Corrugated steel-steel pipe supporting structure

Abstract

The utility model relates to a corrugated steel-steel pipe supporting structure. The existing corrugated steel supporting structure has the problems of insufficient structural strength and low stability. The section of the supporting structure is in a horseshoe shape with an opening in the bottom. The supporting structure comprises a corrugated steel arch, a reinforcing arch rib and a reinforcing filling layer, the corrugated steel arch is formed by sequentially stacking a plurality of corrugated steel plates in a peak-valley mode and then connecting the corrugated steel plates, and the lower end of the corrugated steel arch is fixed to a bearing base of a tunnel body through a steel arch connecting base; a plurality of reinforcing arch ribs are fixed to the side, facing the inner wall of the tunnel body or the side, back to the inner wall of the tunnel body, of the corrugated steel arch, and each reinforcing arch rib is arranged in a trough of the corrugated steel arch in the circumferential direction through a plurality of arch rib fixing assemblies. A grouting filling space is formed between the corrugated steel arch and the inner wall of the hole body, and the grouting filling space is filled with the reinforcing filling layer. The corrugated steel supporting structure is higher in structural strength, higher in stability and capable of preventing corrosion.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and particularly relates to a corrugated steel-steel pipe support structure. Background Art

[0002] In civil engineering and underground engineering construction, the tunnel support system is a key component to ensure the safety and stability of the project. The tunnel support system usually includes primary support and secondary lining. The primary support is mainly used to provide immediate support during the tunnel excavation process to prevent the surrounding rock from deforming and collapsing, ensuring construction safety. Common primary support materials include concrete, reinforced concrete, steel plates, and corrugated steel plates, etc.

[0003] Due to its good strength and flexibility, corrugated steel plates are widely used in the primary support of tunnels and underground projects. The corrugated design of the corrugated steel plate can effectively disperse stress when bearing external forces, improving the load-bearing capacity of the structure. At the same time, it is easy to install and has a short construction period, so it has significant advantages in engineering practice.

[0004] The existing corrugated steel plate support structure mainly forms an arch support through corrugated steel plates to provide primary support during the tunnel excavation process. Patent CN211819436U discloses "a corrugated steel support structure for tunnels". Although the corrugated steel support structure in the document has good stress performance and good anti-deformation and anti-collapse capabilities, it still has the following deficiencies:

[0005] 1. Insufficient structural strength: Although the corrugated steel plate has good flexibility and a certain load-bearing capacity, the arch support structure relying solely on the corrugated steel plate may have insufficient structural strength when facing large external forces or complex geological conditions, making it difficult to ensure long-term stability and safety.

[0006] 2. Low stability: Although the corrugated steel plate is relatively easy to install compared with other materials, in the actual construction process, especially for large tunnel projects, the construction is still relatively complex, resulting in insecure fixation and requiring professional equipment and technology.

[0007] Therefore, there is an urgent need for a new corrugated steel support structure with higher structural strength and stability. Summary of the Invention

[0008] The purpose of the utility model is to provide a corrugated steel-steel pipe support structure to at least solve the problems of insufficient structural strength and low stability in the prior art.

[0009] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0010] A corrugated steel-steel pipe support structure, the cross-section of the support structure is a horseshoe shape with an open bottom;

[0011] The support structure includes a corrugated steel arch, reinforcing arch ribs, and a reinforcement filling layer. The corrugated steel arch is formed by connecting a number of corrugated steel plates in sequence with their crests and troughs stacked on top of each other. The lower end of the corrugated steel arch is fixed to the bearing base of the tunnel body through a steel arch connection seat. On one side of the corrugated steel arch facing the inner wall of the tunnel body or on the side facing away from the inner wall of the tunnel body, a number of the reinforcing arch ribs are fixed. Each of the reinforcing arch ribs is arranged circumferentially in the troughs of the corrugated steel arch through multiple groups of arch rib fixing components.

[0012] A grouting filling space is formed between the corrugated steel arch and the inner wall of the tunnel body, and the reinforcement filling layer is filled in the grouting filling space.

[0013] Furthermore, the reinforcing arch ribs are steel pipes, and a number of the steel pipes are arranged at intervals along the extending direction of the corrugated steel arch.

[0014] Furthermore, a number of the steel pipes are sequentially arranged in each trough of the corrugated steel arch along the extending direction of the corrugated steel arch.

[0015] Furthermore, the length of the steel pipe is the same as the length of the trough, and a reinforcing filler is arranged inside the steel pipe.

[0016] Furthermore, the arch rib fixing component includes a clamp and a number of connecting bolts. The clamp includes a clamp body and bolt connection edges located at both ends of the clamp body. The clamp body fits above the steel pipe, and the bolt connection edges are located on both sides of the steel pipe and are respectively fixed to the corrugated steel plate through the connecting bolts.

[0017] Furthermore, each of the steel pipes is fixed to the corrugated steel arch through a number of the arch rib fixing components arranged at intervals, and a number of the arch rib fixing components are symmetrically arranged along the center line of the corrugated steel arch.

[0018] Furthermore, the bearing base includes a concrete pedestal and a flange embedded part. The concrete pedestal is arranged on both sides of the bottom wall of the tunnel body, the flange embedded part is embedded above the concrete pedestal, and the steel arch connection seat is fixed to the flange embedded part and is fixedly connected to the corrugated steel plate.

[0019] Furthermore, the cross-section of the steel arch connection seat is an inverted T shape, including a bottom plate and a vertical plate. The vertical plate is inclined on the bottom plate.

[0020] Furthermore, the bottom end of the corrugated steel plate is arranged at the corner formed by the bottom plate and the vertical plate.

[0021] Furthermore, anti-rust coatings are applied on both the corrugated steel plate and the steel pipe.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] 1. In the present utility model, a number of steel pipes are arranged at intervals in the troughs on one side of the corrugated steel plate facing the inner wall of the tunnel or on the side facing away from the inner wall of the tunnel. By adding steel pipes at the troughs of the corrugated steel plate, the bearing capacity of the corrugated steel plate is further improved, so that the structural strength of the corrugated steel plate is sufficient to cope with greater external forces and complex geological conditions, ensuring long-term stability and safety.

[0024] 2. In the present utility model, the bottom of the concrete base is closely attached to the road surface, and one side wall thereof is closely attached to the inner wall of the tunnel, so that the stability of the concrete base is higher. The corrugated steel plate is fixed to the concrete base through a steel arch connecting seat and high-strength bolts. Due to the high stability of the concrete base, the fixing of the corrugated steel plate is more reliable and the stability is higher.

[0025] 3. In an embodiment of the present utility model, a number of steel pipes are sequentially arranged in each trough of the corrugated steel plate, so that the bearing capacity of the corrugated steel plate is stronger, and the stability and safety are higher.

[0026] 4. In an embodiment of the present utility model, an anti-rust coating is applied to the corrugated steel plate and the steel pipes, so that the corrugated steel plate and the steel pipes are not easily corroded, thereby ensuring the durability and reliability of the support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0028] Figure 1 is the elevation view of the present utility model applied in the tunnel;

[0029] Figure 2 is Figure 1 the enlarged view of part A in

[0030] Figure 3 is the cross-sectional view of the steel arch connecting seat;

[0031] Figure 4 is the structural schematic diagram of the corrugated steel plate and the steel pipes;

[0032] Figure 5 is Figure 4 the longitudinal sectional view;

[0033] The labels in the figure are:

[0034] 1 - Corrugated steel arch, 2 - Reinforced arch rib, 3 - Corrugated steel plate, 4 - Steel pipe, 5 - Clamp, 6 - Connecting bolt, 7 - Concrete pedestal, 8 - Flange embedded part, 9 - Steel arch connecting seat, 91 - Bottom plate, 92 - Vertical plate, 10 - High-strength bolt, 11 - Grouting filling space. Detailed implementation mode

[0035] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Of course, such objects can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0039] Embodiment 1:

[0040] As Figure 1 shown, this embodiment provides a corrugated steel - steel pipe support structure. The cross-section of the support structure is a horseshoe shape with an open bottom. The support structure includes a corrugated steel arch 1, a reinforced arch rib 2, and a reinforcement filling layer.

[0041] Among them, the corrugated steel arch 1 is formed by sequentially connecting a number of corrugated steel plates 3 in a peak-valley stacking manner. A number of reinforcing arch ribs 2 are fixed on one side of the corrugated steel arch 1 facing the inner wall of the tunnel. Each reinforcing arch rib 2 is arranged in the trough of the corrugated steel arch 1 along the circumferential direction through a plurality of arch rib fixing components.

[0042] Further, as Figure 4 shown, the reinforcing arch rib 2 is a steel pipe 4. A number of steel pipes 4 are arranged at intervals along the extending direction of the corrugated steel arch 1. By adding the steel pipes 4 at the troughs of the corrugated steel plates 3, the bearing capacity of the corrugated steel plates 3 is further improved, so that the structural strength of the corrugated steel plates 3 is sufficient to cope with large external forces and complex geological conditions, ensuring long-term stability and safety.

[0043] The length of the steel pipe 4 is the same as the length of the trough, and a reinforcing filler is arranged inside the steel pipe 4.

[0044] Further, as Figure 5 shown, the arch rib fixing component includes a clamp 5 and two connecting bolts 6. The clamp includes a clamp body and bolted edges located at both ends of the clamp body. The clamp body fits above the steel pipe 4, and the bolted edges are located on both sides of the steel pipe 4 and are respectively fixed to the corrugated steel plate 3 through the connecting bolts 6. The clamp body and the bolted edges located at both ends of the clamp body are integrally arranged.

[0045] The clamp 5 is a cuboid. First bolt holes are respectively opened on the bolted edges located at both ends of the clamp body. A number of groups of second bolt holes are symmetrically opened on the corrugated steel plate 3 on both sides of the steel pipe 4. When the bolted edges are respectively located on both sides of the steel pipe 4, the first bolt holes and the second bolt holes correspond to each other. The bolted edges at both ends of the clamp 5 are respectively fixed to the corrugated steel plate 3 through the connecting bolts 6 successively passing through the first bolt holes and the second bolt holes, so that the clamp 5 is fixed to the steel pipe 4.

[0046] Each steel pipe 4 is fixed to the corrugated steel arch 1 through a number of arch rib fixing components arranged at intervals, and a number of arch rib fixing components are symmetrically arranged along the center line of the corrugated steel arch 1.

[0047] Further, the lower end of the corrugated steel arch 1 is fixed to the foundation of the tunnel body through a steel arch connecting seat 9.

[0048] As Figure 2 shown, the foundation includes a concrete base 7 and a flange embedded part 8. The bottom of the concrete base 7 is closely attached to the road surface, and one side wall of it is closely attached to the inner wall of the tunnel, so that the stability of the concrete base 7 is higher. The side of the concrete base 7 away from the inner wall of the tunnel forms a right angle with its upper end surface. The flange embedded part 8 is embedded above the concrete base 7. The cross section of the flange embedded part 8 is π-shaped. A number of third bolt holes are opened on the upper end surface of the flange embedded part 8, and the third bolt holes are symmetrically distributed on both sides of the corrugated steel plate 3.

[0049] As Figure 3As shown in the figure, the cross-section of the steel arch connecting seat 9 is an inverted T shape, including a bottom plate 91 and a vertical plate 92. The bottom plate 91 and the vertical plate 92 are integrally arranged. The bottom plate 91 is closely attached to the upper end surface of the flange embedded part 8 and the bottom end of the corrugated steel plate 3. A number of fourth bolt holes corresponding to the third bolt holes are provided on the bottom plate 91. The bottom plate 91 is fixed to the upper end surface of the flange embedded part 8 by passing high-strength bolts 10 through the fourth bolt holes and the third bolt holes in sequence. The vertical plate 92 is inclined on the bottom plate 91 and the vertical plate 92 is closely attached to the side of the corrugated steel plate 3 facing the tunnel inner wall. A number of fifth bolt holes are provided on the vertical plate 92. The fifth bolt holes are distributed in two rows. A number of sixth bolt holes corresponding to the fifth bolt holes are provided on the corrugated steel plate 3. The vertical plate 92 is fixed to the corrugated steel plate 3 by passing high-strength bolts 10 through the fifth bolt holes and the sixth bolt holes in sequence, so that the bottom end of the corrugated steel plate 3 is fixed at the corner formed by the bottom plate 91 and the vertical plate 92.

[0050] The corrugated steel plate 3 is fixed to the concrete pedestal 7 through the steel arch connecting seat 9 and the high-strength bolts 10. Due to the high stability of the concrete pedestal 7, the fixing of the corrugated steel plate 3 is more reliable, and it also has high stability.

[0051] Furthermore, a grouting filling space 11 is formed between the corrugated steel arch 1 and the tunnel inner wall, and a reinforcement filling layer is filled in the grouting filling space 11. In this embodiment, the reinforcement filling layer is concrete mortar. In other embodiments, the reinforcement filling layer can also be foamed concrete or reinforced concrete.

[0052] Furthermore, both the corrugated steel plate 3 and the steel pipe 4 are coated with anti-rust paint, so that the corrugated steel plate 3 and the steel pipe 4 are not easily rusted, ensuring the durability and reliability of the support structure.

[0053] Embodiment 2:

[0054] In this embodiment, a number of steel pipes 4 are sequentially arranged in each trough on the side of the corrugated steel plate 3 facing the tunnel inner wall, so that the corrugated steel plate 3 has stronger bearing capacity, higher stability and safety. The rest of the working principles and processes are the same as those in Embodiment 1.

[0055] Embodiment 3:

[0056] In this embodiment, a number of steel pipes 4 are arranged in the troughs on the side of the corrugated steel arch 1 facing away from the tunnel inner wall along the extension direction of the corrugated steel arch 1. The rest of the working principles and processes are the same as those in Embodiment 1.

[0057] It should be noted that in other embodiments, the stiffening rib 2 can also be an H-shaped steel, a T-shaped steel or other strengthening members with mechanical strength.

[0058] The above uses specific examples to elaborate on the present utility model, which is only used to help understand the present utility model and is not intended to limit the present utility model. For those skilled in the technical field to which the present utility model pertains, several simple deductions, deformations or substitutions can also be made based on the idea of the present utility model.

Claims

1. A corrugated steel-steel pipe support structure, characterized in that: The cross-section of the support structure is a U-shaped with an opening at the bottom; The support structure includes a corrugated steel arch (1), reinforcing arch ribs (2) and a reinforced filling layer. The corrugated steel arch (1) is formed by connecting a number of corrugated steel plates (3) in sequence with their peaks and valleys stacked. The lower end of the corrugated steel arch (1) is fixed to the bearing base of the tunnel body through a steel arch connection seat (9); on one side of the corrugated steel arch (1) facing the inner wall of the tunnel or on the side facing away from the inner wall of the tunnel, a number of the reinforcing arch ribs (2) are fixed. Each of the reinforcing arch ribs (2) is arranged in the valleys of the corrugated steel arch (1) along the circumferential direction through a plurality of arch rib fixing components; A grouting filling space (11) is formed between the corrugated steel arch (1) and the inner wall of the tunnel body, and the reinforced filling layer is filled in the grouting filling space (11).

2. The corrugated steel - steel pipe support structure according to claim 1, wherein: The reinforcing arch ribs (2) are steel pipes (4), and a number of the steel pipes (4) are arranged at intervals along the extending direction of the corrugated steel arch (1).

3. The corrugated steel - steel pipe support structure according to claim 2, wherein: A number of the steel pipes (4) are sequentially arranged in each valley of the corrugated steel arch (1) along the extending direction of the corrugated steel arch (1).

4. The corrugated steel - steel pipe support structure according to claim 2, wherein: The length of the steel pipe (4) is the same as the length of the valley, and a reinforcing filler is arranged in the steel pipe (4).

5. The corrugated steel - steel pipe support structure according to claim 2, wherein: The arch rib fixing component includes a clamp (5) and a number of connecting bolts (6). The clamp (5) includes a clamp body and bolt - connecting edges at both ends of the clamp body. The clamp body fits above the steel pipe (4), and the bolt - connecting edges are located on both sides of the steel pipe (4) and are respectively fixed to the corrugated steel plate (3) through the connecting bolts (6).

6. The corrugated steel - steel pipe support structure according to claim 2, wherein: Each of the steel pipes (4) is fixed to the corrugated steel arch (1) through a number of the arch rib fixing components arranged at intervals, and a number of the arch rib fixing components are symmetrically arranged along the center line of the corrugated steel arch (1).

7. The corrugated steel - steel pipe support structure according to claim 1, wherein: The bearing base includes a concrete pedestal (7) and a flange embedded part (8). The concrete pedestal (7) is arranged on both sides of the bottom wall of the tunnel body, the flange embedded part (8) is embedded above the concrete pedestal (7), and the steel arch connection seat (9) is fixed to the flange embedded part (8) and is fixedly connected to the corrugated steel plate (3).

8. The corrugated steel - steel pipe support structure according to claim 7, wherein: The cross - section of the steel arch connection seat (9) is an inverted T - shape, including a bottom plate (91) and a vertical plate (92), and the vertical plate (92) is inclined on the bottom plate (91).

9. The corrugated steel - steel pipe support structure according to claim 8, wherein: The bottom end of the corrugated steel plate (3) is arranged at the corner formed by the bottom plate (91) and the vertical plate (92).

10. A corrugated steel - steel pipe support structure according to claim 2, characterized in that: Antirust coatings are applied to both the corrugated steel plate (3) and the steel pipe (4).

Images