A roadbed structure and construction method thereof

Abstract

The present invention discloses a roadbed structure and a construction method thereof, including a slope and a precast concrete support member, wherein the precast concrete support member includes a horizontal plate and a vertical plate integrally formed above the horizontal plate and perpendicular to the horizontal plate, wherein the horizontal plate is pre-buried inside the slope, and a retaining wall is built from top to bottom on the lower side of the slope, and filling soil is provided between the retaining wall and the precast concrete support member and above the precast concrete support member, and a cement layer is provided above the filling soil. In the present invention, the retaining wall can play a major load-bearing role, and the precast concrete support member can share a part of the weight from above, thereby strengthening the load-bearing capacity of the local foundation, and a force-dividing steel plate is provided, which can further lock the precast concrete support member on the one hand, and bear a part of the weight from the precast concrete support member on the other hand, thereby further strengthening the load-bearing strength.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed, in particular to a roadbed structure and a construction method thereof. Background Art

[0002] The roadbed is the foundation of the track or road surface. Its main function is to provide the necessary conditions for track or road surface laying and train or vehicle operation, and to bear the static and dynamic loads of the track and locomotive vehicles or road surface and traffic loads.

[0003] In the slope roadbed, the retaining wall is the main load-bearing component. The retaining wall structure mainly supports the earth pressure transmitted by the backfill of the wall.

[0004] For slopes, it is generally necessary to make the roadbed horizontal, and then make the road surface on the horizontal roadbed. When operating this kind of slope foundation structure, a retaining wall is generally used. The inside of the retaining wall is filled with soil to retain soil. However, relying solely on the retaining wall to bear the force has a small load-bearing capacity and is prone to rupture. Summary of the invention

[0005] The purpose of the present invention is to provide a roadbed structure and a construction method thereof to solve the problem that the prior art only relies on filling soil inside the retaining wall to retain soil, but only relies on the retaining wall to bear force, has a small load-bearing capacity, and is prone to cause the retaining wall to break.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a roadbed structure, including a slope and a precast concrete support member, wherein the precast concrete support member includes a horizontal plate and a vertical plate integrally formed above the horizontal plate and perpendicular to the horizontal plate, the horizontal plate is pre-buried in the interior of the slope, a retaining wall is built from top to bottom on the lower side of the slope, the retaining wall and the upper ends of the vertical plates are fitted together, filling soil is provided between the retaining wall and the precast concrete support member and above the precast concrete support member, and a cement layer is provided above the filling soil.

[0007] Preferably, a baffle is inserted from top to bottom into the upper side of the slope, and the baffle is in contact with the upper end of the horizontal plate.

[0008] Preferably, a force distribution steel plate is provided on a side of the vertical plate away from the horizontal plate, and the force distribution steel plate is fixed above the slope by anchor bolts.

[0009] Preferably, the force distribution steel plate comprises a force distribution inclined plate supported on a side of the vertical plate away from the horizontal plate and a mounting plate integrally formed on a side of an upper end of the force distribution inclined plate away from the precast concrete support member.

[0010] Preferably, the anchor bolt comprises a bolt body passing through the mounting plate and a hook portion integrally formed at the lower end of the bolt body, and the hook portion is located inside the slope.

[0011] Preferably, the upper end of the bolt body is fixedly connected to the mounting plate via a nut.

[0012] A construction method for a roadbed structure comprises the following steps:

[0013] S1: First, dig a pit on the slope;

[0014] S2: Place the cross plate on the precast concrete supports in the pit;

[0015] S3: Insert the force distribution inclined plate into the slope in line with the outside of the vertical plate;

[0016] S4: Use anchor bolts to install the force-dividing steel plate on the slope. The anchor bolts include a bolt body that passes through the mounting plate and a hook that is integrally formed at the lower end of the bolt body. The hook is located inside the slope. The upper end of the bolt body is fixedly connected to the mounting plate through a nut, and the locking effect is good.

[0017] S5: Build a retaining wall and fill it with backfill soil. Insert a baffle from top to bottom on the upper side of the slope, and the baffle fits the upper end of the horizontal board to facilitate filling. Finally, apply a cement layer.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the retaining wall in the present invention can play a major load-bearing role, and the precast concrete supports provided can share part of the weight from above, thereby strengthening the load-bearing capacity of the local foundation, and a force-dividing steel plate is provided, which can further lock the precast concrete supports on the one hand, and bear part of the weight from the precast concrete supports on the other hand, thereby further strengthening the load-bearing strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the prefabricated concrete support member of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the force-dividing steel plate of the present invention.

[0023] In the figure: 1. slope; 2. precast concrete support; 21. horizontal plate; 22. vertical plate; 3. force-dividing steel plate; 31. force-dividing inclined plate; 32. mounting plate; 4. anchor bolt; 41. hook; 42. bolt body; 43. nut; 5. retaining wall; 6. baffle; 7. filling soil; 8. cement layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 and Figure 2 As shown, in an embodiment of the present invention, a roadbed structure and a construction method thereof include a slope 1 and a precast concrete support member 2. The precast concrete support member 2 includes a horizontal plate 21 and a vertical plate 22 integrally formed above the horizontal plate 21 and perpendicular to the horizontal plate 21. The horizontal plate 21 is pre-buried in the interior of the slope 1. The interior of the precast concrete support member 2 is filled with filling soil 7, so that the precast concrete support member 2 can share a part of the weight from above. A retaining wall 5 is built from top to bottom on the lower side of the slope 1. The retaining wall 5 and the upper end of the vertical plate 22 are fitted together. Filling soil 7 is provided between the retaining wall 5 and the precast concrete support member 2. The retaining wall 5 plays a major load-bearing role. A cement layer 8 is provided above the filling soil 7 as a foundation surface. The retaining wall 5 plays a major load-bearing role. The precast concrete support member 2 can share a part of the weight from above. The force-dividing steel plate 3 can further lock the precast concrete support member 2 on the one hand, and can bear a part of the weight from the precast concrete support member 2 on the other hand. First, a pit is dug on the slope 1, and then the transverse plate 21 on the precast concrete support 2 is placed in the pit, and then the force-dividing inclined plate 31 is inserted into the interior of the slope 1 in accordance with the outer side of the vertical plate 22, and then the force-dividing steel plate 3 is installed above the slope 1 using the anchor bolts 4 (the anchor bolts 4 include a bolt body 42 passing through the mounting plate 32 and a hook 41 integrally formed at the lower end of the bolt body 42, the hook 41 is located inside the slope 1, and the upper end of the bolt body 42 is fixedly connected to the mounting plate 32 by a nut 43, and the locking effect is good), and then the retaining wall 5 is built, and then the filling soil 7 is filled, and a baffle 6 is inserted from top to bottom on the upper side of the slope 1, and the baffle 6 is in accordance with the upper end of the transverse plate 21 for easy filling, and finally a cement layer 8 is applied; the retaining wall 5 plays a major role in bearing the load, and the precast concrete support 2 can share part of the weight from above, and the force-dividing steel plate 3 can further lock the precast concrete support 2 on the one hand, and can bear part of the weight from the precast concrete support 2 on the other hand.

[0026] like Figure 1 In order to facilitate the filling of the filling soil 7, a baffle 6 is inserted from top to bottom on the upper side of the slope 1, and the baffle 6 fits with the upper end of the horizontal plate 21 to facilitate filling;

[0027] Combination Figure 1 and Figure 3In order to further stably lock the precast concrete support 2 on the slope 1, a force-dividing steel plate 3 is provided on the side of the vertical plate 22 away from the horizontal plate 21. The force-dividing steel plate 3 is fixedly connected to the top of the slope 1 through anchor bolts 4. The force-dividing steel plate 3 includes a force-dividing inclined plate 31 supported on the side of the vertical plate 22 away from the horizontal plate 21 and a mounting plate 32 integrally formed on the upper end of the force-dividing inclined plate 31 away from the precast concrete support 2. The force-dividing steel plate 3 further locks the precast concrete support 2 and can bear part of the weight from the precast concrete support 2.

[0028] Combination Figure 1 and Figure 3 The anchor bolt 4 includes a bolt body 42 passing through the mounting plate 32 and a hook portion 41 integrally formed at the lower end of the bolt body 42 . The hook portion 41 is located inside the slope 1 . The upper end of the bolt body 42 is fixedly connected to the mounting plate 32 through a nut 43 .

[0029] A construction method for a roadbed structure comprises the following steps:

[0030] S1: First, dig a pit on slope 1;

[0031] S2: placing the horizontal plate 21 on the precast concrete support 2 into the pit;

[0032] S3: Insert the force distribution inclined plate 31 into the slope 1 in contact with the outside of the vertical plate 22;

[0033] S4: Use anchor bolts 4 to install the force-dividing steel plate 3 on the slope 1. The anchor bolts 4 include a bolt body 42 passing through the mounting plate 32 and a hook portion 41 integrally formed at the lower end of the bolt body 42. The hook portion 41 is located inside the slope 1. The upper end of the bolt body 42 is fixedly connected to the mounting plate 32 through a nut 43, and the locking effect is good.

[0034] S5: Build the retaining wall 5 again, and then fill the backfill soil 7. Insert the baffle 6 from top to bottom on the upper side of the slope 1, and the baffle 6 fits with the upper end of the horizontal plate 21 to facilitate filling, and finally apply a cement layer 8.

[0035] The working principle and use process of the present invention are as follows: when installing the device, first dig a pit on the slope 1, then place the horizontal plate 21 on the precast concrete support 2 in the pit, then insert the force-dividing inclined plate 31 into the interior of the slope 1 by fitting the outer side of the vertical plate 22, and then use the anchor bolt 4 to install the force-dividing steel plate 3 above the slope 1 (the anchor bolt 4 includes a bolt body 42 passing through the mounting plate 32 and a hook 41 integrally formed at the lower end of the bolt body 42, the hook 41 is located inside the slope 1, and the upper end of the bolt body 42 is fixedly connected to the mounting plate 32 by a nut 43, and the locking effect is good), then build the retaining wall 5, and then fill the filling soil 7, insert a baffle 6 from top to bottom on the upper side of the slope 1, and the baffle 6 fits the upper end of the horizontal plate 21 for easy filling, and finally apply a cement layer 8;

[0036] The retaining wall 5 plays a major load-bearing role, and the precast concrete support 2 can share part of the weight from above. The force-sharing steel plate 3 can further lock the precast concrete support 2 on the one hand, and bear part of the weight from the precast concrete support 2 on the other hand.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A roadbed structure, comprising a slope (1), characterized in that: The invention also comprises a precast concrete support member (2), wherein the precast concrete support member (2) comprises a horizontal plate (21) and a vertical plate (22) integrally formed above the horizontal plate (21) and perpendicular to the horizontal plate (21), wherein the horizontal plate (21) is pre-buried inside the slope (1), and a retaining wall (5) is built from top to bottom on the lower side of the slope (1), and the retaining wall (5) and the upper ends of the vertical plates (22) are fitted together, and filling soil (7) is provided between the retaining wall (5) and the precast concrete support member (2) and above the precast concrete support member (2), and a cement layer (8) is provided above the filling soil (7); a baffle (6) is inserted from top to bottom on the upper side of the slope (1), and the baffle (6) and the upper ends of the horizontal plate (21) are connected. The vertical plate (22) is provided with a force distribution steel plate (3) on the side away from the horizontal plate (21), and the force distribution steel plate (3) is fixedly connected to the top of the slope (1) through anchor bolts (4); the force distribution steel plate (3) includes a force distribution inclined plate (31) supported on the side of the vertical plate (22) away from the horizontal plate (21) and a mounting plate (32) integrally formed on the upper end of the force distribution inclined plate (31) away from the precast concrete support member (2); the anchor bolt (4) includes a bolt body (42) passing through the mounting plate (32) and a hook portion (41) integrally formed on the lower end of the bolt body (42), and the hook portion (41) is located inside the slope (1); the upper end of the bolt body (42) is fixedly connected to the mounting plate (32) through a nut (43).

2. A construction method for a roadbed structure according to claim 1, characterized in that: The following steps are involved: S1: First, dig a pit on the slope (1); S2: placing the horizontal plate (21) on the precast concrete support (2) into the pit; S3: inserting the force distribution inclined plate (31) into the interior of the slope (1) in contact with the outer side of the vertical plate (22); S4: The force-dividing steel plate (3) is installed above the slope (1) using an anchor bolt (4), wherein the anchor bolt (4) comprises a bolt body (42) passing through the mounting plate (32) and a hook portion (41) integrally formed at the lower end of the bolt body (42), wherein the hook portion (41) is located inside the slope (1), and the upper end of the bolt body (42) is fixedly connected to the mounting plate (32) via a nut (43), thereby achieving a good locking effect; S5: Build a retaining wall (5) and fill it with backfill soil (7). Insert a baffle (6) from top to bottom on the upper side of the slope (1), and fit the baffle (6) with the upper end of the horizontal plate (21) to facilitate filling. Finally, apply a cement layer (8).

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