CN111576253A - Bridge deck pavement surface crack control method - Google Patents
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- CN111576253A CN111576253A CN202010429183.4A CN202010429183A CN111576253A CN 111576253 A CN111576253 A CN 111576253A CN 202010429183 A CN202010429183 A CN 202010429183A CN 111576253 A CN111576253 A CN 111576253A
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000004567 concrete Substances 0.000 claims abstract description 85
- 238000010276 construction Methods 0.000 claims abstract description 34
- 239000011241 protective layer Substances 0.000 claims abstract description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 94
- 239000010959 steel Substances 0.000 claims description 94
- 239000010410 layer Substances 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000004746 geotextile Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000004898 kneading Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 description 35
- 238000005336 cracking Methods 0.000 description 11
- 230000002787 reinforcement Effects 0.000 description 9
- 238000012797 qualification Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 230000002265 prevention Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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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
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Abstract
The invention belongs to the technical field of highway bridge deck pavement construction, and particularly relates to a method for controlling cracks on a surface of bridge deck pavement, which solves the problems that the surface of the pavement cracks due to the defects of the traditional bridge deck pavement construction process, so that the bridge construction quality is seriously influenced, the construction cost is increased, and the construction efficiency is reduced. The invention includes + claim 1. The method comprises the following steps: s1, bridge floor scum is cleaned and residual concrete is chiseled; s2, controlling a reinforcing steel mesh protective layer; s3, controlling concrete pouring; s4, controlling dough collection; s5, covering and curing the concrete; s6, engraving; and S7, false suture cutting. The method has the advantages that the generation of cracks on the paved surface is effectively controlled, reworking is not needed, the bridge construction quality is improved, the construction cost is greatly reduced, and the construction efficiency is improved; but also ensures the flatness and the overall appearance quality of the bridge deck pavement.
Description
Technical Field
The invention belongs to the technical field of highway bridge deck pavement construction, and particularly relates to a method for controlling cracks on a bridge deck pavement surface.
Background
The bridge deck pavement is to pour a layer of cast-in-place concrete firstly, then pave a layer of bridge deck waterproof material on the top of the cast-in-place concrete, and finally pave a layer of asphalt concrete, when the concrete is cast in place, a layer of reinforcing mesh needs to be paved to form a reinforcing mesh protective layer, the distance between the reinforcing mesh and the top surface of the cast-in-place concrete is the upper layer thickness L2, and the distance between the reinforcing mesh and the bottom surface of the cast-in-place concrete is the lower layer thickness L1 (as shown in figure.
When a layer of cast-in-place concrete is poured, the most common construction defects are cracks with different degrees on the surface after the construction is finished, and more factors influencing the surface cracking of the pavement layer are mainly reflected in that the concrete of the pavement layer is not vibrated in place, the thickness of the anti-cracking reinforcing mesh protective layer and the surface folding process do not meet the requirements, and the pavement layer is not maintained and the false joint is cut according to the requirements.
The traditional construction process has the following problems:
1. the steel bar mesh is directly laid without support, so that the steel bar mesh can sink or float upwards in the construction process, the thickness of a protective layer of the steel bar mesh is larger or smaller, and a pavement layer is cracked;
2. in the traditional lapping of the reinforcing mesh, lapping parts of two lapped reinforcing meshes are directly overlapped (as shown in fig. 3), so that a fall exists after the two lapped reinforcing meshes are lapped, and the lapping height of the reinforcing mesh is invisibly raised or reduced, thereby affecting the qualification rate of a reinforcing mesh protective layer;
3. when concrete is poured, the concrete tank car is directly arranged on the bridge floor to pour and roll the steel mesh, so that the steel mesh cannot play a role in cracking prevention;
4. a paver adopted for pouring the pavement layer does not have the vibration function, so that the vibration effect cannot be achieved, and concrete cracking of the pavement layer is easily caused;
5. after the pavement layer is poured, the surface is not strictly closed according to the construction process of closing the surface, so that the surface of the concrete is not compact and cracks are easy to generate;
6. the surface of the pavement layer is easy to crack because the maintenance time of the pavement layer is not enough and no false seam is arranged.
Bridge deck pavement construction diseases seriously affect bridge construction quality, can cause the bridge deck pavement layer to rework when serious, increase construction cost, reduce construction efficiency, influence construction progress and enterprise construction image.
Disclosure of Invention
The invention provides a method for controlling cracks on a surface of a bridge deck pavement, aiming at solving the problems that the surface of the pavement is cracked due to the defects of the traditional bridge deck pavement construction process, so that the bridge construction quality is seriously influenced, the construction cost is increased, and the construction efficiency is reduced.
The invention is realized by adopting the following technical scheme: a bridge deck pavement surface crack control method comprises the following steps:
s1, bridge floor scum is cleaned and residual concrete is chiseled;
s2, controlling a reinforcing steel mesh protective layer;
laying point positions on the bridge floor, drilling holes at the point positions, installing erection steel bars in the holes, wherein the ground clearance of the erection steel bars is the lower layer thickness designed by the steel bar mesh protective layer, and the steel bar mesh is laid on the erection steel bars and is welded with the erection steel bars, so that the ground clearance of the steel bar mesh is ensured to maintain the lower layer thickness in the construction process;
the steel bar mesh is formed by overlapping a plurality of steel bar meshes, before the steel bar mesh is laid, longitudinal steel bars at the lap joint of adjacent steel bar meshes are taken off, the steel bar mesh is laid, then transverse steel bars at the lap joint of the steel bar meshes are welded in a staggered lap joint mode on the same layer, the adjacent steel bar meshes are ensured to be at the same height after being overlapped, and finally the taken longitudinal steel bars are spot-welded at the lap joint;
s3, controlling concrete pouring;
s4, controlling dough collection;
s5, covering and curing the concrete;
s6, engraving;
and S7, false suture cutting.
Further, in S2, the points of the set-up steel bars are arranged in a quincunx shape of 1.5m × 1.5 m.
Further, in S2, a reinforcing bar head is wedged into the hole drilled at the point position, and the reinforcing bar head is welded with the reinforcing bar horizontally at a position where the thickness of the upper layer of the reinforcing bar mesh protective layer is reduced from the designed elevation of the reinforcing bar mesh protective layer by adopting a standard band threading method on both sides to form the erection reinforcing bar.
Further, in S2, a prefabricated erection steel bar is wedged into the hole drilled at the point position, the prefabricated erection steel bar includes a vertical steel bar head and a horizontal end steel bar which are connected into a whole, and the ground clearance of the horizontal end steel bar is the lower layer thickness designed for the steel mesh protective layer.
Further, in S2, at least two longitudinal bars are removed from the overlapped part of the adjacent reinforcing meshes, so as to ensure that the overlapped length of the adjacent reinforcing meshes is not less than two meshes of the reinforcing meshes.
Further, the concrete pouring control of S3 is to wet the bridge floor without water accumulation, continuously pour concrete from the bottom to the high, pour concrete with a concrete pump truck, distribute, pave and vibrate the concrete with a vibrating rod, and then level the concrete with a leveling machine with an attached vibrator to ensure the concrete is vibrated compactly.
Further, in the face retracting control in S4, first face retracting is performed, preliminary plastering is performed while the concrete is fully leveled by the leveling machine, cement paste on the surface of the concrete is discharged by the preliminary plastering, and precise leveling is performed after the preliminary plastering; secondly, carrying out secondary surface collection, and kneading and collecting the concrete surface after the primary surface collection; and finally, performing local surface folding, and manually performing steel surface wiping and folding treatment on the contact part of the concrete and the standard belt of the bridge floor to ensure that the concrete is dense and does not crack.
Further, in the step S5, the concrete is covered and maintained by using geotextile, and then the surface of the geotextile is sprayed with water for maintenance for not less than 7 days, so as to ensure that the concrete is in a wet state during the maintenance period.
Further, after the grooving is performed in the step S6 and the concrete finishing is controlled for 12 hours, the grooving is performed on the bridge deck pavement by using a uniform line hanging method in a special grooving machine, so that the line type of the grooving is ensured to be straight, the direction of the grooving is consistent with the direction of a bridge deck cross slope, and the grooving depth is 3-5 mm.
Further, the false seam depth in S7 is 1cm-1.5 cm.
Compared with the prior art, the invention has the beneficial effects that:
a layer of erection steel bars distributed in a quincunx shape is welded at the bottom of the steel bar net piece, so that the steel bar net piece is supported and fixed, the steel bar net piece is prevented from sinking and floating in the construction process, and the pavement layer is prevented from cracking;
the two lapped reinforcing steel bar meshes are welded and fixed in a staggered manner on the same layer, and the lapping method avoids the condition that the two lapped reinforcing steel bar meshes have a fall after being lapped, so that the qualification rate of the reinforcing steel bar mesh protective layer is ensured;
concrete is poured by a concrete pump truck, so that the reinforcing mesh protective layer is not rolled during concrete pouring, the reinforcing mesh plays a role in cracking resistance, and the pavement layer is prevented from cracking;
the concrete is leveled in a full width manner by adopting a leveling machine with an attached vibrator, so that the leveling and paving function is realized, the concrete vibrating effect is obvious, the concrete vibrating compaction and laitance removal are ensured, and the cracking of a pavement layer is avoided;
therefore, the method effectively controls the generation of cracks on the paved surface, does not need rework, improves the bridge construction quality, greatly reduces the construction cost and improves the construction efficiency; but also ensures the flatness and the overall appearance quality of the bridge deck pavement.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a cross-sectional view of the bridge deck pavement;
FIG. 3 is a schematic view of a conventional overlapping manner of a mesh sheet;
FIG. 4 is a schematic view of the overlapping manner of the steel mesh of the present invention 1;
FIG. 5 is a schematic view of the overlapping manner of the steel mesh of the present invention 2;
FIG. 6 is a schematic view of the arrangement of the erection reinforcement of the present invention;
FIG. 7 is a schematic view of the construction of the erected rebar of the present invention;
FIG. 8 is a schematic view of the connection between the mesh and the erection reinforcement according to the present invention;
in the figure: 1-steel bar mesh, 1.1-steel bar mesh, 1.1.1-transverse steel bar, 1.1.2-longitudinal steel bar, 2-erection steel bar, 2.1-steel bar head, 2.2-end steel bar, 3-cast-in-place concrete, 4-bridge deck waterproof material, 5-asphalt concrete, L1-lower layer thickness and L2-upper layer thickness.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, the present invention provides a technical solution: a bridge deck pavement surface crack control method comprises the following steps:
s1, bridge floor scum is cleaned and residual concrete is chiseled; the bridge floor is roughly cleaned, partial residual concrete is chiseled, a blower and a high-pressure water gun of a bridge floor user are used for secondary cleaning to ensure that no accumulated water exists, floating slurry and loose concrete of wet joints between the top surface of the bridge and the bridge are cleaned, particularly, cast-in-place positions such as a slurry stopping belt of a leveling layer at the root part of a guardrail, wet joints and the like and joints of precast beams need to be controlled in a key mode, so that soil dust, floating slurry and loose concrete are avoided, the bridge floor is ensured to have no accumulated water, and connection between new and old concrete is ensured;
s2, controlling a reinforcing steel mesh protective layer;
as shown in fig. 4,5 and 8, a point is arranged on the bridge floor, a hole is drilled at the point, an erection steel bar 2 is arranged in the hole, the erection steel bar 2 is wedged into the hole to a depth of 4-5cm, the ground clearance of the erection steel bar 2 is the lower layer thickness L1 designed by the steel bar mesh protective layer, the steel bar mesh 1 is laid on the erection steel bar 2 and is welded with the erection steel bar 2, the ground clearance of the steel bar mesh 1 is ensured to maintain the lower layer thickness L1 in the construction process, and thus the steel bar mesh 1 cannot sink or float upwards in the construction process, and the pavement layer is prevented from cracking;
the reinforcing mesh sheet 1 is formed by overlapping a plurality of reinforcing mesh sheets 1.1, before the reinforcing mesh sheet 1 is laid, longitudinal reinforcing bars 1.1.2 at the overlapping part of adjacent reinforcing mesh sheets 1.1 are taken off, the reinforcing mesh sheet 1 is laid, and then transverse reinforcing bars 1.1.1 at the overlapping part of the reinforcing mesh sheets 1.1 are welded in a staggered overlapping mode on the same layer, so that the adjacent reinforcing mesh sheets 1.1 are at the same height after being overlapped, the condition that the two overlapped reinforcing mesh sheets have a fall after being overlapped is avoided, and the qualification rate of a reinforcing mesh sheet protective layer is ensured; finally, spot welding the removed longitudinal steel bar 1.1.2 at the lap joint;
s3, controlling concrete pouring;
s4, controlling dough collection;
s5, covering and curing the concrete;
s6, engraving;
s7, false suture cutting; firstly, determining the position of the false seam, then cutting along the position of the false seam to ensure that the false seam is straight and beautiful, and cleaning up cutting sundries in time after cutting is finished so as to avoid polluting a bridge deck pavement layer; the cutting of false seam is for preventing the layer of mating formation from producing irregular crack, influences the life of bridge floor, and bridge floor concrete placement, receipts face should in time cut false seam after accomplishing, and horizontal longitudinal direction all sets up false seam, and the setting of false seam interval can not be too big, and the position should be appropriate, and horizontal false seam generally sets up in mound top, midspan department, and vertical false seam sets up one along central longitudinal direction.
In S2, the points of the erection reinforcement 2 are arranged in a quincunx shape of 1.5m × 1.5m as shown in fig. 6.
And S2, wedging a steel bar head 2.1 into the hole at the point position, and horizontally welding an end steel bar 2.2 at the position of the upper layer thickness L2 designed by the steel bar mesh protective layer from the designed elevation of the steel bar mesh protective layer on the steel bar head 2.1 by adopting a method of hanging a through line by adopting a standard belt at two sides to form the erection steel bar 2.
In S2, as shown in fig. 7, a prefabricated erection reinforcement 2 is wedged into the hole at the point, the prefabricated erection reinforcement 2 includes a vertical reinforcement head 2.1 and a horizontal end reinforcement 2.2 connected as a whole, and the ground clearance of the horizontal end reinforcement 2.2 is the lower layer thickness L1 designed for the reinforcement mesh protection layer.
The reinforcing mesh 1 is laid on the end reinforcing steel bar 2.2 of the erection reinforcing steel bar 2 and welded with the reinforcing bar head 2.1 and the end reinforcing steel bar 2.2 of the erection reinforcing steel bar 2.
At least two longitudinal steel bars 1.1.2 at the overlapped part of the adjacent steel bar meshes 1.1 are removed in S2, so that the overlapped length of the adjacent steel bar meshes 1.1 is not less than two meshes of the steel bar meshes 1.1.
S3, the concrete pouring control, firstly, the bridge surface is moistened, no water accumulation is needed, concrete is continuously poured from the bottom to the high, concrete is poured by a concrete pump truck, (so, a reinforcing mesh protective layer is not rolled when concrete is poured), meanwhile, local material distribution, paving and vibrating concrete by a vibrating rod are carried out, then, a leveling machine with an attached vibrator is adopted to carry out full-width leveling, the concrete is guaranteed to be vibrated compactly (because if the concrete is not vibrated compactly, surface cracking is easy to cause, the leveling machine of the application must be provided with the attached vibrator), in order to prevent surface cracking, a time period with low air temperature is selected as far as possible when concrete is poured, and generally, the concrete is poured after 5 pm by opening the disk.
The face retracting control in the step S4 is to firstly perform a first face retracting, perform a preliminary face plastering while the leveling machine fully levels the concrete, perform a preliminary face plastering by using a wood plastering on an operation platform of the leveling machine by an operator, discharge cement paste on the concrete surface by the preliminary face plastering, and manually scrape the concrete surface accurately with an aluminum alloy scraping bar after the preliminary face plastering; secondly, carrying out secondary surface collection, and kneading and collecting the concrete surface by using a polishing machine after the primary surface collection; and finally, performing local surface folding, and manually performing steel surface wiping and folding treatment on the contact part of the concrete and the standard belt of the bridge floor to ensure that the concrete is dense and does not crack.
And S5, covering and curing the concrete, namely firstly covering the concrete by using the geotextile, and then spraying water on the surface of the geotextile for curing for not less than 7 days to ensure that the concrete is in a wet state in a curing period.
After the grooving is carried out in S6 and the concrete face-closing control is carried out for 12 hours, grooving is carried out on a special grooving machine for bridge deck pavement by adopting a uniform line hanging method, so that the line type of the grooving is ensured to be straight, and the direction of the grooving is consistent with the direction of a cross slope of the bridge deck, and the grooving is conveniently connected with a subsequent asphalt pavement layer; the depth of the carving pattern is 3-5 mm.
The depth of the false seam in the S7 is 1cm-1.5 cm.
And cutting false seams, carving and galling to ensure effective connection of a subsequent asphalt pavement layer and prevent large-area irregular cracks from appearing on the surface.
The method is compared with the traditional method for the qualification rate of bridge deck pavement cracks and flatness as follows:
| quality defect | Conventional methods | Method for producing a composite material | Detection method |
| Bridge deck pavement crack yield | 60% | 99% | In situ test |
| Percent of pass of flatness | 55% | 96% | 3m straight ruler |
Therefore, the method greatly improves the qualification rate of the bridge deck pavement cracks and the qualification rate of the flatness, thereby greatly improving the bridge construction quality and ensuring the flatness and the integral appearance quality of the bridge deck pavement.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A bridge deck pavement surface crack control method is characterized by comprising the following steps: the method comprises the following steps:
s1, bridge floor scum is cleaned and residual concrete is chiseled;
s2, controlling a reinforcing steel mesh protective layer;
the method comprises the following steps of (1) arranging point positions on a bridge floor, drilling holes at the point positions, installing erection steel bars (2) in the holes, wherein the ground clearance of the erection steel bars (2) is the lower layer thickness (L1) designed by a steel bar mesh protective layer, and paving steel bar meshes (1) on the erection steel bars (2) and welding and connecting the steel bar meshes with the erection steel bars (2) to ensure that the ground clearance of the steel bar meshes (1) maintains the lower layer thickness (L1) in the construction process;
the steel bar net piece (1) is formed by overlapping a plurality of steel bar nets (1.1), before the steel bar net piece (1) is laid, longitudinal steel bars (1.1.2) at the overlapping part of the adjacent steel bar nets (1.1) are taken off, the steel bar net piece (1) is laid, then transverse steel bars (1.1.1) at the overlapping part of the steel bar nets (1.1) are welded in a staggered overlapping mode on the same layer, the adjacent steel bar nets (1.1) are ensured to be at the same height after being overlapped, and finally the longitudinal steel bars (1.1.2) which are taken off are spot-welded at the overlapping part;
s3, controlling concrete pouring;
s4, controlling dough collection;
s5, covering and curing the concrete;
s6, engraving;
and S7, false suture cutting.
2. A method of controlling cracks in a surface of a bridge deck pavement according to claim 1 or claim 2, wherein: in S2, the points of the erection steel bars (2) are arranged in a quincuncial shape of 1.5m multiplied by 1.5 m.
3. A method of controlling cracks in a surface of a bridge deck pavement according to claim 1 or claim 2, wherein: and S2, wedging a reinforcing steel bar head (2.1) in the hole at the point position, and horizontally welding the end reinforcing steel bar (2.2) at the position of the upper layer thickness (L2) of the reinforcing steel bar mesh protective layer from the designed elevation of the reinforcing steel bar mesh protective layer on the reinforcing steel bar head (2.1) by adopting a method of standard belt threading on two sides to form the erection reinforcing steel bar (2).
4. A method of controlling cracks in a surface of a bridge deck pavement according to claim 1 or claim 2, wherein: and S2, wedging prefabricated and formed erection steel bars (2) into the drill holes at the point positions, wherein the prefabricated and formed erection steel bars (2) comprise vertical steel bar heads (2.1) and horizontal end steel bars (2.2) which are connected into a whole, and the ground clearance of the horizontal end steel bars (2.2) is the lower-layer thickness (L1) designed for the steel mesh protective layer.
5. The method of claim 1, wherein the method further comprises: at least two longitudinal steel bars (1.1.2) at the overlapped part of the adjacent steel bar meshes (1.1) are removed in S2, and the overlapping length of the adjacent steel bar meshes (1.1) is ensured to be not less than two meshes of the steel bar meshes (1.1).
6. The method of claim 1, wherein the method further comprises: s3, the concrete pouring control includes wetting the bridge surface, continuously pouring concrete from bottom to high, adopting concrete pump truck to pour concrete, distributing, paving and vibrating the concrete with vibrating rod, and leveling with leveling machine to ensure the concrete to be vibrated compactly.
7. The method of claim 1, wherein the method further comprises: the face retracting control in S4 is to perform first face retracting, perform preliminary plastering while the leveling machine fully levels the concrete, discharge cement slurry on the surface of the concrete by the preliminary plastering, and perform precise leveling after the preliminary plastering; secondly, carrying out secondary surface collection, and kneading and collecting the concrete surface after the primary surface collection; and finally, performing local surface folding, and manually performing steel surface wiping and folding treatment on the contact part of the concrete and the standard belt of the bridge floor to ensure that the concrete is dense and does not crack.
8. The method of claim 1, wherein the method further comprises: and S5, covering and curing the concrete, namely firstly covering the concrete by using the geotextile, and then spraying water on the surface of the geotextile for curing for not less than 7 days to ensure that the concrete is in a wet state in a curing period.
9. The method of claim 1, wherein the method further comprises: and (S6) after the grooving is carried out and the concrete face collection is controlled for 12 hours, grooving is carried out on a special grooving machine for bridge deck pavement by adopting a uniform line hanging method, so that the line type of the grooving is ensured to be straight, the direction of the grooving is consistent with the direction of a cross slope of the bridge deck, and the grooving depth is 3-5 mm.
10. The method of claim 1, wherein the method further comprises: the depth of the false seam in the S7 is 1cm-1.5 cm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047163A (en) * | 2021-04-24 | 2021-06-29 | 南京润华建设集团有限公司 | Bridge deck pavement process and device applied to bridge deck pavement process |
| CN114753258A (en) * | 2022-04-27 | 2022-07-15 | 中铁十四局集团第三工程有限公司 | Construction method for paving whole bridge deck based on UHPC |
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Application publication date: 20200825 |