CN214831856U - Abutment butt strap structure of road and bridge engineering - Google Patents
Abutment butt strap structure of road and bridge engineering Download PDFInfo
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- CN214831856U CN214831856U CN202120776846.XU CN202120776846U CN214831856U CN 214831856 U CN214831856 U CN 214831856U CN 202120776846 U CN202120776846 U CN 202120776846U CN 214831856 U CN214831856 U CN 214831856U
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Abstract
The utility model relates to an abutment attachment strap structure of road and bridge engineering, belong to road and bridge building field, it includes abutment and road bed, be provided with first attachment strap on the road bed, the second attachment strap, sleeper beam and linking attachment strap, the one end of first attachment strap is passed through connecting reinforcement and abutment connection, the one end that the abutment was kept away from to first attachment strap is taken on one side surface of sleeper beam, the one end of second attachment strap is taken and is kept away from one side of first attachment strap on the surface at the sleeper beam, leave flexible gap between first attachment strap and the second attachment strap, linking attachment strap is taken and is established on first attachment strap and second attachment strap and cover flexible gap, the both sides bottom of linking attachment strap is provided with the bar lug, the bar groove that the width is greater than the bar lug is offered to position department that first attachment strap and second attachment strap correspond the bar lug, the bar lug is pegged graft in the bar groove. This application can reduce the fracture of abutment attachment strap, and can make the abutment attachment strap have the space of scalable displacement, makes the difficult crack that produces in road surface.
Description
Technical Field
The application relates to the field of road and bridge construction, in particular to an abutment butt strap structure of road and bridge engineering.
Background
Because the abutment of bridge is rigid material, and the soil of road bed is soft material, the road bed is difficult to avoid taking place to subside under long-time load, forms the step difference in height between road bed surface after subsiding and the abutment, takes place the bridgehead to jump the car when making the vehicle travel the handing-over department of abutment and road bed, influences driving safety.
Therefore, a roadbed abutment butt strap is generally arranged between the abutment and the roadbed, one end of the abutment butt strap is connected to the abutment, the other end of the abutment butt strap is placed on the roadbed and can rotate along with the settlement of the roadbed, and the step height difference is converted into a certain gradient, so that the junction of the abutment and the roadbed is in smooth transition, and the buffer effect is achieved on the running of vehicles.
In view of the related art in the above, the inventors consider that there are drawbacks in that: when the roadbed is unevenly settled, local void is easily formed below the abutment butt strap, and the local void causes the suspension ground placing load of the abutment butt strap, so that the abutment butt strap is easy to bend and break.
SUMMERY OF THE UTILITY MODEL
In order to reduce the fracture of abutment attachment strap, this application provides an abutment attachment strap structure of road and bridge engineering, can improve the stress of abutment attachment strap, and can make the abutment attachment strap have scalable displacement's space, make the difficult crack that produces in road surface.
The application provides a pair of abutment attachment strap structure of road bridge engineering adopts following technical scheme:
an abutment butt strap structure of road and bridge engineering, which comprises an abutment and a roadbed, wherein the roadbed is provided with a first butt strap, a second butt strap, a sleeper beam and a connecting butt strap, one end of the first butt strap is connected with the abutment through a connecting steel bar, one end of the first butt strap, which is far away from the abutment, is erected on the surface of one side of the sleeper beam, one end of the second butt strap is erected on the surface of one side of the sleeper beam far away from the first butt strap, a telescopic gap is reserved between the first butt strap and the second butt strap, the connecting butt strap is erected on the first butt strap and the second butt strap and covers the telescopic gap, the bottom ends of the two sides of the connecting butt strap are provided with strip-shaped convex blocks, the positions of the first butt strap and the second butt strap corresponding to the strip-shaped convex blocks are provided with strip-shaped grooves with the width larger than that of the strip-shaped convex blocks, and the strip-shaped convex blocks are inserted into the strip-shaped grooves.
Through adopting above-mentioned technical scheme, the flexible displacement that first attachment strap and second attachment strap expend with heat and contract with cold and take place can obtain the release in the gap, make the road surface be difficult for forming the crack because of the flexible of attachment strap, improve the security of driving, in addition, link up the attachment strap and connect first attachment strap and second attachment strap at the horizontal direction, make first attachment strap and second attachment strap can follow the settlement of road bed and rotate on the sleeper beam respectively for first attachment strap and second attachment strap more laminate the road bed surface and carry out load, thereby reduced first attachment strap and the cracked possibility of second attachment strap.
Preferably, an anchor cable is arranged in the telescopic gap and connected with the connecting butt strap and the sleeper beam.
Through adopting above-mentioned technical scheme, make to link up the attachment strap and connect first attachment strap and second attachment strap on the sleeper beam to make first attachment strap and second attachment strap have the effect of mutual company at the rotation in-process that subsides, make the slope transition between first attachment strap and the second attachment strap more gentle.
Preferably, the expansion gap is filled with foam.
By adopting the technical scheme, after the telescopic gap is filled with the foamed plastic, the subsequently laid pavement material is not easy to enter the telescopic gap to cause blockage, and the influence on the telescopic displacement of the first butt strap and the second butt strap is reduced.
Preferably, felt is arranged between the bottom surfaces of the two side edges of the connecting butt strap and the top surfaces of the first butt strap and the second butt strap.
Through adopting above-mentioned technical scheme for when first attachment strap and second attachment strap take place to rotate, the joining attachment strap can adapt to this kind of rotation through the felt, thereby makes the joining attachment strap maintain better stable leakproofness on first attachment strap and second attachment strap, has reduced the moisture infiltration and has aggravated the sunken condition of road bed.
Preferably, waterproof geotextile is laid at the joint of the first butt strap and the top of the abutment.
Through adopting above-mentioned technical scheme, make the difficult gap inflow road bed inside from between first attachment strap and the abutment of rainwater, improved the inner structure stability of road bed, make the difficult local coming to nothing of taking place of road bed and lead to the fact the influence to the attachment strap.
Preferably, asphalt mastic is poured between the contact surfaces of the first butt strap and the abutment.
Through adopting above-mentioned technical scheme, pitch mastic has flexible deformation performance and can maintain the articulated relation of first attachment strap and abutment, and its bonding ability can improve connection stability between first attachment strap and the abutment to can rotate first attachment strap and play lubricated effect, reduce the noise of first attachment strap when rotating on the abutment.
Preferably, cement stabilized macadam bedding layers are paved on the first butt strap, the second butt strap and the roadbed below the sleeper beam.
By adopting the technical scheme, a more stable load layer is formed on the roadbed, and the condition of uneven settlement of the roadbed is reduced.
Preferably, the cement stabilized macadam bedding layer is paved with geogrids at the bottom.
By adopting the technical scheme, the cement stabilized gravel layer can be restrained by the geogrid and can be better maintained on the roadbed.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the first butt strap, the second butt strap, the connecting butt strap and the sleeper beam, when the roadbed is unevenly settled, the first butt strap and the second butt strap can respectively rotate on the sleeper beam, and the connecting butt strap is used for transitionally connecting the first butt strap and the second butt strap, so that the local overhead condition between the first butt strap and the roadbed, the second butt strap and the roadbed are uniformly stressed and are not easy to break;
2. the flexible gap between first attachment strap and the second attachment strap can provide the required flexible displacement space of expend with heat and contract with cold, makes first attachment strap and second attachment strap be difficult for forming the crack on the road surface, improves driving safety.
Drawings
FIG. 1 is a schematic diagram of the overall structure in an embodiment of the present application;
fig. 2 is an enlarged view a of fig. 1.
Description of reference numerals: 1. an abutment; 11. waterproof geotextile; 12. mastic asphalt; 2. a pavement layer; 3. a first strap; 31. connecting reinforcing steel bars; 4. a second strap; 5. a bolster; 6. joining the butt strap; 61. an anchor cable; 71. a telescopic gap; 72. a foamed plastic; 73. a strip-shaped groove; 74. a bar-shaped projection; 75. a felt; 8. a cement stabilized macadam cushion layer; 81. a geogrid; 9. and (7) roadbed.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses abutment attachment strap structure of road bridge engineering.
Referring to fig. 1 and 2, an abutment butt strap structure of road and bridge engineering, including abutment 1, one side overlap joint of abutment 1 has the bridge, and the other one side of abutment 1 is filled with backfill soil and is formed road bed 9, and it is equipped with cement stabilized macadam bed course 8 to lay on road bed 9, and in this embodiment, cement stabilized macadam bed course 8 is provided with two-layerly, and two-layer cement accounts for the aggregate quality from bottom to top and is 3% and 5% in proper order, and geogrid 81 has all been laid to the bottom of two-layer cement stabilized macadam bed course 8.
Broken stone bed course 8 is stabilized to cement can make and form more firm load layer on the soil matrix, and geogrid 81 can be to 8 restraint locks of broken stone bed course are stabilized to cement, increases the skid resistance stability of broken stone bed course 8 on road bed 9, and the broken stone bed course 8 is stabilized to cement that two-layer different cement account for than can make road bed 9 go up the increase of load intensity have better transitivity, makes the road surface subside more evenly.
As shown in fig. 1 and 2, a bolster 5 is placed on a cement stabilized macadam mat layer 8, and a pit for placing the bolster 5 is reserved on the cement stabilized macadam mat layer 8, so that the surface of the bolster 5 is flush with the surface of the cement stabilized macadam mat layer 8. Meanwhile, a first butt strap 3 and a second butt strap 4 are placed on the top surface of the sleeper beam 5, one end, far away from the sleeper beam 5, of the first butt strap 3 is fixedly connected with the abutment 1 through a connecting steel bar 31, the second butt strap 4 is placed on the surface, far away from the first butt strap 3, of the sleeper beam 5, and a telescopic gap 71 is reserved between the first butt strap 3 and the second butt strap 4.
Meanwhile, as shown in fig. 2, the same joining strap 6 is provided on the first strap 3 and the second strap 4, the joining strap 6 covers the expansion gap 71, the two side bottoms of the joining strap 6 are integrally formed with the bar-shaped protruding blocks 74, the two bar-shaped protruding blocks 74 are respectively located on the first strap 3 and the second strap 4, the surfaces of the first strap 3 and the second strap 4 are both provided with the bar-shaped grooves 73 for the bar-shaped protruding blocks 74 to be inserted, the width of each bar-shaped groove 73 is greater than that of each bar-shaped protruding block 74, and the distance exists between the two sides of each bar-shaped protruding block 74 and the side wall of each bar-shaped groove 73.
Referring to fig. 1, a waterproof geotextile 11 is laid on the top surface connecting part of the first butt strap 3 and the abutment 1, so that the water infiltration from the gap between the first butt strap 3 and the abutment 1 is reduced, the local void of the roadbed 9 is slowed down, and a pavement layer 2 is horizontally and continuously laid on the first butt strap 3, the second butt strap 4 and the connecting butt strap 6, so that the bridge is smoothly communicated with the pavement layer 2. In addition, still pour pitch mastic 12 in the gap between first attachment strap 3 and abutment 1, pitch mastic 12 can be through its flexible bonding effect, has guaranteed the articulated characteristic of first attachment strap 3 and abutment 1, noise when can reducing first attachment strap 3 and rotate with the damping mode again.
When the first butt strap 3 and the second butt strap 4 expand with heat and contract with cold, the expansion gap 71 can provide the cyclic displacement formed by the expansion with heat and contract with cold of the first butt strap 3 and the second butt strap 4, so that the surface of the pavement layer 2 is not easy to crack, and the vehicle passing condition of the pavement is influenced. In addition, through the grafting cooperation of bar lug 74 and bar recess 73, make linking up access board 6 and connect first access board 3 and second access board 4, prevent that second access board 4 from breaking away from first access board 3 and taking place horizontal migration, and sleeper 5 bears first access board 3 and second access board 4 simultaneously, when the road bed 9 takes place inhomogeneous the subsidence, first access board 3 and second access board 4 can rotate respectively on sleeper 5 and subside, the condition that first access board 3 and second access board 4 take place the built on stilts atress of cantilever has been reduced, thereby make first access board 3 and second access board 4 difficult fracture.
For further making the connection of first butt strap 3 and second butt strap 4 more stable, refer to fig. 2, anchor has anchor rope 61 on joining butt strap 6, anchor rope 61 wears to locate among flexible gap 71, and the vertical extension anchor of the afterbody of anchor rope 61 is on sleeper beam 5 for first butt strap 3 and second butt strap 4 have good longitudinal connection stability, when foundation 9 takes place to subside, first butt strap 3 and second butt strap 4 can subside in step better, make pavement layer 2 can have more smoothly slope subsides smoothly more smoothly.
In this embodiment, as shown in fig. 2, the expansion gap 71 may be filled with a foam 72, the foam can prevent cement or asphalt material from entering the expansion gap 71 when the pavement layer 2 is poured, so as to facilitate smooth cyclic expansion and contraction displacement of the first access board 3 and the second access board 4, the foam 72 is preferably a polyurethane foam, and the polyurethane foam has good waterproof and moisture-proof properties, so as to reduce the influence of rainwater infiltration on the roadbed 9.
In addition, as shown in fig. 2, felt 75 is laid between the bottom surface of the two side edges of the joining strap 6 and the top surfaces of the first strap 3 and the second strap 4, the thickness of the felt 75 is 2cm, the felt 75 can make the joining strap 6 adapt to the micro rotation of the first strap 3 and the second strap 4, so that the first strap 3 and the second strap 4 still have good sealing performance with the joining strap 6 after relatively rotating, and a certain waterproof effect is achieved.
The implementation principle of the abutment butt strap structure of the road and bridge engineering of the embodiment of the application is as follows: connect first access board 3 and second access board 4 interval through linking up access board 6, when making the road bed 9 take place inhomogeneous settlement, first access board 3 and second access board 4 can incline at sleeper beam 5 respectively and rotate the settlement, reduce the condition that takes place the unsettled bearing of first access board 3 and second access board 4, the atress of first access board 3 and second access board 4 has been improved, thereby prolong the life of first access board 3 and second access board 4, in addition, first access board 3 and second access board 4 can be at flexible gap 71 mesocycle flexible displacement, the condition that the fracture takes place for pavement layer 2 has been reduced, make the vehicle travel more smoothly.
The above are all preferred embodiments of the present application, and the present embodiment is only explained for the present application, and the protection scope of the present application is not limited by this, 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. The utility model provides an abutment butt strap structure of road and bridge engineering, includes abutment (1) and road bed (9), its characterized in that, be provided with first butt strap (3), second butt strap (4), sleeper beam (5) and link up butt strap (6) on road bed (9), the one end of first butt strap (3) is passed through connecting reinforcement (31) and is connected with abutment (1), the one end that abutment (1) was kept away from in first butt strap (3) is taken and is established a side surface of sleeper beam (5), the one end of second butt strap (4) is taken and is established a side surface of keeping away from in sleeper beam (5) first butt strap (3), first butt strap (3) with leave flexible gap (71) between second butt strap (4), butt strap (6) link up and establish on first butt strap (3) and second butt strap (4) and cover flexible gap (71), the bottom ends of two sides of the connecting butt strap (6) are provided with strip-shaped convex blocks (74), strip-shaped grooves (73) with the width larger than that of the strip-shaped convex blocks (74) are formed in positions, corresponding to the strip-shaped convex blocks (74), of the first butt strap (3) and the second butt strap (4), and the strip-shaped convex blocks (74) are inserted into the strip-shaped grooves (73).
2. The abutment strap structure of road and bridge engineering according to claim 1, characterized in that anchor cables (61) are arranged in the telescopic slots (71), and the anchor cables (61) connect the connecting straps (6) and the sleeper beams (5).
3. The abutment strap structure of road and bridge engineering according to claim 1, wherein the expansion gap (71) is filled with foam (72).
4. The abutment strap structure of a road and bridge construction according to claim 1, wherein a felt (75) is provided between the bottom surface of both side edges of the engagement strap (6) and the top surface of the first strap (3) and the second strap (4).
5. The abutment strap structure of road and bridge engineering according to claim 1, characterized in that waterproof geotextile (11) is laid at the junction of the first strap (3) and the top of the abutment (1).
6. The abutment strap structure of a road and bridge engineering according to claim 1, characterized in that asphalt mastic (12) is poured between the contact surfaces of the first strap (3) and the abutment (1).
7. The abutment strap structure of a road and bridge engineering according to claim 1, wherein a cement stabilized macadam cushion (8) is laid on the first strap (3), the second strap (4) and the roadbed (9) below the sleeper beams (5).
8. An abutment strap structure for road and bridge works according to claim 7, characterized in that the bottom of the cement stabilized macadam mat (8) is lined with geogrid (81).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120776846.XU CN214831856U (en) | 2021-04-15 | 2021-04-15 | Abutment butt strap structure of road and bridge engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120776846.XU CN214831856U (en) | 2021-04-15 | 2021-04-15 | Abutment butt strap structure of road and bridge engineering |
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| CN214831856U true CN214831856U (en) | 2021-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506190A (en) * | 2022-10-16 | 2022-12-23 | 西安建工绿色建筑集团有限公司 | Road is assembled to precast concrete |
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2021
- 2021-04-15 CN CN202120776846.XU patent/CN214831856U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506190A (en) * | 2022-10-16 | 2022-12-23 | 西安建工绿色建筑集团有限公司 | Road is assembled to precast concrete |
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Address after: 528133 building 11, Hekou Wenta Road, southwest Street, Sanshui District, Foshan City, Guangdong Province Patentee after: 291 Nanfang Geological Environment Engineering (Guangdong) Co.,Ltd. Address before: 528133 building 11, Hekou Wenta Road, southwest Street, Sanshui District, Foshan City, Guangdong Province Patentee before: Southern Engineering Corporation of nuclear industry |