Novel composite geogrid for roadbed reinforcement in saline soil environment

Abstract

The utility model discloses a novel composite geogrid for roadbed reinforcement in a salinized soil environment, and relates to the related technical field of civil construction. The middle rib frame comprises a middle rib frame, a center node block, a node absorption layer, an outer connecting rib frame and a friction assembly, the center node block is fixed to the center of the middle rib frame, the middle rib frame comprises a protection layer and a tension layer, and six protection strips are fixed to the peripheral side of the center node block in an annular array mode. The end, away from the center node block, of each protection strip is connected with a node absorption layer, an outer connecting rib frame is jointly connected between every two adjacent node absorption layers, and friction assemblies are fixed to the side faces of the outer connecting rib frames at equal intervals. The reinforced middle rib frame, the central node block, the node absorbing layer, the outer connecting rib frame and the friction assembly are arranged, so that the problems that the absorption of the impact energy of the geogrid to a roadbed after the roadbed construction is completed is not high enough, and the mutual combination tightness and friction degree of the upper roadbed material and the lower roadbed material of the geogrid are not high enough are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to civil construction, and particularly relates to a new composite geogrid for reinforcing a roadbed in a saline soil environment. Background Art

[0002] Geosynthetics are one of the most widely used man-made materials in the world and are also an important contributor to national economic growth. At present, my country has become the country with the fastest growth in the use of geosynthetics. It is widely used in infrastructure projects, roads, water conservancy, industry, civil buildings, hydraulic structures and various structures used in marine development. During construction, geogrids can strengthen the ground layer, enhance the foundation strength and the bonding degree of granular materials, and prevent uneven settlement. However, it still has the following disadvantages in actual use:

[0003] After the geogrid is constructed on the road surface, vehicles passing by on the ground will impact the roadbed. When the geogrid is working, it provides impact absorption through lateral tension. When it is working, the deformation of the ground is large, which is easy to form cracks on the road surface and cause road surface damage.

[0004] After the construction of the pavement is completed, the geogrid only restrains the lower roadbed materials to increase the stability of the roadbed. However, the roadbed materials above and below the geogrid are directly separated by the geogrid, which makes the roadbed materials easy to loosen and the tightness of the combination is not high enough. Utility Model Content

[0005] The utility model aims to provide a new composite geogrid for roadbed reinforcement in a saline soil environment. By arranging a reinforced middle rib frame, a central node block, a node absorption layer, an external connection frame and a friction component, the utility model solves the problems that the geogrid does not absorb enough energy from the impact of the road surface after the road surface construction is completed, the fit between the upper and lower roadbed materials of the grid paving layer is not enough, and the friction coefficient of the roadbed is not high.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a novel composite geogrid for reinforcing roadbed in a saline soil environment, comprising a central rib rib frame, a central node block, a node absorption layer, an external connection rib frame and a friction component, wherein the center of the central rib rib frame is connected to the central node block, the central rib rib frame comprises a protection strip and a tension layer, six protection strips are fixed in a circular array on the circumference of the central node block, one end of each protection strip away from the central node block is connected to the node absorption layer, adjacent node absorption layers are commonly connected to an external connection rib frame, and friction components are fixed to both sides of the external connection rib frame at equal intervals. When working, the strength of the grid is increased by the central rib rib frame, the tension layers in the protection strips are connected together by the central node block to increase the strength of the grid, the impact generated on the roadbed is absorbed by the variable of the node absorption layer, and the impact generated on the roadbed is further absorbed by the external connection rib frame, and the bonding degree between the upper and lower layers of roadbed materials is further increased by the friction component.

[0008] Furthermore, the central rib frame also includes support bars and tension layers. Each of the protection bars has a tension layer. Adjacent protection bars are commonly connected with support bars. The support bars are connected to the peripheral side of the central node block in a ring array, and the support strength between adjacent protection bars is increased by the support bars.

[0009] Furthermore, a connection block is fixed to the top of the central node block, and a pin is fixed to the center of the bottom end of the central node block. The central node block provides a downward pressure point through the connection block.

[0010] Furthermore, a top plate layer is fixed on the top of each node absorption layer, a buffer block is fixed in the node absorption layer, and one end of the tension layer away from the central node block is connected to the peripheral side of the node absorption layer. The node absorption layer provides impact transmission to the absorption shell through the top plate, and the impact on the absorption shell is transmitted to the buffer block.

[0011] Furthermore, a double-layer buffer strip is fixed inside the external connection reinforcement frame, and the double-layer buffer strip is enclosed in the external connection reinforcement frame. The external connection reinforcement frame buffers the impact generated on the roadbed through the double-layer buffer strip.

[0012] Furthermore, the friction assembly includes a fixed column, a fixed block and a triangular block, the fixed column is connected to the side of the external connecting rib frame, the end of the fixed column away from the external connecting sleeve is connected to the fixed block, the top and bottom of the fixed block are fixed with triangular blocks, the triangular blocks at the top and bottom of the fixed block are symmetrical to each other, the fixed block is fixed to the external connecting sleeve by the fixed column, and the fixed block is more firmly arranged together by adding upper and lower layers of roadbed materials through the triangular blocks.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem that the geogrid does not absorb the impact of the road surface sufficiently after the construction of the road surface is completed by arranging a central rib frame, a central node block, a node absorption layer and an external connection frame. The impact generated by driving on the roadbed is transmitted to the node absorption layer and the external connection frame sleeve, and is buffered by the buffer block in the absorption layer, and absorbed by the double-layer buffer strips in the external connection frame. The strength of the grid is ensured by the support strips in the protective strips on the outside of the central node block, so that the impact on the roadbed is greatly absorbed during operation, the damage to the tensile layer of the geotechnical material is reduced, and the roadbed is strengthened at the same time.

[0015] The utility model solves the problem that the geogrid has insufficient tightness in the mutual connection between the upper and lower roadbed materials after the road surface construction is completed by arranging an external connecting rib frame and a friction component. When the upper and lower layers of roadbed materials cover each other, the two upper and lower symmetrical triangular blocks on the fixed block are embedded in the roadbed, making the embedding between the upper and lower roadbeds of the geogrid more firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of the assembly structure of a new composite geogrid for roadbed reinforcement in saline soil environment;

[0017] Figure 2 It is a three-dimensional diagram of the middle rib frame structure;

[0018] Figure 3 It is a three-dimensional diagram of the central node block structure;

[0019] Figure 4 It is a three-dimensional diagram of the cross-sectional structure of the node absorption layer;

[0020] Figure 5 This is a three-dimensional diagram of the half-section structure of the external connection reinforcement frame;

[0021] Figure 6 It is a three-dimensional diagram of the friction component structure;

[0022] Figure 7 It is a three-dimensional diagram of the combined structure of two center rib frames and remaining components.

[0023] Reference numerals:

[0024] 1. Middle rib rib frame; 101. Protection strip; 102. Support strip; 103. Tensile layer; 2. Center node block; 201. Pin; 202. Connection block; 3. Node absorption layer; 301. Buffer block; 302. Top plate layer; 4. External connection rib frame; 401. Double-layer buffer strip; 5. Friction assembly; 501. Fixed column; 502. Fixed block; 503. Triangular block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiments

[0026] See also Figure 1-7 The utility model is a new composite geogrid for roadbed reinforcement in a saline soil environment, comprising a middle rib reinforcement frame 1, a central node block 2, a node absorption layer 3, an external connection rib frame 4 and a friction assembly 5. The center of the middle rib reinforcement frame 1 is connected with a central node block 2, the middle rib reinforcement frame 1 increases the strength of the grid, and the protection strips 101 on the reinforcement frame 1 are connected together through the central node block 2. The middle rib reinforcement frame 1 includes a protection strip 101, and six protection strips 101 are fixed on the peripheral side of the central node block 2 in an annular array. The protection strip 101 connects the central node block 2 and the node absorption layer 3 together. Each protection strip The end of the strip 101 away from the central node block 2 is connected to a node absorption layer 3, which absorbs the impact generated on the roadbed and buffers it through the buffer block 301 therein. The adjacent node absorption layers 3 are commonly connected with an external connecting rib frame 4, which fixes the double-layer buffer strip 401 therein. The two sides of the external connecting rib frame 4 are evenly spaced and connected with friction components 5. The friction components 5 hold the roadbed materials above and below the middle rib frame 1 together, and the protection strip 101 and the external connecting rib frame 4 will prevent the tensile layer 103 and the double-layer buffer strip 401 from being corroded by saline soil.

[0027] Specifically, the central rib frame 1 also includes a support bar 102 and a tension layer 103. The adjacent protective bars 101 are commonly connected with the support bar 102. The tension layer 103 is arranged inside the protective bar 101. The support bars 102 are connected to the peripheral side of the central node block 2 in a ring array. The protective bar 101 is fixed therein through the internal tension layer 103, thereby increasing the connection strength between the central node block 2 and the node absorption layer 3, and increasing the connection strength between the protective bars 101 through the support bar 102.

[0028] Furthermore, a connecting block 202 is fixed to the top of the central node block 2, and a pin 201 is fixed to the center of the bottom end of the central node block 2. The central node block 2 is provided with a force when it is pressed down through the connecting block 202, and the central node block 2 is fixed on the road base surface when the pin 201 is inserted into the ground.

[0029] Furthermore, a top plate layer 302 is fixed on the top of each node absorption layer 3, a buffer block 301 is fixed inside the node absorption layer 3, and one end of the tension layer 103 away from the central node block 2 is connected to the peripheral side of the node absorption layer 3. The node absorption layer 3 absorbs the impact generated on the roadbed through the top plate layer 302, and buffers the impact through the buffer block 301 therein.

[0030] Furthermore, a double-layer buffer strip 401 is fixed inside the external connecting rib frame 4, and the double-layer buffer strip 401 is enclosed in the external connecting rib frame 4. The external connecting rib frame 4 and the double-layer buffer strip 401 form a multi-layer composite arrangement for buffering. The external connecting rib frame 4 fixes the double-layer buffer strip 401 therein, and absorbs the impact generated on the road surface through the double-layer buffer strip 401 and the node absorption layer 3.

[0031] The operation process of this embodiment is as follows: during operation, when the grille is laid as a whole, the grille is laid flat on the ground. After laying, the central node block 2 is pressed so that the pins 201 at the bottom of the central node block 2 are inserted into the ground, so that the grille is restricted on the ground, and then buried. After burying, the impact generated by driving on the roadbed is transmitted to the node absorption layer 3 and the external connection reinforcement frame 4, and is buffered by the buffer block 301 in the node absorption layer 3, and absorbed by the double-layer buffer strip 401 in the external connection reinforcement frame 4, and the strength of the grille is ensured by the tensile layer 103 in the protective strip 101 on the outside of the central node block 2, so that during operation, the impact on the roadbed is greatly absorbed, reducing damage to the grille and strengthening the roadbed at the same time. Specific embodiments

[0032] See also Figure 1 , 6 On the basis of the specific embodiment 1, the friction assembly 5 includes a fixed column 501, a fixed block 502 and a triangular block 503. The fixed column 501 is connected to the side of the external connecting rib frame 4. The fixed block 502 is fixed to the end of the fixed column 501 away from the external connecting rib frame 4. The top and bottom of the fixed block 502 are fixed with triangular blocks 503. The triangular blocks 503 at the top and bottom of the fixed block 502 are symmetrical to each other. The fixed block 502 is connected to the external connecting rib frame 4 through the fixed column 501, and the two upper and lower symmetrical triangular blocks 503 on the fixed block 502 are embedded in the roadbed, so that when working, when the upper and lower layers of roadbed materials cover each other, the embedding between the upper and lower roadbeds of the grille is tighter.

[0033] The operation process of this embodiment is as follows: after the upper and lower layers of roadbed materials cover each other, the two vertically symmetrical triangular blocks 503 on the fixing block 502 are embedded in the roadbed, so that the embedding between the upper and lower roadbeds of the grid is more tightened.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel composite geogrid for roadbed reinforcement in a saline soil environment, comprising a central rib frame (1), a central node block (2), a node absorption layer (3), an external connection frame (4) and a friction assembly (5), characterized in that: The center of the central rib rib frame (1) is provided with a central node block (2), and the central rib rib frame (1) comprises a protective strip (101) and a tension layer (103). Six protective strips (101) are fixed in a circular array around the central node block (2), and one end of each protective strip (101) away from the central node block (2) is connected to a node absorption layer (3). Adjacent node absorption layers (3) are commonly connected to an external connection rib frame (4), and friction components (5) are fixed to both side surfaces of the external connection rib frame (4) at equal intervals.

2. The novel composite geogrid for roadbed reinforcement in saline soil environment according to claim 1, characterized in that: The central rib frame (1) further comprises a support bar (102) and a tension layer (103), each of the protection bars (101) has a tension layer (103), adjacent protection bars (101) are commonly connected with a support bar (102), and the support bars (102) are connected to the peripheral side of the central node block (2) in a ring array.

3. The novel composite geogrid for roadbed reinforcement in saline soil environment according to claim 1, characterized in that: A connection block (202) is fixed to the top of the central node block (2), and a pin (201) is fixed to the center of the bottom of the central node block (2).

4. The novel composite geogrid for roadbed reinforcement in saline soil environment according to claim 2, characterized in that: The top of each node absorption layer (3) is connected to a top plate layer (302), a buffer block (301) is fixed inside the node absorption layer (3), and one end of the tension layer (103) away from the central node block (2) is connected to the peripheral side of the node absorption layer (3).

5. The novel composite geogrid for roadbed reinforcement in saline soil environment according to claim 1, characterized in that: A double-layer buffer strip (401) is fixed inside the external connection rib frame (4), and the double-layer buffer strip (401) is enclosed inside the external connection rib frame (4).

6. The novel composite geogrid for roadbed reinforcement in saline soil environment according to claim 1, characterized in that: The friction assembly (5) comprises a fixed column (501), a fixed block (502) and a triangular block (503); the fixed column (501) is fixed to a side surface of the external connection rib frame (4); the fixed block (502) is fixed to one end of the fixed column (501) away from the external connection rib frame (4); the triangular blocks (503) are fixed to the top and bottom of the fixed block (502); and the triangular blocks (503) at the top and bottom of the fixed block (502) are symmetrical to each other.

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