阅读说明：本技术 一种变形可调节的桥头搭板结构 (Bridgehead butt strap structure with adjustable warp ) 是由 王瑞金 程小亮 王阳 赵宇 于 2019-12-02 设计创作，主要内容包括：本发明公开了一种变形可调节的桥头搭板结构,包括承载系统和变形支撑系统,承载系统包括由上至下依次布置的顶部承载板和底部固定板,变形支撑系统布置于顶部承载板和底部固定板之间。可有效的消除变形和沉降产生的高差和错台,有效的防治桥头跳车病害,提高道路桥梁的使用性能；本发明结构简单,应用型强,材料耐久性好,实用性强,装置维修更换方便,经济性好。(The invention discloses a deformation-adjustable bridge head butt strap structure which comprises a bearing system and a deformation supporting system, wherein the bearing system comprises a top bearing plate and a bottom fixing plate which are sequentially arranged from top to bottom, and the deformation supporting system is arranged between the top bearing plate and the bottom fixing plate. The height difference and slab staggering caused by deformation and settlement can be effectively eliminated, the bumping at the bridge head can be effectively prevented and treated, and the service performance of the road and bridge is improved; the invention has the advantages of simple structure, strong application type, good material durability, strong practicability, convenient maintenance and replacement of the device and good economical efficiency.)

1. The utility model provides a first butt strap structure of adjustable warp which characterized in that, includes bearing system and deformation braced system, and bearing system is including the top loading board and the bottom fixed plate that arrange from top to bottom in proper order, and deformation braced system arranges between top loading board and bottom fixed plate.

2. The bridge head strap structure with adjustable deformation of claim 1, wherein the deformation supporting system comprises a hinge supporting member and a plurality of liftable supporting columns, the upper end of the hinge supporting member is hinged with the top loading plate, the lower end of the hinge supporting member is connected with the bottom fixing plate, the upper end of the liftable supporting column is connected with the top loading plate, and the liftable supporting column is connected with the bottom fixing plate through threads.

3. The adjustable bridge end strap structure of claim 2, wherein the top loading plate and the bottom fixing plate are both provided with a plurality of slots, the inner wall of the slot of the top loading plate is provided with a limiting reinforcing ring, the slot of the bottom fixing plate is provided with a threaded sleeve, the upper end of the liftable supporting upright post is sleeved in the limiting reinforcing ring, and the lower end of the liftable supporting upright post is sleeved with the threaded sleeve through threads; the liftable support post is provided with a stiffening tray, and the stiffening tray is connected with the bottom surface of the top bearing plate.

4. The deformation-adjustable bridge end strap structure according to claim 3, wherein a rubber filler is arranged between the lower end of the liftable support post and the bottom of the threaded sleeve.

5. The adjustable bridge end strap structure of claim 2, wherein the upper end of the hinge support member is hinged to a hinge seat fixed on the top loading plate, the bottom fixing plate is provided with a limiting groove, and the lower end of the hinge support member is disposed in the limiting groove.

6. The deformation-adjustable bridge end strap structure of claim 5, wherein a rubber cushion is disposed between the lower end of the hinge support and the limiting groove.

7. The deformation adjustable gap bridge construction of claim 1, wherein the bottom surface of the top bearing plate is provided with a deformation coordinating vibration damping plate, and the cavity between the top bearing plate and the bottom fixing plate is provided with a flexible filler.

8. The deformation-adjustable bridge end strap structure of claim 1, wherein the top bearing plate and the bottom fixing plate are cast-in-place or prefabricated high performance reinforced concrete structures with holes.

9. The deformation-adjustable bridge end strap structure as claimed in claim 1 or 7, wherein a platform back filler is arranged below the bottom fixing plate, a drainage sand cushion layer is arranged between the bottom fixing plate and the platform back filler, and pre-buried perforated pipes are arranged in the drainage sand cushion layer.

10. The deformation adjustable bridge end attachment structure as claimed in claim 1, wherein one end of the bearing system is connected to the abutment and the other end is connected to the pavement structure, an expansion joint is provided between the bearing system and the abutment, and a waterproof filler is provided in the expansion joint.

Technical Field

The invention relates to the technical field of road engineering, in particular to a deformation-adjustable bridge head butt strap structure.

Background

In the use process of a road, because the deformation of a bridge structure is inconsistent with that of a roadbed and a road surface, a staggered platform and a height difference are often formed at the joint of a road and a bridge, and when a vehicle passes through, the impact vibration is caused by the unevenness of the road surface, so that the phenomenon of bumping at the bridge head occurs, and the driving safety of the vehicle and the service performance of the road are seriously influenced.

Relevant researches at home and abroad show that the disease is caused mainly by overlarge difference between the filling rigidity and the modulus of the bridge structure and the roadbed, the bridge structure is made of rigid materials such as reinforced concrete and the like in the road and bridge construction and use processes, the foundation is made of pile foundations, and the deformation and settlement amount of the pile foundations are relatively small; the road structure is mostly filled with flexible and semi-rigid materials such as earth and stone fillers, and the deformation and settlement are large, so that obvious slab staggering occurs at the joint of the road and the bridge, the vertical displacement and deformation difference of two sides is large, and the phenomenon of vehicle jumping at the bridge head is caused.

Due to the difference of the respective working principle and working characteristics of the road and bridge structures, the adopted materials are difficult to unify, and the deformation and settlement are difficult to coordinate, so the problem of vehicle bump at the bridge head is difficult to thoroughly solve.

In the actual engineering, set up the bridgehead attachment strap and be the simple effective, utilize extensive treatment measure of alleviating the bridgehead problem of jumping, nevertheless current bridgehead attachment strap structure is mostly rigid structure, can't adjust self deflection according to the road bridge settlement difference, and the ability of coordinating the difference deformation of both sides is limited, is difficult to satisfy the requirement of road bridge linking section dynamic adjustment.

Disclosure of Invention

The invention aims to solve the technical problems that aiming at the defects in the prior art, the invention provides the bridge head butt strap structure with adjustable deformation, which can effectively eliminate the height difference and the slab staggering generated by deformation and settlement, effectively prevent and control the bumping at the bridge head and improve the service performance of a road bridge; the invention has the advantages of simple structure, strong application type, good material durability, strong practicability, convenient maintenance and replacement of the device and good economical efficiency.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a first butt strap structure of adjustable bridge warp, includes bearing system and deformation braced system, and bearing system is including the top loading board and the bottom fixed plate that arrange from top to bottom in proper order, and deformation braced system arranges between top loading board and bottom fixed plate.

According to the technical scheme, the deformation supporting system comprises the hinged supporting piece and the plurality of liftable supporting stand columns, the upper end of the hinged supporting piece is hinged to the top bearing plate, the lower end of the hinged supporting piece is connected with the bottom fixing plate, the upper ends of the liftable supporting stand columns are connected with the top bearing plate, and the liftable supporting stand columns are connected with the bottom fixing plate through threads.

According to the technical scheme, a plurality of slotted holes are preset in the top bearing plate and the bottom fixing plate, a limiting reinforcing ring is pre-embedded in the inner wall of the slotted hole of the top bearing plate, a threaded sleeve is arranged in the slotted hole of the bottom fixing plate, the upper end of the liftable supporting upright post is sleeved in the limiting reinforcing ring, and the lower end of the liftable supporting upright post is sleeved with the threaded sleeve through threads; the lifting support upright post is provided with a stiffening tray, and the stiffening tray is connected and contacted with the bottom surface of the top bearing plate; and a supporting and lifting function for the top bearing plate is formed.

According to the technical scheme, the slotted hole is a circular slotted hole.

According to the technical scheme, the rubber filler is arranged between the lower end of the lifting support upright post and the bottom of the threaded sleeve.

According to the technical scheme, the upper end of the hinged support piece is hinged with the hinged seat, the hinged seat is fixedly arranged on the top bearing plate, the hinged seat is embedded into the top bearing plate, the bottom fixing plate is provided with the limiting groove, and the lower end of the hinged support piece is arranged in the limiting groove.

According to the technical scheme, a buffer rubber pad is arranged between the lower end of the hinged support piece and the limiting groove.

According to above-mentioned technical scheme, articulated support piece is prefabricated steel member, liftable support post is prefabricated steel structure bolt.

According to the technical scheme, the bottom surface of the top bearing plate is provided with the deformation coordination vibration reduction plate, and the cavity between the top bearing plate and the bottom fixing plate is provided with the flexible filler.

According to the technical scheme, the flexible filler is made of a high polymer material.

According to the technical scheme, the deformation coordination damping plate is bonded and fixed with the top bearing plate through epoxy resin.

According to the technical scheme, the top bearing plate and the bottom fixing plate are of cast-in-place or prefabricated high-performance reinforced concrete structures with holes.

According to the technical scheme, the top bearing plate is of a precast beam plate structure.

According to the technical scheme, the table back filler is arranged below the bottom fixing plate, a drainage sand cushion layer is arranged between the bottom fixing plate and the table back filler, and pre-buried perforated pipes are distributed in the drainage sand cushion layer; the perforated pipe is used for draining water, the perforated pipe is transversely vertical to the longitudinal axis of a road, an outlet passes through retaining walls on two sides or a bridge conical slope, and the perforated pipe can be a PVC perforated pipe.

According to the technical scheme, one end of the bearing system is connected with the abutment, the other end of the bearing system is connected with the pavement structure, an expansion joint is arranged between the bearing system and the abutment, and waterproof filler is arranged in the expansion joint.

According to the technical scheme, the waterproof filler is asphalt bast.

According to the technical scheme, the slotted holes in the top bearing plate and the bottom fixing plate are longitudinally arranged at equal intervals, one row of slotted holes is transversely arranged to be one level, the central lines of the slotted holes are overlapped in the normal direction, and the bottom fixing plate is fixed with the table back corbel through bolts and rivets.

The invention also provides a construction method of the deformation-adjustable bridge end butt strap structure, which comprises the following specific steps:

(1) filling a platform back: filling the abutment back filler to a specified elevation, filling a drainage sand cushion layer, fixing and embedding the PVC drainage perforated pipe, leveling and compacting.

(2) Preparing a component: according to the design standards of road grade, traffic load and the like, the size specifications of each component of the bridge head butt strap are determined by combining with mechanical calculation, the limiting rings, the threaded sleeves and the hinge seats are embedded, the limiting grooves of the hinge support pieces are reserved, and prefabrication of the top bearing plate and the bottom fixing plate is completed.

(3) And (3) mounting a bottom fixing plate: and hoisting the prefabricated bottom fixing plate to a drainage sand cushion layer, overlapping the prefabricated bottom fixing plate with the abutment back corbel of the bridge abutment, reserving an expansion joint, and driving bolts and rivets into the abutment back corbel.

(4) And (3) mounting a deformation support system: cushion rubber pads are firstly filled in the bottom plate limiting grooves, and then the hinged supporting pieces are installed and fixed. Establish rubber filler bottom the fixed plate screw thread sleeve of bottom, later twist the support post at different levels, rotate the support post and tentatively adjust the support post elevation at different levels, make the stand top elevation at different levels unanimous on the whole.

(5) Installing flexible filler: and filling flexible fillers in the cavities of the bottom fixing plate and the deformation supporting system.

(6) Installing a top bearing plate: the installation warp and coordinate the shock attenuation board, penetrates support posts at all levels through predetermineeing the hole groove, is fixed in on the tray of putting more energy into of support post, warp and coordinate the shock attenuation board upper surface and brush the epoxy adhesive, hoist and mount top loading board, penetrates support posts at all levels through predetermineeing the hole groove, and the bottom surface is coordinated the shock attenuation board top surface with warping and bonds, and articulated seat is linked with articulated supporter plush copper and is jointed.

(7) Initial elevation positioning: and twisting the support columns at all levels, and adjusting the top elevation of the top bearing plate to level the top surface of the top bearing plate, wherein the top elevation is the same as the elevation of the road and the bridge, and the longitudinal slope is the same as the longitudinal slope of the road.

(8) And (3) deformation dynamic adjustment: after the road and the bridge are used for a period of time and the height difference and the slab staggering appear at the current stage of the road and the bridge, the lifting support columns at all stages are screwed, the top surface elevation of the bridge head butt strap is adjusted, and the height difference and the slab staggering are eliminated.

(9) Equipment maintenance and replacement: when the member is damaged, the member is prefabricated again according to the construction method and replaced.

The invention has the following beneficial effects:

the bridgehead butt strap structure has strong self active deformation capability, can effectively eliminate height difference and slab staggering generated by deformation and settlement, effectively prevent and control bridgehead vehicle jumping diseases, and improve the service performance of road bridges; the invention has the advantages of simple structure, strong application type, good material durability, strong practicability, convenient maintenance and replacement of the device and good economical efficiency.

Drawings

FIG. 1 is a schematic structural view of a deformation-adjustable bridge end strap structure according to an embodiment of the invention;

in the drawings, 1-abutment; 2-expansion joint; 3-a hinged seat; 4-a hinged support; 5-lifting support columns; 5 a-a stiffening tray; 5 b-a threaded joint; 6-top carrier plate; 7-deformation coordination damping plate; 8-a flexible filler; 9-embedding a limiting ring; 10-pavement structure; 11-rubber filler; 12-bottom dead plate; 13-table back filler; 14-draining sand cushion; 15-a threaded sleeve; 16-bolt rivet; 17-table back corbel; 18-a perforated tube; 19-a limit groove.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1, the invention provides a deformation-adjustable bridge head strap structure in one embodiment, which comprises a bearing system and a deformation support system, wherein the bearing system comprises a top bearing plate 6 and a bottom fixing plate 12 which are sequentially arranged from top to bottom, and the deformation support system is arranged between the top bearing plate 6 and the bottom fixing plate 12.

Further, the deformation supporting system comprises a hinged supporting piece 4 and a plurality of liftable supporting stand columns 5, the upper ends of the hinged supporting piece 4 are hinged to the top bearing plate 6, the lower ends of the hinged supporting piece 4 are connected with the bottom fixing plate 12, the upper ends of the liftable supporting stand columns 5 are connected with the top bearing plate 6, and the liftable supporting stand columns 5 are connected with the bottom fixing plate 12 through threads.

Furthermore, a plurality of slotted holes are preset on the top bearing plate 6 and the bottom fixing plate 12, a limiting reinforcing ring is pre-embedded on the inner wall of the slotted hole of the top bearing plate 6, a threaded sleeve 15 is arranged in the slotted hole of the bottom fixing plate 12, the upper end of the liftable supporting upright post 5 is sleeved in the limiting reinforcing ring, and the lower end of the liftable supporting upright post 5 is sleeved with the threaded sleeve 15 through threads; the lifting support upright post 5 is provided with a stiffening tray 5a, and the stiffening tray 5a is connected and contacted with the bottom surface of the top bearing plate 6; forming a supporting and lifting function for the top bearing plate 6.

Further, the slot hole is a circular slot hole.

Further, a rubber filler 11 is arranged between the lower end of the liftable support upright post 5 and the bottom of the threaded sleeve 15.

Further, articulated 4 upper ends of articulated support piece are articulated to have articulated seat 3, and articulated seat 3 sets firmly on top loading board 6, and articulated seat 3 buries top loading board 6, is equipped with spacing groove 19 on the bottom fixed plate 12, and the lower extreme of articulated support piece 4 sets up in spacing groove 19.

Further, a cushion rubber pad is arranged between the lower end of the hinge support member 4 and the limiting groove 19.

Further, articulated support piece 4 is prefabricated steel member, liftable support post 5 is prefabricated steel structure bolt.

Further, the bottom surface of the top carrier plate 6 is provided with a deformation coordinating vibration damping plate, and the cavity between the top carrier plate 6 and the bottom fixing plate 12 is provided with a flexible filler 8.

Further, the material of the flexible filler 8 is a high polymer material.

Further, the deformation coordinating shock absorbing plate 7 is adhesively fixed with the top carrier plate 6 by epoxy resin.

Further, the top bearing plate 6 and the bottom fixing plate 12 are cast-in-place or prefabricated high-performance reinforced concrete structures with holes.

Further, the top loading plate 6 is a precast beam plate structure.

Further, a table back filler 13 is arranged below the bottom fixing plate 12, a drainage sand cushion layer 14 is arranged between the bottom fixing plate 12 and the table back filler 13, and pre-buried perforated pipes 18 are distributed in the drainage sand cushion layer 14; the perforated pipe 18 is used for draining water, the perforated pipe 18 is transversely vertical to the longitudinal axis of a road, an outlet passes through two retaining walls or bridge conical slopes, and the perforated pipe 18 can be made of PVC.

Further, one end of the bearing system is connected with the abutment 1, the other end of the bearing system is connected with the pavement structure 10, an expansion joint 2 is arranged between the bearing system and the abutment 1, and waterproof fillers are arranged in the expansion joint 2.

Further, the waterproof filler is asphalt bast.

Further, the slotted holes in the top bearing plate 6 and the bottom fixing plate 12 are longitudinally arranged at equal intervals, a row of slotted holes is transversely arranged to be a first level, the central lines of the slotted holes are overlapped in the normal direction, and the bottom fixing plate 12 is fixed with the table back corbel through bolts and rivets.

The invention also provides a construction method of the deformation-adjustable bridge end butt strap structure, which comprises the following specific steps:

(1) filling a platform back: filling the abutment 1 with the back filler to a specified elevation, filling a drainage sand cushion 14, fixing and embedding the PVC drainage perforated pipe, leveling and compacting.

(2) Preparing a component: according to the design standards of road grade, traffic load and the like, the size specification of each component of the bridge head butt strap is determined by combining mechanical calculation, the limiting ring 9, the threaded sleeve 15 and the hinge seat 3 are embedded in advance, the limiting groove 19 of the hinge support piece 4 is reserved, and prefabrication of the top bearing plate 6 and the bottom fixing plate 12 is completed.

(3) Bottom dead plate 12 installation: and hoisting the prefabricated bottom fixing plate 12 to a drainage sand cushion layer 14, overlapping the prefabricated bottom fixing plate with the abutment 1 and the abutment back corbel, reserving the expansion joint 2, and driving bolts and rivets into the abutment back corbel.

(4) And (3) mounting a deformation support system: cushion rubber pads are firstly filled in the bottom plate limiting grooves 19, and then the hinged support pieces 4 are installed and fixed. The bottom of the threaded sleeve 15 of the bottom fixing plate 12 is provided with a rubber filler 11, then all levels of supporting columns are screwed in, and the supporting columns are rotated to primarily adjust the elevations of all levels of supporting columns, so that the elevations at the tops of all levels of the supporting columns are generally consistent.

(5) Flexible filler 8 installation: the cavity of the bottom dead plate 12 and the deformation support system is filled with a flexible filler 8.

(6) The top bearing plate 6 is mounted: the installation warp and coordinate shock attenuation board 7, penetrates support post at all levels through predetermineeing the hole groove, on being fixed in support post's stiffening tray 5a, warp and coordinate shock attenuation board 7 upper surface brush epoxy adhesive, hoist and mount top loading board 6, penetrates support post at all levels through predetermineeing the hole groove, and the bottom surface is with warp and coordinate shock attenuation board 7 top surface bonding, links articulated seat 3 and the joint of articulated supporter plush copper.

(7) Initial elevation positioning: and twisting the support columns at all levels, and adjusting the top elevation of the top bearing plate 6 to level the top surface of the top bearing plate 6, wherein the top elevation is the same as the elevation of the road and the bridge, and the longitudinal slope is the same as the longitudinal slope of the road.

(8) And (3) deformation dynamic adjustment: after the road and the bridge are used for a period of time and the height difference and the slab staggering appear at the current stage of the road and the bridge, the lifting support columns at all stages are screwed, the top surface elevation of the bridge head butt strap is adjusted, and the height difference and the slab staggering are eliminated.

(9) Equipment maintenance and replacement: when the member is damaged, the member is prefabricated again according to the construction method and replaced.

The working principle of the invention is as follows:

as shown in the attached drawings, the deformation-adjustable bridge head butt strap structure is positioned above a drainage sand cushion layer 14, a drainage perforated pipe 18 is embedded in the sand cushion layer at the end close to an abutment 1, and a bottom fixing plate 12 is fixed with an abutment back bracket 17 by using a bolt rivet 16 after being installed in place; the hinged support body 4 is arranged in the reserved limiting groove 19; screwing the threaded head threaded joints of the supporting columns 5 at all levels into threaded sleeves 15 pre-embedded in the bottom fixing plate, and arranging rubber fillers 11 below the threaded sleeves 15; after the flexible filler 8 is laid, the top ends of all levels of supporting columns 5 penetrate through the deformation coordination damping plate 7, sit in the stiffening tray 5a, and then lift the top bearing plate 6, the top ends of all levels of supporting columns 5 penetrate through the pre-embedded limiting ring 9 of the top bearing plate, the hinged support body 4 is connected with the hinged seat 3, and the deformation coordination damping plate 7 and the top bearing plate 6 are bonded by epoxy resin; twisting each stage of support upright post 5 to adjust the elevation of the top bearing plate 6; asphalt bast fibers are filled in the expansion joints 2; a pavement structure layer 10 is paved.

The sand cushion adopts medium coarse sand with the thickness of 3-5 cm, and the perforated pipe 18 in the sand cushion close to the abutment 1 end is adopted8cm perforated PVC pipe, and the outside is wrapped with anti-filtration geotextile.

The bottom fixing plate 11 adopts a double-layer reinforced concrete structure with the length of 20cm, the width of 12cm, the height of 24cm and the concrete label of C50, 3 rows of longitudinally pre-embedded DN40 galvanized steel threaded sleeves 15 with the wall thickness of 3mm, 22 threaded sleeves are transversely arranged in each row, and the specifications of the threaded sleeves are matched with those of the supporting upright columns.

The supporting upright posts all adopt nominal diameters

40mm, 600mm long 40# steel shaft, rolling screw thread at bottom, arranging inner hexagonal groove at top, welding steel disc 22cm below top, welding 6 triangles between disc and supporting columnA steel toggle plate. The hinge seat 3 is made of cast steel, the hinge support 4 is made of chrome vanadium steel, and the top of the hinge support is made into a hinge joint. The bottom plate limiting groove 19 is 2cm deep, and the plane size is matched with the base of the hinged support part 4.

The size of the top bearing plate 6 is 20cm in length, 12cm in width and 24cm in height, the double-layer reinforced concrete structure is adopted, the concrete is marked with the number C50, the embedded limiting ring 9 is a DN42 galvanized steel pipe, and the wall thickness is 3 mm. The deformation coordination damping plate 7 is made of plywood, and the thickness of the plate is 10 mm.

The flexible filler 8 is made of foam material, and the expansion joint 2 is filled with asphalt floc.

The bolt rivet is a 10.9-grade high-strength bolt, the outer diameter is 20mm, and the length is 400 mm.

Deformation adjustment: the embankment is solidified and settled for a period of time, the settlement amount of the embankment is obviously larger than that of the abutment, so that the height difference between the tail end of the access board and the top of the road surface is caused, at the moment, the support upright posts are screwed through the inner hexagonal grooves by using the screwdriver, the height of the tail end of the access board is uniformly reduced, the deformation of the access board is adjusted, the wrong platform between the tail end of the access board and the top surface of the road surface structure is eliminated, and the problem of vehicle bump at the bridge head.

Maintenance and replacement: after the bridge head butt strap is used for a long time, if the plate surface is seriously abraded or excessively deformed, the structures such as the top bearing plate 6, the deformation coordination damping plate 7, the flexible filler 8 and the like are replaced, and the steps are the same as the above; when the deformation supporting system has a fault, the hinge parts 3 and 4 and the lifting supporting upright post 5 can be cleaned, lubricated, rustproof or replaced.

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.