CN112195769B - Construction method for no height difference of asphalt surface layer at bridge expansion joint - Google Patents
Construction method for no height difference of asphalt surface layer at bridge expansion joint Download PDFInfo
- Publication number
- CN112195769B CN112195769B CN202010903337.9A CN202010903337A CN112195769B CN 112195769 B CN112195769 B CN 112195769B CN 202010903337 A CN202010903337 A CN 202010903337A CN 112195769 B CN112195769 B CN 112195769B
- Authority
- CN
- China
- Prior art keywords
- asphalt
- layer
- expansion joint
- metal plate
- paving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- E01D19/065—Joints having sliding plates
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a construction method without height difference of an asphalt surface layer at a bridge expansion joint, which comprises the following steps of 1, paving a concrete pavement layer; step 2, embedding pre-buried steel plates in the concrete pavement layer; step 3, elastically filling the top of the expansion joint; and 4, paving an asphalt pavement layer: the method specifically comprises the steps of paving a first layer of asphalt, paving an N-1 th layer of asphalt, excavating a telescopic plate burying groove, marking a crawler wheel passing area, paving telescopic metal plate sections except crawler belt matching sections, and paving an Nth layer of asphalt; and 5, installing the crawler belt matched with the sections. According to the invention, the expansion joint is improved, and only the embedded steel plate and the telescopic metal plate are included, so that the existing anchor rod structure is cancelled, and therefore, when concrete at the bottom is paved, the expansion joint placing groove does not need to be reserved, and the telescopic metal plate adopts a pavement process of firstly hardening and then hardening, so that the height difference between the bridge floor of the asphalt layer and the top surface of the expansion joint is avoided, the flatness of the whole bridge floor is high, the driving comfort is improved, and the service life of the expansion joint is greatly prolonged.
Description
1. Field of the invention
The invention belongs to the technical field of bridge construction, and particularly relates to a construction method for an asphalt surface layer at a bridge expansion joint without height difference.
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 comfort of the vehicle passing through can be greatly reduced.
For example, the chinese patent application with publication number CN105507141a discloses a bridge expansion joint device, which includes two comb plates, each comb plate is fixed on an L-shaped supporting beam through a bolt, the outer side of each supporting beam is fixed with a plurality of supporting blocks through bolts, and the outer side of each supporting block is welded and fixed with a U-shaped anchor rod or an anchor bar which is long along the longitudinal bridge direction. The concrete construction method of the bridge expansion joint device comprises the following steps: after the pavement of the asphalt bridge deck is finished, a placing cavity of the bridge expansion joint device is cut out, 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 flexible asphalt bridge surface is paved first, and then the rigid bridge expansion joint device is paved in the asphalt bridge surface. 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 a longitudinal 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.
Disclosure of Invention
The invention aims to solve the technical problem of providing a construction method without height difference of an asphalt surface layer at a bridge expansion joint, which aims at overcoming the defects of the background art, and cancels the existing anchor rod structure by improving the expansion joint, so that when concrete is paved at the bottom, the expansion joint is not required to be reserved for placing a cavity, and the anchor rod is not required to be cast in place with concrete.
The invention adopts the following technical scheme for solving the technical problems:
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. Each pre-buried steel plate is provided with a plurality of bolt holes. 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;
and 4, paving the asphalt pavement layer, wherein the asphalt pavement layer adopts a mode of paving by N layers, wherein N is more than or equal to 2. The concrete paving method comprises the following steps:
step 41, paving a first layer of asphalt: and uniformly spreading the first asphalt layer on the concrete pavement layer, and rolling and flattening to form a first asphalt spreading layer. The first layer of asphalt can not enter the expansion joint because of the filling of the elastic filling member at the top of 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 directly entered.
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 pre-buried steel plates to form an expansion plate burying groove.
Step 43B, marking a track wheel passing area: and marking the area, which needs to be passed by the crawler wheels in the crawler spreader, in the expansion plate burying groove excavated in the step 43A.
Step 43C, laying a telescopic metal plate: the telescopic metal plate is formed by splicing a plurality of telescopic metal plate sections along the transverse bridge 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.
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. Through rolling, the top surface of the asphalt pavement layer is flush with the top surface of the telescopic metal plate. During the paving and rolling process, the crawler wheels of the paving and rolling equipment need to pass through the crawler wheel passing area marked in step 43B.
Step 5, mounting the crawler belt matched with the segments: the method comprises the steps of firstly cutting and removing asphalt in a tracked wheel passing area of a mark, then placing a tracked matching section in the tracked wheel passing area, connecting a left metal plate and a left embedded steel plate in the tracked matching section in a threaded manner, and matching a right metal plate and a right embedded steel plate in the tracked matching section in a threaded manner.
In the step 2, each embedded steel plate is welded with the steel bars in the concrete pavement layer.
In the step 2, each bolt hole on each pre-buried steel plate is matched with a detachable screw rod, so that the paved asphalt is prevented from entering the bolt hole. After the expansion plate burying groove is excavated in step 43A, the screw in each bolt hole is taken out.
In the step 43C, when the telescopic metal plates are laid, the adjacent telescopic metal plate sections are filled and leveled by using rubber belts.
And 5, after the crawler belt matching sections are installed, filling rubber belts between the crawler belt matching sections and the adjacent telescopic metal plate sections smoothly.
In the step 43C, when the telescopic metal plates are laid, the length of each telescopic metal plate segment is 1-2m.
In step 43D, when the nth layer of asphalt is paved, the loose paving height of the nth layer of asphalt is higher than the top surface of the telescopic metal plate. And (4) rolling to enable the top surface of the compacted N-th layer of asphalt to be flush with the telescopic metal plate.
After the asphalt is paved, when rolling, a mode of combining rolling along the longitudinal bridge direction and rolling along the transverse bridge direction is adopted, and the compactness and the flatness of the bridge deck are improved.
And 3, filling the elastic filling member at the top of the expansion joint into a foam board, wherein the top surface of the foam board is flush with the top surface of the concrete pavement layer.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
1. the expansion joint device is improved into the embedded steel plate and the telescopic metal plate, the embedded steel plate is embedded in a concrete pavement layer at the bottom of a bridge floor, the telescopic metal plate is embedded in an asphalt pavement layer, the telescopic metal plate is in threaded connection with the embedded steel plate, meanwhile, the top surface of the telescopic metal plate is flush with the top surface of the asphalt pavement layer, no height difference exists, the flatness of the whole bridge floor is high, the driving comfort is improved, and the service life of the expansion joint is greatly prolonged.
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, also adopt first just gentle construction process after to can the difference in height between accurate control pitch bridge floor and 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. According to the invention, because the existing anchor rod structure is cancelled, when concrete at the bottom is paved, an expansion joint placing groove does not need to be reserved, and concrete is not needed to be cast on the anchor rod in situ, so that the height difference between the bridge floor of the asphalt layer and the top surface of the expansion joint is further avoided, the flatness of the whole bridge floor is high, the driving comfort is improved, and the service life of the expansion joint is greatly prolonged.
4. The telescopic metal plate of the expansion joint 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 view of a segment of expanded metal according to the invention.
Fig. 2 shows a schematic structure of the first asphalt layer of the present invention after paving.
Figure 3 shows a schematic of the top asphalt of the present invention after it has been loosely laid.
FIG. 4 shows a schematic of the structure of the top asphalt of the present invention after rolling.
Figure 5 shows a schematic view of the track engaging segment of the present invention when it is not installed.
Figure 6 shows a schematic view of the track engagement section of the present invention after installation.
The figure has the following components:
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 and 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 is further described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection 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.
In the present invention, the telescopic metal plate is preferably formed by splicing a plurality of telescopic metal plate segments 125 along a transverse bridge direction, and rubber bands 126 are preferably filled between adjacent telescopic metal plate segments.
At least two of the telescoping sheet metal sections are track engaging sections 124 for engaging tracks of paving and milling 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 to 2m, but may be other values such as 0.8m or 3m, and is specifically set as required.
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 embedded 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.
In step 2, 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 segments along the transverse bridge 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 to 2m.
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, mounting 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.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.
Claims (4)
1. A construction method without height difference of an asphalt surface layer at a bridge expansion joint is characterized by comprising the following steps: the method comprises the following steps:
step 1, paving a concrete pavement layer: 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: 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; each embedded steel plate is provided with a plurality of bolt holes; the top surfaces of the two pre-buried steel plates are flush with the top surface of the concrete pavement layer; the two embedded steel plates are adjacent to or communicated with the expansion joint; assuming that 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; each embedded steel plate is welded with the steel bars in the concrete pavement layer; each bolt hole on each pre-buried steel plate is matched with a detachable screw rod to prevent paved asphalt from entering the bolt hole;
step 3, elastically filling the top of the expansion joint: the elastic filling piece is filled at the top of the expansion joint;
step 4, paving an asphalt pavement layer, wherein the asphalt pavement layer adopts a mode of paving by N layers, wherein N is more than or equal to 2; the concrete paving method comprises the following steps:
step 41, paving a first layer of asphalt: uniformly spreading a first layer of asphalt on the concrete pavement layer, and rolling and flattening to form a first asphalt spreading 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: when N is larger than 2, repeating the step 41 until the paving of the N-1 th layer of asphalt is finished to form an N-1 th asphalt paving layer; when N =2, directly go to step 43;
43, paving the Nth layer of asphalt, wherein the concrete paving method comprises the following steps:
step 43A, excavating a telescopic plate embedding groove: 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; after a retractable plate embedding groove is formed by excavation, taking out the screw in each bolt hole;
step 43B, marking a track wheel passing area: marking an area needing to pass through of a crawler wheel in the crawler paver in the expansion plate embedding groove excavated in the step 43A;
step 43C, laying a telescopic metal plate: the telescopic metal plate is formed by splicing a plurality of sections of telescopic metal plate sections along the transverse bridge direction; wherein the telescopic metal plate segment corresponding to the crawler wheel passing area in step 43 is called a crawler engaging segment; splicing the telescopic metal plate sections except the crawler belt matching section in the transverse bridge direction in the telescopic plate embedding 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; when the telescopic metal plates are laid, the length of each telescopic metal plate segment is 1 to 2m;
step 43D, paving the Nth layer of asphalt: spreading the N layer of asphalt on two sides of the telescopic metal plate, and rolling to form an asphalt pavement layer of the bridge deck; rolling to make the top surface of the asphalt pavement layer flush with the top surface of the telescopic metal plate; in the paving and rolling process, the crawler wheels of the paving and rolling equipment need to pass through the crawler wheel passing area marked in the step 43B; when the nth layer of asphalt is paved, the loose paving height of the nth layer of asphalt is higher than the top surface of the telescopic metal plate; the top surface of the compacted N-th layer of asphalt is leveled with the telescopic metal plate through rolling; after asphalt is paved, when rolling, the compactness and the flatness of the bridge deck are improved by adopting a mode of combining rolling along a longitudinal bridge direction and rolling along a transverse bridge direction;
step 5, mounting the crawler belt matched with the segments: firstly cutting and removing asphalt in a tracked wheel passing area marked by the track, then placing a track matching section in the tracked wheel passing area, connecting a left metal plate and a left embedded steel plate in the track matching section in a threaded manner, and matching a right metal plate and a right embedded steel plate in the track matching section in a threaded manner;
through improving the expansion joint, cancelled current stock structure, so when bottom concrete pavement, need not to reserve the expansion joint and place the cavity, also need not to carry out cast in situ concrete to the stock, and owing to adopted the gentle technique of mating formation of just after first to make pitch layer bridge floor and expansion joint top surface not have the discrepancy in elevation, whole bridge face roughness is high, improves the comfort level of traveling, and prolongs the life at expansion joint by a wide margin.
2. The method for constructing the asphalt surface course at the bridge expansion joint without height difference as claimed in claim 1, wherein: in step 43C, when the telescopic metal plates are laid, the adjacent telescopic metal plate segments are filled and leveled by rubber belts.
3. The construction method of no height difference of the asphalt surface layer at the bridge expansion joint as claimed in claim 2, characterized in that: and 5, after the crawler belt matching sections are installed, filling rubber belts between the crawler belt matching sections and the adjacent telescopic metal plate sections smoothly.
4. The method for constructing the asphalt surface course at the bridge expansion joint without height difference as claimed in claim 1, wherein: in the step 3, the elastic filling member filled at the top of the expansion joint is a foam board, and the top surface of the foam board is flush with the top surface of the concrete pavement layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010903337.9A CN112195769B (en) | 2020-09-01 | 2020-09-01 | Construction method for no height difference of asphalt surface layer at bridge expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010903337.9A CN112195769B (en) | 2020-09-01 | 2020-09-01 | Construction method for no height difference of asphalt surface layer at bridge expansion joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112195769A CN112195769A (en) | 2021-01-08 |
| CN112195769B true CN112195769B (en) | 2022-12-20 |
Family
ID=74005155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010903337.9A Active CN112195769B (en) | 2020-09-01 | 2020-09-01 | Construction method for no height difference of asphalt surface layer at bridge expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112195769B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123226A (en) * | 2021-05-11 | 2021-07-16 | 云南阳光道桥股份有限公司 | Expansion joint asphalt concrete paving base plate device and construction method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202450439U (en) * | 2012-05-17 | 2012-09-26 | 四川成渝高速公路股份有限公司成仁分公司 | Expansion joint structure of seamless bridge in road engineering |
| CN104818669A (en) * | 2015-05-11 | 2015-08-05 | 苏交科集团股份有限公司 | Slipping type seamless telescopic device |
| US10323360B2 (en) * | 2016-03-07 | 2019-06-18 | Schul International Company, LLC | Durable joint seal system with flexibly attached cover plate |
| WO2018185351A1 (en) * | 2017-04-06 | 2018-10-11 | Ingeturarte, S.L. | Concertina slab with expansion and contraction joints having long useful life for bridge decks |
| CN110904832A (en) * | 2019-12-24 | 2020-03-24 | 河南省交通规划设计研究院股份有限公司 | Assembled bridge expansion joint device and construction method thereof |
-
2020
- 2020-09-01 CN CN202010903337.9A patent/CN112195769B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112195769A (en) | 2021-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5181657A (en) | Composite rubber/concrete railroad grade crossing system | |
| CN109235292B (en) | Railway bridge beam replacing process | |
| CN104594190B (en) | A kind of bridge seamless process stretching device and construction method thereof | |
| KR101780224B1 (en) | Concrete long sleeper block of fast-hardening track for improving rail track considering train operation construction method | |
| CN105525541A (en) | Novel prefabricated plate type damping track structure for rail traffic | |
| KR100891961B1 (en) | The construction infrastructure the use road the martial art as a matter of bridge of the bridge which is old in the railroad or the railroad respects the induction event a method of construction which shifts the bridge and the system | |
| CA2413610C (en) | Pre-fabricated warped pavement slab, forming and pavement systems, and mehods for installing and making same | |
| CN112195769B (en) | Construction method for no height difference of asphalt surface layer at bridge expansion joint | |
| CN104762873A (en) | Abutment hidden expansion device and construction method thereof | |
| JP4540632B2 (en) | Erection girder | |
| KR102105230B1 (en) | Railroad bridge construction method for keeping preexistence railroad track and rail service | |
| CN213571522U (en) | Bridge expansion joint device with bridge deck free of height difference | |
| JP6177468B1 (en) | Installation or replacement of tunnel inverts in service | |
| CN108547209A (en) | A kind of single hole precast hollow slab jointless bridge and its construction method | |
| KR101262755B1 (en) | Plate girder railway bridge having integrated cross beam and construction method using the same | |
| EA006338B1 (en) | Fixed track for rail vehicles and method for production thereof | |
| KR101705141B1 (en) | Improved technique of railway track ballast operation | |
| JP6567920B2 (en) | Road bridge telescopic device and road bridge telescopic device construction method | |
| US5353987A (en) | Railroad track system having vertically adjustable railroad tie and method of construction therefor | |
| DE19741059C1 (en) | Method for producing solid rail bed | |
| SK5252000A3 (en) | Ballastless track superstructure with prefabricated concrete slabs and process for their replacement | |
| DK2351884T3 (en) | Module support for a pre-fabricated railway track, railway track, profile and method for mounting railway tracks | |
| KR20150138625A (en) | Transition track structure of railway bridge deck end and Construction method | |
| JP2006112086A (en) | Structure of bridge and method for rebuilding bridge | |
| CN111926649A (en) | Reinforced integrally-built crossing plate for railway special line and line rail fixing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |