CN109537440B

CN109537440B - Abutment approach structure

Info

Publication number: CN109537440B
Application number: CN201811413119.6A
Authority: CN
Inventors: 许国平
Original assignee: Ningbo Architectural Design And Research Institute Co ltd
Current assignee: Ningbo Jianyuan Construction Technology Consulting Co.,Ltd.
Priority date: 2018-11-23
Filing date: 2018-11-23
Publication date: 2021-07-06
Anticipated expiration: 2038-11-23
Also published as: CN109537440A

Abstract

The invention discloses an abutment approach structure, which comprises an abutment, a bridge deck and a road foundation, wherein the bridge deck is fixed on the abutment, a bearing seat is arranged on the abutment, an expansion joint is arranged between the bridge deck and the bearing seat, the bearing seat is provided with a mounting seat extending to the road foundation, and a rotating shaft is arranged in the mounting seat; the bridge bearing device is characterized by further comprising a guide plate, wherein one side of the guide plate, which is close to the bridge abutment, is connected with a connecting seat, the connecting seat is sleeved on the rotating shaft and is in rotating connection with the rotating shaft, one side of the connecting seat, which faces the bearing seat, is in a semicircular arc shape, and the bearing seat is provided with a semicircular arc sunken part matched with the connecting seat; the road foundation comprises a gravel stabilizing layer positioned at the bottom of the guide plate and a compact soil layer below the gravel stabilizing layer; when the guide plate is in a horizontal state, the upper surfaces of the bridge deck, the bearing seat, the connecting seat and the guide plate are flush. The invention can effectively relieve the problem of vehicle jumping of the conventional abutment.

Description

Abutment approach structure

Technical Field

The invention relates to the technical field of municipal bridge road construction, in particular to an abutment approach structure.

Background

In bridge diseases, the bridge head approach is easy to generate uneven settlement under the action of driving load, so that the joints of a plurality of bridge decks and the road surfaces of the approach are not smooth enough, and the vehicles can slightly or seriously jump when passing through the bridge head. The bump at the bridge head not only seriously affects the comfort of driving, reduces the driving speed of vehicles and the traffic capacity of roads, and affects the use of bridges and the service life of vehicles, but also greatly increases the maintenance cost of highways, even causes traffic accidents, generates adverse social influence, and becomes a problem which is urgently needed to be solved in the construction of high-grade highways.

Disclosure of Invention

The invention aims to provide an abutment approach structure which can effectively solve the problem of conventional abutment bumping.

The above object of the present invention is achieved by the following technical solutions:

a bridge approach structure comprises a bridge abutment, a bridge deck and a road foundation, wherein the bridge deck is fixed on the bridge abutment, a bearing seat is arranged on the bridge abutment, an expansion joint is arranged between the bridge deck and the bearing seat, the bearing seat is provided with a mounting seat extending to the road foundation, and a rotating shaft is arranged in the mounting seat; the bridge bearing device is characterized by further comprising a guide plate, wherein one side of the guide plate, which is close to the bridge abutment, is connected with a connecting seat, the connecting seat is sleeved on the rotating shaft and is in rotating connection with the rotating shaft, one side of the connecting seat, which faces the bearing seat, is in a semicircular arc shape, and the bearing seat is provided with a semicircular arc sunken part matched with the connecting seat; the road foundation comprises a gravel stabilizing layer positioned at the bottom of the guide plate and a compact soil layer below the gravel stabilizing layer; when the guide plate is in a horizontal state, the upper surfaces of the bridge deck, the bearing seat, the connecting seat and the guide plate are flush.

By adopting the technical scheme, when the vehicle drives through the structural road section for a long time, the bearing seat is fixed on the abutment, so that the settlement can not be generated. The guide plate is located above the road foundation, and one end of the guide plate is rotatably connected with the mounting seat through the connecting seat, so that when the guide plate is settled, the guide plate can only rotate downwards around the rotating shaft to generate integral inclination, and the vertical cliff type settlement which possibly occurs between the conventional bridge abutment and the road surface can not occur, and therefore, the traveling crane cannot be greatly influenced. In addition, one side of the connecting seat facing the bearing seat is in a semicircular arc shape, the bearing seat is provided with a semicircular arc depressed part matched with the connecting seat, when the connecting seat rotates downwards, one side of the connecting seat facing the bearing seat only rotates along the semicircular arc depressed part, and the height above the upper surface of the bearing seat cannot be raised, so that the problem that an access board is adopted as a guide track in the prior art and is easy to tilt when local settlement occurs is solved. Under the driving load, the road foundation is generated and subsides unavoidably, but the scheme is adopted, so that the driving road after the subsidence is generated is relatively smooth, and the problem of abutment bumping is effectively alleviated.

The invention is further configured to: the guide plate is of a reinforced concrete structure, and the connecting seat is of a steel structure; and one side of the connecting seat facing the guide plate is provided with a connecting steel bar.

Through adopting above-mentioned technical scheme, the reinforcing bar of drawing the board and the reinforcing bar of connecting seat are ligatured and are pour again for it is whole to draw board and connecting seat formation.

The invention is further configured to: the bearing seat is the steel construction, the mount pad is two, and one of them and bearing seat body coupling, another passes through bolted connection with the bearing seat.

Through adopting above-mentioned technical scheme, another mount pad can be dismantled to make things convenient for the connecting seat to be connected with the pivot.

The invention is further configured to: and one opposite side of the two mounting seats is provided with a sinking groove for fixing the rotating shaft.

Through adopting above-mentioned technical scheme, can fix the countershaft in heavy groove with the both ends of pivot are installed, easy to assemble.

The invention is further configured to: be equipped with vertical decurrent through-hole on the mount pad, the stock that extends to in the closely knit soil layer is worn to be equipped with by the through-hole, be equipped with on the stock and ooze the hole, it bonds with closely knit soil layer to fill concrete in the stock, the stock includes stopper, the stopper is contradicted with the mount pad.

Through adopting above-mentioned technical scheme, the stock can be taut with the mount pad to further improve the steadiness of bearing seat.

The invention is further configured to: the pavement foundation is also provided with a pavement layer, an indwelling seam is arranged between the pavement layer and the guide plate, a spring steel plate with an arc structure is connected between the pavement layer and the guide plate, and an arc opening of the spring steel plate is upward; the spring steel plate is that the polylith is upper and lower evenly distributed, the both ends of spring steel plate are pour respectively and are connected in leading board and road surface in situ.

By adopting the technical scheme, the relative settlement between the guide plate and the pavement layer can be reduced, when the load on the traveling crane acts on the guide plate, the stress on the side of the guide plate is transmitted to the pavement layer through the spring steel plate, and the pavement layer pulls the guide plate by virtue of the spring steel plate, so that the guide plate side is not easy to generate excessive settlement; and the spring steel plate has elasticity and has reset potential energy after being stressed, so that the settlement generated by the guide plate can be greatly weakened. And this spring steel sheet is located between drawing board and the road surface layer again, adopts this scheme to make the different road surface structures in these both sides can be fine the combination form comparatively smooth-going environment, helps reducing the influence that the difference of subsiding of both sides brought.

The invention is further configured to: and dense soil is backfilled in the retention seam.

Through adopting above-mentioned technical scheme, backfill closely knit soil in keeping somewhere the seam and can do water repellent to keeping somewhere the seam, reduce the influence of rain wash to the road foundation.

The invention is further configured to: the thickness of the gravel stabilizing layer below the guide plate is larger than that of the gravel stabilizing layer below the pavement layer.

Through adopting above-mentioned technical scheme, the side of leading the board is closer to the river, and the ground is softer, and the rubble stabilizing layer thickness that leads the board place side is great helps reducing the influence of uneven settlement between board and the road surface layer.

In conclusion, the beneficial technical effects of the invention are as follows:

1. under the effect of subsiding, above-mentioned structure can form comparatively smooth-going road surface, can effectively alleviate the problem of abutment jump.

2. The problem that the driving safety is influenced by the upwarp of the approach is avoided.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic top view of the present embodiment;

FIG. 3 is a schematic view of a structure of the connector housing according to the embodiment;

fig. 4 is a schematic view of the anchor rod structure of the embodiment.

Description of reference numerals: 1. an abutment; 2. a bridge deck; 3. a load bearing seat; 4. a connecting seat; 5. leading the plate; 6. a pavement layer; 7. a road foundation; 8. a gravel stabilizing layer; 9. compacting the soil layer; 10. an expansion joint; 11. a mounting seat; 12. a rotating shaft; 13. a bolt; 14. sinking a groove; 15. a semi-circular arc recess; 16. connecting reinforcing steel bars; 17. an anchor rod; 18. a through hole; 19. a limiting block; 20. keeping a seam; 21. a spring steel plate; 22. seep out of the hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (c);

an abutment approach structure is shown in figure 1 and comprises an abutment 1, a bridge deck 2, a bearing seat 3, a connecting seat 4, an approach plate 5, a pavement layer 6 and a pavement foundation 7; the road foundation 7 comprises a macadam stabilizing layer 8 at the bottom of the guide plate 5 and the pavement layer 6 and a compact soil layer 9 below the macadam stabilizing layer 8.

As shown in fig. 1-2, the bridge deck 2 and the bearing seat 3 are fixed on the bridge abutment 1, and an expansion joint 10 is arranged between the bridge deck 2 and the bearing seat 3. The bearing seat 3 is provided with a mounting seat 11 extending to the road foundation 7, a rotating shaft 12 is arranged in the mounting seat 11, and the connecting seat 4 is rotatably connected to the rotating shaft 12. The bearing seat 3, the connecting seat 4 and the rotating shaft 12 are all made of steel structures, two mounting seats 11 are provided, one of the mounting seats is integrally connected with the bearing seat 3, and the other mounting seat is connected with the bearing seat 3 through a bolt 13; the opposite sides of the two mounting seats 11 are provided with sunk grooves 14 for fixing the rotating shaft 12.

As shown in fig. 1 and 3, one side of the connecting seat 4 facing the bearing seat 3 is in a semi-arc shape, and the bearing seat 3 is provided with a semi-arc concave part 15 matched with the connecting seat 4; connecting seat 4 is connected with guide plate 5 formula as an organic whole, and guide plate 5 is reinforced concrete structure, and connecting reinforcement 16 is equipped with towards the one side of guide plate 5 to connecting seat 4. After the connecting base 4 is installed on the rotating shaft 12, the guide plate 5 steel bars are bound on the connecting steel bars 16, then a formwork is erected, and finally the guide plate 5 is formed by pouring. When the guide plate 5 is in a horizontal state, the upper surfaces of the bridge deck 2, the bearing seat 3, the connecting seats 4, the guide plate 5 and the pavement layer 6 are flush.

As shown in fig. 2 and 4, a vertical downward through hole 18 is formed in the mounting seat 11, an anchor rod 17 extending into the dense soil layer 9 is arranged in the through hole 18 in a penetrating manner, a seepage hole 22 is formed in the anchor rod 17, concrete is poured into the anchor rod 17 and is bonded with the dense soil layer 9, the anchor rod 17 comprises a limiting block 19, and the limiting block 19 is abutted against the mounting seat 11.

As shown in fig. 1, an indwelling seam 20 is arranged between the pavement layer 6 and the guide plate 5, a spring steel plate 21 with an arc structure is connected between the pavement layer 6 and the guide plate 5, and an arc opening of the spring steel plate 21 is upward; the spring steel plates 21 are uniformly distributed up and down, and two ends of each spring steel plate 21 are respectively connected into the guide plate 5 and the pavement layer 6 in a pouring manner; dense soil is backfilled in the retention seam 20, and the thickness of the gravel stabilizing layer 8 below the guide plate 5 is larger than that of the gravel stabilizing layer 8 below the pavement layer 6.

When the embodiment receives the driving load, the load-bearing seat 3 is fixed on the abutment 1, so that the settlement cannot be generated. The guide plate 5 is positioned above the road foundation 7, and one end of the guide plate is rotatably connected with the mounting seat 11 through the connecting seat 4, so that when the position of the guide plate 5 is settled, the guide plate 5 only rotates downwards around the rotating shaft 12 to generate integral inclination; in addition, one side of the connecting seat 4 facing the bearing seat 3 is in a semicircular arc shape, the bearing seat 3 is provided with a semicircular arc depressed part 15 matched with the connecting seat 4, and when the connecting seat 4 rotates downwards, one side of the connecting seat 4 facing the bearing seat 3 only rotates along the semicircular arc depressed part 15 and cannot be lifted to a height above the upper surface of the bearing seat 3; therefore, the driving road after settlement is still smooth, and the problem of 1-hop abutment can be effectively solved.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an abutment approach structure, includes abutment (1), bridge floor (2) and road foundation (7), on bridge floor (2) were fixed in abutment (1), its characterized in that: the bridge abutment (1) is provided with a bearing seat (3), an expansion joint (10) is arranged between the bridge deck (2) and the bearing seat (3), the bearing seat (3) is provided with a mounting seat (11) extending to a road foundation (7), and a rotating shaft (12) is arranged in the mounting seat (11); the bridge bearing is characterized by further comprising a leading plate (5), one side, close to the abutment (1), of the leading plate (5) is connected with a connecting seat (4), the connecting seat (4) is sleeved on the rotating shaft (12) and is in rotating connection with the rotating shaft (12), one side, facing the bearing seat (3), of the connecting seat (4) is in a semicircular arc shape, and the bearing seat (3) is provided with a semicircular arc sunken part (15) matched with the connecting seat (4); the road foundation (7) comprises a gravel stabilizing layer (8) positioned at the bottom of the guide plate (5) and a compact soil layer (9) below the gravel stabilizing layer (8); when the guide plate (5) is in a horizontal state, the upper surfaces of the bridge deck (2), the bearing seat (3), the connecting seat (4) and the guide plate (5) are flush; the guide plate (5) is of a reinforced concrete structure, and the connecting seat (4) is of a steel structure; one side of the connecting seat (4) facing the guide plate (5) is provided with a connecting steel bar (16); a pavement layer (6) is further arranged on the road foundation (7), an indwelling seam (20) is arranged between the pavement layer (6) and the guide plate (5), a spring steel plate (21) with an arc structure is connected between the pavement layer (6) and the guide plate (5), and an arc opening of the spring steel plate (21) is upward; the spring steel plates (21) are uniformly distributed up and down, and two ends of each spring steel plate (21) are respectively poured and connected into the guide plate (5) and the pavement layer (6); the bearing seat (3) is of a steel structure, and the number of the mounting seats (11) is two, wherein one of the mounting seats is integrally connected with the bearing seat (3), and the other mounting seat is connected with the bearing seat (3) through a bolt (13); one opposite side of the two mounting seats (11) is provided with a sinking groove (14) for fixing the rotating shaft (12); be equipped with vertical decurrent through-hole (18) on mount pad (11), anchor rod (17) that extend to in closely knit soil layer (9) are worn to be equipped with in through-hole (18), be equipped with on anchor rod (17) and ooze hole (22), it bonds with closely knit soil layer (9) to have poured the concrete in anchor rod (17), anchor rod (17) are including stopper (19), stopper (19) are contradicted with mount pad (11).

2. An abutment approach structure according to claim 1, wherein: dense soil is filled in the remaining seam (20).

3. An abutment approach structure according to claim 1, wherein: the thickness of the gravel stabilizing layer (8) below the guide plate (5) is larger than that of the gravel stabilizing layer (8) below the pavement layer (6).