Construction road structure

Abstract

The application provides a construction road structure, which comprises a bearing part and a constraint part. The bearing part comprises a bearing structure and a load dispersion structure which are arranged in a stacking manner along a direction perpendicular to a soft soil foundation. The load dispersion structure comprises a first rod group and a second rod group which are arranged in a stacking manner. The first rod group comprises a plurality of first rod members which are arranged at intervals along a first horizontal direction and extend along a second horizontal direction. The second rod group comprises a plurality of second rod members which are arranged at intervals along the second horizontal direction and are arranged perpendicularly to the first rod members and are connected in a sliding mode. The load dispersion structure further comprises a fiber interlacing body which comprises a plurality of connected fiber grid units. Adjacent two fiber grid units are connected in a movable mode. The constraint part comprises at least two lateral constraint bodies which are arranged on opposite sides of the bearing part along a direction parallel to the soft soil foundation and are attached to the bearing part. The construction road structure can improve the construction efficiency of the construction road.

Description

Technical Field

[0001] This application relates to the field of road construction, specifically to a construction road structure. Background Technology

[0002] High water-content soft soil areas are characterized by low soft soil strength and high compressibility. When constructing temporary roads in high water-content soft soil areas, the common practice is to excavate part or all of the soft soil layer below the foundation surface and replace it with a material with higher strength to ensure the stability of the foundation. However, when the soft soil layer is thick, the replacement method will generate a large amount of waste and backfill earth and stone, resulting in low construction efficiency of temporary roads. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a construction road structure that can improve the efficiency of construction.

[0004] The construction road structure according to the embodiments of this application includes a load-bearing part and a restraining part;

[0005] The load-bearing part includes a load-bearing structure and a load-distributing structure stacked in a direction perpendicular to the soft soil foundation, wherein the surface of the load-bearing structure away from the soft soil foundation is configured to connect with the adjacent road surface, and the surface of the load-distributing structure close to the soft soil foundation is configured to adhere to the soft soil foundation.

[0006] The load-distributing structure includes a first group of rods and a second group of rods arranged in layers. The first group of rods is arranged on the side of the second group of rods close to the soft soil foundation. The first group of rods includes a plurality of first rods arranged at intervals along a first horizontal direction and extending along a second horizontal direction. The second group of rods includes a plurality of second rods arranged at intervals along a second horizontal direction. The second rods are arranged perpendicular to the first rods. The first rods are provided with sliding buckles, and the second rods are inserted into the sliding buckles. The first rods and the second rods are slidably connected along the second horizontal direction.

[0007] The load-distribution structure also includes a fiber interwoven body, which includes multiple interconnected fiber mesh units. Adjacent fiber mesh units are movably connected. The fiber interwoven body is used to be arranged on the side of the first rod group near the soft soil foundation. The first horizontal direction, the second horizontal direction and the vertical direction of the soft soil foundation are perpendicular to each other.

[0008] The constraint portion includes at least two lateral constraint bodies, which are arranged on opposite sides of the bearing portion in a direction parallel to the soft soil foundation and are attached to the bearing portion. A portion of each lateral constraint body is configured to be inserted into the foundation in a direction perpendicular to the soft soil foundation.

[0009] The construction road structure according to the embodiments of this application has at least the following beneficial effects: The load-bearing structure is used as the road surface to directly bear the loads of vehicles, machinery, etc., and transmits the force to the load-distributing structure below. The load-distributing structure is used to distribute the load and uniformly distribute the load to the soft soil foundation. Through the relative sliding between the first and second members and / or the tightness of each fiber mesh unit of the fiber interwoven body, the load-bearing capacity of each part of the load-distributing structure is optimized. Thus, the load-distributing structure can better distribute the load applied to the area with weak bearing capacity of the soft soil foundation, avoid local subsidence, and help improve the stability of the construction road structure. At the same time, the lateral restraint body is used to insert into the foundation and form a stable restraint on both sides of the load-bearing part, effectively resisting the lateral deformation or displacement of the load-bearing part due to compression. Therefore, under the synergistic effect of the load-bearing part and the restraint part, the construction road structure in this application takes into account the stability of the load-bearing capacity. When constructing the construction road structure, there is no need to excavate the soft soil area for large-scale replacement, which helps to reduce the amount of earthwork and improve the efficiency of construction road construction.

[0010] According to some embodiments of this application, along a direction perpendicular to the soft soil foundation, a drainage isolation layer is provided on the side of the load-dispersing structure away from the load-bearing structure. The drainage isolation layer includes a fiber interwoven body and is configured to adhere to the soft soil foundation.

[0011] According to some embodiments of this application, the load-dispersing structure further includes a grid layer. Along a direction perpendicular to the soft soil foundation, the grid layer is located on the side of the isolation drainage layer close to the load-bearing structure. The grid layer includes a first rod group and a second rod group, with the first rod group being arranged in close contact with the isolation drainage layer.

[0012] According to some embodiments of this application, the grid layer includes multiple grid units, and the load-distributing structure also includes graded crushed stone, with the grid units filled with graded crushed stone.

[0013] According to some embodiments of this application, along a direction perpendicular to the soft soil foundation, the graded crushed stone covering grid layer is located on the side close to the load-bearing structure.

[0014] According to some embodiments of this application, the load-bearing structure further includes a rubble layer, which is located between the load-bearing structure and the isolation drainage layer along a direction perpendicular to the soft soil foundation.

[0015] According to some embodiments of this application, the load-bearing structure includes a pavement layer and a subbase layer. Along a direction perpendicular to the soft soil foundation, the subbase layer is located between the pavement layer and the load-distributing structure. One side of the subbase layer is attached to the pavement layer, and the opposite side of the subbase layer is attached to the load-distributing structure. The pavement layer is configured to connect with the adjacent pavement.

[0016] According to some embodiments of this application, the lateral restraint body includes a restraint plate and at least two restraint piles spaced apart along a second horizontal direction. Along a first horizontal direction, the restraint plate is connected to the side of the restraint piles near the bearing portion and fits against the bearing portion. Each restraint pile is configured to be inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation.

[0017] According to some embodiments of this application, the lateral restraint body further includes a first connector and at least two restraint piles spaced apart along a second horizontal direction. Along the first horizontal direction, the first connector is connected to the side of each restraint pile away from the bearing portion, and each restraint pile is configured to be inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation.

[0018] According to some embodiments of this application, the lateral restraint body further includes a second connector. Along the first horizontal direction, the second connector passes through the bearing portion, and one end of the second connector is connected to a first connector on one side of the bearing portion, while the other end of the second connector is connected to a first connector on the other side of the bearing portion.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the construction road structure according to an embodiment of this application;

[0022] Figure 2 This is a top view of the grid layer in an embodiment of this application.

[0023] Reference numerals: 100 bearing section, 110 bearing structure, 111 road surface layer, 112 subbase, 120 load distribution structure, 121 isolation and drainage layer, 122 grid layer, 1221 grid unit, 123 graded crushed stone, 124 rubble layer, 130 positioning pile;

[0024] Constraint part 200, lateral constraint body 210, constraint plate 211, constraint pile 212, first connector 220, second connector 230. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0029] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The embodiments of this application are described below with reference to the accompanying drawings:

[0031] refer to Figure 1 and Figure 2 According to the embodiments of this application, the construction road structure includes a load-bearing part 100 and a restraint part 200. The load-bearing part 100 includes a load-bearing structure 110 and a load-distributing structure 120 arranged in layers along a direction perpendicular to the soft soil foundation. The surface of the load-bearing structure 110 away from the soft soil foundation is configured to connect with the adjacent road surface, and the surface of the load-distributing structure 120 close to the soft soil foundation is configured to adhere to the soft soil foundation.

[0032] The load-distribution structure 120 includes a first group of rods and a second group of rods arranged in layers. The first group of rods is arranged on the side of the second group of rods close to the soft soil foundation. The first group of rods includes multiple first rods arranged at intervals along a first horizontal direction and extending along a second horizontal direction. The second group of rods includes multiple second rods arranged at intervals along the second horizontal direction. The second rods are arranged perpendicular to the first rods. The first rods are provided with sliding fasteners, and the second rods pass through the sliding fasteners. The first rods and the second rods are slidably connected along the second horizontal direction to optimize the load-bearing capacity of the load-distribution structure 120, which is beneficial to enhancing the adaptability of the load-distribution structure 120 to the deformation of the soft soil foundation, and making the overall construction road structure more stable.

[0033] The load-distribution structure 120 also includes a fiber interwoven body, which comprises multiple interconnected fiber mesh units. Adjacent fiber mesh units are movably connected. For example, the fiber interwoven body is composed of multiple rectangular pieces of fabric spliced ​​together. Each piece of fabric has spaced-apart stitched and unstitched sections along its edges. The edges of adjacent pieces of fabric are joined using intermittent stitching, meaning stitches are placed at regular intervals. Unstitched areas form movable gaps, allowing the pieces of fabric to slide relative to each other within the gaps by pulling. Alternatively, elastic stitches can be used, utilizing the elastic deformation of the stitches to allow limited displacement of the pieces of fabric. The fiber interwoven body is arranged on the side of the first rod group closest to the soft soil foundation to accommodate deformation requirements under different load conditions. This ensures the fiber interwoven body fits tightly against the soft soil foundation surface, with the first horizontal direction, the second horizontal direction, and the vertical direction of the soft soil foundation being mutually perpendicular.

[0034] The constraint part 200 includes at least two lateral constraint bodies 210, which are arranged on opposite sides of the bearing part 100 in a direction parallel to the soft soil foundation (e.g., a first horizontal direction) and fit against the bearing part 100. A portion of each lateral constraint body 210 is configured to be inserted into the foundation in a direction perpendicular to the soft soil foundation, wherein the first horizontal direction is perpendicular to the direction perpendicular to the soft soil foundation.

[0035] The load-bearing structure 110 directly bears the loads of vehicles, machinery, etc., and transmits the force to the load-distributing structure 120 below. The load-distributing structure 120 distributes the load evenly to the soft soil foundation, effectively preventing local subsidence of the soft soil foundation. At the same time, the lateral restraint body 210 is inserted into the foundation and forms a stable restraint on both sides of the load-bearing part 100, effectively resisting lateral deformation or displacement of the load-bearing part 100 due to compression. Thus, under the synergistic effect of the load-bearing part 100 and the restraint body 200, the construction road structure in this application takes into account the stability of the load-bearing capacity. When constructing the construction road structure, there is no need to excavate and replace the soft soil area, which helps to reduce the amount of earthwork and improve the efficiency of construction road construction.

[0036] Specifically, the upper surface of the load-bearing structure 110 is used to connect with the adjacent road surface. The load-bearing structure 110 can be made of high-strength materials such as plain concrete and steel plates, directly bearing the loads of vehicles, machinery, etc., and transferring the force to the load-distributing structure 120 below. The load-distributing structure 120 can be made of crushed stone, geosynthetic materials, etc. Through the inherent properties and interactions of the materials, the load is evenly distributed to the soft soil foundation, effectively avoiding the subsidence of the high water content soft soil area due to excessive local load. This eliminates the need for large-scale excavation and backfilling of the soft soil area during construction, reducing the amount of earthwork and construction procedures, thereby shortening the construction cycle and improving the efficiency of road construction.

[0037] There are two ways to connect the load-bearing structure 110 with the adjacent road surface: one is that the upper surface of the load-bearing structure 110 is flush with the height of the adjacent road surface, so that vehicles can pass directly and smoothly; the other is that the upper surface of the load-bearing structure 110 is connected to the adjacent road surface through a slope cast with concrete or precast components, so as to meet the passage requirements of different height differences.

[0038] The restraint part 200 includes at least two lateral restraint bodies 210. The two lateral restraint bodies 210 are symmetrically arranged on opposite sides of the bearing part 100 along a first horizontal direction and are tightly fitted to the bearing part 100. A portion of each lateral restraint body 210 is inserted into the foundation in a direction perpendicular to the soft soil foundation. The lateral restraint bodies 210 can be made of pine piles, channel steel, sheet piles, precast concrete piles, etc. The lateral restraint bodies 210 are inserted into the foundation for fixation by a pile driver. The portion of the lateral restraint body 210 exposed in the soft soil foundation is in contact with the side of the bearing part 100. When the bearing part 100 is subjected to pressure, the lateral restraint bodies 210 can effectively limit the lateral deformation of the bearing part 100, enhance the overall stability of the bearing part 100, and ensure that the construction road has a stable support effect during use.

[0039] Furthermore, the crushed stone and other materials of the load-distributing structure 120 can be reused through screening, and the lateral restraints 210 of the restraint part 200, such as pine piles, channel steel, and sheet piles, can be pulled out and recycled using lifting equipment. Thus, after the construction of the road structure of this application is completed, the main components and materials of the load-bearing part 100 and the restraint part 200 can be quickly dismantled and recycled, which not only reduces the generation of construction waste and reduces the impact on the environment, but also helps to save the material procurement costs of subsequent projects and realize the efficient recycling of resources. It is suitable for temporary construction road scenarios with high requirements for construction cycle, cost control and resource reuse.

[0040] refer to Figure 1 and Figure 2In other embodiments, the constraint part 200 includes a plurality of lateral constraint bodies 210. Along the first horizontal direction, lateral constraint bodies 210 are arranged on both opposite sides of the support part 100, and along the second horizontal direction, lateral constraint bodies 210 are arranged on both opposite sides of the support part 100, so that each lateral constraint body 210 surrounds and fits the outer periphery of the support part 100 to form an enclosed constraint structure. Through the coordinated force of each lateral constraint body 210, the lateral deformation of the support part 100 can be further effectively restricted.

[0041] It should be noted that the first horizontal direction, the second horizontal direction, and the direction perpendicular to the soft soil foundation are mutually perpendicular to each other, and the shape of the outer periphery of the bearing part 100 includes, but is not limited to, rectangular, trapezoidal, and other shapes.

[0042] refer to Figure 1 and Figure 2 In some embodiments, along the direction perpendicular to the soft soil foundation, a drainage isolation layer 121 is provided on the side of the load-distributing structure 120 opposite to the bearing structure 110. The drainage isolation layer 121 includes a fiber interwoven body and is configured to adhere to the soft soil foundation. The drainage isolation layer 121 is configured to have load-bearing capacity and permeability. For example, the fiber interwoven body can be composed of materials with permeable and soil-blocking properties, such as geotextile. The geotextile is formed into a fiber interwoven body through needle punching or weaving processes, so that the fiber interwoven body has a specific porosity and equivalent pore size, which can achieve the function of permeable and soil-blocking, thereby preventing the soil of the soft soil foundation from being squeezed into the bearing part 100, thereby preventing local subsidence of the construction road structure and improving the stability of the construction road structure.

[0043] Specifically, the fiber-woven material is a geotextile, which is laid on the surface of the soft soil foundation by mechanical spreading or manual installation. This isolates the soft soil foundation from other parts of the load-distribution structure 120, creating a physical barrier between them. When the construction road structure is subjected to vehicle or mechanical loads, the isolation and drainage layer 121, with its tensile strength and puncture resistance, effectively prevents material particles from the load-bearing structure 110 and the load-distribution structure 120 from sinking into the soft soil foundation. This ensures uniform contact between the bottom of the construction road structure and the soft soil foundation, allowing for even load distribution and preventing structural subsidence caused by localized stress concentration. In addition to the fiber-woven material, the isolation and drainage layer 121 may also include composite geomembranes, bentonite waterproofing blankets, foamed concrete, and other structures to complement the fiber-woven material, achieving functions such as drainage, filtration, isolation, seepage prevention, and support, thereby improving the performance and adaptability of the isolation and drainage layer 121.

[0044] In addition, during the construction of the road structure, a portion of the road structure needs to be water-sprayed and solidified. The permeability of the isolation drainage layer 121 allows water sprayed on the surface of the road structure to penetrate into the soft soil base layer through its fiber pores, effectively reducing the pore water pressure of the soft soil base and accelerating the soil consolidation process. As the pore water is discharged, the shear strength of the soft soil base gradually increases, thereby enhancing the bearing capacity of the entire road structure.

[0045] refer to Figure 1 and Figure 2 In some embodiments, the load-distributing structure 120 further includes a grid layer 122. Along the direction perpendicular to the soft soil foundation, the grid layer 122 is located on the side of the isolation drainage layer 121 close to the bearing structure 110. The grid layer 122 includes a first rod group and a second rod group. The first rod group is arranged in close contact with the isolation drainage layer 121, which is beneficial to further improve the stability of the construction road structure and enhance the load-bearing capacity of the construction road structure.

[0046] In addition, the grid layer 122 may also include a grid structure made of materials such as plastic and metal, drainage and seepage prevention components (such as drainage boards), etc., which are beneficial to further improve the load-bearing capacity of the construction road structure.

[0047] Specifically, the grid layer 122 includes a first rod group and a second rod group stacked in a direction perpendicular to the soft soil foundation. The first rod group includes a plurality of first rods, each first rod extending in a second horizontal direction and spaced apart in the first horizontal direction. The second rod group includes a plurality of second rods, each second rod extending in the first horizontal direction and spaced apart in the second horizontal direction; or, each first rod extending in the first horizontal direction and spaced apart in the second horizontal direction, and each second rod extending in the second horizontal direction and spaced apart in the first horizontal direction.

[0048] The members of the first and second rod groups intersect to form multiple adjacent grid units 1221. The size of the grid unit 1221 can be adjusted by changing the spacing between the members. For example, the first member is provided with a sliding buckle, and the second member passes through the sliding buckle to achieve a sliding connection with the first member, so as to adjust the size of the grid unit 1221. The members can be made of metal or wood (such as pine, eucalyptus, etc.), and the cross-sectional shape of the members includes, but is not limited to, circular, square, etc.

[0049] After the size of the grid unit 1221 is adjusted, two adjacent rods can be directly overlapped, or they can be connected by mortise and tenon joints, bolts, or metal fasteners to ensure the overall rigidity and stability of the grid layer 122. For example, when using round wooden rods, mortises and tenons can be made at the ends of the rods, and the two layers of rods can be fitted together and reinforced with wooden dowels. If metal rods are used, reliable connection can be achieved by welding or binding.

[0050] Therefore, the grid layer 122 can diffuse the load transmitted by the load-bearing structure 110 to the surrounding area, increase the support strength of the load-dispersing structure 120, avoid local stress concentration, and the multiple grid units also have a drainage function, so that the water that has penetrated into the grid layer 122 can continue to penetrate into the isolation drainage layer 121 through the grid layer 122, and then penetrate into the soft soil foundation through the isolation drainage layer 121, so as to accelerate the consolidation process of the construction road structure and work together with the isolation drainage layer 121 to improve the overall drainage efficiency of the construction road structure.

[0051] refer to Figure 1 and Figure 2 In some embodiments, the grid layer 122 includes multiple grid units 1221, and the load-distribution structure 120 also includes graded crushed stone 123. The grid units 1221 are filled with graded crushed stone 123, which includes crushed stone particles of different sizes. Larger particles form a skeleton structure, and smaller particles fill the gaps between the skeleton structures. When an external load is applied, crushed stone particles of different sizes will squeeze and lock each other. That is, the larger crushed stone particles restrict the movement of smaller crushed stone particles through their edges and rough surfaces. The frame of the grid unit 1221 can restrict the movement of the graded crushed stone 123, which is beneficial to further improve the stability of the construction road structure.

[0052] Specifically, the graded crushed stone 123 includes various crushed stones with different particle sizes. For example, the graded crushed stone 123 includes two crushed stones with different particle size ranges. The first type of crushed stone has a particle size range of 1cm to 2cm, and the second type of crushed stone has a particle size range of 3cm to 4cm. The mixing ratio of the first type of crushed stone to the second type of crushed stone is 1:1 (by weight). The graded crushed stone 123 after mixing has a network of interconnected pores. When water permeates into the grid unit 1221, it can seep down through the pores of the crushed stone or be discharged laterally. While taking into account the drainage effect of the construction road structure, it can also reduce the long-term erosion of water on the grid layer 122 material, extend the service life of the construction road structure, and facilitate the recycling of the grid layer 122.

[0053] It should be noted that crushed stone particles are usually irregular in shape. For irregular crushed stone particles, the above particle size should be understood as the equivalent value of particle size. For example, if an irregular particle is placed in a standard sieve and vibrated, the smallest sieve aperture size that the crushed stone particle can pass through is defined as the particle size.

[0054] refer to Figure 1 and Figure 2 In some embodiments, along a direction perpendicular to the soft soil foundation, the graded crushed stone 123 covers the side of the grid layer 122 closest to the bearing structure 110, that is, the height of the graded crushed stone 123 exceeds the height of the grid layer 122. When construction vehicles or equipment travel or operate on the road surface, the pressure is first applied to the graded crushed stone 123. Because the crushed stones of different sizes in the graded crushed stone 123 are interlocked and filled with each other, the pressure can be effectively dispersed, so that the pressure is evenly transmitted to the grid layer 122. This effectively avoids the members constituting the grid layer 122 from locally squeezing the isolation drainage layer 121, and thus effectively avoids the isolation drainage layer 121 from sinking due to local pressure, which is beneficial to further improve the stability of the construction road structure.

[0055] In addition, the graded crushed stone 123 layer can provide a smoother construction surface. The smoothness of the surface can be controlled by adjusting the particle size distribution and compaction process of the graded crushed stone 123. The smooth surface facilitates the laying of other materials in the future.

[0056] refer to Figure 1 and Figure 2 In some embodiments, the load-bearing structure 110 further includes a rubble layer 124. Along the direction perpendicular to the soft soil foundation, the rubble layer 124 is located between the load-bearing structure 110 and the isolation drainage layer 121. The rubble layer 124 includes multiple rubble stones, and the rubble stones form a rigid skeleton structure through point contact. When construction machinery or vehicle loads are applied to the surface of the rubble layer 124, the load is distributed over a wider range of stresses in the horizontal and vertical directions perpendicular to the soft soil foundation through the interlocking of the rubble stones. This helps to reduce the pressure exerted by the rubble layer 124 on the underlying structure, thereby maintaining the stability of the construction road structure.

[0057] Specifically, the rubble layer 124 comprises multiple rubble blocks, each with a particle size not exceeding 50cm. Furthermore, the weight percentage of rubble blocks with a particle size less than 30cm in the rubble layer 124 is less than 30%. Below the rubble layer 124, an isolation drainage layer 121, a grid layer 122, or graded crushed stone 123 can be attached. Taking the example of graded crushed stone 123 attached below the rubble layer 124, the graded crushed stone 123 covers the grid layer 122, and the upper side of the graded crushed stone 123 is attached to the rubble layer 124. When bearing load, the rubble layer 124 can disperse the load before transferring it to the graded crushed stone 123, resulting in a more uniform pressure distribution on the graded crushed stone 123. Thus, the graded crushed stone 123 can work in conjunction with the grid layer 122 to further disperse pressure, making the pressure applied to the isolation drainage layer 121 more uniform and the construction road structure more stable.

[0058] refer to Figure 1 and Figure 2 In other embodiments, multiple rubble blocks are stacked to form a rubble layer 124. The outer contour of the rubble blocks is irregular, and there are gaps between adjacent rubble blocks. The gaps are filled with gravel. When the rubble layer 124 bears an external load, the gravel can effectively fill the gaps between the rubble blocks and evenly distribute the load to all parts of the rubble layer 124, so that a denser structure is formed inside the rubble layer 124, which is beneficial to further improve the load-bearing capacity of the rubble layer 124.

[0059] refer to Figure 1 and Figure 2 In some embodiments, the load-bearing structure 110 includes a pavement layer 111 and a subbase layer 112. Along a direction perpendicular to the soft soil foundation, the subbase layer 112 is located between the pavement layer 111 and the load-distributing structure 120. One side of the subbase layer 112 is attached to the pavement layer 111, and the opposite side of the subbase layer 112 is attached to the load-distributing structure 120. The pavement layer 111 is configured to connect with adjacent pavement surfaces. The pavement layer 111 provides high compressive strength and stiffness to directly bear the loads of vehicles or construction equipment. The subbase layer 112 supports the pavement layer 111, effectively preventing brittle fracture of the pavement layer 111. The cooperation between the pavement layer 111 and the subbase layer 112 helps ensure the stability of the load-bearing structure 110.

[0060] Specifically, the subbase 112 is a semi-rigid structure made of cement, stone powder, slag, and other materials mixed and pressed together. It has both high compressive strength and flexural strength and is used to support the pavement layer 111 to ensure the stability of the pavement layer 111. The pavement layer 111 is a rigid structure made of plain concrete, which can provide greater rigidity to directly bear vehicles or construction equipment. The integrity of the rigid structure allows the pavement layer 111 to distribute local loads to the surrounding area, thereby improving the stability of the load-bearing structure 110.

[0061] It should be noted that, in order to ensure the support of the subbase 112 to the pavement layer 111, the ratio of the stiffness of the subbase 112 to the stiffness of the pavement layer 111 can be adaptively adjusted. For example, the ratio of the stiffness of the subbase 112 to the stiffness of the pavement layer 111 can range from 1 / 3 (inclusive) to 1 (exclusive).

[0062] refer to Figure 1 and Figure 2In other embodiments, the load-dispersing structure 120 includes an isolation drainage layer 121, a grid layer 122, graded crushed stone 123, and a rubble layer 124. The grid layer 122 is embedded in the graded crushed stone 123, and the graded crushed stone 123 fills each grid unit 1221 of the grid layer 122 and covers the grid layer 122, forming a composite layer. Along the direction perpendicular to the soft soil foundation, the rubble layer 124, the composite layer, and the isolation drainage layer 121 are arranged sequentially. The isolation drainage layer 121 is in contact with the soft soil base layer, the composite layer is located between the isolation drainage layer 121 and the rubble layer 124, and the subbase layer 112 is located between the pavement layer 111 and the rubble layer 124. The lower side of the subbase layer 112 is in contact with the rubble layer 124, and the upper side of the subbase layer 112 is in contact with the pavement layer 111. Through the cooperation between the layers, the construction road structure has both load-bearing capacity and load-dispersing capacity, and can provide more stable support.

[0063] refer to Figure 1 and Figure 2 In some embodiments, the lateral restraint body 210 includes a restraint plate 211 and at least two restraint piles 212 spaced apart along a second horizontal direction. Along a first horizontal direction, the restraint plate 211 is connected to the side of the restraint piles 212 near the bearing portion 100, and the restraint plate 211 is in contact with the bearing portion 100. Each restraint pile 212 is configured to be inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation. The first horizontal direction, the second horizontal direction, and the direction perpendicular to the soft soil foundation are mutually perpendicular. Each restraint pile 212 is used to fix the lateral restraint body 210. The restraint plate 211 is exposed outside the soft soil foundation to restrict the flow of the bearing portion 100 in all directions, making the bearing portion 100 more stable and thus ensuring the stability of the construction road structure.

[0064] Specifically, along the first horizontal direction, lateral restraint bodies 210 are arranged on both opposite sides of the bearing part 100. Each lateral restraint body 210 on either side of the bearing part 100 includes at least two restraint piles 212 arranged at intervals along the second direction. Each restraint pile 212 is configured to be inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation, and a portion of each restraint pile 212 is exposed outside the soft soil foundation. While ensuring the stability of the lateral restraint body 210, it provides an installation position for the restraint plate 211. The side of the restraint pile 212 exposed outside the soft soil foundation that is close to the bearing part 100 is connected to the restraint plate 211, and the restraint plate 211 is used to fit against the bearing part 100. On the one hand, the restraint plate 211 can restrict the bearing part 100 from moving to both sides along the first horizontal direction, ensuring the stability of the bearing part 100. On the other hand, the restraint plate 211 connects each restraint pile 212 in series, so that each restraint pile 212 cooperates to resist the tendency of the bearing part 100 to move to the side, making the overall construction road structure more stable.

[0065] It should be noted that the restraint pile 212 can be a pile body such as pine pile, channel steel, or sheet pile, and the restraint plate 211 can be a plate such as plywood or steel plate.

[0066] refer to Figure 1 and Figure 2 In some embodiments, the lateral restraint body 210 further includes a first connector 220 and at least two restraint piles 212 spaced apart along a second horizontal direction. Along the first horizontal direction, the first connector 220 is connected to the side of each restraint pile 212 away from the bearing part 100. Each restraint pile 212 is configured to be inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation. The first horizontal direction, the second horizontal direction, and the direction perpendicular to the soft soil foundation are mutually perpendicular. The first connector 220 is used to connect each restraint pile 212 in series to ensure that each restraint pile 212 can jointly restrict the movement of the bearing part 100 along the first horizontal direction. The force between each restraint pile 212 is more uniform. Moreover, the first connector 220 is located on the side of each restraint pile 212 away from the bearing part 100, which can avoid interfering with the arrangement of the bearing part 100.

[0067] refer to Figure 1 and Figure 2 In some embodiments, the lateral restraint body 210 further includes a second connector 230. Along the first horizontal direction, the second connector 230 passes through the bearing portion 100 and is connected to a first connector 220 on one side of the bearing portion 100. The other end of the second connector 230 is connected to the first connector 220 on the other side of the bearing portion 100, thereby connecting the two first connectors 220 on opposite sides of the bearing portion 100 in series. This allows the lateral restraint bodies 210 on opposite sides of the bearing portion 100 to pull each other, which is beneficial to further improve the stability of the construction road structure.

[0068] Specifically, along the first horizontal direction, lateral restraint bodies 210 are arranged on both opposite sides of the bearing portion 100. Each lateral restraint body 210 includes a first connector 220, a second connector 230, and at least two restraint piles 212. Taking the lateral restraint body 210 on one side of the bearing portion 100 as an example, each restraint pile 212 is inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation, and the restraint piles 212 are arranged at intervals along the second horizontal direction. The first connector 220 is connected to the side of each restraint pile 212 away from the bearing portion 100, and the second connector 230 extends along the first horizontal direction. The load-bearing part 100 includes a load-bearing structure 110 and a load-distributing structure 120 stacked from top to bottom. The second connector 230 can penetrate the load-bearing structure 110 or the load-distributing structure 120 to extend from one side of the load-bearing part 100 to the opposite side, thereby connecting the lateral restraint bodies 210 on opposite sides of the load-bearing part 100. Thus, when the load-bearing part 100 has a tendency to move towards either side, the lateral restraint bodies 210 on both sides of the load-bearing part 100 can jointly restrict the movement of the load-bearing part 100, thereby further improving the stability of the construction road structure.

[0069] refer to Figure 1 and Figure 2 In other embodiments, the load-bearing structure 110 includes a pavement layer 111 and a subbase layer 112, and the lateral restraint body 210 includes a connecting pipe. The subbase layer 112 can be cement stone powder slag. The connecting pipe is laid in the subbase layer along a first horizontal direction so that the cavity of the connecting pipe extends along the first horizontal direction. The cement stone powder slag can form a flatter paving surface and can better fit the connecting pipe. Thus, while taking into account the support stability of the subbase layer 112, it is convenient to insert the second connecting piece 230, making the construction of the road structure more convenient.

[0070] refer to Figure 1 and Figure 2 According to a construction method of this application, for constructing the construction road structure in any of the above embodiments, the specific steps of the construction method are as follows:

[0071] The soft soil foundation is drained and leveled. Two lateral restraint bodies 210 are driven into the soft soil foundation at intervals along the first horizontal direction. A bearing portion 100 is arranged between the two lateral restraint bodies 210, with each lateral restraint body 210 abutting one side of the bearing portion 100. Thus, by driving lateral restraint bodies 210 into the soft soil foundation and arranging the bearing portion 100 thereon, with the lateral restraint bodies 210 abutting the bearing portion 100, the structural stability of the bearing portion 100 is maintained. Therefore, the lateral restraint bodies 210, in conjunction with the bearing portion 100, can stably bear the load, eliminating the need for large-scale replacement of the soft soil area. This reduces earthwork volume and improves the efficiency of road construction.

[0072] refer to Figure 1 and Figure 2 In some embodiments, along a direction perpendicular to the soft soil foundation, an isolation drainage layer 121, a grid layer 122, graded crushed stone 123, a rubble layer 124, a subbase layer 112, and a road surface layer 111 are laid sequentially on the soft soil foundation to form a load-bearing part 100. The isolation drainage layer 121, the grid layer 122, the graded crushed stone 123, and the rubble layer 124 constitute a load-dispersing structure 120 to disperse the load. The subbase layer 112 and the road surface layer 111 constitute a load-bearing structure 110 to directly support the loads of vehicles or construction equipment. By setting up a multi-layer load-bearing structure, it is possible to ensure that the load pressure is dispersed downwards step by step on the basis of stable bearing of the load-bearing part 100, so as to avoid local subsidence of the construction road structure.

[0073] refer to Figure 1 and Figure 2 In some embodiments, after the support portion 100 is arranged, the lateral constraint bodies 210 on both sides of the support portion 100 are connected so that when the support portion 100 tends to move to both sides, the lateral constraint bodies 210 on both sides can jointly support the support portion 100, thereby further improving the stability of the support portion 100.

[0074] refer to Figure 1 and Figure 2 According to the construction method of the above embodiments, specifically, the construction method of this application includes the following steps performed in sequence: drainage and leveling, piling and enclosing, covering with cloth and filling with stone, and laying pipes. The steps are further described below:

[0075] Drainage and leveling: The top of the soft soil foundation is drained of the accumulated water and the site is leveled. This involves filling and excavating the low-lying areas and high-pressure areas of the soft soil to make the site flat.

[0076] Piling and enclosure: Measure and lay out lines on both sides of the road to form side lines that are spaced apart along the first horizontal direction and extended along the second horizontal direction. Drive multiple constraint piles 212 into the soft soil foundation along the side lines of the road to form two rows of constraint piles 212, such that on any road side line, each constraint pile 212 is spaced apart along the second horizontal direction. Connect constraint plates 211 along the first horizontal direction on the side where the two rows of constraint piles 212 face each other.

[0077] The lateral restraint body 210 includes a restraint plate 211 and multiple restraint piles 212. The restraint plate 211 can be plywood with a thickness of 1.2cm to 1.8cm. The restraint plate 211 can be fixed to the restraint piles 212 with steel nails. The restraint piles 212 can be pine piles with one end sharpened. The pine piles are straight and free from defects such as knots, cracks, insect infestation, and rot. The pine piles are carbonized after peeling.

[0078] When driving pine piles, a tracked pile driver is used to clamp the pine piles and press the tip of the pine pile into the soft soil foundation in a direction perpendicular to the soft soil foundation. The verticality tolerance of the pine piles is less than 1%. During pile driving, the driving speed is slowed down after the tip of the pine pile penetrates the soft soil and enters the stable bearing layer, until the height of the pine pile exposed in the soft soil foundation is 1m. The diameter of the pine pile is 12cm to 15cm, and the length of the pine pile is 3m to 5m. The interval between two adjacent pine piles in the same row is 0.5m to 0.8m. The length of the pine piles and the driving interval can be adjusted according to the state of the soft soil foundation. When the soft soil foundation is in a fluid plastic state to a soft plastic state, the length of the pine piles and the interval between two adjacent pine piles are taken to the maximum value. When the soft soil foundation is in a soft plastic state to a plastic state, the length of the pine piles and the interval between two adjacent pine piles are taken to the minimum value.

[0079] It should be noted that the width direction of the road is the first horizontal direction, and the length direction of the road is the second horizontal direction.

[0080] Covering with geotextile and filling with stone: Geotextile is laid on the soft soil foundation between the two sides of the constraint body 210 to form an isolation and drainage layer 121, and double-layered spaced rods are laid on the isolation and drainage layer 121 to form a grid layer 122. The grid layer 122 has multiple grid units. After the grid layer 122 is formed, graded crushed stone 123 is backfilled to fill the grid units 1221 until the graded crushed stone 123 covers the grid layer 122. Then, rubble blocks are backfilled on the graded crushed stone 123 to form a rubble layer 124.

[0081] Before laying the geotextile, sharp objects such as pile heads, stones, etc., should be removed to avoid puncturing the geotextile. The geotextile should be laid flat and taut to avoid wrinkles. The width of the geotextile should be greater than or equal to the spacing of the pine piles on both sides of the road. The weight of the geotextile should be greater than or equal to 300g / m2. The tensile strength should be greater than or equal to 60kN / m. The tear strength (the ability of a material to resist tearing) should be greater than or equal to 0.42kN. The grid layer 122 is made of double-layered round wooden poles. The multiple round wooden poles of the first pole group are spaced along the first horizontal direction. The second group of round wooden poles is arranged at intervals along the second horizontal direction. The round wooden poles can be made of pine, eucalyptus, etc., and the diameter of the round wooden poles is 12cm to 15cm. The spacing between two adjacent round wooden poles in the same layer is 0.6m to 1m. When the soft soil foundation is in a fluid plastic state to a soft plastic state, the spacing between two adjacent round wooden poles in the same layer is taken as the larger value. When the soft soil is in a soft plastic state to a plastic state, the spacing between two adjacent round wooden poles in the same layer is taken as the smaller value. The intersection points of the round wooden poles in the upper and lower layers are tied with steel wire.

[0082] In addition, positioning stakes 130 can be installed before laying the grid layer 122. The positioning stakes 130 can be made of thin bamboo poles or small wooden stakes, and the interval between two adjacent positioning stakes 130 can be 2m to 3m. The positioning stakes 130 are used to position the grid layer 122 for laying. The graded crushed stone 123 includes particles with a particle size of 1cm to 2cm and particles with a particle size of 3cm to 4cm, and the mixing ratio of the two is 1:1. The graded crushed stone 123 extends ≥10cm above the top of the grid layer 122. For example, the laying thickness of the graded crushed stone 123 can be 300mm.

[0083] When backfilling rubble, if there are gaps between the rubble blocks, crushed stone is used to fill them. The height of the backfill rubble layer 124 is 10cm from the top of the restraint pile 212. The rubble blocks are fresh, hard rocks with a maximum particle size of ≤50cm, and the proportion of rubble blocks with a particle size of less than 30cm is ≥30%. The thickness of the rubble layer 124 can be 500mm.

[0084] Pipe backfilling: A portion of cement stone powder residue is backfilled on the rubble layer 124, and connecting pipes are arranged on the cement stone powder residue. Then, cement stone powder residue is backfilled to form the subbase 112. Plain concrete is poured on the subbase 112 to form the pavement layer 111.

[0085] After the cement-stone powder slag stabilized layer is laid, it is compacted with 15-ton pressure for 8-10 passes until the compaction coefficient λc ≥ 0.92. The thickness of the subbase 112 can be 200mm, and the cement-stone powder content in the subbase 112 can be 6%. The pavement layer 111 adopts a plain concrete structure with a concrete grade of C20. The thickness of the pavement layer 111 is 100mm to 150mm. The concrete should be finished with a rough surface, and an expansion joint needs to be cut on the side of the pavement layer 111 away from the subbase 112. The two adjacent expansion joints are spaced 6 meters apart along the length of the road (second horizontal direction). The plain concrete is poured and vibrated to ensure compaction. After pouring, it is watered and cured until the required strength is reached.

[0086] In addition, after the pavement layer 111 is poured and formed, a second connector 230 is inserted into the cavity of the connecting pipe to connect the two lateral restraint bodies 210. Specifically, a first connector 220 (waler) is installed on the periphery of the restraint pile 212 on the side away from the bearing part 100, and the second connector 230 is inserted into the cavity of the connecting pipe to connect the first connectors 220 located on both sides of the bearing part 100.

[0087] The first connector 220 can be made of 100mm square steel and is tied firmly to the restraint pile 212 with steel wire at 1m intervals. Multiple connectors can be arranged along the second horizontal direction with an interval of 3m between adjacent connectors. Multiple second connectors 230 can be arranged with an interval of 3m between adjacent second connectors 230 along the second horizontal direction. The second connector 230 can be made of Φ48×3.5mm steel pipe made of Φ20 round steel bar. The first connector 220 and the second connector 230 can be connected by threads.

[0088] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A construction road structure, characterized in that, include: The load-bearing part includes a load-bearing structure and a load-distributing structure arranged perpendicular to the soft soil base layer, wherein the surface of the load-bearing structure away from the soft soil base layer is configured to connect with the adjacent road surface, and the surface of the load-distributing structure close to the soft soil base layer is configured to adhere to the soft soil base layer. The load-dispersing structure includes a first rod group and a second rod group arranged in layers. The first rod group is arranged on the side of the second rod group close to the soft soil foundation. The first rod group includes a plurality of first rods spaced apart along a first horizontal direction and extending along a second horizontal direction. The second rod group includes a plurality of second rods spaced apart along the second horizontal direction. The second rods are arranged perpendicular to the first rods. The first rods are provided with sliding buckles, and the second rods pass through the sliding buckles. Along the second horizontal direction, the first rods and the second rods are slidably connected. The load-dispersing structure also includes a fiber interwoven body, which comprises multiple interconnected fiber mesh units. Adjacent fiber mesh units are movably connected. The fiber interwoven body is arranged on the side of the first rod group near the soft soil foundation. The first horizontal direction, the second horizontal direction, and the vertical direction of the soft soil foundation are mutually perpendicular. The constraint portion includes at least two lateral constraint bodies, which are arranged on opposite sides of the bearing portion in a direction parallel to the soft soil foundation and are attached to the bearing portion. A portion of each lateral constraint body is configured to be inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation.

2. The construction road structure according to claim 1, characterized in that, Along a direction perpendicular to the soft soil foundation, the load-dispersing structure has an isolation drainage layer on the side opposite to the load-bearing structure. The isolation drainage layer includes the fiber interwoven body and is configured to adhere to the soft soil foundation.

3. The construction road structure according to claim 2, characterized in that, The load-dispersing structure also includes a grid layer. Along a direction perpendicular to the soft soil foundation, the grid layer is located on the side of the isolation drainage layer closer to the load-bearing structure. The grid layer includes a first rod group and a second rod group, with the first rod group being arranged in close contact with the isolation drainage layer.

4. The construction road structure according to claim 3, characterized in that, The grid layer includes multiple grid units, and the load-distributing structure also includes graded crushed stone, with the graded crushed stone filling the grid units.

5. The construction road structure according to claim 4, characterized in that, Along a direction perpendicular to the soft soil foundation, the graded crushed stone covers the grid layer on the side near the load-bearing structure.

6. The construction road structure according to any one of claims 2 to 5, characterized in that, The load-bearing structure also includes a rubble layer, which is located between the load-bearing structure and the isolation drainage layer along a direction perpendicular to the soft soil foundation.

7. The construction road structure according to claim 1, characterized in that, The load-bearing structure includes a pavement layer and a subbase layer. Along a direction perpendicular to the soft soil foundation, the subbase layer is located between the pavement layer and the load-distributing structure. One side of the subbase layer is in contact with the pavement layer, and the opposite side of the subbase layer is in contact with the load-distributing structure. The pavement layer is configured to connect with the adjacent pavement.

8. The construction road structure according to claim 1, characterized in that, The lateral restraint body includes a restraint plate and at least two restraint piles spaced apart along the second horizontal direction. Along the first horizontal direction, the restraint plate is connected to the side of the restraint piles near the bearing portion and fits against the bearing portion. Each of the restraint piles is configured to be inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation.

9. The construction road structure according to claim 1, characterized in that, The lateral restraint body further includes a first connector and at least two restraint piles spaced apart along the second horizontal direction. Along the first horizontal direction, the first connector is connected to the side of each restraint pile away from the bearing portion, and each restraint pile is configured to be inserted into the soft soil foundation in a direction perpendicular to the soft soil foundation.

10. The construction road structure according to claim 9, characterized in that, The lateral constraint body further includes a second connector, which extends through the bearing portion along the first horizontal direction. One end of the second connector is connected to the first connector on one side of the bearing portion, and the other end of the second connector is connected to the first connector on the other side of the bearing portion.

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