sleeve 72 away from the first sleeve is fixed to the second cement concrete slab 2.
When the first cement concrete slab 1 and the second cement concrete slab 2 are subjected to relative dislocation expansion along the horizontal direction, the telescopic sliding sleeve 7 can support the dowel bar 4 so as to further improve the sliding stability of the dowel bar 4; meanwhile, the telescopic sliding sleeve 7 can further improve the connection strength between the first cement concrete slab 1 and the second cement concrete slab 2, and further enables the first cement concrete slab 1 and the second cement concrete slab 2 not to be prone to relative dislocation along the vertical direction, so that the road surface is not prone to uneven settlement.
A buffer piece is arranged in the expansion joint 3; in this embodiment, the buffering member includes an elastic wood board 61, and the elastic wood board 61 is vertically inserted into the expansion joint 3 to buffer the horizontal direction dislocation and shaking between the first cement concrete slab 1 and the second cement concrete slab 2.
When the first cement concrete slab 1 and the second cement concrete slab 2 are displaced and expanded relatively in the horizontal direction, the first cement concrete slab 1 and the second cement concrete slab 2 squeeze the elastic wood board 61, and the elastic wood board 61 is cushioned by elastic deformation, so that displacement and shaking of the road surface in the horizontal direction are reduced.
In addition, in the present embodiment, the outer circumferential surface of the elastic wood board 61 is coated with the asphalt, so that the adhesion between the elastic wood board 61 and the first cement concrete slab 1 and the second cement concrete slab 2 can be reduced, and the elastic wood board 61 can be elastically deformed accordingly.
In this embodiment, it has asphalt mastic 5 to pour into between the seam 3 expands, and 5 embedments of asphalt mastic are in elasticity plank 61 tops to carry out the shutoff to seam 3 expands, can carry out dampproofing and waterproofing to 3 inside bloats of seam, and then guarantee 3 inside structural stability of seam that expand.
Example 2:
referring to fig. 3, the present embodiment is different from embodiment 1 in that the buffer structure is different.
Specifically, in the present embodiment, the buffer member includes two side plates 62 and an elastic sloping plate 63 installed between the two side plates 62; wherein, the elastic inclined plate 63 is obliquely arranged, and two ends of the elastic inclined plate 63 are respectively welded and fixed with the two side plates 62; the two side plates 62 are arranged oppositely, and one side of each side plate is abutted against the first cement concrete plate 1 and the second cement concrete plate 2 respectively.
When the first cement concrete plate 1 and the second cement concrete plate 2 are horizontally displaced and expanded relative to each other, the first cement concrete plate 1 and the second cement concrete plate 2 respectively press the two side plates 62, so that the elastic sloping plates 63 can be pressed by the two side plates 62 to elastically deform, thereby buffering the displacement and expansion.
In this embodiment, a buffer spring 64 is further installed between the two side plates 62 and the elastic inclined plate 63, and two ends of the buffer spring 64 are respectively fixed to the side plates 62 and the elastic inclined plate 63.
When the first cement concrete slab 1 and the second cement concrete slab 2 are displaced and expanded relatively in the horizontal direction, the buffer spring 64 is interposed between the side plate 62 and the elastic sloping plate 63, so that the buffer effect of the buffer against the displacement and expansion can be further improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. An expansion joint structure, includes adjacent first cement concrete slab (1) and second cement concrete slab (2) that set up, just it has expansion joint (3) to reserve between first cement concrete slab (1) and second cement concrete slab (2), its characterized in that: a metal sleeve (41) is installed in the first cement concrete slab (1), and wood chips (42) are filled in the metal sleeve (41); a dowel bar (4) is arranged between the first cement concrete slab (1) and the second cement concrete slab (2), one end of the dowel bar (4) is inserted into the metal sleeve (41) in a sliding mode, and the other end of the dowel bar is fixedly inserted into the second cement concrete slab (2).
2. The expansion joint structure according to claim 1, wherein: the dowel bar (4) is inserted into one end of the first cement concrete slab (1) and is coated with an asphalt layer (43).
3. The expansion joint structure according to claim 1, wherein: be provided with the bolster in expansion joint (3), just the bolster is used for buffering the horizontal direction dislocation inflation between first cement concrete slab (1) and second cement concrete slab (2).
4. An expansion joint structure according to claim 3, wherein: the buffer comprises a resilient wooden plate (61).
5. The expansion joint structure according to claim 4, wherein: asphalt mastic (5) is poured between the expansion joints (3), and the asphalt mastic (5) is encapsulated on the top of the elastic wood board (61).
6. An expansion joint structure according to claim 4, wherein: a telescopic sliding sleeve (7) is sleeved on the periphery of the dowel bar (4) in a sliding manner, and the telescopic sliding sleeve (7) is installed between the first cement concrete slab (1) and the second cement concrete slab (2); the telescopic sliding sleeve (7) comprises a first sleeve (71) and a second sleeve (72), one end of the second sleeve (72) is slidably arranged in the first sleeve (71), and one ends, far away from each other, of the first sleeve (71) and the second sleeve (72) are respectively fixed on the first cement concrete slab (1) and the second cement concrete slab (2).
7. An expansion joint structure according to claim 3, wherein: the buffer piece comprises two side plates (62) and an elastic inclined plate (63) arranged between the two side plates (62), the elastic inclined plate (63) is obliquely arranged, and two ends of the elastic inclined plate (63) are fixed with the two side plates (62) respectively.
8. The expansion joint structure of claim 7, wherein: and a buffer spring (64) is arranged between the side plate (62) and the elastic sloping plate (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220768266.0U CN217127904U (en) | 2022-04-01 | 2022-04-01 | Expansion joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220768266.0U CN217127904U (en) | 2022-04-01 | 2022-04-01 | Expansion joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217127904U true CN217127904U (en) | 2022-08-05 |
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ID=82646716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220768266.0U Active CN217127904U (en) | 2022-04-01 | 2022-04-01 | Expansion joint structure |
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| Country | Link |
|---|---|
| CN (1) | CN217127904U (en) |
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2022
- 2022-04-01 CN CN202220768266.0U patent/CN217127904U/en active Active
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