Prefabricated assembled sidewalk

Abstract

The utility model discloses a prefabricated assembled sidewalk which comprises a prefabricated front plate, a prefabricated rear plate, a prefabricated road edge plate and a supporting assembly, the prefabricated front plate is a flat plate, the rear side of the prefabricated rear plate is provided with a supporting structure protruding downwards, and the upper surface of the prefabricated rear plate is provided with a blind sidewalk; in the width direction of the sidewalk, the front side of the prefabricated front plate is in lap joint with the prefabricated road edge plate, the prefabricated rear plate is spliced to the rear side of the prefabricated front plate, and a supporting assembly with a leveling function is arranged at an abutted seam in the length direction; the prefabricated front plates, the prefabricated rear plates and the prefabricated road edge plates are sequentially spliced in the length direction of the sidewalk, and the tree pool can be spliced through the prefabricated front plates. The prefabricated front plate and the prefabricated rear plate are arranged according to the width of the sidewalk, the weight of the prefabricated plate body is reduced, and during paving, the prefabricated front plate and the prefabricated rear plate only need to be embedded with the fixed supporting assembly according to the designated position after the concrete base construction of the sidewalk is completed (during the concrete base construction); and machinery such as a forklift or a suction cup vehicle is used for hoisting and placing on the supporting assembly and the prefabricated road edge plate, construction through a crane is not needed, and the construction cost is saved. In the construction hoisting process, one-time forming can be achieved by conducting fine adjustment, leveling and fixing through a bolt and nut set of the supporting assembly, the splicing surface does not need any treatment, and the construction efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the field of prefabricated assembled structures, and specifically relates to a prefabricated and assembled sidewalk. Background Art

[0002] The sidewalk paved with stone slabs has the following defects:

[0003] The construction process is complex and difficult;

[0004] Professional techniques and tools are required for paving during construction, and construction workers need to have high skills and experience;

[0005] The construction period is usually long, which not only increases the time cost of the project, but also may cause long-term interference to the surrounding environment and residents' lives;

[0006] During the use process, regular cleaning and maintenance are required to maintain its beauty and extend its service life, increasing the maintenance cost and labor input;

[0007] In addition, as a non-renewable resource, the exploitation and use of stone put pressure on the earth's ecological environment and natural resources.

[0008] Based on the above defects of the stone sidewalk, the precast concrete slab assembled sidewalk came into being. Such as CN217758180U and CN 220377030 U.

[0009] However, the above patents have the following defects:

[0010] The assembled slab is a fully precast slab, and the span can generally reach 3.5 meters to 5 meters. According to the relevant structural stress calculation, the relevant thickness design should reach 100mm - 150mm. Therefore, the weight of each such component with a width of 2.5m can reach 2 - 4.5 tons, and the requirements for relevant hoisting construction vehicles are very high, thus greatly increasing the production cost and assembly and hoisting cost of relevant components.

[0011] During the later maintenance process (mainly including the addition and relocation of relevant water, electricity, gas wells, signal traffic, and advertising signs in the sidewalk), since the whole slab needs to be hoisted, and there is often not enough space for stacking beside the used sidewalk, which delays the project progress very much; some maintenance and rectification also have to drill holes in the thick slab, which will also increase the relevant cost, and the later rectification and maintenance process is extremely troublesome.

[0012] It is necessary to notch and pre-embed the surface of the precast component. After notching the surface of the slab, it is easy to accumulate dust and water, and there will be greater damage during the later use process, which will cause the leveling device to fail. Seriously, it will require all to be replaced again, and the relevant maintenance cost will increase sharply. Content of the Utility Model

[0013] The purpose of the present utility model is to provide a prefabricated and assembled sidewalk that can overcome the above defects.

[0014] The prefabricated and assembled sidewalk provided by the present utility model adopts the following technical solutions: It includes a prefabricated front plate, a prefabricated rear plate, a prefabricated curb plate, and a support assembly. The prefabricated front plate is a flat plate. There is a downward convex support structure at the rear side of the prefabricated rear plate, and there is a blind path on the upper surface of the prefabricated rear plate. Along the width direction of the sidewalk, the front side of the prefabricated front plate overlaps on the prefabricated curb plate, and the prefabricated rear plate is assembled at the rear side of the prefabricated front plate. A support assembly with a leveling function is arranged along the length direction at the joint. Along the length direction of the sidewalk, the prefabricated front plate, the prefabricated rear plate, and the prefabricated curb plate are respectively assembled in sequence, and the prefabricated front plate can be assembled into a tree pit.

[0015] When the above technical solution is implemented, the prefabricated front plate includes a first type of plate and a second type of plate. The first type of plate is a complete rectangular plate. An L-shaped groove is prefabricated on the inner side at one end in the length direction of the second type of plate, and the thickness of the L-shaped groove is the same as the thickness of the plate body.

[0016] When the above technical solution is implemented, the cross-sectional shape of the prefabricated rear plate is an L shape inverted horizontally. The thickness of the long side is the same as the thickness of the prefabricated front plate, and the short side serves as the support structure.

[0017] When the above technical solution is implemented, the thicknesses of both the prefabricated front plate and the prefabricated rear plate are 60 - 70 mm.

[0018] When the above technical solution is implemented, the cross-sectional shape of the prefabricated curb plate is an inverted T shape. The bottom surface of its wing plate is a plane. The inner width of the upper surface of the wing plate is smaller than the outer width, and the outer side is an inclined plane that slopes inwards.

[0019] When the above technical solution is implemented, the front side of the prefabricated front plate overlaps on the upper surface of the inner side of the wing plate of the prefabricated curb plate.

[0020] When the above technical solution is implemented, the support assembly includes a steel plate frame and a bolt-nut group. The steel plate frame is a rectangular frame with open ends at both ends in the length direction. Multiple groups of countersunk holes symmetric about the center plane in the length direction are arranged on its top plate. Each group of countersunk holes has at least two symmetric about the center plane in the width direction of the top plate, and each countersunk hole is respectively connected to a bolt-nut group.

[0021] When the above technical solution is implemented, the nut of the bolt-nut group is welded to the bottom surface of the countersunk hole, and the rod body of the bolt passes through the nut from top to bottom.

[0022] When the above technical solution is implemented, a lock washer is arranged between the bottom surface of the rod body of the bolt and the bottom plate of the steel plate frame.

[0023] When the above technical solution is implemented, the length of the steel plate frame is 150 - 200 mm, and the width is 100 - 150 mm.

[0024] The utility model has the following advantages:

[0025] The precast front plate and the precast rear plate are set according to the width of the sidewalk, reducing the weight of the precast plate body. During paving, both the precast front plate and the precast rear plate only need to be hoisted and placed on the support assembly and the precast roadside plate by a forklift or a suction cup vehicle after the construction of the sidewalk concrete base layer is completed (the fixed support assembly is embedded at the designated position during the construction of the concrete base layer), without the need for crane construction, thus saving construction costs. During the construction hoisting process, fine adjustment and leveling can be carried out through the bolt and nut group of the support assembly and then fixed in one step, and no treatment is required on the assembled surface, not only with high construction efficiency.

[0026] If a whole plate is precast according to the overall width of the sidewalk, due to the large span of the plate body, the thickness needs to be at least 100 mm precast. However, in the utility model, the width dimensions of the precast front plate and the precast rear plate are only half of the width of the sidewalk, and the thickness can be as thin as 60 mm, saving the input cost.

[0027] A forming groove is reserved at one end of the precast front plate. The tree pit is assembled by two precast front plates, and support assemblies are respectively arranged at both ends in the length direction of the tree pit, so that the plate body at the tree pit is not easy to crack, and water and dust accumulation on the surface of the plate body can be avoided, the service life of the support assembly is prolonged, and the maintenance cost is reduced.

[0028] Due to the small volume of the precast front plate and the precast rear plate, it is more conducive to the maintenance of the plate body and the maintenance operation of underground pipelines and improves the maintenance progress.

[0029] A lock washer is arranged between the lower end of the bolt rod body of the support assembly and the bottom plate of the steel plate frame, which can avoid the dislocation of the precast plate body caused by the loosening of the bolt during the use of the sidewalk. Description of the Drawings

[0030] Figure 1 It is a partial section top view schematic diagram of an embodiment of the utility model.

[0031] Figure 2 It is Figure 1 The enlarged schematic diagram of A-A in

[0032] Figure 3 It is Figure 2 The enlarged schematic diagram of part B in

[0033] Figure 4 It is Figure 3 The top view schematic diagram of the support assembly in Detailed Embodiments

[0034] As Figures 1 to 4 shown, the precast assembled sidewalk disclosed in this embodiment includes a precast front plate, a precast rear plate, a precast roadside plate and a support assembly.

[0035] In this embodiment, tree pits need to be set on the sidewalk. The precast front slab includes a first type of slab and a second type of slab. The first type of slab 1 is a complete rectangular slab, and an L-shaped groove is precast on the inner side at one end in the length direction of the second type of slab 2. The thickness of the L-shaped groove is 60 mm, which is the thickness of the slab body.

[0036] In other embodiments, if there is no need to set tree pits, the precast front slabs are all complete rectangular slabs.

[0037] The cross-sectional shape of the precast rear slab 3 is an L-shaped inverted horizontally. The thickness of the long side is the same as that of the precast front slab, and the short side serves as the lower support structure with a width of 100 mm. A blind path is precast on the upper surface of the precast rear slab 3.

[0038] The cross-sectional shape of the precast curb slab 4 is an inverted T-shaped. The bottom surface of its wing plate is a plane. The inner width of the upper surface of the wing plate is smaller than the outer width, and the outer side is an inclined plane (which is beneficial for water drainage).

[0039] The support assembly 5 includes a steel plate frame and a bolt-nut group.

[0040] The steel plate frame 51 is a rectangular frame with open ends at both ends in the length direction. Two groups of countersunk holes 511 symmetrical about the central plane in the length direction are provided on its top plate. Each group of countersunk holes includes two symmetrical about the central plane in the width direction of the top plate, and each countersunk hole is respectively connected to a bolt-nut group.

[0041] The nut 52 of the bolt-nut group is welded to the bottom surface of the countersunk hole, and the rod body 53 of the bolt passes through the nut from top to bottom.

[0042] A lock washer 54 is provided between the bottom surface of the rod body of the bolt and the bottom plate of the steel plate frame. The thickness specifications of the lock washer can be prepared in various types according to actual needs.

[0043] Since the nut is welded and fixed to the top plate of the steel plate frame, turning the bolt can realize its up and down movement. Figure 3 As shown, the head 55 of the bolt is located in the large-diameter section of the countersunk hole on the top plate of the steel plate frame, and the top surface is flush with the upper surface of the top plate.

[0044] In this embodiment, the widths of the precast front slab and the precast rear slab are both 1650 mm, the lengths are both 2495 mm, and the longitudinal and transverse assembly gaps are both 5 mm. The length of the tree pit SC formed by assembling the precast front slabs is 1205 mm, and the width is 1300 mm. It is advisable to set at least two groups of support assemblies for each unit length, and ensure that there are support assemblies at both ends in the length direction of the tree pit.

[0045] The construction process of this embodiment is as follows:

[0046] For the foundation of the construction sidewalk, a 50-mm-thick rammed plain soil layer 6 (compaction degree ≥ 92%) is successively laid on the roadbed, a 70-mm-thick C20 concrete layer 7, and an 80-mm-thick filled sand and gravel material 8. Note that when laying the C20 concrete layer, the fixed support assembly 5 is embedded at the designated position;

[0047] Pave the precast curb stones 4;

[0048] Lift and install the precast front slab, making the front side of the precast front slab lap on the inner wing plate of the precast curb stone 4 and the rear side lap on the support assembly 5;

[0049] Lift and install the precast rear slab 3, making the rear side of the precast rear slab support on the C20 concrete layer 7 and the front side lap on the support assembly 5;

[0050] Ensure the horizontal alignment of the upper surfaces of the precast rear slab and the precast front slab by fine-tuning the bolts of the support assembly;

[0051] A lock washer 54 is arranged between the lower end of the bolt and the steel plate frame bottom plate of the support assembly.

[0052] Construct successively along the length direction of the sidewalk with reference to the above operations. At the tree pit position, the L-shaped groove ends of the two precast front slabs are butt-jointed, and pay attention to the setting position of the support assembly.

[0053] From the above structure and construction process of this embodiment, it can be seen that the utility model has the following advantages:

[0054] The precast front slab and the precast rear slab are set according to the width of the sidewalk, reducing the weight of the precast slab body. During paving, the precast front slab and the precast rear slab only need to be hoisted and placed on the support assembly and the precast curb stone by a forklift or a suction cup vehicle after the sidewalk concrete base layer is constructed (the fixed support assembly is embedded at the designated position during the construction of the concrete base layer), without the need for crane construction, saving construction costs. During the construction hoisting process, fine-tuning and leveling can be carried out through the bolt and nut group of the support assembly and fixed at one time, and no treatment is required on the assembled surface, not only with high construction efficiency.

[0055] If a whole slab is precast according to the overall width of the sidewalk, due to the large span of the slab body, the thickness needs to be at least 100 mm. In the utility model, the width dimensions of the precast front slab and the precast rear slab are only half of the width of the sidewalk, and the thickness can be as thin as 60 mm, saving the input cost.

[0056] A forming groove is reserved at one end of the precast front slab. The tree pit is assembled by two precast front slabs, and support assemblies are respectively arranged at both ends in the length direction of the tree pit, making the slab body at the tree pit not easy to crack, and also avoiding water and dust accumulation on the surface of the slab body, prolonging the service life of the support assembly and reducing the maintenance cost.

[0057] Due to the small volume of the precast front panel and the precast rear panel, it is more conducive to the maintenance of the panel body and the underground pipeline, and improves the maintenance progress.

[0058] A lock washer is arranged between the lower end of the bolt rod body of the support component and the bottom plate of the steel plate frame, which can prevent the precast panel body from shifting due to bolt loosening during the use of the sidewalk.

Claims

1. A prefabricated assembled sidewalk, characterized in that: It includes a prefabricated front plate, a prefabricated rear plate, a prefabricated curb plate and a supporting assembly. The prefabricated front plate is a flat plate, the rear side of the prefabricated rear plate has a convex supporting structure, and the upper surface of the prefabricated rear plate has a blind path. Along the width direction of the sidewalk, the front side of the prefabricated front plate is overlapped on the prefabricated curb plate, the prefabricated rear plate is assembled on the rear side of the prefabricated front plate, and a support assembly with a leveling function is arranged along the length direction of the joint; Along the length direction of the sidewalk, the prefabricated front panel, prefabricated rear panel and prefabricated curb panel are assembled in sequence, and the prefabricated front panel can be assembled into a tree pit.

2. The prefabricated assembled sidewalk according to claim 1, characterized in that: The prefabricated front plate includes a first type of plate and a second type of plate. The first type of plate is a complete rectangular plate, and the second type of plate has an L-shaped groove prefabricated inside one end in the length direction, and the thickness of the L-shaped groove is the thickness of the plate body.

3. The prefabricated assembled sidewalk according to claim 2, characterized in that: The cross-sectional shape of the prefabricated rear plate is a horizontally inverted L-shape, the thickness of the long side is consistent with the thickness of the prefabricated front plate, and the short side serves as the supporting structure.

4. The prefabricated assembled sidewalk according to claim 3, characterized in that: The thickness of the prefabricated front plate and the prefabricated rear plate are both 60-70 mm.

5. The prefabricated assembled sidewalk according to claim 1, characterized in that: The cross-sectional shape of the prefabricated curb plate is an inverted T-shape, the bottom surface of the wing plate is a plane, the inner width of the upper surface of the wing plate is smaller than the outer width, and the outer side is an inwardly inclined slope.

6. The prefabricated assembled sidewalk according to claim 5, characterized in that: The front side of the prefabricated front plate is overlapped with the inner upper surface of the wing plate of the prefabricated curb plate.

7. The prefabricated assembled sidewalk according to claim 1, characterized in that: The support assembly includes a steel plate frame and a bolt and nut group. The steel plate frame is a rectangular frame with open ends at both ends in the length direction. A plurality of groups of countersunk holes symmetrical about the center plane in the length direction are arranged on the top plate. Each group of countersunk holes has at least two symmetrical about the center plane in the width direction of the top plate, and each countersunk hole is connected to a bolt and nut group respectively.

8. The prefabricated assembled sidewalk according to claim 7, characterized in that: The nut of the bolt-nut group is welded to the bottom surface of the countersunk hole, and the rod of the bolt is screwed through the nut from top to bottom.

9. The prefabricated assembled sidewalk according to claim 8, characterized in that: An anti-loosening pad is arranged between the bottom surface of the rod body of the bolt and the bottom plate of the steel plate frame.

10. The prefabricated assembled sidewalk according to claim 7, characterized in that: The length of the steel plate frame is 150-200 mm, and the width is 100-150 mm.

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