CN109518558B - Device and method for preventing bridge head from jumping - Google Patents
Device and method for preventing bridge head from jumping Download PDFInfo
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- CN109518558B CN109518558B CN201811577823.5A CN201811577823A CN109518558B CN 109518558 B CN109518558 B CN 109518558B CN 201811577823 A CN201811577823 A CN 201811577823A CN 109518558 B CN109518558 B CN 109518558B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The invention relates to an anti-bridge-head vehicle-jumping device which comprises an elastic crawler arranged on a highway subgrade and a bridge base surface, wherein the belt surface of the elastic crawler is horizontal, the two ends of the elastic crawler are respectively connected with the highway subgrade and the bridge base surface into a whole, a buffer support is arranged on the lower belt surface of the elastic crawler, the buffer support is a hydraulic buffer cylinder, a piston rod is vertically arranged, the upper end of the piston rod of the buffer support is abutted against the elastic crawler, the elastic crawler is adopted to replace the traditional road surface of a bridge head, the occurrence of the phenomenon of bridge-head vehicle-jumping is overcome, the elastic crawler is fixed on the buffer support, the buffer support is convenient to detach, and the anti-bridge-jumping device can effectively realize rigid-flexible transition between the bridge table surface and an expansion joint as well as the road surface, so as to achieve the purpose of preventing the vehicle-jumping.
Description
Technical Field
The invention relates to the field of engineering construction, in particular to a device and a method for preventing a bridge head from jumping.
Background
The backfill position of the combined bench back of the road surface and the bridge has different degrees of settlement fracture (the settlement value is generally 10-30 cm, and some of the settlement values are even more than 60 cm), so that the vehicle can jump and impact when passing through, thereby causing additional impact load to the bridge culvert and the road surface, causing drivers and passengers to feel bumpy and uncomfortable, even causing the vehicle to slow down greatly, and serious traffic accidents (especially vehicle mechanical accidents) can be caused. Therefore, the problem of bridge head jumping has become an important factor for the engineering quality and cost of high-grade highways. The problem of bridge head vehicle jump is one of the problems which plague municipal administration engineering technicians. The problem of bridge head jumping is solved, and the bridge head jumping is an important task of municipal facility management departments;
the main reasons for the bridge head to jump are uneven settlement, abrupt rigidity change, vibration resistance of the vehicle speed and the vehicle itself, etc. In the case of urban road conditions, uneven settlement occurs at the joint between a flexible road and a rigid structure, and dislocation occurs. The bridge has differences in the composition materials, rigidity, strength, dilatability and the like of the roadbed and the road surface, and concentrated stress is easy to form when the joint of the bridge head is stressed. Under the actions of vehicle load, structural dead weight and natural factors, the bridge and the road are settled at the same time, but the settlement amounts of the bridge and the road are greatly different, the settlement amount of the road is far greater than that of the bridge, a stagger is formed, and bridge head jumping occurs during driving;
the damage of the bridge head jumping is mainly manifested by influencing the driving safety, reducing the driving speed, influencing the vehicle operation cost, accelerating the damage of bridges and pavements, and greatly influencing the operation of roads and bridges.
Disclosure of Invention
The invention aims at: the device and the method for preventing the bridge head from jumping can effectively avoid the problem of jumping due to uneven settlement at the joint between the flexible road and the rigid bridge structure, and ensure the safety of the vehicle during running.
The technical scheme adopted in the invention is as follows:
the utility model provides a prevent bridge head and jump car device, includes the elastic crawler that sets up at highway subgrade and bridge basal plane, the area face level and both ends of elastic crawler are connected as an organic wholely with highway subgrade and bridge basal plane respectively, the lower area face of elastic crawler sets up the buffering support ware, the buffering support ware is the vertical arrangement of hydraulic cushion jar and piston rod, the piston rod upper end and the elastic crawler of buffering support ware are supported.
The invention also has the following technical characteristics:
the elastic crawler belt is formed by hinging a plurality of unit hinge plates, and buffer supporters are arranged on the lower plate surfaces of the unit hinge plates.
And tensioning mechanisms are arranged at two ends of the elastic crawler, and are used for flattening the upper ends of the elastic crawler on the buffer support.
The highway subgrade is provided with first, second prefabricated foundation block respectively with the hookup location department of bridge basal plane, be provided with first tensioning slider on the first prefabricated foundation block, first tensioning slider constitutes length direction's adjustable cooperation with first prefabricated foundation block, be provided with the second tensioning slider on the second prefabricated foundation block, second tensioning slider constitutes length direction's adjustable cooperation with the second prefabricated foundation block.
The unit hinge plates at two ends of the elastic crawler are hinged with the connecting support plate, the connecting support plate is connected with one end of a tensioning steel wire, and the tensioning steel wire is connected with the first tensioning sliding block and the second tensioning sliding block respectively.
The first prefabricated foundation block and the second prefabricated foundation block are respectively provided with a first transition roller and a second transition roller in a rotating mode, the wheel cores of the first transition roller and the second transition roller are horizontal and perpendicular to the length directions of the first prefabricated foundation block and the second prefabricated foundation block, the second transition roller is arranged below the side of the first transition roller, and the tensioning steel wire respectively penetrates through the first transition roller and the second transition roller and is respectively connected with the first tensioning sliding block and the second tensioning sliding block.
The utility model discloses a tensioning roller, including tensioning roller, first tensioning slider, second tensioning slider, tensioning roller, first tensioning slider, second tensioning slider, reset torsion spring, the other end of first tensioning slider and second tensioning slider is articulated with one end of first, second connecting rod respectively, the other end of first, second connecting rod is articulated with the rod end of first, second connecting rod respectively, the tensioning roller rotation sets up on the vaulting pole, the both ends cover of vaulting pole is equipped with the reset torsion spring, the both ends of reset torsion spring are connected with the rod end of tensioning roller and vaulting pole respectively.
The first and second prefabricated foundation blocks are respectively provided with a first chute and a second chute, the first tensioning sliding block is arranged in the first chute in a sliding mode, the second tensioning sliding block is arranged in the second chute in a sliding mode, and the length directions of the first chute and the second chute are respectively parallel to the length directions of the first prefabricated foundation block and the second prefabricated foundation block.
The lower part of elastic crawler is provided with the rubber pad, the piston rod of buffering support ware supports with the rubber pad and leans on, the lower extreme of buffering support ware is fixed in the backup pad, the backup pad sets up on supporting embedded beam, the lower face of first, second prefabricated foundation block is provided with first, second gomphosis face respectively, first, second gomphosis is wavy and cooperates with highway subgrade and bridge basal plane respectively.
The invention discloses a method for preventing a bridge head from jumping, which comprises the following steps:
A. respectively reserving a sinking groove at the joint of the highway subgrade and the bridge basal plane, and respectively arranging a first prefabricated foundation block and a second prefabricated foundation block on the reserved sinking grooves;
B. the method comprises the steps of arranging a support embedded beam in a gap between a highway subgrade and a bridge base surface, fixing a buffer support on the support embedded beam, and fixing a rubber pad on the buffer support;
C. the two ends of the elastic crawler belt are respectively hinged with the connecting support plate, so that the connecting support plate is connected with one end of the tensioning steel wire, the other end of the tensioning steel wire is connected with the first tensioning sliding block and the second tensioning sliding block, and the first tensioning sliding block and the second tensioning sliding block are respectively connected with the tensioning roller through the first connecting rod and the second connecting rod, so that the elastic crawler belt is in a tensioning state;
D. asphalt is paved on the connection positions of the road subgrade and the bridge base surface and the first and second prefabricated foundation blocks and the upper beam surfaces of the first and second prefabricated foundation blocks, so that construction of the bridge head jump prevention device is completed.
Compared with the prior art, the invention has the beneficial effects that: the elastic crawler belt is adopted to replace the traditional bench back road surface, the phenomenon of bridge head jumping is overcome, the elastic crawler belt is fixed on the buffer support, the buffer support is convenient to detach, and the anti-jumping device can effectively realize rigid-flexible transition between the bridge bench surface and the expansion joint as well as the road surface, so that the purpose of preventing jumping is achieved.
Drawings
FIG. 1 is a top view of an anti-bridgehead ride;
FIG. 2 is a front view of the anti-bridgehead ride;
FIG. 3 is a front view of a highway subgrade and a first prefabricated foundation block;
FIG. 4 is a top view of the tension roller;
FIG. 5 is a top view of the unit hinge plate;
FIG. 6 is a front view of the unit hinge plate;
fig. 7 is a schematic view of the structure of the unit hinge plate mated with the damper support.
Detailed Description
Referring to fig. 1 to 7, the following details are given to the structural features of the bridge head anti-bouncing device:
the device for preventing the bridge head from jumping comprises an elastic crawler belt 30 arranged on a highway subgrade 10 and a bridge basal plane 20, wherein the belt surface of the elastic crawler belt 30 is horizontal, two ends of the elastic crawler belt are respectively connected with the highway subgrade 10 and the bridge basal plane 20 into a whole, a buffer support 40 is arranged on the lower belt surface of the elastic crawler belt 30, the buffer support 40 is a hydraulic buffer cylinder, a piston rod is vertically arranged, and the upper end of the piston rod of the buffer support 40 is abutted against the elastic crawler belt 30;
as shown in fig. 1 and 2, the elastic crawler 30 is arranged at the joint of the highway subgrade 10 and the bridge base 20, and the elastic support of the elastic crawler 30 is implemented by using the buffer support 40, so that the rigid-flexible transition between the abutment surface and the expansion joint as well as between the abutment surface and the road surface is effectively realized, and the purpose of preventing the vehicle from jumping is achieved.
In order to effectively support the passing vehicle, as shown in fig. 1 and 2, the elastic crawler 30 is formed by hinging a plurality of unit hinge plates 31, and buffer supporters 40 are arranged on the lower plate surfaces of the unit hinge plates 31;
the buffer support 40 realizes the elastic support of a plurality of unit hinge plates 31, when the passing vehicle passes through the elastic crawler belt, the unit hinge plates 31 realize the support of wheels which are arranged differently, and the unit hinge plates 31 at corresponding positions are elastically supported by the independent buffer support 40, so that the problem that the buffer 40 is easy to damage due to the fact that the buffer 40 is accepted and concentrated due to the integral elastic support can be effectively avoided, and the elastic crawler belt 30 is composed of a plurality of unit hinge plates 31, so that the elastic crawler belt can be conveniently replaced.
To avoid the problem that the elastic crawler 30 is easy to loose, as shown in fig. 2, two ends of the elastic crawler 30 are provided with tensioning mechanisms, and the tensioning mechanisms are used for flattening the elastic crawler 30 at the upper end of the buffer support 40;
utilize straining device to realize flattening to elastic track 30 for elastic track 30's unit hinge plate 31 and buffer support 40's piston rod are supported and are leaned on, thereby can make unit hinge plate 31's below face and buffer support 40's piston rod laminating all the time, avoid unit hinge plate 31 to appear the problem of vacancy support, improve elastic track 30's life, avoid elastic track 30 atress uneven and the problem of breaking that appears.
Specifically, in order to realize tensioning of the elastic crawler 30, a first prefabricated foundation block 11 and a second prefabricated foundation block 21 are respectively arranged at the connection position of the highway subgrade 10 and the bridge base surface 20, a first tensioning sliding block 12 is arranged on the first prefabricated foundation block 11, the first tensioning sliding block 12 and the first prefabricated foundation block 11 form adjustable coordination in the length direction, a second tensioning sliding block 22 is arranged on the second prefabricated foundation block 21, and the second tensioning sliding block 22 and the second prefabricated foundation block 21 form adjustable coordination in the length direction;
the first tensioning sliding block 12 and the second tensioning sliding block 22 are respectively arranged on the first prefabricated base block 11 and the second prefabricated base block 22 in a sliding manner, so that tensioning of the elastic crawler 30 is achieved, the lower plate surface of the unit hinge plate 31 of the elastic crawler 30 is always abutted against the piston rod end of the buffer support 40, effective support of the elastic crawler 30 is ensured, and the situation that a support gap exists in the elastic crawler 30 is avoided.
Specifically, in order to achieve the straightening and flattening of the elastic crawler 30, unit hinge plates 31 at two ends of the elastic crawler 30 are hinged to a connecting support plate 32, the connecting support plate 32 is connected to one end of a tensioning steel wire 33, and the tensioning steel wire 33 is connected to the first tensioning slider 12 and the second tensioning slider 22 respectively.
In order to flatten the elastic crawler 30, as shown in fig. 2, the first and second prefabricated foundation blocks 11 and 21 are respectively provided with a first transition roller 51 and a second transition roller 52 in a rotating manner, the wheel cores of the first and second transition rollers 51 and 52 are horizontal and perpendicular to the length direction of the first and second prefabricated foundation blocks 11 and 21, the second transition roller 52 is arranged below the lateral side of the first transition roller 51, and the tensioning steel wire 33 respectively passes through the first transition roller 51 and the second transition roller 52 and is respectively connected with the first tensioning slide block 12 and the second tensioning slide block 22;
the above-mentioned wiring manner of the tension steel wire 33 on the first transition roller 51 and the second transition roller 52 is combined with that shown in fig. 2, so that the connection position of the tension steel wire 33 and the connection support plate 32 is in a straightened state, and the elastic crawler 30 is in a flattened state all the time.
More specifically, the first tensioning slider 12 and the second tensioning slider 22 are hinged to one ends of the first and second connecting rods 13 and 23, the other ends of the first and second connecting rods 13 and 23 are connected to the tensioning roller 60, the roller body of the tensioning roller 60 is provided with a first and second supporting rods 63 and 62, the hinge joint between the first and second supporting rods 63 and 62 is an obtuse angle, the other ends of the first and second connecting rods 13 and 23 are hinged to the rod ends of the first and second supporting rods 63 and 62, the tensioning roller 60 is rotatably arranged on the supporting rod 63, two ends of the supporting rod 63 are sleeved with a reset torsion spring 64, and two ends of the reset torsion spring 64 are connected to the tensioning roller 60 and the rod ends of the supporting rod 63;
the support rod 63 is rotatably disposed on the support, as shown in fig. 4, the rotational position of the tension roller 60 is constant by using the reset torsion spring 64, when the elastic crawler 30 is in an uneven state, the first tension slider 12 and the second tension slider 22 are respectively located at different positions on the first prefabricated base block 11 and the second prefabricated base block 21, and after the vehicle walks, the positions of the first tension slider 12 and the second tension slider 22 are determined under the reset force of the reset torsion spring 64, so as to flatten the elastic crawler 30.
Further, the first and second prefabricated foundation blocks 11 and 21 are respectively provided with a first chute 111 and a second chute 211, the first tensioning slide block 12 is slidably arranged in the first chute 111, the second tensioning slide block 22 is slidably arranged in the second chute 211, and the length directions of the first chute 111 and the second chute 211 are respectively parallel to the length directions of the first and second prefabricated foundation blocks 11 and 21;
the first and second sliding grooves 111 and 211 are arranged, so that water flow can be effectively prevented from entering the positions of the first tensioning sliding block 12 and the second tensioning sliding block 22, rust on the positions is avoided, lubricating grease can be laid at the positions of the first and second sliding grooves 111 and 211, and sliding of the first tensioning sliding block 12 and the second tensioning sliding block 22 in the first and second sliding grooves 111 and 211 is conveniently realized.
In order to further realize elastic support of the elastic crawler 30, a rubber pad 70 is arranged below the elastic crawler 30, a piston rod of the buffer support 40 is abutted against the rubber pad 70, the lower end of the buffer support 40 is fixed on a support plate 41, the support plate 41 is arranged on a support embedded beam 80, the lower plate surfaces of the first prefabricated foundation block 11 and the second prefabricated foundation block 21 are respectively provided with a first embedded surface 112 and a second embedded surface 212, and the first embedded surface 112 and the second embedded surface 212 are wavy and are respectively matched with the highway subgrade 10 and the bridge basal surface 20;
the first and second engaging surfaces 112, 212 are wavy and respectively matched with the highway subgrade 10 and the bridge base 20, so that the firmness of the first and second prefabricated foundation blocks 11, 21 matched with the highway subgrade 10 and the bridge base 20 can be effectively improved, and the benefit of the first and second prefabricated foundation blocks 11, 21 is prevented from moving.
The method for preventing the bridge head from jumping comprises the following steps:
A. respectively reserving sinking grooves at the combination of the highway subgrade 10 and the bridge basal plane 20, and respectively arranging the first prefabricated foundation block 11 and the second prefabricated foundation block 21 on the reserved sinking grooves;
B. the method comprises the steps of arranging a support pre-buried beam 80 in a gap between a highway subgrade 10 and a bridge base surface 20, fixing a buffer support 40 on the support pre-buried beam 80, and fixing a rubber pad 70 on the buffer support 40;
C. the two ends of the elastic crawler 30 are respectively hinged with the connecting support plates 32, so that the connecting support plates 32 are connected with one end of the tensioning steel wire 33, the other end of the tensioning steel wire 33 is connected with the first tensioning slide block 12 and the second tensioning slide block 22, and the first tensioning slide block 12 and the second tensioning slide block 22 are respectively connected with the tensioning roller 60 through the first connecting rod 13 and the second connecting rod 23, so that the elastic crawler 30 is in a tensioning state;
D. asphalt is paved on the connection positions of the highway subgrade 10 and the bridge basal plane 20 and the first and second prefabricated foundation blocks 11 and 21 and the upper beam surfaces of the first and second prefabricated foundation blocks 11 and 21, so that the construction of the bridge head vehicle jump prevention device is completed.
During construction, firstly, reasonably setting the bridge and culvert structure, and setting the bridge and culvert structure to allow the problems of geological conditions, filling height, embankment length, filling sources, embankment settlement and the like of the roadbed filled by the back of the platform to be considered, and selecting proper bridge and culvert positions, spans and bridge and culvert rear protection engineering to avoid bridge and culvert with large river surface and small span as far as possible;
and secondly, reinforcing the foundation before the foundation is filled. The soft foundation is treated well, and is an important measure for controlling the jump of the bridge head, and the soft foundation treatment method, such as a drainage consolidation method, a soil replacement method, a vibration gravel pile method and the like, is an effective method at present. Can be applied according to actual conditions to improve the foundation performance, improve the bearing capacity of the foundation, reduce sedimentation, reduce the sedimentation difference between the bridge abutment and the embankment and avoid dislocation.
Thirdly, the quality of the filling is strictly controlled, and a water permeable material with a larger internal friction angle is filled behind the bridge abutment, so that the compaction quality is convenient to control, and the compression sedimentation of the roadbed is reduced; meanwhile, the filler with larger internal friction angle is also favorable for smoothly discharging the rainwater permeated in the gap of the bench back to the outside of the roadbed along the blind drain or the drain pipe.
In addition, the bridge head pavement is specially treated, and in order to smoothly and gradually transition in the longitudinal direction and the transverse direction, measures of arranging a sleeper beam, a butt strap and a thickening buried plate can be adopted by taking the differences of the bridge abutment and the abutment back pavement in the aspects of structure, materials, rigidity, flexibility, expansion and shrinkage and the like into consideration.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. The utility model provides a prevent bridgehead and jump car device which characterized in that: the elastic crawler belt comprises an elastic crawler belt (30) arranged on a highway subgrade (10) and a bridge basal plane (20), wherein the belt surface of the elastic crawler belt (30) is horizontal, two ends of the elastic crawler belt are respectively connected with the highway subgrade (10) and the bridge basal plane (20) into a whole, a buffer support (40) is arranged on the lower belt surface of the elastic crawler belt (30), the buffer support (40) is a hydraulic buffer cylinder, piston rods of the buffer support (40) are vertically arranged, and the upper ends of the piston rods of the buffer support (40) are abutted against the elastic crawler belt (30);
the elastic crawler belt (30) is formed by hinging a plurality of unit hinge plates (31), and buffer supporters (40) are arranged on the lower plate surfaces of the unit hinge plates (31);
tensioning mechanisms are arranged at two ends of the elastic crawler belt (30), and the tensioning mechanisms are used for flattening the upper ends of the elastic crawler belt (30) positioned on the buffer support (40);
the highway subgrade (10) and the bridge base surface (20) are respectively provided with a first prefabricated foundation block (11) and a second prefabricated foundation block (21), the first prefabricated foundation block (11) is provided with a first tensioning sliding block (12), the first tensioning sliding block (12) and the first prefabricated foundation block (11) form adjustable coordination in the length direction, the second prefabricated foundation block (21) is provided with a second tensioning sliding block (22), and the second tensioning sliding block (22) and the second prefabricated foundation block (21) form adjustable coordination in the length direction;
the unit hinge plates (31) at two ends of the elastic crawler belt (30) are hinged with the connecting support plates (32), the connecting support plates (32) are connected with one end of a tensioning steel wire (33), and the tensioning steel wire (33) is connected with the first tensioning sliding block (12) and the second tensioning sliding block (22) respectively;
the first prefabricated foundation block (11) and the second prefabricated foundation block (21) are respectively provided with a first transition roller (51) and a second transition roller (52) in a rotating mode, wheel cores of the first transition roller (51) and the second transition roller (52) are horizontal and perpendicular to the length direction of the first prefabricated foundation block (11) and the second prefabricated foundation block (21), the second transition roller (52) is arranged below the lateral side of the first transition roller (51), and the tensioning steel wire (33) respectively passes through the first transition roller (51) and the second transition roller (52) and is respectively connected with the first tensioning slide block (12) and the second tensioning slide block (22);
the device is characterized in that the first tensioning sliding block (12) and the second tensioning sliding block (22) are hinged with one ends of a first connecting rod and a second connecting rod (13 and 23) respectively, the other ends of the first connecting rod and the second connecting rod (13 and 23) are connected with a tensioning roller (60) respectively, first supporting rods (61) and second supporting rods (62) are arranged on the roller body of the tensioning roller (60), the hinge joint between the first supporting rods (61) and the second supporting rods (62) is an obtuse angle, the other ends of the first connecting rod and the second connecting rod (13) are hinged with the rod ends of the first supporting rods and the second supporting rods (61 and 62) respectively, the tensioning roller (60) is arranged on a supporting rod (63) in a rotating mode, a reset torsion spring (64) is sleeved at two ends of the supporting rod (63), and two ends of the reset torsion spring (64) are connected with the tensioning roller (60) and the rod ends of the supporting rod (63) respectively;
the first and second prefabricated foundation blocks (11, 21) are respectively provided with a first chute (111) and a second chute (211), the first tensioning sliding block (12) is arranged in the first chute (111) in a sliding mode, the second tensioning sliding block (22) is arranged in the second chute (211) in a sliding mode, and the length directions of the first chute (111) and the second chute (211) are respectively parallel to the length directions of the first prefabricated foundation block and the second prefabricated foundation block (11, 21).
2. The bridgehead anti-bump device according to claim 1, wherein: the lower part of elastic crawler belt (30) is provided with rubber pad (70), the piston rod of buffering support ware (40) supports with rubber pad (70), the lower extreme of buffering support ware (40) is fixed on backup pad (41), backup pad (41) set up on supporting embedded beam (80), the lower face of first, second prefabricated foundation block (11, 21) is provided with first, second gomphosis face (112, 212) respectively, first, second gomphosis face (112, 212) are wavy and cooperate with highway subgrade (10) and bridge base (20) respectively.
3. A method of using the bridgehead anti-bump apparatus of claim 1 or 2, characterized in that: the method comprises the following steps:
A. respectively reserving sinking grooves at the combination of the highway subgrade (10) and the bridge basal plane (20), and respectively arranging the first prefabricated foundation blocks (11) and the second prefabricated foundation blocks (21) on the reserved sinking grooves;
B. the method comprises the steps of arranging a support embedded beam (80) in a gap between a highway subgrade (10) and a bridge base surface (20), fixing a buffer support (40) on the support embedded beam (80), and fixing a rubber pad (70) on the buffer support (40);
C. the two ends of the elastic crawler belt (30) are respectively hinged with the connecting support plates (32), so that the connecting support plates (32) are connected with one end of the tensioning steel wire (33), the other end of the tensioning steel wire (33) is connected with the first tensioning slide block (12) and the second tensioning slide block (22), and the first tensioning slide block (12) and the second tensioning slide block (22) are respectively connected with the tensioning roller (60) through the first connecting rods and the second connecting rods (13 and 23), so that the elastic crawler belt (30) is in a tensioning state;
D. asphalt is paved on the connection positions of the highway subgrade (10) and the bridge base surface (20) and the first and second prefabricated foundation blocks (11, 21) and the upper beam surfaces of the first and second prefabricated foundation blocks (11, 21), so that the construction of the bridge head vehicle jump prevention device is completed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811577823.5A CN109518558B (en) | 2018-12-20 | 2018-12-20 | Device and method for preventing bridge head from jumping |
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| CN201811577823.5A CN109518558B (en) | 2018-12-20 | 2018-12-20 | Device and method for preventing bridge head from jumping |
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| CN109518558A CN109518558A (en) | 2019-03-26 |
| CN109518558B true CN109518558B (en) | 2023-05-23 |
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| CN112252159B (en) * | 2020-10-24 | 2022-08-23 | 惠州大亚湾市政基础设施有限公司 | Bridge and pavement integrated construction structure and construction method |
| CN113005879B (en) * | 2021-03-03 | 2021-11-02 | 顾轩波 | Highway bridge plate with prevent bumping car function |
| CN113512945B (en) * | 2021-04-20 | 2023-05-05 | 中交第三公路工程局有限公司 | Variable-rigidity splicing device and method for road bridge and road tunnel connecting section |
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| CN1201053C (en) * | 2003-05-09 | 2005-05-11 | 华南理工大学 | Chain transition device adapted for difference in settlement of building |
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| CN101892635B (en) * | 2010-08-11 | 2012-02-29 | 中交第四航务工程局有限公司 | Method for solving problem of vehicle bump at bridge head and structure thereof |
| CN202416158U (en) * | 2011-12-13 | 2012-09-05 | 王磊 | Self-adaptive hinged slab device for eliminating bump at bridge heads |
| CN104775351B (en) * | 2015-04-22 | 2016-06-01 | 兰州铁路局 | With the stake post framework spring assembly box-like bridge road transition section structure of abutment split |
| CN209353184U (en) * | 2018-12-20 | 2019-09-06 | 安徽开源路桥有限责任公司 | A kind of anti-bumping at bridge-head device |
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