A mountain-shaped fastener connecting structure for a trestle fireproof plate

Abstract

The utility model discloses a kind of mountain-shaped fastener connecting structures for trestle fireproof plate, it is related to the technical field of fabricated steel structure trestle, including keel frame being set in the side of trestle, the keel frame is distributed along trestle height direction;Vertical fireproof plate is installed on the keel frame by mountain-shaped fastener component, the mountain-shaped fastener component includes fixed part and movable part, fixed part is in mountain-shaped, fixed part is fixedly installed on the keel frame, movable part is in inverted mountain-shaped, movable part is installed on vertical fireproof plate by fastener;When installing, movable part is inserted into fixed part.This mountain-shaped fastener connecting structure for trestle fireproof plate, by setting keel frame, mountain-shaped fastener component and other structures, it is integrated with the advantages of convenient installation, stable structure, good sealing and maintenance economy, using fixed part and movable part insertion method, it greatly improves construction efficiency, and the stability and reliability of overall structure are ensured by the rigid support system of the main keel and the secondary keel orthogonality.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated steel structure trestle technology, and in particular to a mountain-shaped fastener connection structure for fireproof panels of trestle bridges. Background Technology

[0002] Prefabricated steel structure trestle bridges, with their significant advantages of efficient construction and environmental friendliness, are widely used in material conveying systems in industries such as coal, power, ports, and chemicals. However, steel structures themselves have poor fire resistance and are prone to losing their load-bearing capacity when temperatures reach 450-650℃. Therefore, effective fire protection must be implemented for exposed parts, which is a key link in ensuring the overall structural safety and compliance with regulations. Compared with fire-retardant coatings, the method of using fire-retardant panels may have a slightly higher initial cost, but for modern trestle bridge projects that pursue long-term safety, stable operation, aesthetic appeal, and overall project value, it is undoubtedly a more forward-looking and rational choice with comprehensive advantages.

[0003] When installing prefabricated fireproof panels in traditional rigid or fixed hanging systems, the problem of "misalignment or inability to install" easily arises, increasing the difficulty of installation, resulting in generally low reliability, and limitations in durability and environmental adaptability in complex environments.

[0004] Therefore, it is necessary to propose a mountain-shaped fastener connection structure for fireproof panels on trestle bridges to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a mountain-shaped fastener connection structure for fireproof panels of trestle bridges, so as to solve the problem that the installation of prefabricated fireproof panels in traditional rigid or fixed hanging systems is prone to the dilemma of "not fitting or not being able to be installed", which increases the installation difficulty, has general reliability, and has limited durability and environmental adaptability in complex environments.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mountain-shaped fastener connection structure for fireproof boards of trestle bridges, including a keel frame disposed on the side of the trestle bridge, wherein the keel frame is distributed along the height direction of the trestle bridge;

[0007] Vertical fireproof plates are installed on the keel frame via a mountain-shaped buckle assembly. The mountain-shaped buckle assembly includes a fixed component and a movable component. The fixed component is mountain-shaped and is fixedly installed on the keel frame. The movable component is inverted mountain-shaped and is installed on the vertical fireproof plate by fasteners.

[0008] During installation, the moving part is inserted into the stationary part.

[0009] Preferably, the keel frame includes two main keels distributed along the height direction of the trestle bridge, and multiple secondary keels are fixedly connected between the two main keels. The main keels and secondary keels are distributed perpendicularly, and fixed parts are welded to the corresponding secondary keels.

[0010] Preferably, a support member is fixedly connected to the main keel, the support member is L-shaped, and the support member is fixedly connected to the corrugated plate of the trestle.

[0011] Preferably, the bottom end of the keel frame extends and bends to the lower flange of the lower longitudinal beam of the trestle, and a horizontal fireproof plate is installed at the bend by fasteners.

[0012] Preferably, wall flashing is installed between two adjacent vertical fireproof boards.

[0013] Preferably, the top of the vertical fireproof board at the very top is connected to a wall flashing, and the wall flashing is connected to the roof of the trestle.

[0014] Preferably, fireproof sealant is used to fill the space between two adjacent vertical fireproof boards at the same height.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model integrates the advantages of convenient installation, structural stability, good sealing and economical maintenance by setting up a keel frame and mountain-shaped buckle components. It adopts a fixed and moving part plug-in method, which greatly improves the construction efficiency. At the same time, the rigid support system of the main keel and the secondary keel orthogonal ensures the stability and reliability of the overall structure.

[0017] 2. The modular design of the vertical and horizontal fireproof boards of this utility model provides strong adaptability, and the sealing system composed of fireproof sealant, wall top flashing, and wall surface flashing effectively solves the pain points of traditional methods, becoming an efficient, safe, and economical systematic solution with strong durability and environmental adaptability.

[0018] 3. This utility model adopts a "mountain-shaped fixed component + inverted mountain-shaped moving component" mountain-shaped buckle component design. The fixed component and the moving component are connected by plug-in method to form a hanging structure with a certain fault tolerance space. There is no need to precisely align the bolt holes and other connection points, which solves the installation and adaptation problem of traditional structures. After plugging, a multi-point support structure with surface contact is formed, which evenly transfers the load of the plate to the keel frame, and then the keel frame distributes it to the main structure of the trestle, avoiding structural damage caused by single-point stress.

[0019] 4. This utility model optimizes the force transmission path through the collaborative design of the keel frame and the mountain-shaped buckle component. The keel frame adopts a grid structure of "double main keel + multiple horizontal secondary keel", which is firmly fixed to the corrugated plate of the trestle by L-shaped support members. The bottom end extends and bends to the lower flange of the lower longitudinal beam to form a stable force-bearing frame. Attached Figure Description

[0020] Figure 1 This is a first-view structural diagram of the mountain-shaped fastener connection structure for the fireproof board of the trestle of this utility model.

[0021] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure at point B.

[0023] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point C.

[0024] Figure 5 This is a second-view structural diagram of the mountain-shaped fastener connection structure for the fireproof board of the trestle of this utility model.

[0025] Figure 6 This utility model is a moving part Figure 5 Enlarged schematic diagram of the structure at point D.

[0026] Figure 7 This is a schematic diagram of the structure of the mountain-shaped buckle component of this utility model.

[0027] Figure 8 This is a schematic diagram of the vertical and horizontal fireproof boards of this utility model.

[0028] Figure 9 This utility model Figure 8 Enlarged schematic diagram of the structure at point E in the middle.

[0029] Figure 10 This is a schematic diagram of the moving part structure of this utility model.

[0030] In the diagram: 1. Corrugated board; 2. Lower longitudinal beam; 3. Vertical fireproof board; 4. Main keel; 5. Secondary keel; 6. Mountain-shaped buckle assembly; 601. Fixed component; 602. Moving component; 7. Support component; 8. Wall top flashing; 9. Wall surface flashing; 10. Horizontal fireproof board. Detailed Implementation

[0031] This utility model provides, for example Figures 1-10 The diagram shows a fireproof board connection structure for a trestle using a mountain-shaped fastener, which includes a keel frame set on the side of the trestle. The keel frame is distributed along the height direction of the trestle, and keel frames are set on both sides of the trestle.

[0032] Vertical fireproof boards 3 are installed on the keel frame via mountain-shaped buckle components 6.

[0033] The keel frame includes two main keels 4 distributed along the height direction of the trestle. Support members 7 are fixedly connected to the main keels 4. The support members 7 are L-shaped and fixedly connected to the corrugated plate 1 of the trestle. The main keels 4 are fixedly installed on the corrugated plate 1 by the support members 7. There are multiple support members 7, and the multiple support members 7 are evenly distributed.

[0034] The spacing between two adjacent support members 7 is appropriate, satisfying the structural stress requirements (ensuring the stability of the main keel 4) and the principle of economy (the quantity can be appropriate).

[0035] Multiple secondary keels 5 are fixedly connected between the two main keels 4, and the main keels 4 and secondary keels 5 are distributed perpendicularly.

[0036] The mountain-shaped buckle assembly 6 includes a fixed part 601 and a moving part 602. The fixed part 601 is mountain-shaped and is welded to the corresponding secondary keel 5. The moving part 602 is inverted mountain-shaped and is installed on the vertical fireproof board 3 by fasteners (such as screws).

[0037] In actual use, the arrangement position and quantity of the main keel 4 and secondary keel 5 are determined according to the division module of the vertical fireproof board 3. The number of corresponding mountain-shaped buckle components 6 on each standard vertical fireproof board 3 unit should not be less than 4, and the four sides or the main load-bearing sides can be effectively supported to ensure that each vertical fireproof board 3 can be reliably connected to the secondary keel 5.

[0038] In addition, the bottom end of the keel frame extends and bends to the lower flange of the lower longitudinal beam 2 of the trestle bridge. A secondary keel 5 is also provided at this bend, and a horizontal fireproof plate 10 is installed using fasteners (such as screws).

[0039] During installation, the moving part 602 with its slot facing downwards is directly inserted into the corresponding fixed part 601 to fix a single vertical fireproof board 3. This method is then used to install all vertical fireproof board parts 3 in all positions, and all vertical fireproof board parts 3 are distributed in a matrix.

[0040] A wall flashing 9 is installed between two adjacent vertical fireproof boards 3, and the wall flashing 9 is connected to the vertical fireproof board 3 by fasteners, including screws and other structures. The wall flashing 9 is used to waterproof the area between the two adjacent vertical fireproof boards 3.

[0041] Among them, the wall flashing component 9 has a downward folded edge on the side near the outside of the trestle to form a water-blocking eave, preventing rainwater from directly intruding into the joint, and an upward folded edge on the side near the inside of the trestle to enhance the waterproof effect.

[0042] The top of the vertical fireproof board 3 is overlapped with the wall top flashing 8, and the wall top flashing 8 is connected to the roof of the trestle. The side that overlaps with the top of the vertical fireproof board 3 must have an overlap width of at least 55mm, and be fixed to the top of the vertical fireproof board 3 with self-tapping screws or bolts. The side that connects to the roof of the trestle must adopt the "overlapping in the direction of water flow" method, with an overlap length of not less than 110mm, and can be compacted with sealant to prevent rainwater from flowing back along the overlap joint.

[0043] Fireproof sealant is filled between two adjacent vertical fireproof boards 3 at the same height to ensure the integrity of fire protection and meet the design fire resistance limit. At the same time, it can seal the gaps to prevent rainwater and moisture from entering and causing metal components such as the main keel 4 and secondary keel 5 to rust. It can also compensate for construction errors and minor structural deformations through its flexibility. The selection should match the fire resistance rating, adapt to the complex environment of the trestle bridge, and have good mechanical compatibility and workability.

[0044] During construction, the gaps must be cleaned first, then the glue should be applied evenly with a glue gun and smoothed out. Finally, it should be cured in a suitable environment. The quality must be inspected and accepted by tests of appearance, sealing and fire resistance. Regular inspections are also required in the later stages, and repairs or replacements should be made in a timely manner according to the aging condition to maintain the fireproof and sealing effect in the long term.

[0045] The fireproof board of this trestle uses a mountain-shaped fastener connection structure. By setting up a keel frame and mountain-shaped fastener components 6, it integrates the advantages of convenient installation, structural stability, good sealing and economical maintenance. The fixed component 601 and the moving component 602 are plugged in, which greatly improves the construction efficiency. At the same time, the rigid support system of the main keel 4 and the secondary keel 5 orthogonal ensures the stability and reliability of the overall structure.

[0046] Furthermore, the modular design of the vertical fireproof board 3 and the horizontal fireproof board 10 provides strong adaptability, and the sealing system composed of fireproof sealant, wall top flashing 8, and wall surface flashing 9 effectively solves the pain points of traditional methods, becoming an efficient, safe, and economical system solution with strong durability and environmental adaptability.

[0047] The design of the "mountain-shaped fixed component 601 + inverted mountain-shaped moving component 602" is adopted. The fixed component 601 and the moving component 602 are connected by plugging to form a hanging structure with a certain fault tolerance. There is no need to precisely align the bolt holes and other connection points, which solves the installation and adaptation problem of traditional structures. After plugging, a multi-point support structure with surface contact is formed, which evenly transfers the load of the plate to the keel frame, and then the keel frame distributes it to the main structure of the trestle, avoiding structural damage caused by single-point stress.

[0048] This structure optimizes the force transmission path through the collaborative design of the keel frame and the mountain-shaped buckle component 6. The keel frame adopts a grid structure of "double main keel 4 + multiple horizontal secondary keel 5", which is firmly fixed to the corrugated plate 1 of the trestle by L-shaped support 7. The bottom end extends and bends to the lower flange of the lower longitudinal beam 2 to form a stable force-bearing frame.

[0049] During installation:

[0050] 1. Measure and lay out lines on the corrugated plates 1 on both sides of the trestle to determine the vertical installation position of the main keel 4. Along this position line, at appropriate intervals, fix one end of the support 7 to the corrugated plate 1 by welding. The other end of the support 7 is reserved for connecting the main keel 4.

[0051] 2. Arrange the main keel 4 vertically (along the height direction of the trestle), and weld the main keel 4 firmly to the reserved end of the installed support 7 to ensure that the main keel 4 is vertical and stable;

[0052] 3. Extend and bend the bottom end of the main keel 4 to fix it to the lower flange of the longitudinal beam 2 under the trestle, so as to effectively transfer the load of the entire system to the main structure;

[0053] 4. Arrange the secondary keel 5 horizontally so that it is orthogonal to the main keel 4 to form a stable grid support system. The secondary keel 5 is welded and fixed to the main keel 4. The spacing of the secondary keel 5 must be strictly determined according to the division module of the fireproof board unit to ensure that the four sides or main load-bearing sides of each vertical fireproof board 3 can be effectively supported.

[0054] 5. Take part 601, with its groove facing upwards, accurately align its base with the position and firmly weld it to the upper surface of the installed secondary keel 5. Its function is to serve as the "female seat" for the socket.

[0055] 6. Take the moving part 602, make its groove face down, and use 4 fasteners (such as screws) to pre-fix it in the designed position on the back of the vertical fireproof board 3. The number of corresponding mountain-shaped buckle components 6 on each standard vertical fireproof board 3 unit shall not be less than 4.

[0056] 7. The installation of the vertical fireproof board 3 follows the principle of from bottom to top and from corner to center, and is carried out in conjunction with the installation of the wall flashing 9;

[0057] 8. Lift up the vertical fireproof board 3 unit with the pre-fixed moving part 602, so that the groove of the moving part 602 faces downward and is precisely aligned with the fixed part 601 with the groove facing upward welded on the secondary keel 5, and then insert it downward to complete the hanging of the first board.

[0058] 9. Before installing the second adjacent vertical fireproof board 3, the wall flashing 9 adjacent to this board joint must be installed in place to ensure that it has a correct overlap with the edge of the installed vertical fireproof board 3.

[0059] 10. Repeat this process, first install the wall flashing 9 at a specific location, and then install the adjacent vertical fireproof board 3, so that the wall flashing 9 is pressed under or between the adjacent vertical fireproof board 3 to form an effective waterproof barrier.

[0060] 11. For the horizontal fireproof board 10 located at the lower flange of the lower longitudinal beam 2, fasteners are used to directly connect it to the corresponding secondary keel 5;

[0061] 12. After all the vertical fireproof boards 3 and horizontal fireproof boards 10 are installed, clean the vertical joints formed between the board units, and then fill them with fireproof sealant with a fire resistance rating that matches the fire resistance rating.

[0062] 13. Finally, install the wall top flashing 8 on the top of the firewall. One end of the flashing is fixed to the trestle roof structure with fasteners, and the other end should be sufficient to cover the top edge of the vertical fireproof board 3 to form the final full roof waterproof capping.

Claims

1. A fireproof board connection structure for trestle bridges using a mountain-shaped fastener, comprising a keel frame disposed on the side of the trestle bridge, characterized in that: The keel frame is distributed along the height direction of the trestle bridge; A vertical fireproof plate (3) is installed on the keel frame by a mountain-shaped buckle assembly (6). The mountain-shaped buckle assembly (6) includes a fixed part (601) and a movable part (602). The fixed part (601) is mountain-shaped and is fixedly installed on the keel frame. The movable part (602) is inverted mountain-shaped and is installed on the vertical fireproof plate (3) by fasteners. During installation, the moving part (602) is inserted into the fixed part (601).

2. The zigzag fastener connection structure for fireproof panels of trestle bridges according to claim 1, characterized in that: The keel frame includes two main keels (4) distributed along the height direction of the trestle bridge. Multiple secondary keels (5) are fixedly connected between the two main keels (4). The main keels (4) and the secondary keels (5) are distributed perpendicularly, and the fixing parts (601) are welded to the corresponding secondary keels (5).

3. The zigzag fastener connection structure for fireproof panels of trestle bridges according to claim 2, characterized in that: A support member (7) is fixedly connected to the main keel (4). The support member (7) is L-shaped and is fixedly connected to the corrugated plate (1) of the trestle.

4. The zigzag fastener connection structure for fireproof panels of trestle bridges according to claim 1, characterized in that: The bottom end of the keel frame extends and bends to the lower flange of the lower longitudinal beam (2) of the trestle, and a horizontal fireproof plate (10) is installed at the bend by fasteners.

5. The zigzag fastener connection structure for fireproof panels of trestle bridges according to claim 1, characterized in that: Wall flashing (9) is installed between two adjacent vertical fireproof boards (3).

6. The zigzag fastener connection structure for fireproof panels of trestle bridges according to claim 1, characterized in that: The top of the vertical fireproof board (3) is connected to the top of the wall flashing (8), and the top flashing (8) is connected to the roof of the trestle.

7. The zigzag fastener connection structure for fireproof panels of trestle bridges according to claim 1, characterized in that: Fireproof sealant is filled between two adjacent vertical fireproof boards (3) at the same height.

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