CN114232472A - Highway concrete bridge expansion joint transition area repairing structure and construction method - Google Patents
Highway concrete bridge expansion joint transition area repairing structure and construction method Download PDFInfo
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- CN114232472A CN114232472A CN202210142690.9A CN202210142690A CN114232472A CN 114232472 A CN114232472 A CN 114232472A CN 202210142690 A CN202210142690 A CN 202210142690A CN 114232472 A CN114232472 A CN 114232472A
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- elastic filling
- pressing plate
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- 230000007704 transition Effects 0.000 title claims abstract description 31
- 239000004567 concrete Substances 0.000 title claims abstract description 25
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 53
- 238000004873 anchoring Methods 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims description 6
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 4
- 229920001971 elastomer Polymers 0.000 description 8
- 239000000806 elastomer Substances 0.000 description 7
- 239000010410 layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention discloses a repair structure and a construction method for a road concrete bridge expansion joint transition area, and relates to the technical field of bridge expansion joints, wherein two anchoring parts are fixedly connected with two beam ends of the bridge expansion joint in a one-to-one correspondence manner, an elastic filling part is arranged between the two anchoring parts in a sliding manner along the depth direction of the bridge expansion joint, a one-way clamping part is arranged between the elastic filling part and the anchoring parts and used for preventing the elastic filling part from sliding towards the lower part of the bridge expansion joint, the elastic unit elasticity acts on the elastic filling part towards the lower part of the expansion joint, a wear compensation mechanism comprises a trigger pressing plate and a transmission component, the trigger pressing plate is arranged on the anchoring parts in a moving manner along the depth direction of the expansion joint, the upper surface of the trigger pressing plate is aligned with the upper surface of the elastic filling part, and the trigger pressing plate is rolled and worn by a vehicle and moved downwards after the upper part of the elastic filling part is rolled and worn by the vehicle, the elastic filling piece is lifted towards the pavement of the bridge in a sliding mode through the transmission assembly to compensate abrasion.
Description
Technical Field
The invention relates to the technical field of bridge expansion joints, in particular to a repair structure and a construction method for a transition area of a road concrete bridge expansion joint.
Background
The bridge expansion joint is characterized in that the expansion joint is arranged between two beam ends of a bridge to meet the requirement of bridge deck deformation, the bridge expansion joint is used for adjusting displacement and connection between upper structures caused by vehicle load and bridge building materials, and the high-quality bridge expansion joint structure requires that a vehicle runs smoothly without sudden jump and noise, can prevent rainwater and garbage soil from permeating and blocking, and is simple and convenient to install, maintain and repair.
The bridge expansion joint transition area is also a structure which is easy to damage and wear and tear on a bridge road, and the bridge expansion joint transition area needs to be repaired after being damaged or worn and tear, so that the bridge road is recovered to be smooth. For example, the invention patent with the publication number of CN111455879B, which is named as the repair structure of the expansion joint transition area of the concrete bridge of the intelligent highway and the construction method thereof, comprises an analysis system; the repair groove is an open groove formed by chiseling the original filling material in the reserved groove of the bridge expansion joint transition area of the bridge according to the repair data; the repair cage is a latticed square frame which is formed by welding reinforcing steel bars in a criss-cross mode and is provided with at least two layers; a support layer disposed above the repair cage; the surface layer is arranged above the supporting layer and comprises a cement mortar layer and is arranged inside the cement mortar layer.
In the prior art, generally adopt elastomers such as rubber as the filler of bridge expansion joint to the flexible of adaptation bridge expansion joint, nevertheless the not enough of existence lies in: the existing elastomer material has poor wear resistance, the elastomer is more easily worn relative to a bridge pavement and is easy to generate elastic fatigue, so that a depression is formed at a bridge expansion joint, and the vehicle jolts seriously during running, so that the bridge expansion joint transition region needs to be frequently repaired.
Disclosure of Invention
The invention aims to provide a repair structure for a road concrete bridge expansion joint transition area and a construction method, and aims to overcome the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: a highway concrete bridge expansion joint transition zone repair structure comprises two anchoring parts, an elastic filling part, a one-way clamping part, an elastic unit and a wear compensation mechanism, wherein the two anchoring parts are fixedly connected with two beam ends of a bridge expansion joint in a one-to-one correspondence manner, the elastic filling part is arranged between the two anchoring parts in a sliding manner along the depth direction of the bridge expansion joint, the one-way clamping part is arranged between the elastic filling part and the anchoring parts and used for preventing the elastic filling part from sliding towards the lower part of the bridge expansion joint, the elastic unit elasticity acts on the elastic filling part towards the lower part of the expansion joint, the wear compensation mechanism comprises a trigger pressing plate and a transmission assembly, the trigger pressing plate is movably arranged on the anchoring parts along the depth direction of the expansion joint, the upper surface of the trigger pressing plate is aligned with the upper surface of the elastic filling part, after the upper part of the elastic filling part is rolled and worn by vehicles, the trigger pressing plate is rolled by a vehicle and moves downwards, and the elastic filling piece slides and rises towards the bridge pavement through the transmission assembly to compensate abrasion.
Furthermore, the elastic filling piece comprises two rigid protection plates and an elastic body, the elastic body is fixedly arranged between the two rigid protection plates, and the two rigid protection plates are fixedly connected with the beam end respectively.
Further, the elastomer is neoprene, natural rubber or TCS crushed stone elastoplast.
Furthermore, the one-way clamping stop piece comprises a group of barbed first ratchet teeth and at least one second ratchet tooth, the first ratchet teeth are arranged on the anchoring piece in parallel along the depth direction of the expansion joint, the second ratchet teeth are arranged on the rigid protection plate, and the second ratchet teeth are clamped on the first ratchet teeth.
Furthermore, the one-way clamping piece comprises a movable clamping tooth, a torsion spring and a group of barbed first ratchets, the first ratchets are arranged on the anchoring piece in parallel along the depth direction of the expansion joint, the movable clamping tooth is rotatably arranged on the rigid protection plate, and when the elastic filling piece is lifted to the bridge pavement, the movable clamping tooth overcomes the elasticity of the torsion spring and rotates to avoid the first ratchets.
Furthermore, the abrasion compensation mechanism also comprises an elastic reset unit, and the elastic force of the elastic reset unit acts on the trigger pressure plate upwards along the sliding direction of the trigger pressure plate;
the transmission assembly is a one-way transmission assembly and only receives the driving when the trigger pressing plate moves downwards so that the elastic filling piece slides and rises towards the bridge pavement.
Further, the one-way transmission assembly comprises a first rack, a first gear, a second gear, an inner ratchet wheel, a pawl and a second rack, wherein the first rack is fixedly arranged on a rigid guard plate of the elastic filling piece, the first gear is coaxially and fixedly connected with a rotating shaft, the rotating shaft is rotationally connected to the anchoring piece, the first gear is meshed with the first rack, the second gear is coaxially rotationally connected to the rotating shaft, the inner ratchet wheel is coaxially embedded in the second gear, the pawl is elastically hinged on the rotating shaft and matched with the ratchet wheel, the second rack is fixedly connected on the trigger pressure plate and meshed with the second gear, when the trigger pressing plate moves downwards, the second rack drives the second gear and the ratchet wheel to rotate in the forward direction, the pawl is clamped into the tooth groove of the ratchet wheel so that the rotating shaft and the first gear rotate, and the first gear drives the elastic filling piece to move upwards through the shaft rod; when the elastic reset unit enables the trigger pressure plate to move upwards for resetting, the second rack drives the second gear and the ratchet wheel to rotate and rotate reversely for idle rotation, and the pawl slides through a tooth groove of the ratchet wheel.
Further, still include spacing subassembly, spacing subassembly includes L shape pole and fixed block, L shape pole fixed connection is on triggering the clamp plate, fixed block fixed connection is on anchor assembly, and the L shaped plate follows the process form that triggers the clamp plate to shift up and cooperates with the fixed block butt.
Further, the elastic unit is a tension spring.
A construction method for repairing a structure of a highway concrete bridge expansion joint transition area comprises the following steps: s1, cleaning sundries at the stage that the bridge expansion joint needs to be repaired;
s2, respectively anchoring or pouring the two anchoring parts to two beam ends of the bridge expansion joint;
s3, mounting the two rigid guard plates of the elastic filling piece and the wear compensation mechanism on corresponding anchoring pieces, clamping the one-way clamping and stopping piece, aligning the upper surface of the trigger pressing plate with the road surface of the bridge, and if the bridge expansion joint is a bridge expansion joint of a one-way lane, positioning the trigger pressing plate at the front side of the elastic filling piece along the advancing direction of the vehicle; if the bridge expansion joint is a tidal lane bridge expansion joint, the front side and the rear side of the elastic filling piece are respectively provided with a trigger pressing plate, and the two trigger pressing plates are connected to move synchronously; installing an elastic unit;
and S4, installing the elastic body of the elastic filling piece, wherein the upper surface of the elastic body is aligned with the road surface of the bridge.
In the technical scheme, when the upper part of the elastic filling piece is aligned with the road surface of the bridge, a vehicle rolls on the elastic body when passing, the vehicle cannot press down the trigger pressing plate, after the upper part of the elastic filling piece is rolled and worn to a certain degree by the vehicle, the tire sinks into the elastic filling piece when the vehicle passes, the trigger pressing plate is rolled and moved downwards by the tire of the vehicle, and the elastic filling piece is lifted to the road surface of the bridge in a sliding manner through the transmission assembly to compensate the wear, so that the upper surface of the elastic filling piece is aligned with the road surface of the bridge again.
In the technical scheme, the construction method for the repair structure of the expansion joint transition area of the highway concrete bridge provided by the invention can be used for repairing the damaged part of the expansion joint transition area of the bridge at a fixed point, is convenient to construct, can be used for installing and constructing the repair structure of the expansion joint transition area of the highway concrete bridge aiming at the bridge expansion joints of the one-way lane and the tidal lane, and has an obvious effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural diagram provided in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a structure provided by an embodiment of the present invention;
FIG. 3 is a schematic representation of a one-way grip according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an elastic filling member according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a rigid shield according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of an anchor according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a wear compensation mechanism provided in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view of a portion of a transmission assembly according to an embodiment of the present invention;
fig. 9 is a schematic view of a construction structure provided in an embodiment of the present invention.
Description of reference numerals:
1', a beam end;
1. an anchoring member; 2. an elastic filling member; 2.1, rigid guard plates; 2.2, an elastomer; 3. a one-way latch; 3.1, a first ratchet; 3.2, a second ratchet; 3.3, moving the latch; 4. an elastic unit; 5. triggering the pressing plate; 6. a transmission assembly; 6.1, a first rack; 6.2, a first gear; 6.3, a rotating shaft; 6.4, a second gear; 6.5, an inner ratchet wheel; 6.6, a pawl; 6.7, a second rack; 7. an elastic reset unit; 8. a limiting component; 8.1, an L-shaped rod; 8.2, fixing blocks.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1-9, a repair structure for a road concrete bridge expansion joint transition area provided in an embodiment of the present invention includes two anchors 1, an elastic filling member 2, a one-way locking member 3, an elastic unit 4, and a wear compensation mechanism, wherein the two anchors 1 are fixedly connected to two beam ends 1' of the bridge expansion joint one by one, the elastic filling member 2 is slidably disposed between the two anchors 1 along a depth direction of the bridge expansion joint, the one-way locking member 3 is disposed between the elastic filling member 2 and the anchors 1 for preventing the elastic filling member 2 from sliding to a lower side of the bridge expansion joint, the elastic unit 4 acts on the elastic filling member 2 to the lower side of the expansion joint, the wear compensation mechanism includes a trigger pressing plate 5 and a transmission assembly 6, the trigger pressing plate 5 is movably disposed on the anchors 1 along the depth direction of the expansion joint, an upper surface of the trigger pressing plate 5 is aligned with an upper surface of the elastic filling member 2, after the upper part of the elastic filling member 2 is crushed and worn by the vehicle, the trigger pressing plate 5 is crushed and moved downwards by the vehicle, and the elastic filling member 2 is lifted to the bridge pavement in a sliding mode through the transmission assembly 6 so as to compensate the wear.
Specifically, the two anchoring pieces 1 are distributed in a mirror image mode, the structures are basically consistent, the anchoring pieces 1 are plate-shaped, and one side of each anchoring piece 1 is anchored or poured on a beam end 1' of the bridge. The elastic filling member 2 preferably comprises two rigid protection plates 2.1 and an elastic body 2.2, the elastic body 2.2 is fixedly arranged between the two rigid protection plates 2.1, the two rigid protection plates 2.1 are respectively fixedly connected with one beam end 1', namely, a sliding structure such as a sliding block or a roller is arranged on the rigid protection plate 2.1, and a structure matched with the sliding structure such as the matching of the sliding block and a guide rail is arranged on the anchoring member 1. The elastomer 2.2 is preferably neoprene, natural rubber or TCS crushed stone elastoplast. The one-way clamping and stopping piece 3 is arranged so that the elastic filling piece 2 can only slide upwards along the lower part of the bridge expansion joint and cannot slide downwards from the upper part of the bridge expansion joint. Elastic unit 4 is the extension spring, the one end and the anchor assembly 1 fixed connection of extension spring, the other end and rigidity backplate 2.1 fixed connection, and the pulling force of extension spring acts on elasticity filler 2 downwards, can enough avoid elasticity filler 2 to upwards excessively slide and lead to roll-off bridge expansion joint, can make elasticity filler 2 provide ascending displacement volume for elasticity filler 2 when the lifting slides in order to compensate wearing and tearing to the bridge road surface at wearing and tearing compensation mechanism again. The wear compensation mechanism preferably has a trigger pressing plate 5 which can be a travel switch or a pressure sensor, after the upper part of the elastic filling member 2 is rolled and worn by a vehicle, the trigger pressing plate 5 is rolled and moved downwards by the vehicle, the travel switch or the pressure sensor is triggered, and the transmission assembly 6 can be a hydraulic mechanism or a motor driving mechanism, so that the elastic filling member 2 slides and rises towards the bridge pavement to compensate the wear.
In the technical scheme, when the upper part of the elastic filling piece 2 is aligned with the bridge pavement, a vehicle rolls on the elastic body 2.2 when passing, the vehicle cannot press down the trigger pressing plate 5, after the upper part of the elastic filling piece 2 is rolled and worn to a certain degree by the vehicle, the tire sinks towards the elastic filling piece 2 when the vehicle passes, the trigger pressing plate 5 is rolled and moved downwards by the tire of the vehicle, the elastic filling piece 2 slides and rises towards the bridge pavement through the transmission assembly 6 to compensate the wear, and the upper surface of the elastic filling piece 2 is aligned with the bridge pavement again.
Referring to fig. 2, the one-way clamping unit 3 includes a set of barbed first ratchet 3.1 and at least one second ratchet 3.2, each first ratchet 3.1 is disposed on the anchoring member 1 in parallel along the depth direction of the expansion joint, preferably, the cross section of the first ratchet 3.1 is in the shape of a right triangle, wherein a right-angle side is fixedly connected with a side edge of the anchoring plate, another right-angle side is parallel to the road surface of the bridge, an inclined surface is inclined downward, the second ratchet 3.2 is disposed on the rigid protection plate 2.1, the shape of the second ratchet 3.2 is the same as that of the first ratchet 3.1, but the direction of the second ratchet 3.2 is opposite to that of the first ratchet 3.1.
As another preferable technical solution of this embodiment, referring to fig. 3, the one-way locking piece 3 includes a movable latch 3.3, a torsion spring, and a set of barbed first ratchet teeth 3.1, each first ratchet tooth 3.1 is disposed on the anchor member 1 in parallel along the depth direction of the expansion joint, the movable latch 3.3 is rotatably disposed on the rigid guard plate 2.1, when the elastic filling member 2 is lifted up to the bridge road surface, the movable latch 3.3 overcomes the elastic force of the torsion spring to rotate and avoid the first ratchet teeth, so that the elastic filling member 2 can smoothly slide upward, when the downward pressure applied to the trigger pressing plate 5 is over, and the movable latch 3.3 moves to the corresponding first ratchet tooth 3.1, the elastic force of the torsion spring returns to rotate and reset the movable latch 3.3, the movable latch 3.3 is latched to the corresponding first ratchet tooth 3.1 at this time, and the elastic filling member 2 does not move downward under the rolling of the vehicle.
In another embodiment provided by the present invention, referring to fig. 2, the wear compensation mechanism further includes an elastic reset unit 7, and an elastic force of the elastic reset unit 7 acts on the trigger pressing plate 5 upwards along the sliding direction of the trigger pressing plate 5; the transmission component 6 is a one-way transmission component 6 which only receives the driving when the trigger pressing plate 5 moves downwards so as to enable the elastic filling piece 2 to slide and lift towards the bridge pavement. In this embodiment, trigger clamp plate 5 and rolled down and make elasticity filling member 2 slide the lifting in order to compensate the wearing and tearing to the bridge road surface through the transmission of one-way transmission subassembly 6, after the overdraft that trigger clamp plate 5 received, elasticity reset unit 7 makes trigger clamp plate 5 shift up the restoration, can circulate above-mentioned step again after the upper surface of elasticity filling member 2 is worn and torn in order to compensate the wearing and tearing, thereby realize lasting compensation wearing and tearing many times, until elastomer 2.2 is consumed, need not to restore many times, time saving and labor saving.
As a particularly preferred technical solution of this embodiment, referring to fig. 7-8, the unidirectional transmission assembly 6 includes a first rack 6.1, a first gear 6.2, a second gear 6.4, an inner ratchet 6.5, a pawl 6.6 and a second rack 6.7, wherein the first rack 6.1 is fixedly disposed on the rigid protection plate 2.1 of the elastic filling member 2, the first gear 6.2 is coaxially and fixedly connected with a rotating shaft 6.3, the rotating shaft 6.3 is rotatably connected to the anchoring member 1, the first gear 6.2 is engaged with the first rack 6.1, the second gear 6.4 is coaxially and rotatably connected to the rotating shaft 6.3, the inner ratchet 6.5 is coaxially embedded inside the second gear 6.4, the pawl 6.6 is elastically hinged to the rotating shaft 6.3, the pawl 6.6 is engaged with the ratchet, the second rack 6.7 is fixedly connected to the trigger pressing plate 5, the second rack 6.7 is engaged with the second gear 6.4, when the trigger pressing plate 5 moves down, the second rack 6.7 drives the ratchet 6.4 to rotate in a positive direction, the pawl 6.6 is clamped into the tooth groove of the ratchet wheel so that the rotating shaft 6.3 and the first gear 6.2 rotate, and the first gear 6.2 drives the elastic filling piece 2 to move upwards through the shaft rod; when the elastic reset unit 7 enables the trigger pressing plate 5 to move upwards and reset, the trigger pressing plate 5 drives the second rack 6.7 to move upwards, the second rack 6.7 drives the second gear 6.4, the ratchet wheel rotates to rotate in a reverse idle mode, the pawl 6.6 slides through a tooth groove of the ratchet wheel, the rotating shaft 6.3 and the first gear 6.2 do not rotate, namely the first rack 6.1 does not move, namely the elastic filling piece 2 does not move, and therefore the elastic filling piece 2 is kept at a position for compensating abrasion.
As the preferred technical scheme of this embodiment, still include spacing subassembly 8, spacing subassembly 8 includes L shape pole 8.1 and fixed block 8.2, L shape pole 8.1 fixed connection on triggering the clamp plate 5, and fixed block 8.2 fixed connection is on anchor assembly 1, and the process form that the L-shaped board moved up along with triggering the clamp plate 5 is with fixed block 8.2 butt cooperation. The limiting assembly 8 is used for limiting the upward sliding stroke of the trigger pressing plate 5 after the elastic resetting unit 7 resets the trigger pressing plate 5, and the upper surface of the trigger pressing plate 5 is prevented from protruding out of the road surface of the bridge.
In another embodiment of the present invention, referring to fig. 9, when the length of the bridge expansion joint is longer at the stage that needs to be repaired, or when the present invention is directly used as the expansion joint device of the bridge, the bridge expansion joint is formed by sequentially splicing a plurality of highway concrete bridge expansion joint transition area repair structures, the anchoring members 1 at the same side of each adjacent highway concrete bridge expansion joint transition area repair structure are fixedly connected or integrally formed, the length of the elastic filling member 2 (along the length direction of the bridge expansion joint) is set to be 500mm, the length of the trigger pressing plate 5 is consistent with the length of the elastic filling member 2, so as to aim at the vehicle driving characteristics, the wear degrees at different stages in the length direction of the same bridge expansion joint are different, and thus the present invention can perform adaptive wear compensation.
The invention also provides a construction method of the repair structure for the expansion joint transition area of the highway concrete bridge, which comprises the following steps:
s1, cleaning sundries at the stage that the bridge expansion joint needs to be repaired;
s2, respectively anchoring or pouring the two anchoring parts 1 onto two beam ends 1' of the bridge expansion joint;
s3, mounting the two rigid guard plates 2.1 and the wear compensation mechanism of the elastic filling piece 2 on the corresponding anchoring pieces 1, clamping the one-way clamping and stopping piece 3, aligning the upper surface of the trigger pressing plate 5 with the road surface of the bridge, and if the bridge expansion joint is a bridge expansion joint of a one-way lane, positioning the trigger pressing plate at the front side of the elastic filling piece 2 along the advancing direction of the vehicle (the side corresponding to the beam end of the two beam ends of the bridge expansion joint through which the vehicle passes); if the expansion joint is a bridge expansion joint of a tidal lane, the front side and the rear side of the elastic filling part 2 are respectively provided with a trigger pressing plate 5, and the two trigger pressing plates 5 are connected to move synchronously; mounting the elastic unit 4;
s4, installing the elastic body 2.2 of the elastic filling piece 2, wherein the upper surface of the elastic body 2.2 is aligned with the road surface of the bridge.
The construction method can repair the damaged part of the bridge expansion joint transition area at a fixed point, is convenient to construct, can carry out installation and construction of the repair structure of the bridge expansion joint transition area of the highway concrete bridge aiming at the bridge expansion joints of the one-way lane and the tidal lane, and has remarkable effect.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a highway concrete bridge expansion joint transition area restores structure which characterized in that includes:
the two anchoring parts are fixedly connected with the two beam ends of the bridge expansion joint in a one-to-one correspondence manner;
the elastic filling piece is arranged between the two anchoring pieces in a sliding manner along the depth direction of the bridge expansion joint;
the one-way clamping and stopping piece is arranged between the elastic filling piece and the anchoring piece and is used for preventing the elastic filling piece from sliding to the lower part of the bridge expansion joint;
the elastic unit, its elasticity acts on said elastic filler to the expansion joint lower side;
the wear compensation mechanism comprises a trigger pressing plate and a transmission assembly, wherein the trigger pressing plate is arranged on the anchoring piece in a moving mode along the depth direction of the expansion joint, the upper surface of the trigger pressing plate is aligned with the upper surface of the elastic filling piece, after the upper portion of the elastic filling piece is rolled and worn by a vehicle, the trigger pressing plate is rolled and moved downwards by the vehicle, and the elastic filling piece is enabled to slide and lift towards the bridge pavement through the transmission assembly to compensate wear.
2. The repair structure for an expansion joint transition area of a road concrete bridge according to claim 1, wherein the elastic filling member comprises two rigid protection plates and an elastic body, the elastic body is fixedly arranged between the two rigid protection plates, and each of the two rigid protection plates is fixedly connected with one of the beam ends.
3. The repair structure for expansion joint transition areas of road concrete bridges as claimed in claim 2, wherein the elastic body is neoprene, natural rubber or TCS crushed stone elastoplast.
4. The repair structure for the expansion joint transition area of the road concrete bridge according to claim 2, wherein the one-way clamping fastener comprises a set of barbed first ratchet teeth and at least one second ratchet tooth, the first ratchet teeth are arranged on the anchoring piece in parallel along the depth direction of the expansion joint, the second ratchet teeth are arranged on the rigid protection plate, and the second ratchet teeth are clamped on the first ratchet teeth.
5. The repair structure for the expansion joint transition area of the road concrete bridge according to claim 2, wherein the one-way clamping piece comprises a movable clamping tooth, a torsion spring and a set of barbed first ratchet teeth, the first ratchet teeth are arranged on the anchoring piece in parallel along the depth direction of the expansion joint, the movable clamping tooth is rotatably arranged on the rigid protection plate, and when the elastic filling piece is lifted to the road surface of the bridge, the movable clamping tooth overcomes the elasticity of the torsion spring to rotate and avoid the first ratchet teeth.
6. The repair structure for the expansion joint transition area of the road concrete bridge according to claim 1 or 2, wherein the wear compensation mechanism further comprises an elastic reset unit, and the elastic force of the elastic reset unit acts on the trigger pressure plate upwards along the sliding direction of the trigger pressure plate;
the transmission assembly is a one-way transmission assembly and only receives the driving when the trigger pressing plate moves downwards so that the elastic filling piece slides and rises towards the bridge pavement.
7. The road concrete bridge expansion joint transition area repair structure of claim 6, wherein the one-way transmission assembly comprises:
the first rack is fixedly arranged on the rigid protection plate of the elastic filling piece;
the first gear is coaxially and fixedly connected with a rotating shaft, the rotating shaft is rotatably connected to the anchoring piece, and the first gear is meshed with the first rack;
a second gear coaxially rotatably connected to the rotating shaft;
the inner ratchet wheel is coaxially embedded in the second gear;
the pawl is elastically hinged on the rotating shaft and matched with the ratchet wheel;
the second rack is fixedly connected to the trigger pressure plate and meshed with the second gear;
when the trigger pressing plate moves downwards, the second rack drives the second gear and the ratchet wheel to rotate in the forward direction, the pawl is clamped into the tooth groove of the ratchet wheel so that the rotating shaft and the first gear rotate, and the first gear drives the elastic filling piece to move upwards through the shaft rod; when the elastic reset unit enables the trigger pressure plate to move upwards for resetting, the second rack drives the second gear and the ratchet wheel to rotate and rotate reversely for idle rotation, and the pawl slides through a tooth groove of the ratchet wheel.
8. The road concrete bridge expansion joint transition area repairing structure of claim 6, further comprising a limiting assembly, wherein the limiting assembly comprises an L-shaped rod and a fixing block, the L-shaped rod is fixedly connected to the trigger pressing plate, the fixing block is fixedly connected to the anchoring piece, and the L-shaped plate is abutted and matched with the fixing block along with the upward moving process of the trigger pressing plate.
9. The road concrete bridge expansion joint transition area repairing structure of claim 1, wherein the elastic unit is a tension spring.
10. A construction method for a road concrete bridge expansion joint transition area repair structure according to any one of claims 1 to 9, comprising the steps of:
s1, cleaning sundries at the stage that the bridge expansion joint needs to be repaired;
s2, respectively anchoring or pouring the two anchoring parts to two beam ends of the bridge expansion joint;
s3, mounting the two rigid guard plates of the elastic filling piece and the wear compensation mechanism on corresponding anchoring pieces, clamping the one-way clamping and stopping piece, aligning the upper surface of the trigger pressing plate with the road surface of the bridge, and if the bridge expansion joint is a bridge expansion joint of a one-way lane, positioning the trigger pressing plate at the front side of the elastic filling piece along the advancing direction of the vehicle; if the bridge expansion joint is a tidal lane bridge expansion joint, the front side and the rear side of the elastic filling piece are respectively provided with a trigger pressing plate, and the two trigger pressing plates are connected to move synchronously; installing an elastic unit;
and S4, installing the elastic body of the elastic filling piece, wherein the upper surface of the elastic body is aligned with the road surface of the bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210142690.9A CN114232472A (en) | 2022-02-16 | 2022-02-16 | Highway concrete bridge expansion joint transition area repairing structure and construction method |
Applications Claiming Priority (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323944A (en) * | 2022-09-06 | 2022-11-11 | 江西交通咨询有限公司 | Repair structure for expansion joint area of concrete bridge of highway and construction method |
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| US5887308A (en) * | 1997-07-28 | 1999-03-30 | Watson Bowman Acme Corp. | Expansion joint system with seismic accommodation |
| CN203684083U (en) * | 2013-12-11 | 2014-07-02 | 中国航空工业集团公司北京航空材料研究院 | Sealing protecting structure of highway bridge telescopic device |
| CN204000601U (en) * | 2014-08-27 | 2014-12-10 | 西安公路研究院 | Gapless stretching device between a kind of bridge beam end and abutment |
| KR20150117832A (en) * | 2014-04-11 | 2015-10-21 | (주)바우테크 | Expansion joint maintenance facility and using the repair method |
| CN112252151A (en) * | 2020-10-16 | 2021-01-22 | 姚惠红 | Anti-sinking bridge |
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2022
- 2022-02-16 CN CN202210142690.9A patent/CN114232472A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887308A (en) * | 1997-07-28 | 1999-03-30 | Watson Bowman Acme Corp. | Expansion joint system with seismic accommodation |
| CN203684083U (en) * | 2013-12-11 | 2014-07-02 | 中国航空工业集团公司北京航空材料研究院 | Sealing protecting structure of highway bridge telescopic device |
| KR20150117832A (en) * | 2014-04-11 | 2015-10-21 | (주)바우테크 | Expansion joint maintenance facility and using the repair method |
| CN204000601U (en) * | 2014-08-27 | 2014-12-10 | 西安公路研究院 | Gapless stretching device between a kind of bridge beam end and abutment |
| CN112252151A (en) * | 2020-10-16 | 2021-01-22 | 姚惠红 | Anti-sinking bridge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323944A (en) * | 2022-09-06 | 2022-11-11 | 江西交通咨询有限公司 | Repair structure for expansion joint area of concrete bridge of highway and construction method |
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