Prefabricated road with double-rib beam and slab structure

Abstract

The utility model provides a prefabricated double-rib beam and slab structure assembly road which comprises a roadbed layer, a middle beam is arranged in the middle of the roadbed layer, side beams are arranged on the two sides of the roadbed layer, and a plurality of bolts are arranged at the tops of the middle beam and the side beams. According to the fabricated road with the prefabricated double-rib beam and slab structure, the roadbed layer, the side edge beams, the middle beam, the fine aggregate concrete grouting layer, the double-rib beam integrated slab, the asphalt concrete surface layer and other structures are matched with one another, and before construction, the side edge beams, the middle beam and the double-rib beam integrated slab are prefabricated in a PC prefabrication factory; in this way, a plurality of links such as cast-in-place and maintenance are reduced, the fabricated road can be opened to run after being installed and formed, the construction period is greatly shortened, prefabricated parts of the fabricated road can be produced on a large scale in a factory, the production cost is reduced, meanwhile, the fabricated road construction process is relatively simple, and the construction cost is reduced. The waste of manpower and materials is reduced, and the construction cost is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled roads, in particular to a precast double-ribbed beam slab structure assembled road. Background Art

[0002] "Road" refers to highways, urban roads and places that are within the jurisdiction of a unit but allow social motor vehicles to pass through, including squares, public parking lots and other places for public passage.

[0003] With the rapid development of modern engineering construction, higher requirements are put forward for aspects such as the efficiency, quality and sustainability of road construction. Traditional road construction methods have many limitations, such as long construction periods, complex on-site working environments, and large resource waste.

[0004] Regarding problems such as long construction periods, long curing times, short structural lifetimes, difficult maintenance and economy of traditional cast-in-situ structures, a series of new structures, new processes and new methods are gradually to be formed in the key technologies of assembled roads to accelerate the high-quality development of the application of complete sets of assembled road technologies in China. The present utility model discloses a precast double-ribbed beam slab structure unbonded prestressed assembled road structure, aiming to establish a new structural design and a new industrialized construction mode for assembled road construction, innovate the structural design, and further optimize the process method for the reference of the industry, so as to jointly promote the high-quality development of China's building industrialization. Content of the Utility Model

[0005] The utility model provides a precast double-ribbed beam slab structure assembled road, which solves the problems of long construction period, complex on-site working environment and large resource waste.

[0006] To solve the above technical problems, a precast double-ribbed beam slab structure assembled road provided by the utility model includes:

[0007] A road base layer, in the middle of which there is an intermediate beam, and on both sides of which there are side beams. A plurality of bolts are arranged on the tops of the intermediate beam and the side beams. A second cushion layer and a fine aggregate concrete grouting layer are respectively arranged in the middle of the intermediate beam and the side beams;

[0008] A plurality of double-ribbed beam integrated slabs, which are respectively arranged on the tops of the intermediate beam and the side beams;

[0009] An asphalt concrete surface layer, which is arranged on the tops of the plurality of double-ribbed beam integrated slabs.

[0010] Preferably, first cushion layers are arranged at the bottoms of the intermediate beam and the side beams. The second cushion layer is arranged on the top of the road base layer, and the second cushion layer is arranged at the bottom of the fine aggregate concrete grouting layer.

[0011] Preferably, a plurality of bolt reserved holes are formed inside the double-ribbed beam integrated plates, the bolts are arranged on the inner side surfaces of the bolt reserved holes, nuts are threadedly connected to the outer side surfaces of the bolts, and the nuts are arranged on the tops of the double-ribbed beam integrated plates.

[0012] Preferably, grouting holes and slurry outlet holes are respectively formed in the tops of the double-ribbed beam integrated plates, and the bottoms of the grouting holes and the slurry outlet holes extend to the bottoms of the double-ribbed beam integrated plates.

[0013] Preferably, the thicknesses of the first cushion layer and the second cushion layer are both 60 mm, and the gap between adjacent double-ribbed beam integrated plates is 10 mm.

[0014] Preferably, a plurality of reserved holes are formed inside the double-ribbed beam integrated plates.

[0015] Preferably, prestressed tendons are arranged inside the plurality of reserved holes.

[0016] Compared with the related art, a precast double-ribbed beam plate structure assembled road provided by the present utility model has the following beneficial effects:

[0017] The present utility model provides a precast double-ribbed beam plate structure assembled road. Through the cooperation of structures such as a road base course, side beams, intermediate beams, fine aggregate concrete grouting layer, double-ribbed beam integrated plates, and asphalt concrete surface layer, before construction, the side beams, intermediate beams, and double-ribbed beam integrated plates are precast in a PC precast factory and then transported to the site for assembly. In this way, multiple links such as in-situ casting and curing are reduced. After installation and forming, the road can be opened to traffic, greatly shortening the construction period. Moreover, the precast components of the assembled road can be mass-produced in the factory, reducing the production cost. At the same time, the construction process of the assembled road is relatively simple, reducing the waste of labor and materials and also reducing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a first embodiment of a precast double-ribbed beam plate structure assembled road provided by the present utility model;

[0019] Figure 2 is Figure 1 a schematic structural diagram of the double-ribbed beam integrated plate shown;

[0020] Figure 3 is Figure 2 a schematic side sectional structural diagram of the double-ribbed beam integrated plate shown;

[0021] Figure 4 is a schematic structural diagram of a second embodiment of a precast double-ribbed beam plate structure assembled road provided by the present utility model;

[0022] Figure 5 For Figure 4 the side sectional structure schematic diagram of the double-ribbed beam integrated slab shown in the figure.

[0023] Reference numerals in the figure: 1, road base course; 11, side beam; 12, middle beam; 13, first cushion layer; 14, second cushion layer; 15, fine aggregate concrete grouting layer; 16, bolt; 17, nut; 2, double-ribbed beam integrated slab; 21, grouting hole; 22, slurry outlet hole; 23, bolt reserved hole; 24, asphalt concrete surface course; 3, prestressed tendon; 31, reserved hole. Specific embodiments

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. Embodiment

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , wherein Figure 1 is the structural schematic diagram of the first embodiment of a precast double-ribbed slab structure assembled road provided by the present utility model; Figure 2 For Figure 1 the structural schematic diagram of the double-ribbed beam integrated slab shown in the figure; Figure 3 For Figure 2 the side sectional structure schematic diagram of the double-ribbed beam integrated slab shown in the figure. A precast double-ribbed slab structure assembled road includes: a road base course 1, with a middle beam 12 and side beams 11 buried respectively in the middle and on both sides of the road base course 1. When pouring the middle beam 12 and the side beams 11, a plurality of bolts 16 are pre-buried at their tops. A second cushion layer 14 and a fine aggregate concrete grouting layer 15 are respectively arranged in the middle of the middle beam 12 and the side beams 11;

[0026] A plurality of double-ribbed beam integrated slabs 2 are arranged on the tops of the middle beam 12 and the side beams 11;

[0027] An asphalt concrete surface course 24 is paved on the tops of the plurality of double-ribbed beam integrated slabs 2.

[0028] The middle beam 12 and the side beams 11 are connected and fixed to the double-ribbed beam integrated slab 2 through the pre-buried bolts 16. During on-site construction, the fine aggregate concrete grouting layer 15 is poured into the cavity between the double-ribbed beam integrated slab 2 and the second cushion layer 14 through the grouting holes 21. The fine aggregate concrete grouting layer 15 is a slightly expanding, low-shrinking, high-strength fine aggregate concrete grouting material. After all the construction processes are completed, the asphalt concrete surface course 24 is integrally paved above the structure;

[0029] The designed widths of the double-ribbed beam integrated slab 2 are 1000mm, 1200mm, 1400mm, 1600mm, 1800mm, and 2000mm, and its design modulus is 200mm. The designed lengths of the double-ribbed beam integrated slab 2 are 1600mm, 2000mm, 2400mm, and 2800mm, and its design modulus is 400mm, which is determined according to the design of specific engineering projects. To address the deformation problem of the assembled road after traffic, a 10mm gap is left between the double-ribbed beam integrated slabs 2 paved on-site, and the gap is filled with asphalt concrete surface layer glue.

[0030] First cushions 13 are provided at the bottoms of both the middle beam 12 and the side beam 11. The second cushion 14 is arranged on the top of the road base layer 1, and the second cushion 14 is arranged at the bottom of the fine aggregate concrete grouting layer 15.

[0031] The fine aggregate concrete grouting layer 15 is arranged at the 1 / 2 - 1 / 3 height of the middle beam 12 and the side beam 11. The designed width of the cross-section of the side beam 11 is 200mm - 400mm. The cross-section width of the middle beam is twice that of the side roadbed beam 1, and the heights are all 300mm - 500mm.

[0032] A plurality of bolt reserved holes 23 are opened inside multiple double-ribbed beam integrated slabs 2. During installation, the bolt 16 is passed through the inner side of the bolt reserved hole 23, and then the nut 17 is threadedly connected to the outer side of the bolt 16, and the nut 17 is located at the top of the double-ribbed beam integrated slab 2.

[0033] A grouting hole 21 and the slurry outlet hole 22 are respectively opened at the top of the double-ribbed beam integrated slab 2. The bottoms of the grouting hole 21 and the slurry outlet hole 22 both extend to the bottom of the double-ribbed beam integrated slab 2.

[0034] The hole diameters of the grouting hole 21 and the slurry outlet hole 22 are 40mm. A set of grouting hole 21 and slurry outlet hole 22 are provided on each double-ribbed beam integrated slab 2. The grouting hole 21 and the slurry outlet hole 22 are symmetrically arranged 200mm away from the short side of the double-ribbed beam integrated slab 2 or arranged diagonally.

[0035] The thicknesses of both the first cushion 13 and the second cushion 14 are 60mm, and the gap between adjacent double-ribbed beam integrated slabs 2 is 10mm.

[0036] Both the first cushion 13 and the second cushion 14 are fine aggregate concrete cushions.

[0037] The working principle of a precast double-ribbed beam slab structure assembled road provided by the present utility model is as follows:

[0038] Before construction, the intermediate beam 12 and the side beam 11 are prefabricated in the PC factory. According to the drawings, the bolts 16 are arranged inside the intermediate beam 12 and the side beam 11. The depth of the bolts 16 embedded in the intermediate beam 12 and the side beam 11 is not less than 150 mm. The diameter of the bolts 16 is 22 - 30 mm. The length of the bolts 16 protruding out of the top surface of the subgrade beam should meet the design thickness of the assembled road.

[0039] During construction, first, an excavation trench for the subgrade beam is made on the road base course 1. Then, a first cushion layer 13 with a thickness of 60 mm is provided under the excavation trench for the subgrade beam. After that, the intermediate beam 12 and the side beam 11 are respectively hoisted to the inner side surface of the excavation trench for the subgrade beam and are located on the top of the first cushion layer 13. Then, the void between the intermediate beam 12 and the side beam 11 and the excavated subgrade beam trench is filled with fine aggregate concrete. After that, the double-ribbed beam integrated slab 2 is hoisted to the top of the intermediate beam 12 and the side beam 11, so that the embedded bolts 11 pass through the embedded bolt holes 23 on the double-ribbed beam integrated slab 2. The hole diameter of the embedded bolt holes 23 is 2 - 3 mm larger than the diameter of the bolts 16. After the bolts 16 pass through the holes, nuts 17 are used to tighten them on the top of the double-ribbed beam integrated slab 2. And the length of the bolts 11 protruding out of the nuts 17 after tightening is 3 - 5 mm. The spacing between the bolts 16 for fixing the double-ribbed beam integrated slab 2 is 600 - 1000 mm.

[0040] After the structure installation is completed, a micro-expansion low-shrinkage high-strength fine aggregate concrete grouting material is poured into the cavity between the double-ribbed beam integrated slab 2 and the second cushion layer 14. After grouting, rubber plugs are used to seal the holes.

[0041] After the overall structure is paved, an asphalt concrete surface layer 24 is provided on the top of the double-ribbed beam integrated slab 2. The thickness of the asphalt concrete surface layer 24 is designed according to the actual engineering situation, with the design elevation of the top surface of the assembled road as the standard. And the asphalt concrete surface layer 24 is fully paved at one time, covering the exposed bolts 16 on the top of the double-ribbed beam integrated slab 2, and has a protective layer with a thickness of not less than 60 mm.

[0042] Compared with the related technologies, a prefabricated double-ribbed slab structure assembled road provided by the present utility model has the following beneficial effects:

[0043] Through the cooperation of structures such as the road base course 1, the side beam 11, the intermediate beam 12, the fine aggregate concrete grouting layer 15, the double-ribbed beam integrated slab 2, and the asphalt concrete surface layer 24, before construction, the side beam 11, the intermediate beam 12, and the double-ribbed beam integrated slab 2 are prefabricated in the PC prefabrication factory first, and then transported to the site for assembly. In this way, multiple links such as in-situ casting and curing are reduced. After installation and forming, the road can be opened to traffic, greatly shortening the construction period. And the prefabricated components of the assembled road can be mass-produced in the factory, reducing the production cost. At the same time, the construction process of the assembled road is relatively simple, reducing the waste of labor and materials, and also reducing the construction cost. Embodiment

[0044] Please refer to Figure 4 and Figure 5 Based on a precast double-ribbed slab structure assembly road provided by the first embodiment of the present application, another precast double-ribbed slab structure assembly road is proposed in the second embodiment of the present application. The second embodiment is only a preferred way of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0045] Specifically, the difference of a precast double-ribbed slab structure assembly road provided by the second embodiment of the present application is that in a precast double-ribbed slab structure assembly road, a plurality of reserved holes 31 are provided inside the double-ribbed beam integrated slab 2.

[0046] A prestressing tendon 3 is provided inside each of the plurality of reserved holes 31.

[0047] The reserved holes 31 are formed by pre-embedding steel sleeves. When the unbonded prestressing technology is adopted, the hole diameter of the reserved holes 31 is 3 mm larger than the outer diameter of the prestressing tendon adopted in the design. When the bonded prestressing technology is adopted, the hole diameter of the reserved holes 31 is equal to the inner diameter of the prestressing tendon duct (corrugated pipe) pre-embedded in the design.

[0048] The working principle of a precast double-ribbed slab structure assembly road provided by the present utility model is as follows:

[0049] Reserved holes 31 are provided in the middle of the rib beam of the double-ribbed beam integrated slab 2, and a prestressing tendon 3 is provided inside the reserved holes 31, and anchor devices are provided at both ends of the prestressing tendon 3 for limiting the prestressing tendon 3.

[0050] Compared with the related technology, a precast double-ribbed slab structure assembly road provided by the present utility model has the following beneficial effects:

[0051] Through the arrangement of the prestressing tendon 3 and the reserved holes 31, when in use, by applying a pre-tensile stress to the prestressing tendon, the resistance of the concrete structure under load can be significantly enhanced, enabling it to bear a greater load, effectively restricting the appearance and development of cracks when the concrete is in tension, and improving the durability and integrity of the structure.

[0052] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A prefabricated double-rib beam-slab structure assembly road, characterized in that: include: A roadbed (1), wherein a middle beam (12) is arranged in the middle of the roadbed (1), side beams (11) are arranged on both sides of the roadbed (1), a plurality of bolts (16) are arranged at the top of the middle beam (12) and the side beams (11), and a second cushion layer (14) and a fine stone concrete grouting layer (15) are arranged in the middle of the middle beam (12) and the side beams (11), respectively; A plurality of double-rib beam integrated plates (2), wherein the plurality of double-rib beam integrated plates (2) are respectively arranged on the top of the middle beam (12) and the side beam (11); An asphalt concrete surface layer (24), the asphalt concrete surface layer (24) being arranged on top of the plurality of double-rib beam integrated plates (2).

2. The prefabricated double-rib beam-slab structure assembly road according to claim 1, characterized in that: The bottom of the middle beam (12) and the side beam (11) are both provided with a first cushion layer (13), the second cushion layer (14) is provided on the top of the road base layer (1), and the second cushion layer (14) is provided at the bottom of the fine stone concrete grouting layer (15).

3. The prefabricated double-rib beam-slab structure assembly road according to claim 2, characterized in that: A plurality of bolt pre-set holes (23) are provided inside the plurality of double-rib beam integrated plates (2); the bolts (16) are arranged on the inner side surfaces of the bolt pre-set holes (23); the outer side surfaces of the bolts (16) are threadedly connected with nuts (17); and the nuts (17) are arranged on the top of the double-rib beam integrated plates (2).

4. The prefabricated double-rib beam-slab structure assembly road according to claim 3, characterized in that: A grouting hole (21) and a grouting hole (22) are respectively provided on the top of the double-ribbed beam integrated plate (2), and the bottoms of the grouting hole (21) and the grouting hole (22) both extend to the bottom of the double-ribbed beam integrated plate (2).

5. The prefabricated double-rib beam-slab structure assembly road according to claim 4, characterized in that: The thickness of the first cushion layer (13) and the second cushion layer (14) are both 60 millimeters, and the gap between adjacent double-rib beam integrated plates (2) is 10 millimeters.

6. The prefabricated double-rib beam-slab structure assembly road according to claim 1, characterized in that: A plurality of reserved holes (31) are provided inside the double-rib beam integrated plate (2).

7. The prefabricated double-rib beam-slab structure assembly road according to claim 6, characterized in that: Prestressed tendons (3) are arranged inside each of the plurality of reserved holes (31).

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