CN210886953U - Bridge and culvert abutment - Google Patents
Bridge and culvert abutment Download PDFInfo
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- CN210886953U CN210886953U CN201921531689.5U CN201921531689U CN210886953U CN 210886953 U CN210886953 U CN 210886953U CN 201921531689 U CN201921531689 U CN 201921531689U CN 210886953 U CN210886953 U CN 210886953U
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Abstract
The utility model relates to the technical field of bridge construction, and discloses a bridge abutment back, which comprises a road filling foundation and a grid, wherein one side of the road filling foundation is provided with a bridge abutment, and the bridge abutment extends to one side close to the road filling foundation to form a bearing platform; a filling layer is laid between the soil filling subgrade and the abutment; a first geogrid is laid in the fill layer; the middle parts of the bridge abutment and the road filling subgrade are provided with first fixing piles; one side of the soil filling subgrade is provided with two second fixing piles; the second fixing piles are symmetrically arranged in the width direction of the soil filling roadbed; the bottoms of the first fixing pile and the second fixing pile are inserted into the interior of the soil filling roadbed; bosses are arranged on the first fixing pile and the second fixing pile; the supporting platform is provided with a butt strap; the butt strap is respectively provided with a first mounting hole and a second mounting hole; a pavement layer is laid on the upper end surface of the butt strap; one side of the road surface layer is provided with a drainage device. The utility model has the advantages of it is following and effect: the structure can effectively reduce the sedimentation possibility after the table back is backfilled, and is stable and reliable in structure.
Description
Technical Field
The utility model relates to a bridge construction technical field, in particular to bridge and culvert abutment back of body.
Background
The abutment back refers to a section of roadbed one side or two sides of which are connected with the main body roadbed. The section of roadbed is connected with the main roadbed and the culvert bridge abutment body. The left and right sides of the bridge head approach and the bridge abutment street and river city are different-property road surface systems, one side is a double-layer structure system consisting of a bridge surface layer at the upper part of the bridge abutment and a rigid bridge abutment, the bridge head approach and the left and right sides of the bridge abutment street and river city are not easy to compress, the other side is a multi-layer structure system consisting of a roadbed and a road surface structure, the bridge head approach and the bridge abutment are greatly different in structural rigidity, the foundation settlement is extremely small under the general condition, the formed road surface structure has certain compression deformation under the self-weight action, and water seepage is easy to occur due to the fact that a road roller cannot be pressed and a gap is formed at the side where a soil body is connected with concrete, so that the bridge head jump is.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bridge abutment back of body, it can reduce the settlement possibility after the abutment back of body backfills effectively, and stable in structure is reliable to prior art exists not enoughly.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a bridge culvert abutment comprises a soil filling subgrade and a grid, wherein one side of the soil filling subgrade is provided with an abutment, the top of the abutment is provided with a bridge surface layer, and a supporting platform extends to one side close to the soil filling subgrade; a filling layer is laid between the soil filling subgrade and the abutment; a first geogrid is paved in the fill layer; a plurality of first geogrids are laid at intervals along the height direction of the filling layer; the middle parts of the bridge abutment and the road filling subgrade are provided with first fixing piles; two second fixing piles are arranged on one side of the road filling foundation, which is far away from the abutment; the first fixing pile and the second fixing pile are both vertically arranged; the second fixing piles are symmetrically arranged in the width direction of the soil filling roadbed; the bottoms of the first fixing pile and the second fixing pile are inserted into the interior of the soil filling roadbed; bosses are arranged on the first fixing pile and the second fixing pile; the top surface of the boss is flush with the top surface of the bearing platform; the supporting platform is provided with a butt strap; the butt strap is respectively provided with a first mounting hole and a second mounting hole which are matched with the outer surface of the first fixed pile and the outer surface of the second fixed pile; the first fixing pile penetrates through the first mounting hole and fixedly connects the boss with the butt strap through a bolt; the second fixing pile penetrates through the second mounting hole and fixedly connects the boss with the butt strap through a bolt; a pavement layer is laid on the upper end surface of the butt strap; and one side of the pavement layer, which is far away from the abutment, is provided with a drainage device.
By adopting the technical scheme, the supporting platform, the first fixing pile and the second fixing pile are arranged, so that the butt strap can be supported, a pavement layer is well supported, the integral platform back is not easy to fall, a supporting and buffering effect is realized on passing vehicles, and the backfilled platform back is more stable and is not easy to loosen; by arranging the first fixing piles and the second fixing piles, the butt strap can be well supported, and the rigidity of the overall structure of the roadbed and the road surface is increased; the lug bosses and the bolts are arranged to further fix the butt strap, so that the butt strap is not easy to tilt and cracks are generated on a pavement structure; set up first mounting hole and second mounting hole on the attachment strap, also spacing moving about the attachment strap for the more firm of attachment strap installation. The arrangement of the drainage device is beneficial to discharging rainwater entering the back filled with the water, erosion and damage to a soil layer are reduced, and therefore water seepage of the back can be effectively prevented, and the possibility of settlement of the back is reduced. The boss is formed by pouring concrete, the chemical bolt is required to be fixed, the chemical bolt resists pulling under the combined action of bond stress and mechanical occlusion force between the chemical bolt and the concrete and resists shearing by the bolt, when the attachment strap and the boss are connected and fixed through the chemical bolt, firstly, a drill bit is used for drilling, after dust in a hole is removed, a steel brush is used for brushing the hole wall, then, a medicament is put into the hole, a screw is inserted, and hardening and curing are carried out, so that the boss and the attachment strap are fixed through the chemical bolt, and the shearing resistance of the chemical bolt is improved.
The utility model is further arranged that the pavement layer comprises a first clay layer laid above the butt strap, a waterproof layer laid above the first clay layer, a fine grain type concrete layer laid above the waterproof layer, and an asphalt layer laid above the fine grain type concrete layer; the drainage device comprises a water baffle arranged above the roadbed, a water outlet arranged on the water baffle, a water outlet pipe communicated with the water outlet and pre-embedded in the roadbed, and a drainage channel communicated with the other end of the water outlet pipe and pre-embedded in the roadbed part; the water baffle is vertically arranged on one side of the road surface layer, which is far away from the abutment; and a filter screen is arranged at the water outlet.
By adopting the technical scheme, the waterproof layer is arranged, so that accumulated water is prevented from further permeating into the fill layer to cause foundation settlement or collapse, the accumulated water permeating into the pavement layer is favorably drained into the drainage channel, the clay layer is arranged, the waterproof layer is bonded with the first clay layer, the cohesiveness of the whole structure is ensured, the pavement layer and the butt strap can form a firm whole, and cracks and shearing deformation are not easy to occur; set up fine grain formula concrete layer, select the pitch that the space is little, strengthen the compaction of pavement layer, be favorable to preventing ponding infiltration, holistic scour resistance can be strong for the platform back of the body is difficult for taking place to subside and leads to the bridge jump phenomenon. The drainage pipe is arranged and is obliquely arranged, so that accumulated water can be drained quickly to a drainage channel; the filter screen is arranged, so that soil fine particles are not easy to flow out along with accumulated water to cause soil loosening.
The utility model is further arranged that two ends of the first geogrid are provided with fixing plates; a plurality of first anchor bolts are embedded in the end face, close to the pavement layer, of the abutment; the first anchor bolts are arranged at intervals along the height direction of the abutment; a first mounting plate is arranged at one end of the first anchor bolt, which is far away from the abutment; one side of the first mounting plate, which is far away from the abutment, is provided with a first mounting groove matched with the fixing plate; the fixing plate is inserted into the first mounting groove and then fixed through a positioning bolt; a second anchor bolt is arranged on one side, close to the abutment, of the first fixing pile and one side, close to the abutment, of the second fixing pile; the second anchor bolts are arranged at intervals along the height direction of the first fixing pile; a second mounting plate is arranged on one side, close to the abutment, of the second anchor bolt; a second mounting groove is formed in one side, close to the bridge abutment, of the second mounting plate; the end part of the first geogrid, which is far away from the abutment, is inserted into the second mounting groove and is fixed through a positioning bolt; the end parts of two adjacent first geogrids are connected through a connecting plate.
Through adopting above-mentioned technical scheme, lay the soil of good bottom, through getting into first mounting groove with the fixed plate cartridge in to fix through positioning bolt, make first geogrid can be strained, do not have the fold, coordinated the deflection between each part of filling layer structure, higher to the overall structure steadiness of soil, difficult emergence subsides the phenomenon of collapsing.
The utility model is further arranged that the waterproof layer is arranged from bottom to top in an inclined way towards the direction close to the abutment; one side of the waterproof layer, which deviates from the bridge abutment, is aligned with the water outlet.
Through adopting above-mentioned technical scheme, set the waterproof layer to the slope form for the ponding of infiltration can flow along the slope to the one side that is equipped with drainage device, and then can discharge the ponding of infiltration fast, can not influence the solidity of the platform back of the body of backfilling.
The utility model discloses further set up to, laid the second geogrid between pitch layer and the particulate formula concrete layer.
Through adopting above-mentioned technical scheme, set up the second geogrid, be favorable to guaranteeing the structural stability of road surface layer for road surface layer structure tamps more, is difficult for taking place to subside the phenomenon.
The utility model is further arranged that the first geogrid is fixed on the soil filling layer through a plurality of U-shaped steel nails; the second geogrid is fixed on the fine grain formula concrete layer through a plurality of U shaped steel nail.
Through adopting above-mentioned technical scheme, set up U type steel nail, be favorable to further consolidating first geogrid and second geogrid for platform back overall structure is more firm.
The utility model is further arranged that the position of the butt strap departing from the abutment is provided with a clamping interface matched with the water baffle; the length direction of the clamping interface is parallel to the width direction of the access board; the lower end of the water baffle is inserted into the soil filling subgrade.
Through adopting above-mentioned technical scheme, set up the joint mouth, be convenient for install the breakwater, in the breakwater was favorable to preventing that the back of a platform deviates from the surface ponding infiltration of abutment one side to the back of a platform, avoided the ponding infiltration to lead to soil property loose and take place the back of a platform settlement phenomenon.
The utility model discloses further set up to, one deck second clay layer has been laid between bridge surface course and the road surface course.
Through adopting above-mentioned technical scheme, lay the second clay layer between bridge floor layer and road surface layer for the linkage between platform back and the bridge floor layer is better, is difficult for producing the crack, is difficult for infiltration ponding, makes overall structure's prevention of seepage water effect better, is difficult for taking place the phenomenon that the platform back subsides.
To sum up, the utility model discloses a beneficial technological effect does:
1. the lug bosses and the bolts are arranged to further fix the butt strap, so that the butt strap is not easy to tilt and cracks are generated on a pavement structure, the first mounting hole and the second mounting hole are formed in the butt strap, the left and right movement of the butt strap is limited, the butt strap is more stably mounted, and a backfilled table back is more stable and is not easy to loosen;
2. the first geogrid can be tensioned without wrinkles, deformation of all parts of the soil filling layer structure is coordinated, the stability of the whole soil structure is higher, and the phenomenon of settlement and collapse is not easy to occur;
3. the arrangement of the drainage device is beneficial to discharging rainwater entering the back filled with the water, erosion and damage to a soil layer are reduced, and therefore water seepage of the back can be effectively prevented, and the possibility of settlement of the back is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
fig. 2 is a schematic view of an installation position of a first fixing pile and a second fixing pile of the embodiment;
fig. 3 is a schematic view of a first geogrid mounting structure of the embodiment;
FIG. 4 is an enlarged schematic view of A in FIG. 3;
FIG. 5 is an enlarged schematic view of B in FIG. 3;
FIG. 6 is an enlarged schematic view of C in FIG. 2;
fig. 7 is an enlarged schematic view of D in fig. 2.
Reference numerals: 1. filling a soil roadbed; 11. a first spud pile; 111. a boss; 112. a second anchor bolt; 113. a second mounting plate; 114. a second mounting groove; 12. a second spud pile; 2. an abutment; 21. a bridge deck layer; 22. a first anchor bolt; 221. a first mounting plate; 213. a first mounting groove; 23. a second clay layer; 3. a support platform; 31. a butt strap; 311. a first mounting hole; 312. a second mounting hole; 313. a card interface; 4. filling a soil layer; 41. a first geogrid; 411. a fixing plate; 413. positioning the bolt; 5. a pavement layer; 51. a first clay layer; 52. a waterproof layer; 53. a fine grain type concrete layer; 54. a second geogrid; 55. an asphalt layer; 6. a drainage device; 61. a water baffle; 62. a water discharge opening; 63. a drain pipe; 7. a connecting plate; 71. and a third mounting groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the bridge culvert abutment back comprises a soil filling subgrade 1 and a soil filling layer 4 filled between the soil filling subgrade 1 and the bridge abutment 2. One side of the soil filling subgrade 1 close to the bridge abutment 2 is of a multi-layer step structure, and one end of the soil filling layer 4 connected with the soil filling subgrade 1 is of a multi-layer step structure matched with the soil filling subgrade 1. The top of the abutment 2 is provided with a bridge surface layer 21, one side of the abutment 2 close to the road bed filling 1 is extended with a supporting platform 3, and the top of the supporting platform 3 is lower than the top of the abutment 2. The first geogrid 41 is laid in the fill 4 in a flat manner, and a plurality of the first geogrids 41 are laid at intervals in the height direction of the fill 4.
As shown in fig. 2, a first fixing pile 11 is installed in the middle of the bridge abutment 2 and the soil filling subgrade 1, two second fixing piles 12 are installed on one side of the soil filling subgrade 1 away from the bridge abutment 2, and the two second fixing piles 12 are symmetrically arranged in the width direction of the soil filling subgrade 1. First spud pile 11 and second spud pile 12 are all vertical, and are bored concrete pile structure. The bottoms of the first fixing pile 11 and the second fixing pile 12 are inserted into the soil filling subgrade 1, the first fixing pile 11 and the second fixing pile 12 are both prefabricated with a boss 111, and the top surface of the boss 111 is flush with the top surface of the bearing platform 3 (shown in fig. 1).
As shown in fig. 4, fixing plates 411 are installed at both ends of the first geogrid 41. A plurality of first anchor bolts 22 are embedded in the end surface of the bearing platform 3 close to the soil filling layer 4, and the first anchor bolts 22 are arranged at intervals along the height direction of the bearing platform 3. The welding of the one end that first crab-bolt 22 deviates from abutment 2 has first mounting panel 221, and first mounting panel 221 deviates from one side of abutment 2 and offers the first mounting groove 213 with fixed plate 411 looks adaptation.
As shown in fig. 5 and 6, a plurality of second anchor bolts 112 are embedded in the first fixing pile 11 and the second fixing pile 12, the second anchor bolts 112 embedded in the first fixing pile 11 are arranged at intervals in the height direction of the first fixing pile 11, and the second anchor bolts 112 embedded in the second fixing pile 12 are arranged at intervals in the height direction of the second fixing pile 12. A second mounting plate 113 is welded to a side of the second anchor bolt 112 close to the bearing platform 3 (as shown in fig. 3), and a second mounting groove 114 adapted to the fixing plate 411 is formed in a side of the second mounting plate 113 close to the bridge abutment 2. The fixing plates 411 at two ends of the first geogrid 41 are respectively inserted into the corresponding first mounting groove 213 (as shown in fig. 4) and the second mounting groove 114 and fixed by the positioning bolts 413, the first geogrid 41 is fixed and then laid on the top of the filler 4, and is in a tightened state after being fixed on the filler 4 by a plurality of U-shaped steel nails.
As shown in fig. 2 and 7, an end portion of the first geogrid 41 installed on the second fixing pile 12, which is away from the second fixing pile 12, is fixed by a connecting plate 7, third mounting grooves 71 matched with the fixing plates 411 are formed in two ends of the connecting plate 7, one end of the connecting plate 7 is fixed to an end portion, close to the bearing platform 3 (shown in fig. 3), of the first geogrid 41 installed on the second fixing pile 12, and the other end of the connecting plate is connected to an end portion, away from the bearing platform 3, of the first geogrid 41 installed between the bearing platform 3 and the first fixing pile 11.
As shown in fig. 3, the supporting platform 3 is provided with an attachment plate 31, the attachment plate 31 is provided with a first mounting hole 311 adapted to the outer surface of the first fixing pile 11, the attachment plate 31 is further provided with a second mounting hole 312 adapted to the outer surface of the second fixing pile 12, the first fixing pile 11 passes through the first mounting hole 311 and fixedly connects the boss 111 and the attachment plate 31 through a bolt, and the second fixing pile 12 passes through the second mounting hole 312 and fixedly connects the boss 111 and the attachment plate 31 through a bolt.
As shown in fig. 1, a pavement layer 5 is laid on the upper end surface of the butt strap 31. A second clay layer 23 is laid at the junction of the bridge surface layer 21 and the pavement layer 5. The pavement layer 5 includes a first clay layer 51 laid on the upper side of the attachment plate 31, a waterproof layer 52 laid on the upper side of the first clay layer 51, a fine concrete layer 53 laid on the upper side of the waterproof layer 52, and an asphalt layer 55 laid on the upper side of the fine concrete layer 53. The waterproof layer 52 is disposed to be inclined from bottom to top in a direction approaching the abutment 2. Preferably, the first clay layer 51 and the second clay layer 23 both adopt SBS modified asphalt. The SBS modified asphalt is prepared by taking base asphalt as a raw material, adding a certain proportion of SBS modifier, uniformly dispersing SBS in the asphalt by methods of shearing, stirring and the like, simultaneously adding a certain proportion of special stabilizer to form SBS blending material, and modifying the asphalt by utilizing good physical properties of SBS.
A second geogrid 54 is laid between the asphalt layer 55 and the fine concrete layer 53, and the second geogrid 54 is fixed on the fine concrete layer 53 through a plurality of U-shaped steel nails.
And a drainage device 6 is arranged on one side of the road surface layer 5, which is far away from the bridge abutment 2. The drainage device 6 includes a water guard 61 installed above the roadbed, a drain opening 62 opened in the water guard 61, a drain pipe 63 communicating the drain opening 62 with the roadbed, and a drainage channel communicating the other end of the drain pipe 63 with the roadbed portion. The drainage channel is horizontally arranged in the road-filling foundation 1 and is away from the abutment 2. The position of the abutment 31 departing from the abutment 2 is provided with a clamping interface 313 matched with the water baffle 61, the length direction of the clamping interface 313 is parallel to the width direction of the abutment 31, and the water baffle 61 penetrates through the clamping interface 313 and the lower end of the water baffle is inserted into the soil filling subgrade 1. The drainage opening 62 is provided with a filter screen, and one side of the waterproof layer 52, which is far away from the abutment 2, is aligned with the drainage opening 62.
When the device is used, the road bed 1 is excavated from a position far away from the bridge abutment 2, and one side of the road bed 1 close to the bridge abutment 2 is of a multi-layer step structure. A pit-shaped groove is formed between the soil filling subgrade 1 and the bridge abutment 2, a first fixing pile 11 is fixed at a position close to the middle part in the groove, two second fixing piles 12 are installed at one side of the soil filling subgrade 1, which is far away from the bridge abutment 2, and the two second fixing piles 12 are symmetrically arranged relative to the width direction of the soil filling subgrade 1, so that the bottoms of the first fixing pile 11 and the second fixing pile 12 are inserted into the soil filling subgrade 1. And (4) backfilling the soil layer 4, laying a layer of first geogrids 41 at intervals, fixing two ends of each first geogrid 41 on the bearing platform 3 and the first fixing pile 11 respectively, tensioning the first geogrids 41, and fixing the first geogrids 41 on the soil layer 4 by using U-shaped steel nails. After the filling soil layer 4 is backfilled until the upper end surface of the filling soil layer is flush with the bearing platform 3, the butt strap 31 is installed above the filling soil layer 4, so that one side of the butt strap 31 is lapped above the bearing platform 3, and the other end of the butt strap is close to the tail end, away from the bridge abutment 2, of the filling soil foundation 1. The first fixing pile 11 and the second fixing pile 12 penetrate the first mounting hole 311 and the second mounting hole 312, respectively, and are fixed by bolts. After the butt strap 31 is fixed, the water baffle 61 is nailed into the road bed 1 layer from the clamping port 313 on the butt strap 31, and then a first clay layer 51 is laid on the butt strap 31. After the paving, a second clay layer 23 is paved on one side of the bridge deck 21 close to the butt strap 31. And finally, a waterproof layer 52, a fine-grain concrete layer 53, a second geogrid 54 and an asphalt layer 55 are laid on the first clay layer 51 in sequence.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a bridge and culvert platform back of body, includes road-fill foundation (1), grid, road-fill foundation (1) one side is equipped with abutment (2), abutment (2) top is equipped with bridge surface layer (21), characterized by: a supporting platform (3) extends from the bridge abutment (2) to one side close to the soil filling subgrade (1); a filling soil layer (4) is laid between the soil filling subgrade (1) and the abutment (2); a first geogrid (41) is paved in the soil filling layer (4); a plurality of first geogrids (41) are laid at intervals along the height direction of the filling layer (4); a first fixing pile (11) is arranged in the middle of the bridge abutment (2) and the soil filling subgrade (1); one side of the soil filling subgrade (1) departing from the bridge abutment (2) is provided with two second fixing piles (12); the first fixing pile (11) and the second fixing pile (12) are both vertically arranged; the second fixing piles (12) are symmetrically arranged in the width direction of the road filling foundation (1); the bottoms of the first fixing pile (11) and the second fixing pile (12) are inserted into the soil filling roadbed (1); the first fixing pile (11) and the second fixing pile (12) are respectively provided with a boss (111); the top surface of the boss (111) is flush with the top surface of the bearing platform (3); the supporting platform (3) is provided with a butt strap (31); a first mounting hole (311) and a second mounting hole (312) which are matched with the outer surface of the first fixing pile (11) and the outer surface of the second fixing pile (12) are respectively formed in the butt strap (31); the first fixing pile (11) penetrates through the first mounting hole (311) and fixedly connects the boss (111) with the access plate (31) through a bolt; the second fixing pile (12) penetrates through the second mounting hole (312) and fixedly connects the boss (111) with the access plate (31) through a bolt; a pavement layer (5) is laid on the upper end surface of the butt strap (31); and a drainage device (6) is arranged on one side of the road surface layer (5) departing from the bridge abutment (2).
2. A bridge abutment back according to claim 1, wherein: the pavement layer (5) comprises a first clay layer (51) laid above the butt strap (31), a waterproof layer (52) laid above the first clay layer (51), a fine grain type concrete layer (53) laid above the waterproof layer (52), and an asphalt layer (55) laid above the fine grain type concrete layer (53); the drainage device (6) comprises a water baffle (61) arranged above the roadbed, a water outlet (62) formed in the water baffle (61), a water drainage pipe (63) communicated with the water outlet (62) and pre-buried in the roadbed, and a drainage channel communicated with the other end of the water drainage pipe (63) and pre-buried at the bottom of the roadbed; the water baffle (61) is vertically arranged on one side, away from the bridge abutment (2), of the road surface layer (5); a filter screen is arranged at the position of the water discharge opening (62).
3. A bridge abutment back according to claim 1, wherein: fixing plates (411) are arranged at two ends of the first geogrid (41); a plurality of first anchor bolts (22) are embedded in the end face, close to the pavement layer (5), of the bridge abutment (2); the first anchor bolts (22) are arranged at intervals along the height direction of the abutment (2); a first mounting plate (221) is arranged at one end of the first anchor bolt (22) departing from the abutment (2); one side, which is far away from the bridge abutment (2), of the first mounting plate (221) is provided with a first mounting groove (213) matched with the fixing plate (411); the fixing plate (411) is inserted into the first mounting groove (213) and then fixed through a positioning bolt (413); one sides of the first fixing pile (11) and the second fixing pile (12) close to the bridge abutment (2) are provided with second anchor bolts (112); the second anchor bolts (112) are arranged at intervals along the height direction of the first fixing pile (11); a second mounting plate (113) is arranged on one side, close to the abutment (2), of the second anchor bolt (112); a second mounting groove (114) is formed in one side, close to the bridge abutment (2), of the second mounting plate (113); the end part of the first geogrid (41) departing from the bridge abutment (2) is inserted into the second mounting groove (114) and is fixed through a positioning bolt (413); the ends of two adjacent first geogrids (41) are connected through a connecting plate (7).
4. A bridge abutment back according to claim 2, wherein: the waterproof layer (52) is obliquely arranged from bottom to top in the direction close to the abutment (2); the side of the waterproof layer (52) facing away from the bridge abutment (2) is aligned with the drainage opening (62).
5. A bridge abutment back according to claim 2, wherein: and a second geogrid (54) is laid between the asphalt layer (55) and the fine-grain concrete layer (53).
6. A bridge and culvert abutment back as claimed in claim 5, wherein: the first geogrid (41) is fixed on the filling layer (4) through a plurality of U-shaped steel nails; the second geogrid (54) is fixed on the fine grain type concrete layer (53) through a plurality of U-shaped steel nails.
7. A bridge abutment back according to claim 1, wherein: a clamping interface (313) matched with the water baffle (61) is formed in the position, deviating from the abutment (2), of the butt strap (31); the length direction of the clamping interface (313) is parallel to the width direction of the access board (31); the lower end of the water baffle (61) is inserted into the soil filling subgrade (1).
8. A bridge abutment back according to claim 1, wherein: and a second clay layer (23) is laid between the bridge surface layer (21) and the pavement layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921531689.5U CN210886953U (en) | 2019-09-12 | 2019-09-12 | Bridge and culvert abutment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921531689.5U CN210886953U (en) | 2019-09-12 | 2019-09-12 | Bridge and culvert abutment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210886953U true CN210886953U (en) | 2020-06-30 |
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ID=71320175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921531689.5U Active CN210886953U (en) | 2019-09-12 | 2019-09-12 | Bridge and culvert abutment |
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| Country | Link |
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| CN (1) | CN210886953U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073537A (en) * | 2021-04-25 | 2021-07-06 | 王拴保 | Bridge approach structure of highway engineering and construction method thereof |
| CN116377781A (en) * | 2023-05-22 | 2023-07-04 | 河北交投路桥建设开发有限公司 | Culvert bench back roadbed treatment construction method |
-
2019
- 2019-09-12 CN CN201921531689.5U patent/CN210886953U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073537A (en) * | 2021-04-25 | 2021-07-06 | 王拴保 | Bridge approach structure of highway engineering and construction method thereof |
| CN113073537B (en) * | 2021-04-25 | 2022-03-01 | 王拴保 | Bridge approach structure of highway engineering and construction method thereof |
| CN116377781A (en) * | 2023-05-22 | 2023-07-04 | 河北交投路桥建设开发有限公司 | Culvert bench back roadbed treatment construction method |
| CN116377781B (en) * | 2023-05-22 | 2023-08-25 | 河北交投路桥建设开发有限公司 | Culvert bench back roadbed treatment construction method |
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