CN213267358U - Assembled highway that can splice and widen - Google Patents
Assembled highway that can splice and widen Download PDFInfo
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- CN213267358U CN213267358U CN202021913049.3U CN202021913049U CN213267358U CN 213267358 U CN213267358 U CN 213267358U CN 202021913049 U CN202021913049 U CN 202021913049U CN 213267358 U CN213267358 U CN 213267358U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model discloses an assembled highway capable of being spliced and widened, which comprises a basic roadbed, a basic pavement, a widened roadbed and a widened pavement, wherein the basic roadbed and the basic pavement are all PC prefabricated components; the cross section of the foundation subgrade is trapezoidal, the two slope sides of the foundation subgrade are of N-level step structures, the cross section of the foundation pavement is rectangular, the foundation pavement is assembled on the foundation subgrade, and after the foundation pavement and the foundation subgrade are assembled, the slope sides form N + 1-level step structures; the widened roadbed is assembled on the side slope of the foundation roadbed, and the widened pavement is assembled on the top surface of the widened roadbed and is flush with the top surface of the foundation pavement; the widened roadbed is formed by assembling a plurality of layers of prefabricated plates which are sequentially spliced from bottom to top, and after the inner sides of the prefabricated plates are spliced and assembled with the step-shaped structures, the outer sides of the widened roadbed form a side slope side structure which is the same as the foundation roadbed; and the top surface and the bottom surface of the adjacent precast slabs, the top surface of the widened roadbed and the bottom surface of the widened pavement are spliced, positioned and assembled through grooves and raised lines.
Description
Technical Field
The utility model belongs to the highway engineering field specifically is a can splice assembled highway of widening.
Background
The method is characterized in that a plurality of roads constructed in early stage of China have relatively serious traffic jam phenomena, the reconstruction and extension of the roads are effective ways for solving the traffic jam, but the consolidation settlement of a new roadbed and the difference of the new and old roads on the structural strength are widened, so that the stress at the splicing part of the roadbed and the road surface is extremely unfavorable, the stress strain distribution and the stability of a road surface structure are greatly influenced by the widening and the reconstruction, especially in the areas with soft soil or foundations with uneven hardness, after the old roads are reconstructed, extended and widened, the new and old roadbeds are unevenly settled before and after the widening due to the difference of soil property types, compaction degrees, consolidation settlement and the like of the new and old roadbeds, and then overlarge concentrated stress is generated in the road surface structure, and once the allowable strength of the road surface material is exceeded, the road surface can crack.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a construction photoperiod is short, can avoid the highway to widen the back appear the assembled highway of road surface fracture and settlement problem.
The utility model provides an assembled highway that can be spliced and widened, which comprises a basic roadbed, a basic pavement, a widened roadbed and a widened pavement, wherein the basic roadbed and the basic pavement are all PC prefabricated components; the cross section of the foundation subgrade is trapezoidal, the two slope sides of the foundation subgrade are of N-level step structures, the cross section of the foundation pavement is rectangular, the foundation pavement is assembled on the foundation subgrade, and after the foundation pavement and the foundation subgrade are assembled, the slope sides form N + 1-level step structures; the widened roadbed is assembled on the side slope of the foundation roadbed, and the widened pavement is assembled on the top surface of the widened roadbed and is flush with the top surface of the foundation pavement; the widened roadbed is formed by assembling a plurality of layers of prefabricated plates which are sequentially spliced from bottom to top, and after the inner sides of the prefabricated plates are spliced and assembled with the step-shaped structures, the outer sides of the widened roadbed form a side slope side structure which is the same as the foundation roadbed; and the top surface and the bottom surface of the adjacent precast slabs, the top surface of the widened roadbed and the bottom surface of the widened pavement are spliced, positioned and assembled through grooves and raised lines.
In one embodiment of the above technical scheme, the cross section of the foundation subgrade is in the shape of an isosceles trapezoid, and a groove for inserting the widened subgrade is formed in the middle of the horizontal plane of the stepped structures on the two sides.
In one embodiment of the above technical solution, the number of the prefabricated slabs is twice the number of steps on the side of the foundation bed slope, each step corresponds to two layers of prefabricated slabs, and the outer side of the top surface of each prefabricated slab has a structure identical to the horizontal plane of the step-shaped structure.
In one embodiment of the above technical scheme, the inner side of the bottom surface of the lowest layer of prefabricated slab is provided with a convex column matched with a groove on the horizontal plane of the slope-side stepped structure of the foundation subgrade, and the middle position of the top surface is provided with the convex column and grooves symmetrically arranged at two sides of the convex column; the top surface structures of the prefabricated plates of all layers are the same.
In one embodiment of the above technical solution, the widened pavement includes a lower prefabricated slab and an upper prefabricated slab, the bottom surface of the lower prefabricated slab is inserted and assembled with the horizontal plane of the stepped structure at the uppermost level of the foundation bed and the top surface of the prefabricated slab at the uppermost level of the widened foundation bed, the upper prefabricated slab is inserted and assembled with the lower prefabricated slab, and the top surface of the upper prefabricated slab is a plane.
In one embodiment of the above technical scheme, the device further comprises a side slope prefabricated block assembled at the step-shaped structure outside the widened roadbed and the widened pavement, and the bottom surface of the side slope prefabricated block is inserted and assembled with the horizontal surface of the step-shaped structure.
The utility model discloses a when the basis road bed is prefabricated, the mosaic structure of step type is reserved to its both sides slope side, and reserve the recess on the horizontal plane of step type structure, widen the road bed and assemble by the multilayer prefabricated plate and form, and peg graft through the concave-convex structure lock between the inboard of each layer prefabricated plate and the horizontal plane of basis road bed slope side step type structure, peg graft through the concave-convex structure lock between the prefabricated plate of adjacent layer, and widen the outside formation of road bed and the same step type structure of basis road bed, so can widen as required many times. Because the upper and lower structures of the widened roadbed are in staggered splicing connection, and the widened roadbed and the basic roadbed are in staggered splicing connection, the integrity of the basic roadbed and the widened roadbed is high, and the problems of pavement cracking and settlement after the road is widened can be avoided. In addition, the foundation roadbed, the foundation pavement, the widened roadbed and the widened pavement are all PC prefabricated components, centralized and efficient production is achieved in a factory, only assembly construction and compaction, drainage and other treatment are needed on site, and the construction period can be greatly shortened. The utility model discloses can be used for laying new highway, also can be used to widen old highway. When a new road is laid, only a basic roadbed and a basic road surface can be laid according to the width requirement of the road, the basic roadbed and a widened roadbed can be simultaneously laid, and the method can be determined according to the production equipment and the transportation size requirement of the prefabricated part. When widening old highway, can cut into the step type structure with the side slope side of old highway, produce supporting widening road bed and widening the road surface according to the size of step type structure, widening portion has high wholeness after assembling with old road bed.
Drawings
Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention.
Fig. 2 is a schematic half-width structure view of the foundation roadbed in fig. 1.
Fig. 3 to 6 are schematic sectional structures of four types of prefabricated panels of the embodiment a-d.
Fig. 7 is a schematic sectional view of the precast block.
Detailed Description
As shown in fig. 1, the splicing-widening fabricated highway disclosed by the present embodiment includes a foundation bed 1, a foundation pavement 2, a widening bed 3, and a widening pavement 4, which are all prefabricated components.
As can be seen from fig. 1 and 2:
the cross section of the foundation subgrade 1 is in the shape of an isosceles trapezoid, the two waist sides of the foundation subgrade are side slope sides, the side slope sides are of a multi-stage step structure, the three-stage step structure is shown in the figure, and a concave U-shaped groove is formed in the middle position of the horizontal plane of each stage of step.
The cross section of the basic pavement 2 is rectangular, the basic pavement is assembled on the top surface of the basic roadbed, the thickness of the basic pavement is the same as the height of the steps on the side slope of the basic roadbed 1, namely, the basic pavement and the basic roadbed are assembled to form a road with four steps on the side slope.
As can be seen from fig. 1 to 5, the widened roadbed 3 of the present embodiment is formed by inserting six layers of prefabricated slabs in a vertically staggered manner, the height of each layer of stepped structure corresponds to the splicing height of two layers of prefabricated slabs, the width of each layer of prefabricated slabs is the same, and the outer side of each layer of prefabricated slabs is of the same structure as the water level of the side slope of the foundation roadbed.
The cross section structure of the six-layer precast slab has three types:
the lowest class is class a shown in fig. 3, a convex column matched with a U-shaped groove on the horizontal plane of the step-shaped structure on the slope side of the foundation roadbed 1 is arranged on the lower side of the class a precast slab 31, the convex column and a groove are assembled in an inserted mode, and a middle convex column and grooves symmetrically arranged on two sides of the middle convex column are arranged on the upper side of the class a precast slab.
When the class a prefabricated slab is assembled with the foundation roadbed 1, the vertical surface of the inner side of the prefabricated slab is attached to the vertical surface of the first-stage stepped structure at the lowest part of the foundation roadbed, and the bottom surface of the prefabricated slab is inserted into the horizontal surface of the stepped structure.
The second layer of prefabricated slab is a b-type prefabricated slab 32 shown in fig. 4, the bottom surface of the b-type prefabricated slab is provided with a middle groove and convex columns symmetrically arranged on two sides of the middle groove, and the top surface of the b-type prefabricated slab is provided with a middle convex column and grooves symmetrically arranged on two sides of the middle convex column.
When the class b prefabricated plate is assembled with the class a prefabricated plate, the inner vertical surface of the class b prefabricated plate is attached to the vertical surface of the first-stage step-shaped structure, and the bottom surface of the class b prefabricated plate is inserted into the top surface of the class a prefabricated plate.
The third layer of prefabricated slab is a c-type prefabricated slab 33 shown in FIG. 5, the top surface structure of the c-type prefabricated slab is the same as that of the b-type prefabricated slab, and the inner side of the bottom surface is an insertion connection structure matched with the horizontal plane of the second-stage step-shaped structure and the inner side structure of the top surface of the b-type prefabricated slab.
The fourth layer of prefabricated panels and the sixth layer of prefabricated panels are the same as the second layer of prefabricated panels of the class b, and the fifth layer of prefabricated panels are the same as the third layer of prefabricated panels of the class c.
The number of the precast slabs of the widened roadbed of the highway with the other structures exceeding the four-level step type structure and the like.
After the widened roadbed is assembled, the top surface of the widened roadbed is provided with an inserting structure.
The widened pavement 4 is assembled by a lower prefabricated slab and an upper prefabricated slab 41, the lower prefabricated slab adopts a c-type prefabricated slab 33 shown in fig. 5 and is assembled with a sixth-layer prefabricated slab of the widened roadbed in an inserted connection mode. The bottom surface of the upper prefabricated slab is spliced and assembled with the lower prefabricated slab, and the top surface is a plane, as shown in fig. 6.
After the widened roadbed 3 and the widened pavement 4 are assembled with the foundation roadbed 1 and the foundation pavement 2, the side slope side forms a side slope side structure which is the same as the foundation roadbed.
The precast blocks 5 corresponding to the step-type structures are arranged at the side slopes of the highway, and the section shapes of the precast blocks are shown in figure 7, so that the service lives of the precast slabs of the widened roadbed are prolonged.
From the above-mentioned structure of this embodiment, the utility model discloses a when the basis road bed is prefabricated, the mosaic structure of step type is reserved to its both sides slope side, and reserve the recess on the horizontal plane of step type structure, widen the road bed and assemble by the multilayer prefabricated plate and form, and peg graft through the concave-convex structure lock between the inboard of each layer prefabricated plate and the horizontal plane of basis road bed slope side step type structure, peg graft through the concave-convex structure lock between the prefabricated plate of adjacent layer, and widen the outside formation of road bed and basic road bed the same step type structure, so can widen as required many times. Because the upper and lower structures of the widened roadbed are in staggered splicing connection, and the widened roadbed and the basic roadbed are in staggered splicing connection, the integrity of the basic roadbed and the widened roadbed is high, and the problems of pavement cracking and settlement after the road is widened can be avoided. In addition, the foundation roadbed, the foundation pavement, the widened roadbed and the widened pavement are all PC prefabricated components, centralized and efficient production is achieved in a factory, only assembly construction and compaction, drainage and other treatment are needed on site, and the construction period can be greatly shortened. The utility model discloses can be used for laying new highway, also can be used to widen old highway. When a new road is laid, only a basic roadbed and a basic road surface can be laid according to the width requirement of the road, the basic roadbed and a widened roadbed can be simultaneously laid, and the method can be determined according to the production equipment and the transportation size requirement of the prefabricated part. When widening old highway, can cut into the step type structure with the side slope side of old highway, produce supporting widening road bed and widening the road surface according to the size of step type structure, widening portion has high wholeness after assembling with old road bed.
Claims (6)
1. The utility model provides a can splice assembled highway that widens which characterized in that: the method comprises a basic roadbed, a basic pavement, a widened roadbed and a widened pavement which are all PC prefabricated components;
the cross section of the foundation subgrade is trapezoidal, the two slope sides of the foundation subgrade are of N-level step structures, the cross section of the foundation pavement is rectangular, the foundation pavement is assembled on the foundation subgrade, and after the foundation pavement and the foundation subgrade are assembled, the slope sides form N + 1-level step structures;
the widened roadbed is assembled on the side slope of the foundation roadbed, and the widened pavement is assembled on the top surface of the widened roadbed and is flush with the top surface of the foundation pavement;
the widened roadbed is formed by assembling a plurality of layers of prefabricated plates which are sequentially spliced from bottom to top, and after the inner sides of the prefabricated plates are spliced and assembled with the step-shaped structures, the outer sides of the widened roadbed form a side slope side structure which is the same as the foundation roadbed;
and the top surface and the bottom surface of the adjacent precast slabs, the top surface of the widened roadbed and the bottom surface of the widened pavement are spliced, positioned and assembled through grooves and raised lines.
2. The spliceable widened fabricated roadway of claim 1, wherein: the cross section of the foundation roadbed is in an isosceles trapezoid shape, and grooves for inserting the widened roadbed are formed in the middle positions of the horizontal planes of the step structures on the two sides.
3. The spliceable widened fabricated roadway of claim 2, wherein: the number of layers of the precast slabs is twice of the number of steps on the side of the foundation subgrade slope, each step corresponds to two layers of precast slabs, and the outer side of the top surface of each precast slab is of a structure the same as the horizontal plane of the step-shaped structure.
4. The spliceable widened fabricated roadway of claim 3, wherein: the inner side of the bottom surface of the lowest precast slab is provided with a convex column matched with a groove on the horizontal plane of the slope side step structure of the foundation subgrade, and the middle position of the top surface is provided with a convex column and grooves symmetrically arranged at two sides of the convex column; the top surface structures of the prefabricated plates of all layers are the same.
5. The spliceable widened fabricated roadway of claim 4, wherein: the widened pavement comprises lower prefabricated plates and upper prefabricated plates, the bottom surfaces of the lower prefabricated plates and the horizontal plane of the uppermost-stage stepped structure of the foundation roadbed and the top surfaces of the upper prefabricated plates of the widened roadbed are assembled in an inserted mode, the upper prefabricated plates and the lower prefabricated plates are assembled in an inserted mode, and the top surfaces of the upper prefabricated plates are planes.
6. The spliceable widened fabricated roadway of claim 5, wherein: the side slope prefabricated block is assembled at the step-shaped structure outside the widened roadbed and the widened pavement, and the bottom surface of the side slope prefabricated block is spliced and assembled with the horizontal plane of the step-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021913049.3U CN213267358U (en) | 2020-09-04 | 2020-09-04 | Assembled highway that can splice and widen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021913049.3U CN213267358U (en) | 2020-09-04 | 2020-09-04 | Assembled highway that can splice and widen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213267358U true CN213267358U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021913049.3U Active CN213267358U (en) | 2020-09-04 | 2020-09-04 | Assembled highway that can splice and widen |
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|---|---|
| CN (1) | CN213267358U (en) |
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2020
- 2020-09-04 CN CN202021913049.3U patent/CN213267358U/en active Active
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