CN204570466U - Bridge extension joint - Google Patents
Bridge extension joint Download PDFInfo
- Publication number
- CN204570466U CN204570466U CN201520162174.8U CN201520162174U CN204570466U CN 204570466 U CN204570466 U CN 204570466U CN 201520162174 U CN201520162174 U CN 201520162174U CN 204570466 U CN204570466 U CN 204570466U
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- CN
- China
- Prior art keywords
- slide rail
- side slide
- bridge
- gap
- steel anchor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of bridge extension joint, comprise: to be arranged in gap that bridge reserves and with this bridge be positioned at left side steel anchor box that the structure on the left of gap is connected, be arranged on gap and with being positioned at right side steel anchor box that the structure on the right side of gap is connected and being connected with right side steel anchor box with left side steel anchor box respectively and along the flexible fence structure of the width in gap of this bridge, fence structure contains at least one expansion bracket that the length direction along gap is arranged in order; Bridge extension joint of the present utility model is made up of multiple stand-alone assembly, is convenient to install, repair and change.
Description
Technical field
The utility model belongs to bridge construction engineering field, relates to a kind of bridge extension joint.
Background technology
In bridge engineering, in order to ensure the concrete shrinkage that bridge construction causes due to variations in temperature, load change or creep of concrete under normal operating condition or stretching, need between the girder of bridge, between girder and abutment or between girder and parados, gap is set, and in these gaps, shrinkage joint or stretching device are installed, to enable bridge construction freely be out of shape, thus to ensure on it vehicle smoothly through.
CN 103510467A discloses a kind of bridge extension joint, and it comprises welded square tube, brace summer, side bar shaped steel and central sill shaped steel etc., and above-mentioned each assembly is fixed together becomes an overall structure.Because bridge extension joint is structure as a whole and quality and volume are all comparatively large, construction, install and maintenance all inconvenient; In addition, if in use some assembly is damaged, be then not easy to repair separately or integral replacing.If integral replacing, not only inconvenient maintenance, and also maintenance cost is also higher.
Utility model content
The purpose of this utility model is to provide a kind of distortion that can either adapt to bridge preset clearance to be convenient to again the bridge extension joint installed, change and keep in repair.
For achieving the above object, solution of the present utility model is:
A kind of bridge extension joint, comprising: to be arranged in gap that bridge reserves and with this bridge be positioned at left side steel anchor box that the structure on the left of gap is connected, be arranged on gap and with being positioned at right side steel anchor box that the structure on the right side of gap is connected and being connected with right side steel anchor box with left side steel anchor box respectively and the fence structure stretched along the width in gap of this bridge.
In preferred embodiment of the present utility model, fence structure comprises: the length direction along gap is layed in the left side slide rail on the steel anchor box inside wall of left side, the right side slide rail laid corresponding to left side slide rail and being arranged between left side slide rail and right side slide rail and at least one expansion bracket be arranged in order along its length on the steel anchor box inside wall of right side, expansion bracket comprises a fixed mount that telescopic shape change can occur and the movable stand of telescopic shape change can occur at least one pair of, two end points be positioned on the diagonal of width of fixed mount are connected with right side slide rail with left side slide rail by junction plate respectively in the mode that can spin, wherein cornerwise two end points of movable stand are slidably connected with left side slide rail and right side slide rail respectively.
Further, two end points on the diagonal of movable stand can lay respectively at cornerwise both sides of fixed mount, and fixed mount can be all connected by swivel bolt with the intersection on each limit of movable stand.
Further, fixed mount is formed by connecting by swivel bolt successively by four laths and its two end points be positioned on the diagonal of width are separately fixed on junction plate by swivel bolt, and movable stand is formed by connecting by swivel bolt successively by four bar strips and is positioned at wherein cornerwise two end points and is connected with right side slide rail with left side slide rail with pulley respectively by swivel bolt.
In preferred embodiment of the present utility model, expansion bracket can equally arrange in the longitudinal direction.
In preferred embodiment of the present utility model, left side slide rail, right side slideway and junction plate can be made up of Steel material.
Owing to adopting such scheme, the beneficial effects of the utility model are:
Bridge extension joint of the present utility model has can along the width of bridge preset clearance along with the fence structure of compliance telescopic shape change be made in the change in gap, this fence structure has at least one expansion bracket that the length direction along gap is arranged in order, therefore bridge extension joint is not the overall structure that a quality and volume are all very large, but be made up of multiple stand-alone assembly, be convenient to install, repair and change.
In addition, expansion bracket comprises fixed mount that telescopic shape change can occur and the movable stand of telescopic shape change can occur at least one pair of, fixed mount is formed by connecting by swivel bolt successively by four laths, movable stand is formed by connecting by swivel bolt successively by four bar strips, therefore, bridge extension joint convenient transportation of the present utility model and can directly installing at the scene, improves efficiency of construction.
In addition, left side steel anchor box and right side steel anchor box are welded to connect reinforcing bar respectively, can strengthen the bonding between itself and bridge concrete, prevent bond-slip, improve the durability of bridge construction.
In a word, bridge extension joint of the present utility model can adapt to bridge deformation needs in varied situations, and easily installs, changes and keep in repair.
Accompanying drawing explanation
Fig. 1 is the overall plan view of the bridge extension joint of the utility model embodiment.
Fig. 2 is the partial plan layout of the bridge extension joint of the utility model embodiment.
Fig. 3 is the elevation of a part for the bridge extension joint of the utility model embodiment.
Fig. 4 is the elevation of another part of the bridge extension joint of the utility model embodiment.
Reference numeral:
Left side steel anchor box 1, left side slide rail 2, swivel bolt 3, lath 4, junction plate 5, pulley 6, anchor bar 7, connecting reinforcement 8, gap 9, right side steel anchor box 10, fence structure 11, right side slide rail 12, expansion bracket 13, fixed mount 14, movable stand 15, bar strip 16.
Detailed description of the invention
Below in conjunction with accompanying drawing illustrated embodiment, the utility model is further described.
Embodiment
Between the girder that the bridge extension joint of the present embodiment is arranged on bridge, in the gap of presetting between girder and abutment or between girder and parados.
As shown in Figure 1 to Figure 3, bridge extension joint comprises left side steel anchor box 1, right side steel anchor box 10 and fence structure 11.
Wherein, as shown in figures 1 and 3, left side steel anchor box 1 is arranged in the reserved gap 9 of bridge, and its lateral surface is connected by the structure on the left of gap 9 (as the girder of bridge, abutment or parados etc.) that is positioned at of anchor bar 7 and connecting reinforcement 8 and this bridge.Anchor bar 7 preferably adopts prestressed reinforcement and adopts post-tensioned construction, until left side steel anchor box 1 and bridge be positioned at anatomical connectivity on the left of gap 9 good after, tensioned prestressing bar in reserving hole channel sealing off and covering anchorage completes construction.
Right side steel anchor box 10 and left side steel anchor box 1 are in being arranged in the reserved gap 9 of bridge correspondingly, and its lateral surface is also connected by the structure on the right side of gap 9 (as the girder of bridge, abutment or parados etc.) that is positioned at of anchor bar and connecting reinforcement and this bridge.
Fence structure 11 is arranged in the reserved gap 9 of bridge, and its two ends are connected with right side steel anchor box 10 with left side steel anchor box 1 respectively, and can make telescopic shape change along the width γ in gap 9.
Fence structure 11 comprises left side slide rail 2, right side slide rail 12 and at least one expansion bracket 13.
Wherein, left side slide rail 2 is layed on the inside wall of left side steel anchor box 1 along the length direction ξ in gap.Be preferably left side slide rail 2 in the present embodiment to be welded on the inside wall of left side steel anchor box 1.
Right side slide rail 12 is layed on the inside wall of right side steel anchor box 10 along the length direction ξ in gap, and its paving location on the inside wall of right side steel anchor box 10 is consistent with the paving location of left side slide rail 2 on the inside wall of left side steel anchor box 1.Be preferably right side slide rail 12 in the present embodiment to be welded on the inside wall of right side steel anchor box 10.
Expansion bracket 13 is arranged between left side slide rail 2 and right side slide rail 12 and length direction ξ along gap is that equidistant L arranges.The number of expansion bracket 13 can be determined according to actual conditions.
Expansion bracket 13 comprises a fixed mount that telescopic shape change can occur 14 and the movable stand 15 of telescopic shape change can occur at least one pair of.Each limit of fixed mount 14 can be crossing with each limit of movable stand 15, also can not be crossing with each limit of movable stand 15.In the present embodiment, each limit of preferred fixed mount 14 is crossing with each limit of movable stand 15.Each limit of fixed mount 14 can be connected by swivel bolt with the intersection point on the intersection point on each limit of movable stand 15 or each limit of paired two movable stands 15, also can be connected by obstructed over-rotation bolt.As shown in Figure 2, in the present embodiment, preferred each limit of fixed mount 14 is connected by swivel bolt 3 with the intersection point on the intersection point on each limit of movable stand 15 or each limit of paired two movable stands 15, now, cornerwise two ends of movable stand 15 lay respectively at cornerwise both sides of fixed mount 14.
As shown in Figure 2 and Figure 4, fixed mount 14 is formed by connecting by swivel bolt 3 successively by four laths 4, utilizes the unstability of parallelogram to realize telescopic shape change.Two end points (terminal A and terminal B) of a wherein diagonal (referring to the diagonal of the width γ along gap 9, as shown in dash line dotted line in Fig. 2) of fixed mount 14 are individually fixed on left side slide rail 2 and right side slide rail 12 by junction plate 5 in the mode that can spin.In the present embodiment, terminal A and terminal B are separately fixed on junction plate 5 by swivel bolt 3.Because the terminal A of fixed mount 14 and terminal B are fixed on junction plate 5, for the ease of distinguishing, so be referred to as fixed mount 14, but in fact its shape also can change.The distance L of adjacent two expansion brackets 13 equals the distance between the terminal A of the fixed mount 14 of each expansion bracket 13.
As shown in Figures 2 and 3, movable stand 15 is also formed by connecting by swivel bolt successively by four bar strips 16, also utilizes the unstability of parallelogram to realize telescopic shape change.On a wherein diagonal of movable stand 15, two end points (end points C and end points D) of (as shown in dash line-pecked line in Fig. 2) are slidably connected with left side slide rail 2 and right side slide rail 12 respectively.In the present embodiment, end points C is connected with right side slide rail 12 with left side slide rail 2 and swivel bolt 3 and the shared axis of rotation of pulley 6 with pulley 6 by swivel bolt 3 respectively with end points D.Because the end points C of movable stand 15 and end points D is connected on left side slide rail 2 and right side slide rail 12 by pulley 6, end points C and end points D can slide respectively on left side slide rail 2 and right side slide rail 12, the particular location of the two is not changeless, for the ease of distinguishing, so it is referred to as movable stand 15.
The flexible principle of the bridge extension joint in the present embodiment is as follows:
When temperature reduce, load change or creep of concrete time, gap 9 reserved in bridge increases, the left side steel anchor box 1 be fixed on the left side wall of gap 9 also increases with the spacing of the right side steel anchor box 10 be fixed on the right side wall of gap 9 thereupon, drives the left side slide rail 2 be fixed on the steel anchor box 1 of left side and the spacing increase being fixed on the right side slide rail 12 on the steel anchor box 10 of right side.Because fixed mount 14 is formed by connecting by swivel bolt 3 successively by four laths 4, according to the unstability of parallelogram, the distance of the terminal A on the diagonal being positioned at width γ of fixed mount 14 and terminal B increases, make the Distance Shortened between two other end points, thus there is dilatation in fixed mount 14.Simultaneously, because movable stand 15 is also formed by connecting by swivel bolt successively by four bar strips 16, the pulley at the end points C place of movable stand 15 slides along left side slide rail 2 towards near the direction of terminal A, the pulley at the end points D place of movable stand 15 slides along right side slide rail 12 towards near the direction of terminal B, thus dilatation occurs movable stand 15.
When temperature rising, load change, gap 9 reserved in bridge reduces, the left side steel anchor box 1 be fixed on the left side wall of gap 9 also reduces with the spacing of the right side steel anchor box 10 be fixed on the right side wall of gap 9 thereupon, drives the left side slide rail 2 be fixed on the steel anchor box 1 of left side and the spacing reduction being fixed on the right side slide rail 12 on the steel anchor box 10 of right side.Because fixed mount 14 is formed by connecting by swivel bolt 3 successively by four laths 4, according to the unstability of parallelogram, the distance of the terminal A on the diagonal being positioned at width γ of fixed mount 14 and terminal B reduces, distance between two other end points is increased, thus there is dilatation in fixed mount 14.Simultaneously, because movable stand 15 is also formed by connecting by swivel bolt successively by four bar strips 16, the pulley at the end points C place of movable stand 15 slides along left side slide rail 2 towards the direction away from terminal A, the pulley at the end points D place of movable stand 15 slides along right side slide rail 12 towards the direction away from terminal B, thus dilatation occurs movable stand 15.
Realize the compliance dilatation to bridge gap of bridge extension joint thus.
Above-mentioned is can understand for ease of those skilled in the art and use the utility model to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the utility model is not limited to above-described embodiment, and those skilled in the art, according to announcement of the present utility model, do not depart from improvement that the utility model category makes and amendment all should within protection domain of the present utility model.
Claims (6)
1. a bridge extension joint, is characterized in that: comprising: to be arranged in gap that bridge reserves and with this bridge be positioned at left side steel anchor box that the structure on the left of described gap is connected, be arranged on described gap and with being positioned at right side steel anchor box that the structure on the right side of described gap is connected and being connected with described right side steel anchor box with described left side steel anchor box respectively and along the flexible fence structure of the width in described gap of this bridge.
2. bridge extension joint according to claim 1, it is characterized in that: described fence structure comprises: the length direction along described gap is layed in the left side slide rail on the steel anchor box inside wall of described left side, the right side slide rail laid corresponding to described left side slide rail and be arranged at least one expansion bracket be arranged in order between described left side slide rail and described right side slide rail and along described length direction on the steel anchor box inside wall of described right side, described expansion bracket comprises a fixed mount that telescopic shape change can occur and the movable stand of telescopic shape change can occur at least one pair of, two end points on the diagonal being positioned at described width of described fixed mount are connected with described right side slide rail with described left side slide rail by junction plate respectively in the mode that can spin, wherein cornerwise two end points of described movable stand are slidably connected with described left side slide rail and described right side slide rail respectively.
3. bridge extension joint according to claim 2, it is characterized in that: two end points on the diagonal of described movable stand lay respectively at cornerwise both sides of described fixed mount, and described fixed mount is all connected by swivel bolt with the intersection on each limit of described movable stand.
4. bridge extension joint according to claim 3, is characterized in that: described fixed mount is formed by connecting by swivel bolt successively by four laths and its two end points be positioned on the diagonal of described width are separately fixed on described junction plate by swivel bolt;
Described movable stand be formed by connecting by swivel bolt successively by four bar strips and described in being positioned at wherein cornerwise two end points be connected with described right side slide rail with described left side slide rail with pulley respectively by swivel bolt.
5. bridge extension joint according to claim 2, is characterized in that: described expansion bracket equidistantly arranges on described length direction.
6., according to described bridge extension joint arbitrary in claim 1 to 5, it is characterized in that: described left side slide rail, described right side slideway and described junction plate are made up of Steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520162174.8U CN204570466U (en) | 2015-03-20 | 2015-03-20 | Bridge extension joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520162174.8U CN204570466U (en) | 2015-03-20 | 2015-03-20 | Bridge extension joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204570466U true CN204570466U (en) | 2015-08-19 |
Family
ID=53863130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520162174.8U Expired - Fee Related CN204570466U (en) | 2015-03-20 | 2015-03-20 | Bridge extension joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204570466U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108532454A (en) * | 2018-03-15 | 2018-09-14 | 南安市创培电子科技有限公司 | Highway-bridge Expansion Joints construct |
-
2015
- 2015-03-20 CN CN201520162174.8U patent/CN204570466U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108532454A (en) * | 2018-03-15 | 2018-09-14 | 南安市创培电子科技有限公司 | Highway-bridge Expansion Joints construct |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20180320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |