CN213571522U - Bridge expansion joint device with bridge deck free of height difference - Google Patents
Bridge expansion joint device with bridge deck free of height difference Download PDFInfo
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- CN213571522U CN213571522U CN202021875049.9U CN202021875049U CN213571522U CN 213571522 U CN213571522 U CN 213571522U CN 202021875049 U CN202021875049 U CN 202021875049U CN 213571522 U CN213571522 U CN 213571522U
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- expansion joint
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Abstract
The utility model discloses a bridge expansion joint device without height difference on a bridge floor, which comprises a pre-buried steel plate and a telescopic metal plate; the embedded steel plates comprise a left embedded steel plate and a right embedded steel plate; the concrete pavement layers are respectively positioned right above the left concrete beam or the right concrete beam; the tops of the two embedded steel plates are flush with the top surface of the concrete pavement layer and are connected with the steel bars in the concrete pavement layer; the telescopic metal plates are laid in the asphalt pavement layer above the two embedded steel plates, and each telescopic metal plate comprises a left metal plate and a right metal plate which can slide along the longitudinal bridge direction; the left metal plate is in threaded connection with the left embedded steel plate through a bolt, and the right metal plate is in threaded connection with the right embedded steel plate through a bolt; the top surface of the telescopic metal plate is flush with the top surface of the asphalt pavement layer. The utility model discloses make pitch layer bridge floor and expansion joint device top surface not have the difference in height, whole bridge floor roughness is high, improves the comfort level of traveling, and prolongs expansion joint device's life by a wide margin.
Description
Technical Field
The utility model relates to a bridge auxiliary member technical field, especially a bridge expansion joint device that bridge floor does not have discrepancy in elevation.
Background
The design life of the bridge is generally longer, but the bridge expansion joint is easy to damage and far short of the design life. After the expansion joint is damaged, the passing comfort of the vehicle is greatly reduced.
Chinese utility model patent application as bulletin number is CN105507141A, it discloses a bridge expansion joint device, and it includes two fishback bars, and every fishback bar all passes through the bolt fastening on the supporting beam of L type, and a plurality of supporting shoe is bolted fixation again in every supporting beam's the outside, and the outside of every supporting shoe is equal welded fastening one along the long and stock or the anchor bar that is the U type of longitudinal bridge to. The concrete construction method of the bridge expansion joint device comprises the following steps: after the asphalt bridge deck pavement is finished, the placing groove of the bridge expansion joint device is cut, then the bridge expansion joint device is placed in the cavity, and finally the cavity is cast in situ by adopting a concrete cast-in-situ mode so as to realize the connection of anchor bars, the bridge deck and a concrete beam in the whole bridge expansion joint device.
The bridge expansion joint device has the following defects in the construction and use processes, and needs to be further improved:
1. in the construction process, the asphalt bridge deck with certain flexibility is paved first, and then the rigid bridge expansion joint device is paved in the asphalt bridge deck. The construction process of firstly softening and then hardening can make the height of the rigid bridge expansion joint device difficult to control accurately, so that a larger height difference exists between the asphalt bridge deck and the bridge expansion joint device in the longitudinal direction of the bridge. In the driving process of the automobile, the expansion joint is repeatedly impacted to form the damage of the expansion joint.
2. The concrete pavement layer of bridge floor bottom need reserve the standing groove of bridge expansion joint device specially in the work progress to the engineering time on concrete pavement layer has been prolonged.
3. The bridge expansion joint device is of an integral structure along the transverse bridge direction, and the bridge deck unevenness in the longitudinal bridge direction is easily caused in the paving process. In addition, because the bridge floor of fishback both sides is the concrete bridge floor, when the car travel in-process bumps the expansion joint repeatedly, leads to the damage of the position of being connected of concrete bridge floor and fishback easily. When the damage seriously needs to be repaired, the whole bridge expansion joint device needs to be replaced, the replacement cost is high, time and labor are wasted, and the normal traffic of the bridge deck is also influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, and provide a bridge expansion joint device that the bridge floor does not have the difference in height, this bridge expansion joint device that the bridge floor does not have the difference in height has cancelled current stock structure, and the placement process of flexible metal sheet has been changed, so when bottom concrete pavement, need not to reserve the expansion joint standing groove, also need not to carry out cast in situ concrete to the stock, thereby make pitch layer bridge floor and expansion joint device top surface not have the difference in height, whole bridge deck roughness is high, improve the comfort level of traveling, and prolong expansion joint device's life by a wide margin.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a bridge expansion joint device without height difference on a bridge deck is disclosed, wherein the bridge comprises a left concrete beam, a right concrete beam and an expansion joint arranged between the left concrete beam and the right concrete beam; the bridge deck is paved on the top of the bridge and sequentially comprises a concrete pavement layer and an asphalt pavement layer from bottom to top; the bridge expansion joint comprises an embedded steel plate and a telescopic metal plate.
The embedded steel plates comprise a left embedded steel plate and a right embedded steel plate. The left pre-buried steel plate is pre-buried in the concrete pavement layer directly above the left concrete beam, and the right pre-buried steel plate is pre-buried in the concrete pavement layer directly above the right concrete beam.
The top of left side pre-buried steel sheet and right pre-buried steel sheet flushes with the layer top surface of mating formation of concrete, and left side pre-buried steel sheet and right pre-buried steel sheet just all are connected with the reinforcing bar in the layer of mating formation of concrete.
The telescopic metal plates are laid in the asphalt paving layers above the left embedded steel plate and the right embedded steel plate, each telescopic metal plate comprises a left metal plate and a right metal plate, and the left metal plate and the right metal plate can slide in the opposite direction or in the opposite direction along the longitudinal bridge; the left metal plate is in threaded connection with the left embedded steel plate through a bolt, and the right metal plate is in threaded connection with the right embedded steel plate through a bolt; the top surface of the telescopic metal plate is flush with the top surface of the asphalt pavement layer.
The telescopic metal plate is formed by splicing a plurality of telescopic metal plate sections along the transverse bridge direction.
At least two telescopic metal plate sections are crawler belt matching sections and are used for matching with a crawler belt of paving and rolling equipment.
The length of the telescopic metal plate segment in the transverse bridge direction is 1-2 m.
Rubber belts are filled between adjacent telescopic metal plate sections.
And an elastic filling member is arranged at the top of the expansion joint between the left embedded steel plate and the right embedded steel plate.
The elastic filling member is a foam board.
The left metal plate and the right metal plate are comb plates, and the comb teeth of the left metal plate and the comb teeth of the right metal plate are in staggered insertion fit.
The utility model discloses following beneficial effect has:
1. the utility model discloses improve expansion joint device for pre-buried steel sheet and flexible metal sheet, bury the pre-buried steel sheet underground in the bottom concrete pavement layer of bridge floor, the flexible metal sheet is buried underground in the pitch pavement layer, flexible metal sheet and pre-buried steel sheet threaded connection, simultaneously, flexible metal sheet top surface flushes with pitch pavement layer top surface mutually, does not have the difference in height, and whole bridge face roughness is high, improves the comfort level of traveling, and prolongs expansion joint device's life by a wide margin.
2. The structure of the expansion joint device is improved, so that the construction process of the expansion joint device is greatly adjusted. In this application, can place rigid flexible metal sheet earlier in the pitch layer of mating formation of well lower floor, then, carry out flexible topmost layer pitch again and mat formation to can the accurate control pitch bridge floor and the difference in height between the flexible metal sheet, make the difference in height approach to zero, improve the bridge face roughness height by a wide margin, improve the comfort level of traveling, and prolong the life at expansion joint by a wide margin.
3. The utility model discloses owing to cancelled current stock structure, so when bottom concrete pavement, need not to reserve the expansion joint standing groove, also need not to carry out cast in situ concrete to the stock to further make pitch layer bridge floor and expansion joint top surface do not have the difference in height, whole bridge deck roughness is high, improves the comfort level of traveling, and prolongs the life at expansion joint by a wide margin.
4. The telescopic metal plate of the expansion joint of the utility model is formed by splicing a plurality of sections of telescopic metal plate sections along the transverse bridge direction, and the length of each section of telescopic metal plate section is between 1 and 2 meters. Therefore, the bridge deck is more flat in the longitudinal bridge direction. In addition, when the connecting part of the telescopic metal plate and the asphalt pavement layer is damaged, the asphalt pavement layer corresponding to the damaged part is only required to be cut and replaced, so that the replacement cost is low, and the time is saved. Meanwhile, only the replacement segments need to be enclosed, and the normal traffic flow of other lanes of the bridge deck is not affected.
Drawings
Fig. 1 shows a schematic structural diagram of a middle telescopic metal plate segment of the present invention.
Fig. 2 shows the structure schematic diagram of the first layer of asphalt after paving.
Fig. 3 shows the structure of the middle and top asphalt layer of the present invention after loose laying.
Fig. 4 shows the structure schematic diagram of the middle top layer asphalt of the present invention after rolling.
Figure 5 shows a schematic view of the invention with the track engaging section not installed.
Figure 6 shows the schematic view of the installed track engaging segment of the present invention.
The figure shows that:
10. an expansion joint device;
11. pre-burying a steel plate; 111. a steel plate is embedded in the left side; 112. an embedded steel plate is arranged;
12. a stretchable metal plate; 121. a left metal plate; 122. a right metal plate; 123. a threaded hole; 124. a track-engaging segment; 125. a telescoping sheet metal segment; 126. a silica gel band;
13. a bolt;
20. a concrete beam; 21. a left concrete beam; 22. a right concrete beam; 23. an expansion joint;
30. a bridge deck;
31. a concrete pavement layer; 32. an asphalt pavement layer; 321. spreading a first asphalt layer; 322. spreading the second asphalt;
40. an elastic filling member; 50. the track wheel passes through the area.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, "first", "second" and the like do not indicate the degree of importance of the component parts, and thus, are not to be construed as limiting the present invention. The specific dimensions used in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.
As shown in fig. 4 and 6, the bridge girder 20 includes a left concrete beam 21, a right concrete beam 22, and an expansion joint 23 provided between the left and right concrete beams.
The bridge deck 30 is paved on the top of the bridge and sequentially comprises a concrete pavement layer 31 and an asphalt pavement layer 32 from bottom to top.
As shown in fig. 4 and 6, a bridge expansion joint device 10 without height difference on the bridge deck includes an embedded steel plate 11 and a telescopic metal plate 12.
The embedded steel plates comprise a left embedded steel plate 111 and a right embedded steel plate 112; the left pre-buried steel plate is pre-buried in the concrete pavement layer directly above the left concrete beam, and the right pre-buried steel plate is pre-buried in the concrete pavement layer directly above the right concrete beam.
The top of left side pre-buried steel sheet and right pre-buried steel sheet flushes with the layer top surface of mating formation of concrete, and left side pre-buried steel sheet and right pre-buried steel sheet just all are connected with the reinforcing bar in the layer of mating formation of concrete.
The top of the expansion joint between the left embedded steel plate and the right embedded steel plate is preferably provided with an elastic filling member 40, and the elastic filling member is preferably a foam plate.
The telescopic metal plate is laid in the asphalt pavement layer above the left embedded steel plate and the right embedded steel plate.
The utility model discloses in, flexible metal sheet is preferred to be formed by splicing each other along the horizontal bridge by a plurality of flexible metal sheet festival section 125, and preferred packing has rubber tape 126 between the adjacent flexible metal sheet festival section.
At least two of the telescoping sheet metal sections are track engaging sections 124 for engaging tracks of paving and rolling equipment.
As shown in fig. 1, each telescopic metal plate segment comprises a left metal plate 121 and a right metal plate 122, and the left metal plate 121 and the right metal plate 122 can slide towards each other or away from each other along the longitudinal bridge.
The left metal plate is in threaded connection with the left embedded steel plate through a bolt 123, and the right metal plate is in threaded connection with the right embedded steel plate through a bolt; the top surface of the telescopic metal plate is flush with the top surface of the asphalt pavement layer.
In this embodiment, the left metal plate 121 and the right metal plate 122 are preferably comb plates, the comb teeth of the left metal plate 121 and the comb teeth of the right metal plate 122 are in staggered insertion fit with each other, and the comb teeth can slide in the longitudinal bridge direction in the corresponding comb tooth grooves. Alternatively, the telescopic metal plate may have other structures as in the prior art.
Further, the length of each telescopic metal plate segment in the transverse bridge direction is preferably 1-2 m, but the length can be 0.8m or 3m or other numerical values, and the length is specifically set according to needs.
A construction method without height difference of an asphalt surface layer at a bridge expansion joint comprises the following steps.
Step 1, paving a concrete pavement layer: and respectively pouring reinforced concrete right above the tops of the two concrete beams to form a concrete pavement layer of the bridge deck. Expansion joints are arranged between the two concrete beams and between the concrete pavement layers right above the two concrete beams.
Step 2, embedding the embedded steel plates: and (2) when the reinforced concrete is poured in the step (1), pre-burying a pre-buried steel plate along the transverse bridge direction at the top of the reinforced concrete right above the two concrete beams. Every embedded steel plate all prefers to weld with the reinforcing bar in the concrete pavement layer mutually, all has a plurality of bolt hole on every embedded steel plate.
Furthermore, each bolt hole on each pre-buried steel plate is preferably matched with a detachable screw rod, and paving asphalt is prevented from entering the bolt hole.
The top surfaces of the two pre-buried steel plates are flush with the top surface of the concrete pavement layer. The two pre-buried steel plates are adjacent to or communicated with the expansion joint. And if the two concrete beams are respectively a left concrete beam and a right concrete beam, the embedded steel plate in the left concrete beam is a left embedded steel plate, and the embedded steel plate in the right concrete beam is a right embedded steel plate.
Step 3, elastically filling the top of the expansion joint: the elastic filling piece is filled at the top of the expansion joint; the resilient filler is preferably a foam board, the top surface of which is preferably flush with the top surface of the concrete pavement.
And 4, paving the asphalt pavement layer, wherein the asphalt pavement layer adopts a mode of paving by N layers, and N is more than or equal to 2. The concrete paving method comprises the following steps:
step 41, paving a first layer of asphalt: as shown in fig. 2, the first asphalt layer is uniformly spread on the concrete pavement and rolled to form a first asphalt paving layer. The top of the expansion joint is filled with the elastic filling member, so that the paved first layer of asphalt can not enter the expansion joint.
Step 42, paving the Nth-1 st layer of asphalt: and when the N is more than 2, repeating the step 41 until the N-1 th asphalt paving layer is finished to form the N-1 th asphalt paving layer. When N =2, step 43 is entered directly. In the drawings of the present embodiment, N =2 two-layer paving is taken as an example for explanation.
43, paving the Nth layer of asphalt, wherein the concrete paving method comprises the following steps:
step 43A, excavating a telescopic plate embedding groove: and cutting and removing the N-1 asphalt spreading layer positioned above the expansion joint and the two embedded steel plates to form an expansion plate embedding groove.
When the bolt holes are provided with the screw rods, the screw rods in each bolt hole are taken out. If no screw rod is arranged in each bolt hole, the asphalt in each bolt hole needs to be cleaned firstly.
Step 43B, marking a track wheel passing area: as shown in fig. 5, in the stretch panel burying groove excavated in step 43A, a passing area 50 of the crawler wheels of the crawler paver is marked.
Step 43C, laying a telescopic metal plate: as shown in fig. 5, the telescopic metal plate is formed by splicing a plurality of telescopic metal plate sections in the transverse direction. Wherein the telescoping metal plate segments corresponding to the track wheel passing areas in step 43 are referred to as track engaging segments. And splicing the telescopic metal plate sections except the crawler belt matching section in the transverse bridge direction in the telescopic plate burying groove excavated in the step 43A. Each telescopic metal plate segment comprises a left metal plate and a right metal plate which can be matched in a sliding mode along the longitudinal bridge direction. The left metal plate is in threaded connection with the left embedded steel plate, and the right metal plate is in threaded fit with the right embedded steel plate.
The length of each telescopic metal plate segment is preferably 1-2 m.
When the telescopic metal plates are laid, the space between adjacent telescopic metal plate sections is preferably filled and leveled by the rubber belts 126.
Step 43D, paving the Nth layer of asphalt: and paving the N-th layer of asphalt on two sides of the telescopic metal plate, and rolling to form an asphalt pavement layer of the bridge deck.
As shown in fig. 3, when the nth layer of asphalt is spread, the loose height of the nth layer of asphalt is higher than the top surface of the expanded metal sheet. The compacted top surface of the nth layer of asphalt is aligned with the telescopic metal plate by rolling, and the rolled top surface is shown in figure 4.
During the paving and rolling process, the track wheels of the paving and rolling apparatus need to pass through the track wheel passing area marked in step 43B.
Step 5, installing the crawler belt matched with the segments: asphalt in the crawler wheel passing area marked by cutting and removing is firstly cut, then, as shown in fig. 6, the crawler matching section is placed in the crawler wheel passing area, the left metal plate in the crawler matching section is in threaded connection with the left embedded steel plate, and the right metal plate in the crawler matching section is in threaded connection with the right embedded steel plate.
After the crawler belt matching sections are installed, rubber belts are adopted between the crawler belt matching sections and the adjacent telescopic metal plate sections for filling and flattening; and if a gap exists between the track matching section and the asphalt pavement layer, filling the gap with asphalt.
After the asphalt is paved, the mode of combining rolling along the longitudinal bridge direction and rolling along the transverse bridge direction is preferably adopted during rolling, and the compactness and the flatness of the bridge deck are improved.
The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention to perform various equivalent transformations, which all belong to the protection scope of the present invention.
Claims (8)
1. A bridge expansion joint device without height difference on a bridge deck is disclosed, wherein the bridge comprises a left concrete beam, a right concrete beam and an expansion joint arranged between the left concrete beam and the right concrete beam; the bridge deck is paved on the top of the bridge and sequentially comprises a concrete pavement layer and an asphalt pavement layer from bottom to top; the method is characterized in that: the bridge expansion joint comprises an embedded steel plate and a telescopic metal plate;
the embedded steel plates comprise a left embedded steel plate and a right embedded steel plate; the left pre-buried steel plate is pre-buried in a concrete pavement layer located right above the left concrete beam, and the right pre-buried steel plate is pre-buried in a concrete pavement layer located right above the right concrete beam;
the top parts of the left embedded steel plate and the right embedded steel plate are flush with the top surface of the concrete pavement layer, and the left embedded steel plate and the right embedded steel plate are connected with the steel bars in the concrete pavement layer;
the telescopic metal plates are laid in the asphalt paving layers above the left embedded steel plate and the right embedded steel plate, each telescopic metal plate comprises a left metal plate and a right metal plate, and the left metal plate and the right metal plate can slide in the opposite direction or in the opposite direction along the longitudinal bridge; the left metal plate is in threaded connection with the left embedded steel plate through a bolt, and the right metal plate is in threaded connection with the right embedded steel plate through a bolt; the top surface of the telescopic metal plate is flush with the top surface of the asphalt pavement layer.
2. The bridge expansion joint installation with no height difference on the bridge deck of claim 1, wherein: the telescopic metal plate is formed by splicing a plurality of telescopic metal plate sections along the transverse bridge direction.
3. The bridge expansion joint installation with no height difference on the bridge deck of claim 2, wherein: at least two telescopic metal plate sections are crawler belt matching sections and are used for matching with a crawler belt of paving and rolling equipment.
4. The bridge expansion joint installation with no height difference on the bridge deck of claim 2, wherein: the length of the telescopic metal plate segment in the transverse bridge direction is 1-2 m.
5. The bridge expansion joint installation with no height difference on the bridge deck of claim 2, wherein: rubber belts are filled between adjacent telescopic metal plate sections.
6. The bridge expansion joint installation with no height difference on the bridge deck of claim 1, wherein: and an elastic filling member is arranged at the top of the expansion joint between the left embedded steel plate and the right embedded steel plate.
7. The bridge expansion joint installation with no height difference on the bridge deck of claim 6, wherein: the elastic filling member is a foam board.
8. The bridge expansion joint installation with no height difference on the bridge deck of claim 1, wherein: the left metal plate and the right metal plate are comb plates, and the comb teeth of the left metal plate and the comb teeth of the right metal plate are in staggered insertion fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021875049.9U CN213571522U (en) | 2020-09-01 | 2020-09-01 | Bridge expansion joint device with bridge deck free of height difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021875049.9U CN213571522U (en) | 2020-09-01 | 2020-09-01 | Bridge expansion joint device with bridge deck free of height difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213571522U true CN213571522U (en) | 2021-06-29 |
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ID=76568845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021875049.9U Active CN213571522U (en) | 2020-09-01 | 2020-09-01 | Bridge expansion joint device with bridge deck free of height difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213571522U (en) |
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2020
- 2020-09-01 CN CN202021875049.9U patent/CN213571522U/en active Active
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