Tunnel steel frame connector connecting structure

Abstract

The utility model provides a tunnel steel frame connector connecting structure which comprises a connecting steel plate fixedly installed at the end of an I-shaped steel frame, two square installation frames which are hollow and provided with openings in one faces, and first buckling assemblies which are arranged on the side walls of the installation frames and used for fixing the two installation frames to each other. The buffering assembly is arranged in the mounting frame and can be contracted and deformed, the two moving plates are connected to the upper end and the lower end of the buffering assembly respectively and are in sliding connection with the inner side wall of the mounting frame, and the second buckling assembly is arranged between the moving plates and the connecting steel plate. The connecting steel plate is connected to the movable plate through a second buckling assembly. According to the utility model, the two groups of steel frames can be quickly aligned and fixed, the firmness and the stability of the steel frame joint are ensured, the stress concentration phenomenon is reduced through the buffering deformation capability, the influence of tunnel deformation and vibration on the steel frame joint is reduced, the bearing capability of the steel frame joint is improved, and the risk of fracture or failure is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel engineering technology, and specifically relates to a tunnel steel frame joint connection structure. Background Technology

[0002] In tunnel construction, steel frames serve as a primary support structure, used to support and reinforce the surrounding rock of the tunnel, prevent it from collapsing, and ensure construction safety and the stability of the tunnel structure. Existing steel frames are typically fabricated in sections and then assembled on-site using bolts.

[0003] As a crucial component of the steel frame structure, the stability of the connection structure and the efficiency of construction directly impact the quality and progress of the entire tunnel project. Currently, the steel frame joint mainly consists of joint steel plates and connecting bolts. During steel frame assembly, construction workers need to align the joint steel plates at the ends of the steel frame and then connect them with bolts. However, during construction, the steel frame is prone to displacement, increasing the difficulty of assembly and potentially leading to unstable connections. Furthermore, due to the complex and variable properties of the rock strata, the steel frame is often subjected to pressure from the surrounding rock layers, making the joint a stress concentration area. Since the rigid connection structure of bolts and steel plates has poor deformation capacity, this results in excessive stress at the joint, increasing the risk of fracture or failure, affecting the supporting capacity of the entire steel frame structure, and posing a serious threat to the safety and stability of tunnel construction. Utility Model Content

[0004] The purpose of this utility model is to provide a tunnel steel frame joint connection structure to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tunnel steel frame joint connection structure includes a connecting steel plate fixedly installed at the end of an I-shaped steel frame, two hollow square mounting frames with one side open and opposite to each other, a first fastening assembly disposed on the side wall of the mounting frames for fixing the two mounting frames to each other, a shrinkable and deformable buffer assembly disposed inside the mounting frames, two movable plates respectively connected to the upper and lower ends of the buffer assembly and slidably connected to the inner side wall of the mounting frames, and a second fastening assembly disposed between the movable plates and the connecting steel plate, wherein the connecting steel plate is connected to the movable plates through the second fastening assembly.

[0007] Preferably, the upper and lower side walls of the mounting frame are provided with through slots for the passage of the I-shaped steel frame.

[0008] Preferably, the buffer assembly includes: a sleeve with one end fixedly connected to a movable plate, a sliding post with one end slidably disposed inside the sleeve and the other end fixedly connected to another movable plate, a rubber post connected to the sliding post at one end of the sleeve, and a high-strength spring sleeved on the outside of the sleeve and connected to the movable plates on both sides respectively.

[0009] Preferably, there is a gap between the bottom end of the rubber column and the bottom wall of the sleeve.

[0010] Preferably, the first fastening assembly includes: an insert plate connected to the side wall of the opening end of a mounting frame, a slot disposed on the side wall of another mounting frame for insert plate insertion, a fixing groove disposed on the insert plate, and a fixing groove disposed on the side wall of the slot for matching the elastic pin.

[0011] Preferably, the upper and lower inner walls of the slot are respectively provided with mounting grooves, and the elastic pin includes: a pin head that is slidably disposed at one end in the mounting groove, and a first spring connected between the pin head and the mounting groove. The side of the pin head near the slot opening is an inclined surface, and the upper and lower ends of the side of the insert plate away from the mounting frame are both provided with inclined surfaces.

[0012] Preferably, the second fastening assembly includes: two mutually symmetrical and slidably disposed on the movable plate, a second spring connected between the two fastening plates, a trapezoidal opening disposed on the connecting steel plate, and a square snap-fit ​​groove disposed through the connecting steel plate and communicating with the trapezoidal opening, wherein the opening end of the trapezoidal opening is the long side of the trapezoid, and the snap-fit ​​groove is disposed on the short side of the trapezoidal opening.

[0013] Preferably, the snap-fit ​​plate includes: a vertical plate, a T-shaped slider connected to the lower end of the vertical plate, and a horizontal plate disposed on the upper end of the vertical plate. The upper end surface of the movable plate is provided with a T-shaped groove that slides with the T-shaped slider, and the top end of the horizontal plate contacts the inner sidewall of the mounting frame.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] 1. This utility model enables a tight connection between the connecting steel plate, the movable plate, and the mounting frame by setting a second fastening component, and enables the two mounting frames to be quickly aligned and fixed by the first fastening component, which greatly simplifies the assembly process of the steel frame joint, ensures the firmness and stability of the steel frame joint, and effectively improves construction efficiency. By setting a buffer component and a movable plate connected to it inside the mounting frame, the steel frame joint can have a certain deformation capacity when subjected to rock pressure, thereby dispersing and absorbing stress, reducing the occurrence of stress concentration, and thus reducing the impact of tunnel deformation and vibration on the steel frame joint, improving the load-bearing capacity of the steel frame joint, preventing displacement or deformation of the steel frame, and reducing the risk of breakage or failure.

[0016] 2. This utility model sets high-strength springs between the moving plates and rubber columns with a certain distance between them and the bottom wall of the sleeve between the sliding column and the sleeve. When the steel frame is subjected to the deformation force of the surrounding rock, the high-strength springs will elastically deform to provide an initial buffering effect, reducing the instantaneous impact on the steel frame and absorbing and dispersing deformation energy. As the deformation continues, the movement of the steel frame will further compress the rubber columns inside the sleeve. The rubber can absorb and disperse deformation energy over a large range, thereby further enhancing the buffering effect. Through the combined action of the high-strength springs and the rubber inside the sleeve, a multi-level deformation and pressure relief structure is formed to adapt to different levels of deformation requirements and effectively improve the stability and buffering capacity of the steel frame connection.

[0017] 3. This utility model achieves a quick and stable connection and fixation between two mounting frames through the insertion and engagement of the insert plate and slot in the first fastening assembly, and the locking mechanism of the elastic pin and the fixing groove. The second fastening assembly achieves a stable fastening between the moving plate and the connecting steel plate through the sliding of the buckle plate on the moving plate, the elastic force of the second spring, and the engagement of the trapezoidal opening and the square snap-fit ​​groove on the connecting steel plate. The snap-fit ​​engagement of the T-shaped slot and the buckle plate achieves a stable connection between the moving plate and the mounting frame, simplifying the assembly process of the steel frame joint, ensuring the firmness and stability of the steel frame joint, and effectively improving the construction efficiency of the steel frame. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the disassembled structure of a tunnel steel frame joint connection structure;

[0020] Figure 2This is a schematic diagram of the external structure of a tunnel steel frame joint connection structure;

[0021] Figure 3 A cross-sectional view of a buffer component in a tunnel steel frame joint connection structure;

[0022] Figure 4 A schematic diagram of the first fastening component of a tunnel steel frame joint connection structure;

[0023] Figure 5 This is a partial structural diagram of a tunnel steel frame joint connection structure, showing the connection steel plate, square mounting frame, and movable plate.

[0024] Figure 6 A schematic diagram of a snap-on plate structure for a tunnel steel frame joint connection structure;

[0025] Reference numerals: 1-I-shaped steel frame, 2-connecting steel plate, 3-mounting frame, 4-buffer assembly, 5-moving plate, 6-through groove, 7-sleeve, 8-sliding column, 9-high-strength spring, 10-rubber column, 11-insertion plate, 12-slot, 13-fixing groove, 14-mounting groove, 15-pin head, 16-first spring, 17-clasp plate, 18-second spring, 19-trapezoidal opening, 20-clamping groove, 21-vertical plate, 22-T-shaped slider, 23-horizontal plate, 24-T-shaped slide groove Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0033] like Figure 1 and Figure 2 As shown, a tunnel steel frame joint connection structure includes a connecting steel plate 2 fixedly installed at the end of an I-shaped steel frame 1, two hollow square mounting frames 3 with one side open and opposite to each other, a first fastening assembly disposed on the side wall of the mounting frame 3 for fixing the two mounting frames 3 to each other, a shrinkable and deformable buffer assembly 4 disposed inside the mounting frame 3, two movable plates 5 respectively connected to the upper and lower ends of the buffer assembly 4 and slidably connected to the inner side wall of the mounting frame 3, and a second fastening assembly disposed between the movable plates 5 and the connecting steel plate 2. The connecting steel plate 2 is fixed to the movable plates 5 by the second fastening assembly.

[0034] In this invention, when connecting the steel frame, two mounting frames 3 are first fitted onto the ends of the I-beam. After alignment, the two mounting frames 3 are pushed tightly. The first fastening component automatically and quickly locks the two mounting frames 3 to form an integral shell. At the same time, the connecting steel plate 2 is also quickly connected to the moving plate 5 through the second fastening component. This structure greatly simplifies the assembly process of the steel frame joint, ensures the firmness and stability of the steel frame joint, and effectively improves construction efficiency. When the steel frame is subjected to rock pressure, the pressure is transmitted to the moving plate 5 through the connecting steel plate 2, driving the buffer component 4 to contract and deform to absorb stress. This allows the steel frame joint to have a certain deformation capacity when subjected to rock pressure, thereby reducing the occurrence of stress concentration, and thus reducing the impact of tunnel deformation and vibration on the steel frame joint, improving the load-bearing capacity of the steel frame joint, preventing displacement or deformation of the steel frame, and reducing the risk of breakage or failure.

[0035] The mounting frame 3 has through slots 6 on its upper and lower side walls for the passage of the I-shaped steel frame 1. The through slots are designed to allow the mounting frame to adapt to the I-shaped structure of the I-shaped steel frame. When the I-shaped steel frame is connected to the mounting frame, its side needs to be inserted into the through slots. This also solves the problem of difficult docking caused by steel frame misalignment in traditional methods.

[0036] like Figure 3 As shown, the buffer assembly 4 includes: a sleeve 7 with one end fixedly connected to a movable plate 5; a sliding column 8 with one end slidably disposed inside the sleeve 7 and the other end fixedly connected to another movable plate 5; a rubber column 10 connected to the sliding column 8 at one end of the sleeve 7; and a high-strength spring 9 sleeved on the outside of the sleeve 7 and connected to the two movable plates 5 on both sides respectively; there is a gap between the bottom end of the rubber column 10 and the bottom wall of the sleeve 7.

[0037] When the steel frame is subjected to the force of surrounding rock deformation, the initial pressure will push the moving plate 5 to compress the high-strength spring 9 to absorb energy, providing an initial buffering effect, reducing the instantaneous impact on the steel frame, and absorbing and dispersing deformation energy. As the deformation continues and the pressure increases, the sliding column 8 drives the rubber column 10 to slide towards the bottom of the sleeve 7. After the rubber column 10 contacts the bottom wall of the sleeve 7, it will be squeezed. The rubber can absorb and disperse deformation energy over a large range, thereby further enhancing the buffering effect. Through the joint action of the high-strength spring 9 and the rubber column 10, a multi-level deformation pressure relief structure is formed to adapt to different levels of deformation requirements, effectively improving the stability and buffering capacity of the steel frame connection.

[0038] like Figure 4As shown, the first fastening assembly includes: an insert plate 11 connected to the side wall of the opening end of a mounting frame 3, a slot 12 disposed on the side wall of another mounting frame 3 for inserting the insert plate 11, a fixing groove 13 disposed on the insert plate 11, and a fixing groove 13 disposed on the side wall of the slot 12 and adapted to the elastic pin.

[0039] The slot 12 has mounting grooves 14 on its upper and lower inner sidewalls. The elastic pin includes a pin head 15 that is slidably disposed in the mounting groove 14 at one end, and a first spring 16 that connects the pin head 15 and the mounting groove 14. The side of the pin head 15 near the opening of the slot 12 is an inclined surface. The upper and lower ends of the side of the insert plate 11 away from the mounting frame 3 are both provided with inclined surfaces.

[0040] The working principle of the first fastening component is as follows: when the insert plate 11 of one mounting frame 3 is inserted into the slot 12 of another mounting frame 3, the inclined surface of the insert plate 11 presses against the inclined surface of the pin head, thereby forcing the pin head 15 to retract into the mounting groove 14 and compress the first spring 16. When the insert plate 11 is fully inserted and the fixing groove 13 is aligned with the pin head 15, the first spring 16 pushes the pin head 15 into the fixing groove 13, thereby completing the locking between the two mounting frames 3, realizing the rapid alignment and automatic locking of the two mounting frames 3, and solving the problem of low on-site assembly efficiency.

[0041] like Figure 5 and Figure 6 As shown, the second fastening assembly includes: two mutually symmetrical and slidably disposed on the movable plate 5, a second spring 18 connected between the two fastening plates, a trapezoidal opening 19 disposed on the connecting steel plate 2, and a square snap-fit ​​groove 20 disposed through the connecting steel plate 2 and communicating with the trapezoidal opening 19. The opening end of the trapezoidal opening 19 is the long side of the trapezoid, and the snap-fit ​​groove 20 is disposed on the short side of the trapezoidal opening 19.

[0042] The buckle plate 17 includes: a vertical plate 21, a T-shaped slider 22 connected to the lower end of the vertical plate 21, and a horizontal plate 23 disposed on the upper end of the vertical plate 21. The upper surface of the movable plate 5 is provided with a T-shaped groove 24 that slides with the T-shaped slider 22. The top end of the horizontal plate 23 contacts the inner side wall of the mounting frame 3.

[0043] The working principle of the second fastening assembly is as follows: When the connecting steel plate 2 is inserted, the inclined surface of its trapezoidal opening 19 presses against the inner side of the vertical plate 21 of the two snap-on plates 17, pushing the two snap-on plates 17 to slide towards each other along the T-shaped slide groove 25, compressing the second spring 18 to store elastic potential energy. When the connecting steel plate 2 is inserted to the snap-on groove 20 and aligned with the horizontal plate 23, the second spring 1 pushes the two snap-on plates 17 away from each other, and the vertical plate 21 contacts and is restricted by the snap-on groove 20, thereby completing the fixing of the connecting steel plate. It should be noted that when the spring is in its natural state, the distance between the vertical plates 21 of the two snap-on plates 17 is the same as the width of the snap-on groove 20.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail can be made without departing from the spirit and scope of this utility model as defined in the appended claims.

Claims

1. A tunnel steel frame joint connection structure, characterized in that: The system includes a connecting steel plate (2) fixedly installed at the end of an I-shaped steel frame (1), two square mounting frames (3) that are hollow inside, open on one side and with their openings facing each other, a first fastening assembly set on the side wall of the mounting frame (3) for fixing the two mounting frames (3) to each other, a shrinkable and deformable buffer assembly (4) located inside the mounting frame (3), two movable plates (5) respectively connected to the upper and lower ends of the buffer assembly (4) and slidably connected to the inner side wall of the mounting frame, and a second fastening assembly set between the movable plates (5) and the connecting steel plate (2), wherein the connecting steel plate (2) is connected to the movable plates (5) through the second fastening assembly.

2. The tunnel steel frame joint connection structure according to claim 1, characterized in that: The mounting frame (3) has through slots (6) on its upper and lower side walls for the passage of the I-shaped steel frame (1).

3. The tunnel steel frame joint connection structure according to claim 1, characterized in that: The buffer assembly (4) includes: a sleeve (7) with one end fixedly connected to a movable plate (5), a sliding column (8) with one end slidably disposed inside the sleeve (7) and the other end fixedly connected to another movable plate (5), a rubber column (10) connected to the sliding column (8) at one end of the sleeve (7), and a high-strength spring (9) sleeved on the outside of the sleeve (7) and connected at both ends to the two movable plates (5) respectively.

4. The tunnel steel frame joint connection structure according to claim 3, characterized in that: There is a gap between the bottom end of the rubber column (10) and the bottom wall of the sleeve (7).

5. The tunnel steel frame joint connection structure according to claim 1, characterized in that: The first fastening assembly includes: an insert plate (11) connected to the side wall of the opening end of a mounting frame (3), a slot (12) disposed on the side wall of another mounting frame (3) for insert plate (11) to be inserted, a fixing groove (13) disposed on the insert plate (11), and a fixing groove (13) disposed on the side wall of the slot (12) and adapted to the elastic pin.

6. The tunnel steel frame joint connection structure according to claim 5, characterized in that: The slot (12) has mounting grooves (14) on its upper and lower inner walls respectively. The elastic pin includes a pin head (15) that is slidably disposed in the mounting groove (14) at one end, and a first spring (16) that connects the pin head (15) and the mounting groove (14). The side of the pin head (15) near the opening of the slot (12) is an inclined surface. The upper and lower ends of the side of the insert plate (11) away from the mounting frame (3) are both provided with inclined surfaces.

7. The tunnel steel frame joint connection structure according to claim 1, characterized in that: The second fastening assembly includes: two mutually symmetrical and slidably disposed on the movable plate (5), a second spring (18) connected between the two fastening plates, a trapezoidal opening (19) disposed on the connecting steel plate (2), and a square snap-fit ​​groove (20) disposed through the connecting steel plate (2) and communicating with the trapezoidal opening (19). The opening end of the trapezoidal opening (19) is the long side of the trapezoid, and the snap-fit ​​groove (20) is disposed on the short side of the trapezoidal opening (19).

8. The tunnel steel frame joint connection structure according to claim 7, characterized in that: The buckle plate (17) includes: a vertical plate (21), a T-shaped slider (22) connected to the lower end of the vertical plate (21), and a horizontal plate (23) disposed at the upper end of the vertical plate (21). The upper surface of the movable plate (5) is provided with a T-shaped groove (24) that slides with the T-shaped slider (22). The top end of the horizontal plate (23) is in contact with the inner wall of the mounting frame (3).

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