A transport pavement structure for ultra-heavy-load rockets suitable for soft foundations

Abstract

This utility model relates to the field of ultra-heavy-lift rocket transport pavement technology, specifically an ultra-heavy-lift rocket transport pavement structure suitable for soft foundations, comprising: a pavement surface layer, the pavement surface layer including multiple overlapping layers, with adjacent overlapping layers forming an overlapping joint; a pavement base layer, the pavement base layer being a cement-stabilized crushed stone layer located below the pavement surface layer; and a pavement cushion layer, the pavement cushion layer being a graded crushed stone layer located below the pavement base layer, the pavement cushion layer being situated on a subgrade. This ultra-heavy-lift rocket transport pavement structure suitable for soft foundations exhibits strong adaptability to foundation bearing capacity, meeting requirements without foundation treatment or with simple foundation treatment, and possesses advantages and characteristics such as convenient and quick construction, strong load-bearing capacity, and minimal settlement deformation.

Description

Technical Field

[0001] This utility model relates to the field of ultra-heavy-load rocket transport pavement technology, and in particular to an ultra-heavy-load rocket transport pavement structure suitable for soft foundations. Background Technology

[0002] The heavy-lift rocket is assembled into a single unit in the vertical assembly and testing facility and launch pad, and then transported to the launch area via heavy-duty roads using a self-propelled trackless modular transport vehicle. The combined weight of the rocket and launch platform is extremely high, and the local and overall load effects exerted by this assembly on the pavement and its underlying foundation are far greater than those of conventional transport vehicles. When the foundation's own load-bearing capacity is low, the pavement load-bearing capacity becomes even more critical. Therefore, studying the load-bearing capacity of ultra-heavy-load pavements under specific loads is of great significance. Utility Model Content

[0003] The purpose of this invention is to provide a transport pavement structure for ultra-heavy-load rockets suitable for soft foundations, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a transport pavement structure for ultra-heavy-load rockets suitable for soft foundations, comprising: The pavement surface layer includes multiple overlapping layers, with adjacent overlapping layers forming an overlapping portion; The pavement base course is a cement-stabilized crushed stone layer located below the pavement surface layer; The pavement subbase is a graded crushed stone layer located below the pavement base course and situated on the subgrade.

[0005] Preferably, the pavement surface layer is a two-tiered platform, wherein the first-tier platform is the pavement width for passing heavy-lift rocket transport vehicles, and the second-tier platform is the expanded area on both sides of the pavement.

[0006] Preferably, the overlapping layer is a concrete pouring structure, and the top and bottom of the overlapping layer are provided with steel reinforcement mesh. The steel reinforcement mesh includes multiple T-shaped steel sections arranged longitudinally along the pavement surface layer and multiple through steel bars connecting the multiple T-shaped steel sections. Multiple upright steel bars connect the upper and lower steel reinforcement meshes.

[0007] Preferably, the adjacent overlapping layers form two expansion joints by overlapping portions, and the expansion joints are filled with silicone closed-cell expansion joint plates.

[0008] Preferably, a polyethylene film is provided between the overlapping portions.

[0009] Preferably, a two-way steel mesh is provided at the bottom of the upper lap joint and at the top of the lower lap joint.

[0010] Preferably, the pavement surface layer has piles of crushed stone on both sides, and the piles of crushed stone are made of graded crushed stone or natural sand and gravel and compacted.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The embodiment of this utility model provides a super-heavy-load rocket transport pavement structure suitable for soft foundations, which has the advantages and characteristics of high load-bearing capacity and small settlement deformation. It can meet the requirements without foundation treatment or with simple foundation treatment, and the construction is convenient and quick. The expansion joint of the overlapping mode has the characteristics of strong load transfer capacity, large expansion and contraction space, and safety and reliability. Attached Figure Description

[0012] Figure 1 A schematic diagram of a super-heavy-load rocket transport pavement structure suitable for soft foundations, provided for embodiments of this utility model; Figure 2 A longitudinal sectional view of the pavement layer of a super-heavy-load rocket transport pavement structure suitable for soft foundations, provided for an embodiment of this utility model. Figure 3 The present invention provides a transverse sectional view of the pavement layer of an ultra-heavy-load rocket transport pavement structure suitable for soft foundations. Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0013] In the diagram: 1. Pavement surface layer; 11. Overlapping slab; 12. Overlap joint; 13. T-shaped steel; 14. Through-steel reinforcement; 15. Stirred steel reinforcement; 16. Expansion joint; 17. Two-way steel mesh; 2. Pavement base layer; 3. Pavement subbase; 4. Crushed stone pile. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Figure 1 This is a structural diagram of a heavy-lift rocket transport pavement structure suitable for soft foundations, provided as an embodiment of the present invention. Figure 1 As shown, the embodiments of this utility model provide a super-heavy-lift rocket transport pavement structure suitable for soft foundations. This super-heavy-lift rocket transport pavement structure suitable for soft foundations may include: The pavement surface layer 1 includes a plurality of overlapping layers 11, and adjacent overlapping layers 11 have overlapping portions 12 that form an upper and lower overlap. Pavement base layer 2, which is a cement-stabilized crushed stone layer located below pavement surface layer 1; Pavement subbase 3 is a graded crushed stone layer located below the pavement base course 2 and is situated on the subgrade.

[0016] The embodiment of this utility model provides a super-heavy-load rocket transport pavement structure suitable for soft foundations. Construction proceeds from bottom to top, starting with clearing the work site and then placing graded crushed stone as a pavement subbase 3 on the subgrade. This flexible subbase has excellent drainage capacity and allows for close contact with the pavement base layer 2. Next, a cement-stabilized crushed stone layer is placed as the pavement base layer 2. This cement-stabilized crushed stone layer improves the bearing capacity of the surface layer and provides a stable platform for the surface concrete construction. Finally, the pavement surface layer 1 is constructed by pouring concrete. This super-heavy-load rocket transport pavement structure suitable for soft foundations exhibits strong adaptability to foundation bearing capacity, requiring no foundation treatment or only simple foundation treatment to meet requirements. It features convenient and quick construction, high load-bearing capacity, and minimal settlement deformation.

[0017] In one embodiment of this utility model, the pavement layer 1 of the ultra-heavy-load rocket transport pavement structure suitable for soft foundations is a two-stage platform, wherein the first stage platform is the pavement width for passing ultra-heavy-load rocket transport vehicles, and the second stage platform is the expanded area on both sides of the pavement.

[0018] Figure 2 A longitudinal sectional view of the pavement layer of a super-heavy-load rocket transport pavement structure suitable for soft foundations, provided for an embodiment of this utility model. Figure 3 The present invention provides a transverse sectional view of the pavement layer of an ultra-heavy-load rocket transport pavement structure suitable for soft foundations. Figure 4 for Figure 3 A magnified view of a portion of point A in the image. (See image below.) Figures 2 to 4 As shown, in one embodiment of this utility model, the overlapping layer 11 is a concrete pouring structure. The top and bottom of the overlapping layer 11 are provided with steel reinforcement mesh. The steel reinforcement mesh includes multiple T-shaped steel 13 arranged longitudinally along the surface layer 1 of the pavement and multiple through steel bars 14 connecting the multiple T-shaped steel 13. Multiple upright steel bars 15 are connected between the upper and lower steel reinforcement meshes.

[0019] A steel mesh is formed by T-shaped steel 13 and through-steel bars 14, and reinforced with upright steel bars 15 as a skeleton. Then, concrete is poured to make overlapping slabs 11. Multiple overlapping slabs 11 are connected to each other by overlapping parts 12 to form the pavement surface layer 1, which serves as the road surface for the heavy-duty rocket transport vehicle.

[0020] like Figure 2 As shown, in one embodiment of the present invention, adjacent overlapping layers 11 form two expansion joints 16 through overlapping portions 12, and the expansion joints 16 are filled with silicone closed-cell expansion joint plates.

[0021] The pavement surface layer 1 has an expansion joint 16 along its longitudinal direction. The expansion joint 16 is set in an overlapping mode and is filled with a silicone closed-cell expansion joint board material. The overlapping mode of the expansion joint 16 has the characteristics of strong load transfer capacity, large expansion and contraction space, and safety and reliability.

[0022] In one embodiment of this invention, a polyethylene film is provided between the overlapping portions 12. The polyethylene film layer enables horizontal relative expansion and contraction displacement of the upper and lower layers and vertical force transmission and load bearing.

[0023] In one embodiment of this utility model, such as Figure 2 As shown, a two-way steel mesh 17 is provided at the bottom of the upper lap portion 12 and at the top of the lower lap portion 12. The two-way steel mesh 17 is used to bear the bending tensile stress of the bottom of the upper lap portion 12 and the top of the lower lap portion 12 under live load.

[0024] like Figure 1 As shown, in one embodiment of this utility model, the pavement surface layer 1 has crushed stone piles 4 on both sides. The crushed stone piles 4 are made of graded crushed stone or natural gravel and compacted. The crushed stone piles 4 are used to laterally restrain the pavement surface layer 1 and enhance the lateral stability of the pavement surface layer 1.

[0025] Working principle: Graded crushed stone is set on the subgrade as the pavement cushion layer 3. This flexible cushion layer has good drainage capacity and can achieve close contact with the pavement base layer 2. Next, a cement-stabilized crushed stone layer is set as the pavement base layer 2. The cement-stabilized crushed stone layer improves the bearing capacity of the surface layer and provides a stable surface concrete construction platform. Then, a steel mesh is formed by T-shaped steel 13 and through steel bars 14, and reinforced with upright steel bars 15 as a skeleton. Then, concrete is poured to form overlapping slabs 11. Multiple overlapping slabs 11 are interlocked by overlapping parts 12 to form the pavement surface layer 1, which serves as the road surface for the heavy-duty rocket transport vehicle. The pavement surface layer 1 has expansion joints 16 along its longitudinal direction. The expansion joints 16 are set in an overlapping mode and are filled with silicone closed-cell expansion joint board material. The overlapping mode of the expansion joints 16 has the characteristics of strong load transfer capacity, large expansion and contraction space, and safety and reliability. This ultra-heavy-load rocket transport pavement structure, which is suitable for soft foundations, has strong adaptability to foundation bearing capacity. It can meet the requirements without foundation treatment or with simple foundation treatment. It has the advantages and characteristics of convenient and quick construction, strong load-bearing capacity, and small settlement deformation.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transport pavement structure for ultra-heavy-load rockets suitable for soft foundations, characterized in that, include: The pavement surface layer (1) includes a plurality of overlapping layers (11), and adjacent overlapping layers (11) have overlapping portions (12) forming an upper and lower overlap. The pavement base layer (2) is a cement-stabilized crushed stone layer located below the pavement surface layer (1); The pavement subbase (3) is a graded crushed stone layer located below the pavement base layer (2) and is located on the subgrade.

2. The ultra-heavy-load rocket transport pavement structure suitable for soft foundations according to claim 1, characterized in that, The pavement surface layer (1) is a two-stage platform, where the first stage platform is the pavement width for passing heavy-lift rocket transport vehicles, and the second stage platform is the expanded area on both sides of the pavement.

3. The ultra-heavy-load rocket transport pavement structure suitable for soft foundations according to claim 2, characterized in that, The overlapping layer (11) is a concrete pouring structure. The top and bottom of the overlapping layer (11) are provided with steel reinforcement mesh. The steel reinforcement mesh includes multiple T-shaped steel (13) arranged longitudinally along the pavement surface layer (1) and multiple through steel bars (14) connecting the multiple T-shaped steel (13). Multiple upright steel bars (15) are connected between the upper and lower steel reinforcement meshes.

4. The ultra-heavy-load rocket transport pavement structure suitable for soft foundations according to claim 3, characterized in that, The adjacent overlapping layers (11) form two expansion joints (16) through overlapping portions (12), and the expansion joints (16) are filled with silicone closed-cell expansion joint plates.

5. The ultra-heavy-load rocket transport pavement structure suitable for soft foundations according to claim 4, characterized in that, A polyethylene film is provided between the overlapping portions (12) of the upper and lower parts.

6. The ultra-heavy-load rocket transport pavement structure suitable for soft foundations according to claim 5, characterized in that, Two-way steel mesh (17) is provided at the bottom of the upper lap (12) and at the top of the lower lap (12).

7. The ultra-heavy-load rocket transport pavement structure suitable for soft foundations according to claim 6, characterized in that, The pavement surface layer (1) has piles of crushed stone (4) on both sides, and the piles of crushed stone (4) are made of graded crushed stone or natural sand and gravel and compacted.

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