CN110644323A - Pavement slab, pavement structure and construction method suitable for temporary road soft soil foundation - Google Patents
Pavement slab, pavement structure and construction method suitable for temporary road soft soil foundation Download PDFInfo
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- CN110644323A CN110644323A CN201910853727.7A CN201910853727A CN110644323A CN 110644323 A CN110644323 A CN 110644323A CN 201910853727 A CN201910853727 A CN 201910853727A CN 110644323 A CN110644323 A CN 110644323A
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- 239000002689 soil Substances 0.000 title claims abstract description 46
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 116
- 241001669679 Eleotris Species 0.000 claims abstract description 80
- 239000004576 sand Substances 0.000 claims description 21
- 239000004746 geotextile Substances 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 239000010426 asphalt Substances 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 210000002105 tongue Anatomy 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
- E01C9/08—Temporary pavings
- E01C9/086—Temporary pavings made of concrete, wood, bitumen, rubber or synthetic material or a combination thereof
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a pavement slab suitable for a temporary road soft soil foundation, which comprises: the prefabricated reinforced concrete plates are respectively provided with matched tongue-and-grooves at two transverse outer sides, a transverse joint seam is formed when two adjacent prefabricated reinforced concrete plates are transversely spliced, and a longitudinal joint seam is formed when two adjacent prefabricated reinforced concrete plates are longitudinally spliced; and the sleeper beam structure is arranged below the precast reinforced concrete slab pavement slab in a cushioning manner and comprises a first sleeper beam and a second sleeper beam. The invention also discloses a pavement structure suitable for the temporary road soft soil foundation and a pavement construction method suitable for the temporary road soft soil foundation. The invention is suitable for a soft soil foundation with a temporary road and poor foundation condition, improves the soil body support, avoids uneven settlement, greatly reduces vehicle bump, increases the driving comfort and reduces the impact on the road surface by the prefabricated reinforced concrete slab and sleeper beam structure, thereby being more beneficial to reducing damage.
Description
Technical Field
The invention relates to the field of road engineering. More particularly, the present invention relates to a pavement slab, a pavement structure and a construction method suitable for a temporary soft soil foundation of a road.
Background
In road construction and building construction, temporary construction roads are often required to be paved, the conventional temporary road is basically a cast-in-place reinforced concrete pavement system, the temporary road needs to be broken and dismantled after construction is finished, the temporary road is even difficult to dismantle under certain conditions, a large amount of manpower and material resources are wasted in the dismantling process, a large amount of construction waste is generated, the environment is harmed, the field construction speed is accelerated, the temporary pavement investment and the later-stage dismantling engineering amount are reduced as much as possible, the development idea of green and environment protection is reflected, and a prefabricated concrete pavement is often required to be used as a temporary pavement in the construction period.
The assembly type precast concrete pavement slab adopted at present comprises a prestressed concrete pavement slab, a common reinforced concrete pavement slab and the like according to different materials, but the materials are not effectively connected, so that the phenomenon of vehicle jumping is easily caused by uneven settlement, staggered joints and the like, in order to solve the uneven settlement between the slabs, people adopt connecting pieces for connection between the assembly type precast concrete pavement slabs, such as bolt connection, pull rod connection and the like, so that the problem of road surface bearing and the even settlement of the pavement slab under good geological conditions can be effectively solved, but the uneven settlement and deformation on a soft foundation can not be effectively solved.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
It is still another object of the present invention to provide a pavement slab, a pavement structure and a construction method suitable for a temporary road soft soil foundation, which are suitable for a temporary road soft soil foundation with a bad foundation condition, and which improve the soil body support, avoid uneven settlement, greatly reduce vehicle jolts, increase the driving comfort, reduce the impact on the pavement, and further facilitate the reduction of damages by prefabricating a reinforced concrete slab and a sleeper beam structure.
To achieve these objects and other advantages in accordance with the present invention, there is provided a pavement slab for a soft soil foundation for a temporary road, including:
the prefabricated reinforced concrete slab comprises prefabricated reinforced concrete slabs, a plurality of prefabricated reinforced concrete slabs and a plurality of prefabricated reinforced concrete slab sections, wherein matched tongue-and-grooves are respectively arranged on two transverse outer sides of each prefabricated reinforced concrete slab, the prefabricated reinforced concrete slabs are transversely and sequentially spliced to form prefabricated reinforced concrete slab sections, and the prefabricated reinforced concrete slab sections are longitudinally and sequentially spliced to form a prefabricated reinforced concrete slab road panel, wherein when two adjacent prefabricated reinforced concrete slabs are transversely spliced, an interface joint with the transverse width of 1-2cm is formed, and when two adjacent prefabricated reinforced concrete slabs are longitudinally spliced, an interface joint with the longitudinal length of 1-2cm is formed;
the sleeper beam structure is arranged below the prefabricated reinforced concrete slab pavement slab in a cushioning mode and comprises a first sleeper beam and a second sleeper beam, the first sleeper beam forms an L-shaped pedestal to cushion the prefabricated reinforced concrete slab sections on the outermost side in the longitudinal direction, and the second sleeper beam is arranged at the splicing position of two longitudinally adjacent prefabricated reinforced concrete slab sections in a cushioning mode.
Preferably, the ratio of the longitudinal length to the transverse width of the prefabricated reinforced concrete slab is 2-3:1, and the thickness of the prefabricated reinforced concrete slab is 20-30 cm.
Preferably, the first sleeper beam and the second sleeper beam are equal in transverse width, and the ratio of the transverse width to the transverse width of the prefabricated reinforced concrete slab is 2-3: 1.
Preferably, the thicknesses of the pedestal of the first sleeper beam and the second sleeper beam are both 20-30cm, the ratio of the longitudinal lengths of the bottom and the top of the first sleeper beam is 2-3:1, and the longitudinal length of the bottom of the first sleeper beam is more than or equal to 2, and the thickness of the prefabricated reinforced concrete plate is +1 cm.
Preferably, a felt is disposed at a contact surface of the precast reinforced concrete slab section and the sleeper beam structure.
Road surface structure suitable for interim road soft soil foundation includes the rubble bed course of laying, geotechnological cloth, the sand cushion layer and the pavement slab suitable for interim road soft soil foundation of laying in proper order from bottom to top.
Preferably, the thickness of the gravel cushion layer is 30cm, and the laying density of the geotextile is 200g/m2The thickness of the sand cushion layer is 20 cm.
The pavement construction method suitable for the temporary road soft soil foundation comprises the following steps:
1) paving a broken stone cushion layer, geotextile and a sand cushion layer from bottom to top in sequence;
2) after the middle piles are positioned on the route, the sleeper beam structure is paved on site, a sand cushion layer is adopted for leveling, the sand cushion layer, the pedestal of the first sleeper beam and the second sleeper beam are leveled to form a supporting surface at the same height, and asphalt felt is paved on the sleeper beam structure;
3) prefabricating the prefabricated reinforced concrete slab in a prefabricating field, presetting hoisting holes during manufacturing, and hoisting the prefabricated reinforced concrete slab in place by using a crane;
4) and paving the prefabricated reinforced concrete plates on the supporting surface, forming an interface joint with the transverse width of 1-2cm when two adjacent prefabricated reinforced concrete plates are transversely spliced, forming an interface joint with the longitudinal length of 1-2cm when two adjacent prefabricated reinforced concrete plates are longitudinally spliced, filling asphalt into the interface joint, and leveling.
Preferably, in the step 4), when the prefabricated reinforced concrete slab is laid on the supporting surface, firstly, the prefabricated reinforced concrete slab sections are transversely and sequentially spliced to form one prefabricated reinforced concrete slab section, and then, the next prefabricated reinforced concrete slab section is longitudinally and sequentially constructed, or, firstly, the prefabricated reinforced concrete slab sections are longitudinally and sequentially spliced, a lane unit in the driving direction is formed by a plurality of prefabricated reinforced concrete slabs, and then, the next lane unit is transversely and sequentially constructed.
Preferably, in the step 2), when the sleeper beam structure is laid on site, a sleeper beam template is laid, reinforcing steel bars are bound, concrete is poured, and the sleeper beam structure is formed after the concrete reaches the designed strength.
The invention at least comprises the following beneficial effects:
firstly, longitudinally arranging an interface seam and a sleeper beam structure below the prefabricated reinforced concrete plates, limiting the prefabricated reinforced concrete plates to move in the transverse direction and dispersing the stress on the end parts of the plates, avoiding the crushing damage of local soil bodies and uniformly diffusing the stress of the plate bottoms to a sand cushion layer; the expansion of uneven drop between the adjacent prefabricated reinforced concrete plates is limited, and the effective connection of the structure is kept, so that the driving comfort is ensured; if the sleeper beams sink, soil on two sides is extruded, at the moment, the slab and the sleeper beams on two sides form a three-dimensional compression system for the soil under the precast slab, and sandy soil under the slab is compacted, so that the support of the soil to the slab can be improved;
secondly, zigzag joint seams are transversely arranged below the prefabricated reinforced concrete plates to form a similar hinged structure system, so that the load can be dispersed; the method is beneficial to forming a smooth transition structure between the prefabricated reinforced concrete plates and relieving the stress of corners, thereby reducing the breakage rate and prolonging the service life; secondly, the damping can be buffered, the vehicle jolts can be greatly reduced, the driving comfort can be improved, the impact on the road surface can be reduced, and the damage can be reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a top view of one embodiment of the present invention;
FIG. 3 is a schematic structural view of a transverse seam according to the present invention;
FIG. 4 is a schematic structural view of a prefabricated reinforced concrete panel of the present invention;
FIG. 5 is a schematic structural view of the bolster structure of the present invention;
fig. 6 is a schematic structural view of the pavement structure of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and 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 invention.
As shown in fig. 1 to 5, the present invention provides a pavement slab suitable for a temporary soft soil foundation of a road, comprising:
the prefabricated reinforced concrete slab 1 is prefabricated in a prefabricated field, two layers of reinforcing steel bars are distributed in a criss-cross mode in the prefabricated field, matched grooves and tongues are respectively arranged on two transverse outer sides of the prefabricated reinforced concrete slab, grooves are formed in one side of the prefabricated reinforced concrete slab, tenons are arranged on the other side of the prefabricated reinforced concrete slab, reinforcing steel bars are bent up at the grooves and tongues according to the corresponding groove shapes and are not prone to tilt up after splicing, a plurality of prefabricated reinforced concrete slabs 1 are transversely and sequentially spliced to form prefabricated reinforced concrete slab 1 sections, the number of the prefabricated reinforced concrete slabs 1 depends on the width of a road surface and the size of the prefabricated reinforced concrete slabs 1, the transverse width of the prefabricated reinforced concrete slabs 1 is generally the width of 1 lane, the plurality of prefabricated reinforced concrete slab 1 sections are longitudinally and sequentially spliced to form prefabricated reinforced concrete slab 1 road panels, wherein when two adjacent prefabricated reinforced concrete slabs 1 are transversely spliced, when the tenon of one prefabricated reinforced concrete plate 1 is inserted into the groove of another adjacent prefabricated reinforced concrete plate 1, an interface joint 5 with an upward opening is still formed, so that the cracking of a road is prevented, and when two adjacent prefabricated reinforced concrete plates 1 are longitudinally spliced, a certain interval is formed to form an interface joint 6 with the longitudinal length of 1-2cm, so that the expansion caused by heat and the contraction caused by cold are prevented;
the sleeper beam structure plays a role in supporting and stress transferring, and is arranged below a pavement slab of the prefabricated reinforced concrete slab 1 in a cushioning mode, and the sleeper beam structure comprises a first sleeper beam 2 and a second sleeper beam 3, as shown in fig. 5, the section of the first sleeper beam 2 is L-shaped, the horizontal part of the first sleeper beam is as thick as the second sleeper beam 3, the vertical part of the first sleeper beam forms a limit structure on the longitudinal outer side of the prefabricated reinforced concrete slab 1, the first sleeper beam 2 forms an L-shaped pedestal for cushioning the prefabricated reinforced concrete slab 1 section on the longitudinal outermost side, the second sleeper beam 3 is arranged at the splicing position of two longitudinally adjacent prefabricated reinforced concrete slab 1 sections, and the arrangement mode of the first sleeper beam 2m and the second sleeper beam 3n can be understood as m, n, n, n, … n, n and m.
In the technical scheme, the joint seams 6 and the sleeper beam structure are longitudinally arranged below the prefabricated reinforced concrete plates 1, so that the prefabricated reinforced concrete plates 1 are limited to move in the transverse direction, the stress on the end parts of the prefabricated reinforced concrete plates is dispersed, the crushing and the damage of local soil bodies are avoided, and the stress of the bottom of the prefabricated reinforced concrete plates is uniformly diffused to the sand cushion; the expansion of uneven drop between the adjacent prefabricated reinforced concrete plates 1 is limited, and the effective connection of the structure is kept, so that the driving comfort is ensured; if the sleeper beams sink, soil on two sides is extruded, at the moment, the slab and the sleeper beams on two sides form a three-dimensional compression system for the soil under the precast slab, and sandy soil under the slab is compacted, so that the support of the soil to the slab can be improved; the zigzag joint seams 5 are transversely arranged below the prefabricated reinforced concrete plates 1 to form a similar hinged structure system, so that the load can be dispersed; and is beneficial to forming a smooth transition structure between the prefabricated reinforced concrete plates 1 and relieving the stress of corners, thereby reducing the breakage rate and prolonging the service life; secondly, the damping can be buffered, the vehicle jolts can be greatly reduced, the driving comfort can be improved, the impact on the road surface can be reduced, and the damage can be reduced.
In another technical scheme, the ratio of the longitudinal length to the transverse width of the prefabricated reinforced concrete slab 1 is 2-3:1, and the thickness of the prefabricated reinforced concrete slab 1 is 20-30 cm. The stress way of the dimension plate is clear, and the economic dimension of the dimension plate meets the stress performance.
In another technical scheme, the first sleeper beam 2 and the second sleeper beam 3 are equal in transverse width, and the ratio of the transverse width to the transverse width of the prefabricated reinforced concrete slab 1 is 2-3: 1. The sleeper beam and the precast slab are transversely arranged in a staggered manner, and the economic size of the sleeper beam is met on the premise of basic use functions.
In another technical scheme, the thicknesses of the pedestal of the first sleeper beam 2 and the second sleeper beam 3 are both 20-30cm, the ratio of the longitudinal lengths of the bottom and the top of the first sleeper beam 2 is 2-3:1, and the longitudinal length of the bottom of the first sleeper beam 2 is more than or equal to 2 and the thickness of the prefabricated reinforced concrete slab 1 is +1 cm. The size of the sleeper beam member is set to improve the economy of the sleeper beam member on the premise of meeting the basic use functions of the sleeper beam (limiting the lateral displacement of the plate, dispersing the stress of the end part of the plate and keeping the integral stress performance of the structure).
In another technical scheme, a felt 7 is arranged at the contact surface of the prefabricated reinforced concrete slab 1 section and the sleeper beam structure. Play waterproof effect to and the effect of temporary support, avoid the positioning deviation that the contact surface unsmooth caused because of prefabricated uncertain factor leads to.
The pavement structure suitable for the temporary road soft soil foundation comprises a paved broken stone cushion layer, geotextile and a sand cushion layer which are sequentially paved from bottom to top and a pavement slab suitable for the temporary road soft soil foundation, as shown in figure 6. The pavement structure can be applied to soft soil foundations with poor foundation conditions, and uneven settlement and deformation of the soft foundations can be avoided through simple treatment.
In another technical scheme, the thickness of the gravel cushion layer, the laying density of the geotextile and the thickness of the sand cushion layer are conventionally set according to the standard of the design specification of the cement concrete pavement for roads, and the gravel cushion layerHas a thickness of 30cm and a laying density of 200g/m2The thickness of the sand cushion layer is 20cm, and the sand cushion layer can be adjusted according to the actual condition of the soft soil foundation.
The pavement construction method suitable for the temporary road soft soil foundation comprises the following steps:
1) paving a gravel cushion layer, geotextile and a sand cushion layer in sequence from bottom to top, wherein the optimized size specification of each layer of structure is that the thickness of the gravel cushion layer is 30cm, and the paving density of the geotextile is 200g/m2The thickness of the sand cushion layer is 20 cm;
2) after the middle piles are positioned on the route, the sleeper beam structure is paved on site, the sleeper beam structure can be poured on site or paved on site after being prefabricated in a precast yard, a sand cushion layer is adopted for leveling, the sand cushion layer, a pedestal of the first sleeper beam 2 and the second sleeper beam 3 are leveled to form a supporting surface at the same height, and an asphalt felt 7 is paved on the sleeper beam structure;
3) prefabricating the prefabricated reinforced concrete plate 1 in a prefabrication field, wherein hoisting holes 4 are preset during manufacturing, so that the plate is convenient to hoist and place, when the prefabricated reinforced concrete plate 1 is prefabricated, the transverse edge of the prefabricated reinforced concrete plate adopts zigzag inter-plate seams to form a similar hinged structural system, and the prefabricated reinforced concrete plate 1 is hoisted in place by a crane;
4) the prefabricated reinforced concrete slabs 1 are laid on the supporting surface (above the asphalt felt 7), when two adjacent prefabricated reinforced concrete slabs 1 are transversely spliced, an interface joint 5 with the transverse width of 1-2cm is formed, when two adjacent prefabricated reinforced concrete slabs 1 are longitudinally spliced, an interface joint 6 with the longitudinal length of 1-2cm is formed, asphalt is filled into the transverse and longitudinal interface joints, a structural system similar to a hinge is transversely formed, a flexible butt joint structure is longitudinally formed, and the prefabricated reinforced concrete slabs are leveled.
In the technical scheme, the problems that when the prefabricated slab is directly laid on a soft soil foundation, the corners of the slab are unevenly settled, and a pit groove is formed in a soil body, so that the lower part of the slab is empty, and the soil body is extruded towards two sides due to the integral sinking of the slab can be solved; and the problems that the plates are connected by bolts, more embedded parts are arranged when the pull rods are connected and prefabricated, and the construction process is complex are solved. The construction method has the advantages of small work load for removing the asphalt, low construction difficulty, environmental friendliness, reduction in construction cost, strong practicability and high construction efficiency.
In another technical scheme, in the step 4), when the prefabricated reinforced concrete plates 1 are laid on the supporting surface, firstly, the prefabricated reinforced concrete plates 1 are transversely and sequentially spliced to form one prefabricated reinforced concrete plate 1 section, and then, the next prefabricated reinforced concrete plate 1 section is longitudinally and sequentially constructed, or, firstly, the prefabricated reinforced concrete plates 1 are longitudinally and sequentially spliced to form one lane unit in the driving direction, and then, the next lane unit is transversely and sequentially constructed. The method can be used for firstly carrying out transverse construction and then carrying out longitudinal construction, and can also be used for firstly carrying out longitudinal construction and then carrying out transverse construction, and is suitable for different road systems, such as two-way two-lane or four-lane and the like.
In another technical scheme, in the step 2), when the sleeper beam structure is laid on site, a sleeper beam template is laid, reinforcing steel bars are bound, concrete is poured, and the sleeper beam structure is formed after the concrete reaches the designed strength. The method has better soft soil foundation adaptability and is matched with a sleeper beam structure and a sand cushion layer.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. Pavement slab suitable for interim road soft soil foundation, its characterized in that includes:
the prefabricated reinforced concrete slab comprises prefabricated reinforced concrete slabs, a plurality of prefabricated reinforced concrete slabs and a plurality of prefabricated reinforced concrete slab sections, wherein matched tongue-and-grooves are respectively arranged on two transverse outer sides of each prefabricated reinforced concrete slab, the prefabricated reinforced concrete slabs are transversely and sequentially spliced to form prefabricated reinforced concrete slab sections, and the prefabricated reinforced concrete slab sections are longitudinally and sequentially spliced to form a prefabricated reinforced concrete slab road panel, wherein when two adjacent prefabricated reinforced concrete slabs are transversely spliced, an interface joint with the transverse width of 1-2cm is formed, and when two adjacent prefabricated reinforced concrete slabs are longitudinally spliced, an interface joint with the longitudinal length of 1-2cm is formed;
the sleeper beam structure is arranged below the prefabricated reinforced concrete slab pavement slab in a cushioning mode and comprises a first sleeper beam and a second sleeper beam, the first sleeper beam forms an L-shaped pedestal to cushion the prefabricated reinforced concrete slab sections on the outermost side in the longitudinal direction, and the second sleeper beam is arranged at the splicing position of two longitudinally adjacent prefabricated reinforced concrete slab sections in a cushioning mode.
2. A pavement slab suitable for a temporary road soft soil foundation as claimed in claim 1, wherein the ratio of the longitudinal length to the transverse width of the prefabricated reinforced concrete slab is 2-3:1, and the thickness of the prefabricated reinforced concrete slab is 20-30 cm.
3. A pavement slab adapted for use on temporary road soft soil foundations as claimed in claim 1, wherein said first and second sleepers are of equal lateral width and the ratio of the lateral width to the lateral width of said prefabricated reinforced concrete slab is 2-3: 1.
4. The pavement slab applicable to temporary road soft soil foundations as claimed in claim 1, wherein the thicknesses of the pedestal of the first sleeper beam and the second sleeper beam are both 20-30cm, the ratio of the longitudinal lengths of the bottom and the top of the first sleeper beam is 2-3:1, and the longitudinal length of the bottom of the first sleeper beam is more than or equal to 2 +1cm of the thickness of the prefabricated reinforced concrete slab.
5. A pavement slab suitable for use on temporary road soft soil foundations as claimed in claim 1, wherein a felt is provided at the interface of the prefabricated reinforced concrete slab section and the sleeper beam structure.
6. The pavement structure suitable for the temporary road soft soil foundation is characterized by comprising a paved broken stone cushion layer, a geotextile, a sand cushion layer and the pavement slab suitable for the temporary road soft soil foundation, which are paved in sequence from bottom to top, according to any one of claims 1 to 5.
7. A pavement structure suitable for a temporary road soft soil foundation as claimed in claim 6, wherein the thickness of the crushed stone cushion layer is 30cm, and the laying density of the geotextile is 200g/m2The thickness of the sand cushion layer is 20 cm.
8. The pavement construction method suitable for the temporary road soft soil foundation is characterized by comprising the following steps of:
1) paving a broken stone cushion layer, geotextile and a sand cushion layer from bottom to top in sequence;
2) after the middle piles are positioned on the route, paving the sleeper beam structure of any one of claims 1-5 on site, leveling by using a sand cushion layer, enabling the sand cushion layer, the pedestal of the first sleeper beam and the second sleeper beam to be flush, forming a supporting surface at the same height, and paving an asphalt felt on the sleeper beam structure;
3) prefabricating the prefabricated reinforced concrete slab as claimed in any one of claims 1 to 5 in a prefabrication field, presetting hoisting holes during manufacturing, and hoisting the prefabricated reinforced concrete slab in place by using a crane;
4) and paving the prefabricated reinforced concrete plates on the supporting surface, forming an interface joint with the transverse width of 1-2cm when two adjacent prefabricated reinforced concrete plates are transversely spliced, forming an interface joint with the longitudinal length of 1-2cm when two adjacent prefabricated reinforced concrete plates are longitudinally spliced, filling asphalt into the interface joint, and leveling.
9. A pavement construction method suitable for a temporary road soft soil foundation as claimed in claim 8, wherein in step 4), when the prefabricated reinforced concrete slab is laid on the supporting surface, one prefabricated reinforced concrete slab section is formed by transversely and sequentially splicing, and then the next prefabricated reinforced concrete slab section is longitudinally and sequentially constructed, or one lane unit in the driving direction is formed by longitudinally and sequentially splicing a plurality of prefabricated reinforced concrete slabs, and then the next lane unit is transversely and sequentially constructed.
10. A pavement construction method suitable for a temporary road soft soil foundation as claimed in claim 8, wherein in step 2), when the sleeper beam structure is laid on site, sleeper beam templates are laid, reinforcing steel bars are bound, concrete is poured, and the sleeper beam structure is formed after the concrete reaches the designed strength.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112342857A (en) * | 2020-10-27 | 2021-02-09 | 东南大学 | Permafrost region precast hollow slab base pavement structure capable of accelerating construction speed |
| CN112726315A (en) * | 2020-12-26 | 2021-04-30 | 中冶天工集团有限公司 | Socket joint formula concrete road module |
| CN112853845A (en) * | 2021-03-12 | 2021-05-28 | 兰州有色冶金设计研究院有限公司 | Nail hole type flexible pavement structure for treating unstable road subsidence and construction method thereof |
| CN113584972A (en) * | 2021-08-02 | 2021-11-02 | 甘肃省交通科学研究院集团有限公司 | Be suitable for regional assembled concrete pavement structure that permeates water of dividing |
| CN114032724A (en) * | 2021-09-18 | 2022-02-11 | 同济大学 | Assembled recycled concrete rural pavement |
| CN115012269A (en) * | 2022-04-19 | 2022-09-06 | 中工武大设计集团有限公司 | Prefabricated assembled cement concrete pavement and construction method thereof |
| CN115652711A (en) * | 2022-10-13 | 2023-01-31 | 广东一新长城建筑集团有限公司 | Prefabricated assembly type waterlogging-prevention drainage municipal road construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112342857A (en) * | 2020-10-27 | 2021-02-09 | 东南大学 | Permafrost region precast hollow slab base pavement structure capable of accelerating construction speed |
| CN112726315A (en) * | 2020-12-26 | 2021-04-30 | 中冶天工集团有限公司 | Socket joint formula concrete road module |
| CN112853845A (en) * | 2021-03-12 | 2021-05-28 | 兰州有色冶金设计研究院有限公司 | Nail hole type flexible pavement structure for treating unstable road subsidence and construction method thereof |
| CN113584972A (en) * | 2021-08-02 | 2021-11-02 | 甘肃省交通科学研究院集团有限公司 | Be suitable for regional assembled concrete pavement structure that permeates water of dividing |
| CN114032724A (en) * | 2021-09-18 | 2022-02-11 | 同济大学 | Assembled recycled concrete rural pavement |
| CN115012269A (en) * | 2022-04-19 | 2022-09-06 | 中工武大设计集团有限公司 | Prefabricated assembled cement concrete pavement and construction method thereof |
| CN115652711A (en) * | 2022-10-13 | 2023-01-31 | 广东一新长城建筑集团有限公司 | Prefabricated assembly type waterlogging-prevention drainage municipal road construction method |
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