Roadbed joint structure for non-uniform settlement of reconstructed and expanded road

Abstract

The utility model discloses a roadbed joint structure for non-uniform settlement of a reconstructed and expanded road, which relates to the technical field of road engineering, is mounted at the joint of an old roadbed and a new roadbed, and comprises a plurality of groups of fixing parts distributed and mounted at the joint of the old roadbed and the new roadbed; the supporting part is mounted in a new roadbed; the supporting part is provided with a triangular supporting frame and a cross beam; the plurality of groups of triangular support frames are adjacently distributed to form a zigzag structure; a plurality of groups of cross beams are distributed between the adjacent triangular support frames and in the triangular support frames at intervals; gaps of the new roadbed are filled and compacted by a soil material; according to the structure, the junction of the old roadbed and the new roadbed is reinforced through the fixing part, meanwhile, the new roadbed is supported through the supporting part, the supporting part can relieve force from the up-down direction and the left-right direction, tension fracture and damage are further prevented, the situation that the old road and the new road are fractured during settlement, and consequently the use danger is increased is avoided, and the road safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road engineering, in particular to a roadbed joint structure for uneven settlement of a rebuilt and expanded road. Background Art

[0002] With the development of social economy, the original roads can no longer meet the needs of existing traffic volume. Therefore, on the basis of existing roads, road expansion and reconstruction are carried out to increase their traffic capacity. When carrying out road expansion and reconstruction, roadbed treatment becomes a key and difficult point. Roadbed is the foundation of the road. Especially when facing expansion or reconstruction, roadbed treatment faces great challenges.

[0003] After the roadbed expansion, the settlement of the old roadbed has been basically stabilized, while the consolidation settlement of the new roadbed has not yet been completed. Under the action of its own weight and vehicle load, the new roadbed is bound to produce additional settlement, resulting in uneven settlement of the new and old roadbeds. In addition, the strength of the junction between the new and old roadbeds is relatively weak, and the additional stress on the top surface of the foundation is unevenly distributed in the transverse direction, resulting in insufficient lateral constraint and horizontal displacement. If the horizontal displacement is too large, it will cause tensile damage. At the same time, the vertical deformation caused by uneven settlement will also induce an increase in the tensile stress at the junction of the new and old roadbeds. Therefore, with the occurrence of uneven settlement of the new and old roadbeds, the tensile stress at the junction of the new and old roadbeds increases accordingly, until sliding damage along the junction surface, causing cracks, damage, slope differences and other damage to the road surface, thereby endangering driving safety and reducing the service life of the road.

[0004] Therefore, in response to the corresponding problems existing in the new and old roadbeds after the expansion of the existing roadbed, a device is designed to optimize the structure and reinforce the junction of the new and old roadbeds to prevent the old and new roads from breaking when they settle, which increases the risk of use and further improves road safety. Utility Model Content

[0005] The utility model aims to provide a roadbed joint structure for uneven settlement of the expanded and rebuilt road, which is structurally optimized and reinforced at the junction of the new and old roadbeds to prevent the old and new roads from breaking when they settle and increasing the danger of use, and further improve the road safety.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A roadbed joint structure for uneven settlement of a road to be rebuilt or expanded, the joint structure is installed at the connection between an old roadbed and a new roadbed, comprising:

[0008] A plurality of fixing parts are installed at the joints between the old roadbed and the new roadbed;

[0009] A support portion, wherein the support portion is installed in the new roadbed;

[0010] The support portion comprises a triangular support frame and a crossbeam;

[0011] A plurality of groups of the triangular support frames are adjacently distributed to form a sawtooth structure;

[0012] There are multiple groups of cross beams spaced apart between adjacent triangular support frames and inside the triangular support frames;

[0013] The gaps in the new roadbed are filled and compacted with soil materials.

[0014] Further, the fixing portion has an integrally formed reinforced fixing plate, a fixing tip and a barb;

[0015] The two ends of the reinforced fixing plate are vertically extended with fixing tips;

[0016] The fixed tip extends outward to form a barb;

[0017] The barb forms an angle a with the outer side wall of the fixed tip, 0°≤a≤90°;

[0018] The reinforced fixing plate covers the joint between the old roadbed and the new roadbed;

[0019] The fixing tip, the barb and part of the reinforced fixing plate extend to the inside of the old roadbed and the new roadbed.

[0020] Further, the reinforced fixing plate is partially located on the upper surface of the old roadbed and the new roadbed;

[0021] The upper surfaces of the old roadbed and the new roadbed are paved with a compacted layer;

[0022] The compacted layer fills the grooves formed by the reinforced fixing plate and the old roadbed and the new roadbed;

[0023] A steel-plastic grid is laid above the compacted layer;

[0024] Compacted soil is laid on the steel-plastic grid.

[0025] Furthermore, the cement content in the compacted layer is 7% of the entire soil layer;

[0026] The thickness of the compacted layer is 20cm-30cm.

[0027] Furthermore, the tensile strength of the steel-plastic grating is greater than 80KN / m.

[0028] Furthermore, the soil material is coarse-grained soil or rocky soil.

[0029] In the above technical solution, the roadbed joint structure for uneven settlement of the road reconstruction and expansion of the utility model has the following beneficial effects:

[0030] The utility model designs a roadbed joint structure for uneven settlement of a rebuilt and expanded road. The junction between the old roadbed and the new roadbed is reinforced by a fixing part, and the new roadbed is supported by a supporting part. The supporting part can alleviate the forces from the top and bottom and the left and right, further preventing tearing and damage, avoiding the increase of use risk caused by the breakage of the old road and the new road when they settle, and improving road safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0032] Figure 1 A schematic diagram of a roadbed joint structure for uneven settlement of a road reconstruction and expansion provided by an embodiment of the utility model;

[0033] Figure 2 A schematic cross-sectional structure diagram of a roadbed joint structure for uneven settlement of a road reconstruction and expansion provided in an embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Old roadbed; 2. New roadbed; 3. Fixed part; 4. Support part; 5. Compacted layer; 6. Steel-plastic grid; 7. Compacted soil;

[0036] 31. Reinforced fixing plate; 32. Fixed tip; 33. Barb;

[0037] 41. Triangular support frame; 42. Crossbeam. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] It should be noted that the terms "on", "above", "inside", "upper surface", etc. used in this article to indicate the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Similar expressions are only for the purpose of illustration, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] See also Figure 1-Figure 2 As shown;

[0041] A roadbed joint structure for uneven settlement of a rebuilt and expanded road, the joint structure is installed at the connection between an old roadbed 1 and a new roadbed 2, comprising:

[0042] The fixing parts 3 are installed at the joints between the old roadbed 1 and the new roadbed 2.

[0043] A support part 4, the support part 4 is installed in the new roadbed 2;

[0044] The support part 4 has a triangular support frame 41 and a crossbeam 42;

[0045] Multiple sets of triangular support frames 41 are adjacently distributed to form a sawtooth structure;

[0046] There are multiple groups of cross beams 42 spaced apart between adjacent triangular support frames 41 and inside the triangular support frames 41;

[0047] The gaps in the new roadbed 2 are filled and compacted with soil materials.

[0048] Specifically, a roadbed joint structure for uneven settlement of a road reconstruction and expansion is used to connect the joint of an old roadbed 1 and a new roadbed 2 (see Figure 2 ) The upper end planes of the old roadbed 1 and the new roadbed 2 after being connected are flush, and a fixing part 3 is installed at the joint. The fixing part 3 is inserted into the old roadbed 1 and the new roadbed 2 to avoid cracking at the joint between the old roadbed 1 and the new roadbed 2. At the same time, a support part 4 is arranged in the new roadbed 2. The support part 4 has a triangular support frame 41 and a crossbeam 42. If multiple groups of triangular support frames 41 are distributed adjacent to each other, the sides of adjacent triangular support frames 41 will form an inverted triangle structure, and the triangular structure is relatively stable. A crossbeam 42 is installed between the adjacent sides of the triangular support frames 41. The triangular support frames 41 are reinforced by the crossbeam 42, so that the support part 4 has stronger stability as a whole and can withstand stresses in all directions. At the same time, the gaps in the new roadbed 2 are filled and compacted with soil materials to make the new roadbed 2 more stable and avoid settlement of the new road.

[0049] The fixing portion 3 has an integrally formed reinforced fixing plate 31, a fixing tip 32 and a barb 33;

[0050] The two ends of the reinforced fixing plate 31 are vertically extended with fixing tips 32;

[0051] The fixed tip 32 extends outward to form a barb 33;

[0052] The barb 33 forms an angle a with the outer side wall of the fixing tip 32, 0°≤a≤90°;

[0053] The reinforced fixing plate 31 covers the joint between the old roadbed 1 and the new roadbed 2;

[0054] The fixing tip 32 , the barb 33 and a part of the reinforced fixing plate 31 extend to the inside of the old roadbed 1 and the new roadbed 2 .

[0055] Specifically, the fixing part 3 is a connecting piece between the old roadbed 1 and the new roadbed 2, and is reinforced at the joint between the old roadbed 1 and the new roadbed 2. The fixing part 3 is similar to the state of a stapler before use, and the fixing part 3 opens downward. The two side walls, namely the fixing tips 32, are respectively inserted into the old roadbed 1 and the new roadbed 2, and the reinforced fixing plate 31 covers the joint between the old roadbed 1 and the new roadbed 2, thereby bringing the joint between the old roadbed 1 and the new roadbed 2 closer to each other and fixing them, wherein the lower end parts of the fixing tips 32 located in the old roadbed 1 and the new roadbed 2 respectively extend a section of barb 33 outward, and the barb 33 forms a hooking state with the roadbed. When the old roadbed 1 and the new roadbed 2 vibrate or deflect, the fixing part 3 can also be stably installed at the joint through the barb 33 to avoid tearing and damage at the joint, further ensuring the connection between the old roadbed 1 and the new roadbed 2 and improving road safety.

[0056] The reinforced fixing plate 31 is partially located on the upper surface of the old roadbed 1 and the new roadbed 2;

[0057] A compaction layer 5 is laid on the upper surface of the old roadbed 1 and the new roadbed 2;

[0058] The compacted layer 5 fills the groove formed by the reinforced fixing plate 31 and the old roadbed 1 and the new roadbed 2;

[0059] A steel-plastic grid 6 is laid on top of the compacted layer 5;

[0060] Compacted soil 7 is laid on the steel-plastic grid 6 .

[0061] The cement content in the compacted layer 5 is 7% of the entire soil layer;

[0062] The thickness of the compacted layer 5 is 20 cm to 30 cm.

[0063] The tensile strength of the steel-plastic grating 6 is greater than 80KN / m.

[0064] Specifically, the compacted layer 5 fills the grooves formed between the reinforced fixing plate 31 and the old roadbed 1 and the new roadbed 2, and then the steel-plastic grid 6 and compacted soil 7 are laid on the flat surface. The compacted layer 5, the steel-plastic grid 6 and the compacted soil 7 cooperate to improve the stability of the road structure.

[0065] The soil material used is coarse-grained soil or rocky soil.

[0066] Preferably, the new roadbed 2 is supported and fixed by the support part 4, and the gaps in the support part 4 are filled with soil materials. The selection of soil materials has certain requirements, among which coarse-grained soil is a good gravel mixture, and stone soil can be crushed stone soil, sandy gravel and crushed stone sand, coarse-grained soil, fine-grained soil, etc. Among them, low-liquid clay soil has high strength and sufficient water stability, and is a better roadbed filling material.

[0067] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A roadbed joint structure for uneven settlement of a road to be rebuilt or expanded, the joint structure being installed at the connection between an old roadbed (1) and a new roadbed (2), characterized in that: include: A fixing part (3), wherein a plurality of groups of the fixing parts (3) are distributed and installed at the joint between the old roadbed (1) and the new roadbed (2); A support portion (4), wherein the support portion (4) is installed in the new roadbed (2); The support portion (4) comprises a triangular support frame (41) and a crossbeam (42); A plurality of groups of the triangular support frames (41) are adjacently distributed to form a sawtooth structure; A plurality of groups of cross beams (42) are spaced apart and distributed between adjacent triangular support frames (41) and inside the triangular support frames (41); The gaps in the new roadbed (2) are filled and compacted with soil materials.

2. The roadbed joint structure for uneven settlement of a road reconstruction and expansion according to claim 1, characterized in that: The fixing portion (3) comprises an integrally formed reinforced fixing plate (31), a fixing tip (32) and a barb (33); The two ends of the reinforced fixing plate (31) are provided with fixing tips (32) extending vertically; The fixing tip (32) extends outward to form a barb (33); The barb (33) forms an angle a with the outer side wall of the fixed tip (32), 0°≤a≤90°; The reinforced fixing plate (31) covers the joint between the old roadbed (1) and the new roadbed (2); The fixing tip (32), the barb (33) and part of the reinforced fixing plate (31) extend into the interior of the old roadbed (1) and the new roadbed (2).

3. The roadbed joint structure for uneven settlement of a road reconstruction and expansion according to claim 2, characterized in that: The reinforced fixing plate (31) is partially located on the upper surface of the old roadbed (1) and the new roadbed (2); The upper surfaces of the old roadbed (1) and the new roadbed (2) are paved with a compacted layer (5); The compacted layer (5) fills the groove formed by the reinforced fixing plate (31) and the old roadbed (1) and the new roadbed (2); A steel-plastic grid (6) is laid above the compacted layer (5); Compacted soil (7) is laid on the steel-plastic grid (6).

4. The roadbed joint structure for uneven settlement of a road reconstruction and expansion according to claim 3 is characterized by: The cement content in the compacted layer (5) is 7% of the entire soil layer; The thickness of the compacted layer (5) is 20 cm to 30 cm.

5. The roadbed joint structure for uneven settlement of a road reconstruction and expansion according to claim 3, characterized in that: The steel-plastic grille (6) has a tensile strength greater than 80 KN / m.

6. The roadbed joint structure for uneven settlement of a road reconstruction and expansion according to claim 1, characterized in that: The soil material is coarse-grained soil or rocky soil.

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