CN114263079A - Precast concrete pavement slab structure for rapid pavement repair and construction method thereof - Google Patents
Precast concrete pavement slab structure for rapid pavement repair and construction method thereof Download PDFInfo
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- CN114263079A CN114263079A CN202111423857.0A CN202111423857A CN114263079A CN 114263079 A CN114263079 A CN 114263079A CN 202111423857 A CN202111423857 A CN 202111423857A CN 114263079 A CN114263079 A CN 114263079A
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 95
- 238000010276 construction Methods 0.000 title claims abstract description 45
- 239000004567 concrete Substances 0.000 claims abstract description 97
- 239000011440 grout Substances 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 45
- 238000004873 anchoring Methods 0.000 claims description 23
- 239000003292 glue Substances 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000011065 in-situ storage Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention provides a precast concrete pavement slab structure for quickly repairing a pavement and a construction method thereof. A concrete plate body of the concrete pavement slab is internally provided with a steel bar net piece; the side of the concrete plate body is provided with a protruding rod piece or a slot. And a grouting hole at the bottom of the concrete plate body, a grout outlet hole at the bottom of the plate body and a hoisting hole are arranged on the concrete plate body, and a grouting diversion trench is arranged at the bottom of the concrete plate body. The method is characterized in that corresponding rods or grooves are arranged on the original concrete pavement, the precast concrete pavement slab is connected with the original concrete pavement by grouting in the grooves, and the precast concrete pavement slab is tightly attached to the base layer by grouting at the bottom of the precast concrete pavement slab, so that the connection of the precast concrete pavement slab, the original pavement and the base layer is ensured, and the problems of poor connection effect and poor durability of the original concrete pavement by adopting a cast-in-place concrete pavement repairing mode in the prior art are solved. Compared with a mode of casting concrete in situ, the construction time is short, the hardening speed is high, and therefore traffic can be quickly recovered.
Description
Technical Field
The invention belongs to the technical field of prefabricated concrete pavements, and particularly relates to a prefabricated concrete pavement slab structure for quickly repairing a pavement and a construction method thereof.
Background
At present, concrete pavement projects such as municipal administration, bridges, airport pavements and the like in China are mostly damaged, the concrete pavement projects are usually repaired in a cast-in-place concrete mode after the damage, the cast-in-place concrete has long hardening time, the traffic restoration time is greatly influenced, the cast-in-place concrete is difficult to maintain in the field environment, the repaired concrete pavement and the original concrete pavement have poor connection effect, more cracks, poor durability and low service life.
The production and maintenance of the precast concrete pavement slab are carried out in a factory, and the quality of the precast concrete pavement slab is obviously superior to that of cast-in-place construction, so that the damaged concrete pavement is repaired in a mode of factory prefabrication and field installation, cracks of the pavement can be effectively reduced, the quality and durability of the pavement concrete are improved, and the service life of the pavement is prolonged.
Disclosure of Invention
The invention aims to solve the technical problem of providing a precast concrete pavement slab structure for quickly repairing a pavement and a construction method thereof, and aims to solve the problems that the connection effect of a concrete pavement and the original concrete pavement is poor and the traffic cannot be quickly recovered by adopting a cast-in-place concrete mode in the prior art.
The invention is realized in this way, a precast concrete pavement slab for rapid pavement restoration, which comprises a concrete slab body, wherein a steel bar net piece is arranged in the concrete slab body; the side surface of the concrete plate body is provided with a plurality of rods protruding out or a plurality of slots; the concrete plate body is provided with a plurality of plate bottom grouting holes, plate bottom grout outlet holes and hoisting holes, wherein the plate bottom grouting holes and the plate bottom grout outlet holes are through holes, and the bottom of the concrete plate body is provided with grouting diversion trenches communicated with the plate bottom grouting holes and the plate bottom grout outlet holes.
In one embodiment, the rod member at the side of the concrete slab is a dowel.
In one embodiment, the slot on the side of the concrete slab is an anchoring tongue-and-groove; a mortise grouting hole and a mortise grout outlet are formed in the concrete plate body at positions corresponding to the anchoring mortise, and the mortise grouting hole and the mortise grout outlet are through holes; the top surface of each anchoring mortise is wider than the bottom surface.
In one embodiment, the precast concrete pavement slab is provided with a connecting plate, the groove on the side surface of the concrete slab body is a slab groove, and the top surface of the slab groove is provided with an opening corresponding to the top surface of the concrete slab body.
In one embodiment, the plate groove is deeper and wider than the connecting plate, and the plate groove is longer than the connecting plate.
In order to solve the technical problem, the construction method for quickly repairing the pavement by applying the precast concrete pavement slab is also provided, and the method comprises the following steps:
step S1: in a factory, producing precast concrete pavement slabs according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement according to the size of the precast concrete pavement, and performing base layer repairing construction;
step S3: slotting the side surface of the removed original concrete pavement, wherein the number and the spacing of the slots are matched with the dowel bars of the precast concrete pavement slab, and the slots are wide at the lower part and narrow at the upper part;
step S4: laying a precast concrete pavement slab, placing a dowel bar in the groove, and adjusting the height;
step S5: selecting a variety of grouting materials according to the traffic recovery time requirement, and premixing the grouting materials;
step S6, grouting the grouting material into the slots and trowelling, grouting the grouting material through the grouting holes at the bottom of the plate by grouting equipment, and stopping when the grout is discharged from the grout outlet at the bottom of the plate;
step S7: filling grouting material at the lower part of a joint between the precast concrete pavement slab and the original concrete pavement, and plugging the upper part by using joint filling glue;
step S8: and after the grouting material is hardened, the joint filling glue is cured, and the construction is finished.
In order to solve the technical problems, the invention also provides a second construction method for quickly repairing a pavement by applying the precast concrete pavement slab, which comprises the following steps:
step S1: in a factory, producing precast concrete pavement slabs according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement according to the size of the precast concrete pavement, and performing base layer repairing construction;
step S3: embedding anchoring steel bars into the side surface of the removed original concrete pavement in a steel bar embedding mode, wherein the number and the spacing of the anchoring steel bars are matched with those of anchoring mortises of the precast concrete pavement;
step S4: laying a precast concrete pavement slab, placing the anchoring steel bars in the anchoring mortises, and adjusting the height;
step S5: selecting a variety of grouting materials according to the traffic recovery time requirement, and premixing the grouting materials;
step S6, grouting the grouting material through the mortise grouting hole by grouting equipment, and stopping when grout is discharged from the mortise grouting hole; grouting the grouting material through the plate bottom grouting hole by using grouting equipment, and stopping when the plate bottom grout outlet hole discharges grout;
step S7: filling grouting material at the lower part of a joint between the precast concrete pavement slab and the original concrete pavement, and plugging the upper part by using joint filling glue;
step S8: and after the grouting material is hardened, the joint filling glue is cured, and the construction is finished.
In order to solve the technical problems, the invention also provides a third construction method for quickly repairing a pavement by applying the precast concrete pavement slab, which comprises the following steps:
step S1: in a factory, producing precast concrete pavement slabs according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement according to the size of the precast concrete pavement, and performing base layer repairing construction;
step S3: laying a precast concrete pavement slab and adjusting the height;
step S4: grooving the original concrete pavement at the position corresponding to the slab groove, wherein the length and the depth of the grooving are consistent with those of the slab groove;
step S5: connecting plates are arranged in the plate grooves and the cutting grooves;
step S6, filling grouting material or epoxy resin in the plate groove and the cutting groove and leveling;
step S7: filling grouting material at the lower part of a joint between the precast concrete pavement slab and the original concrete pavement, and plugging the upper part by using joint filling glue;
step S8: and after the grouting material is hardened, the joint filling glue is cured, and the construction is finished.
Compared with the prior art, the invention has the beneficial effects that:
the invention uses the precast concrete road slab in factory, arranges the open slot or the protruding member on the side surface at intervals, arranges the corresponding member or open slot on the original concrete road surface, realizes the connection between the precast concrete road slab and the original concrete road surface by grouting in the slot, and realizes the close fit between the precast concrete road slab and the base layer by grouting to the bottom of the precast concrete road slab, thereby ensuring the connection between the precast concrete road slab and the original road surface and the base layer, and overcoming the problems of poor connection effect and poor durability between the cast-in-situ concrete road surface repairing mode and the original concrete road surface in the prior art. Compared with a mode of casting concrete in situ, the construction time is short, the hardening speed is high, and therefore traffic can be quickly recovered.
Drawings
Fig. 1 is a schematic top view of a precast concrete pavement slab for rapid pavement restoration according to an embodiment of the present invention;
FIG. 2 is a schematic bottom view of the precast concrete pavement slab shown in FIG. 1;
FIG. 3 is an installation schematic view of the precast concrete pavement slab shown in FIG. 1;
FIG. 4 is a diagram of a joint of the precast concrete pavement slab shown in FIG. 1 with an original concrete pavement;
FIG. 5 is a schematic view illustrating the construction of a joint between the precast concrete pavement slab of FIG. 1 and an original concrete pavement;
fig. 6 is a schematic top view of a precast concrete pavement slab for rapid pavement restoration according to a second embodiment of the present invention;
FIG. 7 is a diagram of a joint of the precast concrete pavement slab of FIG. 6 with an original concrete pavement;
fig. 8 is a schematic top view of a precast concrete pavement slab for rapid pavement restoration according to a third embodiment of the present invention;
fig. 9 is a diagram of a connection node of the precast concrete pavement slab of fig. 8 with an original concrete pavement.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
referring to fig. 1 and fig. 2, a precast concrete pavement slab a for rapid pavement repair according to the embodiment is shown, and includes a concrete slab body 1, wherein a steel mesh is disposed in the concrete slab body 1; the side of the concrete plate body 1 is provided with a plurality of dowel bars 2 protruding out, the dowel bars 2 are arranged at intervals, and the dowel bars 2 can be arranged on four sides of the concrete plate body 1.
The concrete slab body 1 is provided with a plurality of slab bottom grouting holes 11, slab bottom grout outlet holes 12 and hoisting holes 13, wherein the slab bottom grouting holes 11 and the slab bottom grout outlet holes 12 are through holes, and the bottom of the concrete slab body 1 is provided with grouting diversion trenches 14 communicated with the slab bottom grouting holes 11 and the slab bottom grout outlet holes 12.
Referring to fig. 3, the embodiment further provides a construction method for quickly repairing a road surface by applying the precast concrete pavement slab a, which includes the following steps:
step S1: producing precast concrete pavement slabs A in a factory according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement D according to the size of the precast concrete pavement slab A, and performing repair construction on the base layer E;
step S3: slotting the side surface of the original concrete pavement D after being removed, wherein the number and the spacing of the slots D1 are matched with the dowel bars 2 of the precast concrete pavement slab A, please refer to FIG. 4, and the slot D1 is wide at the lower part and narrow at the upper part;
step S4: laying a precast concrete pavement slab A, placing the dowel bar 2 in the groove D1, and adjusting the height;
step S5: selecting a variety of grouting materials 3 according to the traffic restoration time requirement, and premixing the grouting materials 3;
step S6, grouting material 3 into the slot D1 and trowelling, grouting material 3 through the plate bottom grouting hole 11 by grouting equipment, and stopping when the plate bottom grout outlet 12 discharges grout;
step S7: referring to fig. 5, the lower part of the joint between the precast concrete pavement slab a and the original concrete pavement D is filled with grouting material 3, and the upper part is sealed by gap-filling glue 4;
step S8: and after the grouting material 3 is hardened, the joint filling glue 4 is cured, and the construction is finished.
Example two:
referring to fig. 6, a second precast concrete pavement slab B for rapid pavement restoration according to the present embodiment is shown, which is different from the first precast concrete pavement slab B in that:
the concrete plate body 1 side of this embodiment has seted up anchor tongue-and-groove 15, and a plurality of anchor tongue-and-groove 15 intervals set up, can all set up anchor tongue-and-groove 15 in four sides of concrete plate body 1.
A mortise grouting hole 16 and a mortise grout outlet hole 17 are formed in the position, corresponding to the anchoring mortise 15, of the concrete plate body 1, and the mortise grouting hole 16 and the mortise grout outlet hole 17 are through holes; the top face of each anchoring groove 15 is wider than the bottom face.
The embodiment also provides a construction method for quickly repairing a road surface by applying the precast concrete pavement slab B, which comprises the following steps:
step S1: in a factory, producing precast concrete pavement slabs B according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement D according to the size of the precast concrete pavement B, and performing repair construction on the base layer E;
step S3: referring to fig. 7, the original concrete pavement D after being removed is implanted with anchoring steel bars 5 in a manner of planting steel bars, and the number and the spacing of the anchoring steel bars 5 are matched with the anchoring mortises 15 of the precast concrete pavement slab B;
step S4: laying a precast concrete pavement slab B, placing the anchoring steel bars 5 in the anchoring mortises 15, and adjusting the height;
step S5: selecting a variety of grouting materials according to the time requirement of traffic recovery, and premixing the grouting materials 3;
step S6, grouting material 3 through the mortise grouting hole 16 by grouting equipment, and stopping when grout is discharged from the mortise grout outlet 17; grouting the grouting material 3 through the plate bottom grouting hole 11 by using grouting equipment, and stopping when the grout is discharged from the plate bottom grout outlet hole 12;
step S7: the lower part of a joint between the precast concrete pavement slab B and the original concrete pavement D is filled with grouting material 3, and the upper part is sealed by gap filling glue 4;
step S8: and after the grouting material 3 is hardened, the joint filling glue 4 is cured, and the construction is finished.
Example three:
referring to fig. 8, a third precast concrete pavement slab for rapid pavement restoration according to the present embodiment is shown, which is different from the first precast concrete pavement slab in that:
referring to fig. 9, the precast concrete pavement slab C of the present embodiment is provided with a connecting plate 6, the groove on the side surface of the concrete slab 1 is a slab groove 18, and the top surface of the slab groove 18 has an opening corresponding to the top surface of the concrete slab 1.
The depth and width of the plate groove 18 are slightly larger than the connecting plate 6, and the length of the plate groove 18 is slightly longer than 1/2 of the length of the connecting plate 6.
The embodiment also provides a construction method for quickly repairing a road surface by applying the precast concrete pavement slab C, which comprises the following steps:
step S1: in a factory, producing precast concrete pavement slabs C according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement according to the size of the precast concrete pavement slab C, and repairing and constructing the base layer E;
step S3: laying a precast concrete pavement slab C, and adjusting the height;
step S4: grooving at the position corresponding to the plate groove 18 on the original concrete pavement D, wherein the length and the depth of the grooving are consistent with those of the plate groove 18;
step S5: the connection plate 6 is inserted into the plate groove 18 and the cutting groove;
step S6, filling grouting material 3 or epoxy resin in the plate groove 18 and the cutting groove, and leveling;
step S7: the lower part of a joint between the precast concrete pavement slab C and the original concrete pavement D is filled with grouting material 3, and the upper part is sealed by gap filling glue 4;
step S8: and after the grouting material 3 is hardened, the joint filling glue 4 is cured, and the construction is finished.
By combining the three embodiments, the invention can be seen that the precast concrete pavement slab is prefabricated in a factory, the side surfaces of the precast concrete pavement slab are provided with the grooves or the protruded rods at intervals, the original concrete pavement is provided with the corresponding rods or the grooves, the precast concrete pavement slab is connected with the original concrete pavement by grouting in the grooves, and the precast concrete pavement slab is tightly attached to the base layer by grouting at the bottom of the precast concrete pavement slab, so that the connection between the precast concrete pavement slab and the original pavement and the base layer is ensured, and the problems of poor connection effect and poor durability of the existing cast-in-place concrete pavement repairing method and the original concrete pavement are solved. Compared with a mode of casting concrete in situ, the construction time is short, the hardening speed is high, and therefore traffic can be quickly recovered.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A precast concrete pavement slab for quickly repairing a pavement is characterized by comprising a concrete slab body, wherein a steel bar net piece is arranged in the concrete slab body; the side surface of the concrete plate body is provided with a plurality of rods protruding out or a plurality of slots; the concrete plate body is provided with a plurality of plate bottom grouting holes, plate bottom grout outlet holes and hoisting holes, wherein the plate bottom grouting holes and the plate bottom grout outlet holes are through holes, and the bottom of the concrete plate body is provided with grouting diversion trenches communicated with the plate bottom grouting holes and the plate bottom grout outlet holes.
2. The precast concrete pavement slab of claim 1, wherein the rod member of the concrete slab side is a dowel.
3. The precast concrete pavement slab of claim 1, wherein the groove of the concrete slab side surface is an anchoring tongue groove; a mortise grouting hole and a mortise grout outlet are formed in the concrete plate body at positions corresponding to the anchoring mortise, and the mortise grouting hole and the mortise grout outlet are through holes; the top surface of each anchoring mortise is wider than the bottom surface.
4. The precast concrete pavement slab according to claim 1, wherein the precast concrete pavement slab is provided with a connection plate, the groove formed in the side surface of the concrete slab is a slab groove, and the top surface of the slab groove has an opening corresponding to the top surface of the concrete slab.
5. The precast concrete pavement slab of claim 4, wherein the slab groove has a depth and a width greater than those of the connection slab, and a length longer than those of the connection slab.
6. A construction method for rapidly repairing a pavement by applying the precast concrete pavement slab of claim 2, comprising the steps of:
step S1: in a factory, producing precast concrete pavement slabs according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement according to the size of the precast concrete pavement, and performing base layer repairing construction;
step S3: slotting the side surface of the removed original concrete pavement, wherein the number and the spacing of the slots are matched with the dowel bars of the precast concrete pavement slab, and the slots are wide at the lower part and narrow at the upper part;
step S4: laying a precast concrete pavement slab, placing a dowel bar in the groove, and adjusting the height;
step S5: selecting a variety of grouting materials according to the traffic recovery time requirement, and premixing the grouting materials;
step S6, grouting the grouting material into the slots and trowelling, grouting the grouting material through the grouting holes at the bottom of the plate by grouting equipment, and stopping when the grout is discharged from the grout outlet at the bottom of the plate;
step S7: filling grouting material at the lower part of a joint between the precast concrete pavement slab and the original concrete pavement, and plugging the upper part by using joint filling glue;
step S8: and after the grouting material is hardened, the joint filling glue is cured, and the construction is finished.
7. A construction method for rapidly repairing a pavement by using the precast concrete pavement slab of claim 3, comprising the steps of:
step S1: in a factory, producing precast concrete pavement slabs according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement according to the size of the precast concrete pavement, and performing base layer repairing construction;
step S3: embedding anchoring steel bars into the side surface of the removed original concrete pavement in a steel bar embedding mode, wherein the number and the spacing of the anchoring steel bars are matched with those of anchoring mortises of the precast concrete pavement;
step S4: laying a precast concrete pavement slab, placing the anchoring steel bars in the anchoring mortises, and adjusting the height;
step S5: selecting a variety of grouting materials according to the traffic recovery time requirement, and premixing the grouting materials;
step S6, grouting the grouting material through the mortise grouting hole by grouting equipment, and stopping when grout is discharged from the mortise grouting hole; grouting the grouting material through the plate bottom grouting hole by using grouting equipment, and stopping when the plate bottom grout outlet hole discharges grout;
step S7: filling grouting material at the lower part of a joint between the precast concrete pavement slab and the original concrete pavement, and plugging the upper part by using joint filling glue;
step S8: and after the grouting material is hardened, the joint filling glue is cured, and the construction is finished.
8. A construction method for rapidly repairing a pavement by using the precast concrete pavement slab of claim 4 or 5, comprising the steps of:
step S1: in a factory, producing precast concrete pavement slabs according to the specification and the quantity of design requirements;
step S2: in a construction site, removing the damaged original concrete pavement according to the size of the precast concrete pavement, and performing base layer repairing construction;
step S3: laying a precast concrete pavement slab and adjusting the height;
step S4: grooving the original concrete pavement at the position corresponding to the slab groove, wherein the length and the depth of the grooving are consistent with those of the slab groove;
step S5: connecting plates are arranged in the plate grooves and the cutting grooves;
step S6, filling grouting material or epoxy resin in the plate groove and the cutting groove and leveling;
step S7: filling grouting material at the lower part of a joint between the precast concrete pavement slab and the original concrete pavement, and plugging the upper part by using joint filling glue;
step S8: and after the grouting material is hardened, the joint filling glue is cured, and the construction is finished.
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Application publication date: 20220401 |