Quickly built temporary steel bridge

Abstract

The invention relates to a fast building type temporary steel bridge, and belongs to the field of bridge engineering, the fast building type temporary steel bridge comprises a pier column, a plurality of bailey frame beams, a floor steel plate and a plurality of framework cross beams, the bailey frame beams are erected on the top of the pier column, the two bailey frame beams are arranged in parallel, the framework cross beams are arranged in an array mode in the length direction of the bailey frame beams, and the floor steel plate is arranged on the floor steel plate. Each bailey frame beam is erected on the two bailey frame beams at the same time, the floor steel plates are laid on the framework cross beams, the technical connecting beams are detachably connected with the framework cross beams at the same time, and the technical connecting beams are located between the two bailey frame beams and used for being connected with hoisting equipment. According to the technical coupling beam, hoisting movement of a plurality of framework cross beams is controlled at the same time at a time, and the building efficiency of the framework cross beams is improved.

Description

Technical Field

[0001] This application relates to the field of bridge engineering, and in particular to a rapid-assembly steel temporary bridge. Background Technology

[0002] A steel temporary bridge is a temporary bridge constructed primarily of steel, with its core design objective being to meet short-term traffic needs. Compared to permanent bridges, its significant characteristics are modularity, standardization, and rapid assembly. It typically uses Bailey bridge beams as its core component, assembled via bolts or welding.

[0003] In related technologies, a temporary steel bridge includes piers, Bailey bridge beams, frame beams, and temporary steel plates. The bottom of the piers is fixedly connected to the foundation or riverbed, and the top of the piers supports the Bailey bridge beams. There are two parallel Bailey bridge beams, both ends of which are connected to the ground. The length direction of the Bailey bridge beams is the length direction of the temporary steel bridge. Multiple frame beams are arranged oriented along the Bailey bridge beams, and the length direction of the frame beams is the width direction of the temporary steel bridge. The two ends of each frame beam rest on the two Bailey bridge beams. Temporary steel plates are then laid on the frame beams to form the bridge deck. Necessary connections and fixation are made at each node, and the temporary steel bridge is then completed.

[0004] The main structure of a Bailey bridge consists of a rectangular frame and a perforated frame located inside the rectangular frame. These two structures are fixedly connected. The crossbeams are positioned inside the rectangular frame and below the perforated frame, thus the Bailey bridge can also serve as bridge railings. Because the space between the perforated frame and the inner wall of the rectangular frame is small, and the length of the crossbeams is greater than the distance between two Bailey bridge beams, the operation of placing the crossbeams is as follows: the crossbeam is passed laterally from the outside to the inside of one Bailey bridge beam, reaches another Bailey bridge beam, and then exits from the inside to the outside, allowing the crossbeam to span two Bailey bridge beams simultaneously. Since the Bailey bridge beams obstruct the space above the crossbeams, this operation is time-consuming and labor-intensive when there are many crossbeams. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a quick-assembly steel temporary bridge.

[0006] This application provides a rapid-assembly steel temporary bridge using the following technical solution:

[0007] A rapid-assembly steel temporary bridge includes piers, multiple Bailey bridge beams, a floor steel plate, and multiple skeleton crossbeams. The Bailey bridge beams are erected on top of the piers, with two Bailey bridge beams arranged side by side. The multiple skeleton crossbeams are arranged in an array along the length of the Bailey bridge beams, with each Bailey bridge beam erected simultaneously on two Bailey bridge beams. The floor steel plate is laid on the skeleton crossbeams. The bridge also includes a process connecting beam, which is detachably connected to multiple skeleton crossbeams. The process connecting beam is located between two Bailey bridge beams and is used for connecting hoisting equipment.

[0008] Preferably, the frame beam is an I-beam, and the frame beam includes two structural horizontal plates and one structural vertical plate that are fixedly connected. The process connecting beam is provided with multiple mating grooves for the structural horizontal plates to be inserted. The length direction of the process connecting beam is perpendicular to the length direction of the frame beam. The process connecting beam is provided with fasteners for fixing the process connecting beam and the frame beam relative to each other.

[0009] Preferably, the fastener is a locking bolt, which passes through the process connecting beam. The frame beam has a connecting threaded hole for the locking bolt to be screwed into.

[0010] Preferably, auxiliary connecting beams are detachably connected to the plurality of skeleton crossbeams. The length direction of the auxiliary connecting beams is parallel to the length direction of the process connecting beams. The auxiliary connecting beams are located on the side of one of the Bailey bridge beams away from the process connecting beams. When the process connecting beam is in contact with one of the Bailey bridge beams and the auxiliary connecting beam is in contact with another Bailey bridge beam, the distance between the center point of the length of the skeleton crossbeam and the two Bailey bridge beams is equal.

[0011] Preferably, a single Bailey bridge beam comprises multiple Bailey unit frames arranged in parallel, the arrangement direction of the multiple Bailey unit frames is parallel to the length direction of the frame beam, and a distance control device for changing the distance between two adjacent Bailey unit frames is provided.

[0012] Preferably, the Bailey bridge beam includes three Bailey unit frames, and the distance control element is a distance control link. One end of the distance control link is hinged to one of the Bailey unit frames, and the other end is hinged to the adjacent Bailey unit frame. The hinge axis is perpendicular to the length direction of the frame beam.

[0013] Preferably, the Bailey unit frame located on both sides is provided with a fixed-distance threaded rod, and the Bailey unit frame located in the middle is provided with a fixed-distance threaded hole. When the length direction of the control rod is parallel to the length direction of the frame beam, the fixed-distance threaded hole can be used to coaxially screw in the fixed-distance threaded rod.

[0014] Preferably, the Bailey unit frames on both sides are also provided with receiving threaded rods, the length direction of which is parallel to the length direction of the fixed-distance threaded rod. When the Bailey unit frames on both sides and the Bailey unit frame in the middle are in contact, the fixed-distance threaded holes can be used to coaxially screw in the receiving threaded rods.

[0015] Preferably, a fixing bolt is provided on the floor steel plate, and a fixing nut ring is fixedly connected to the frame beam. The fixing bolt passes coaxially through the fixing nut ring and is threadedly connected to the Bailey bridge beam.

[0016] This application includes at least one of the following beneficial technical effects:

[0017] 1. By setting up process connecting beams, multiple skeleton beams are first passed through one of the Bailey bridge beams, and then the process connecting beams are used to connect the various skeleton beams on the inside of the Bailey bridge beams. After that, the hoisting equipment is connected to the process connecting beams, so that all the skeleton beams connected to it can be moved at the same time through the process connecting beams, which improves the operation efficiency during the installation of skeleton beams.

[0018] 2. By setting up multiple Bailey unit frames, the width of the Bailey frame beams is increased, the number of support points for the frame beams is increased, and the stability of the support state is higher. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the rapid-assembly steel temporary bridge used in the embodiments of this application.

[0020] Figure 2 This is a structural cross-sectional schematic diagram used in the embodiments of this application to illustrate the rapid-assembly steel temporary bridge.

[0021] Figure 3 This is a structural cross-sectional schematic diagram used in the embodiments of this application to illustrate the Bailey bridge beam in its unfolded state.

[0022] Figure 4 This is a structural cross-sectional schematic diagram used in the embodiments of this application to illustrate the folded state of the Bailey bridge beam.

[0023] Figure 5 This is a schematic diagram illustrating the cooperative structure of the process connecting beam and the frame beam in the embodiments of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Pier column; 11. Cap beam; 2. Bailey bridge beam; 21. Bailey unit frame; 22. Spacing control link; 23. Spacing threaded hole; 24. Spacing threaded rod; 25. Threaded rod storage; 26. Rectangular frame; 27. Hollowed-out frame; 3. Skeleton crossbeam; 31. Structural horizontal plate; 32. Structural vertical plate; 33. Connecting threaded hole; 34. Fixing nut ring; 35. Process connecting beam; 351. Mating groove; 36. Fastener; 37. Auxiliary connecting beam; 4. Floor steel plate; 41. Fixing bolt. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This application discloses a rapid-assembly steel temporary bridge, such as... Figure 1 and 2 As shown, the bridge includes piers 1, multiple Bailey bridge beams 2, multiple crossbeams 3, and multiple floor steel plates 4. Piers 1 are inserted into and fixed to the riverbed, and a cap beam 11 structure is installed on top of each pier 1. The Bailey bridge beams 2 are erected and fixed to the cap beams 11 of the piers 1. There are two Bailey bridge beams 2 arranged side-by-side, and multiple crossbeams 3 are laid on them along their length. The floor steel plates 4 are located between two Bailey bridge beams 2 and are evenly laid on the crossbeams 3 to form the bridge deck.

[0027] like Figure 1 and 2 As shown, the length direction of the Bailey bridge girder 2 is the same as the length direction of the bridge. A single Bailey bridge girder 2 consists of three Bailey unit frames 21 arranged side by side. Each Bailey unit frame 21 is welded together with a rectangular frame 26 and a hollow frame 27. The hollow frame 27 is X-shaped and located inside the rectangular frame 26. The skeleton beam 3 passes through the rectangular frame 26 and is located below the center of gravity of the hollow frame 27. The length direction of the skeleton beam 3 is the width direction of the bridge. The bottom sidewall of the skeleton beam 3 abuts against the inner bottom side of the rectangular frame 26, meaning that each skeleton beam 3 simultaneously contacts the inner wall of the rectangular frame 26 of all six Bailey unit frames 21. Thus, the Bailey bridge girder 2 not only supports the skeleton beam 3 but also serves as a side railing of the bridge.

[0028] like Figure 1 As shown, during assembly, the Bailey bridge beam 2 is first erected and fixed on the pier column 1. Then, the skeleton beam 3 is passed from the outside to the inside of one side of the Bailey bridge beam 2. Then, the ends of each skeleton beam 3 are passed from between the two Bailey bridge beams 2 to the outside of the other side of the Bailey bridge beam 2, thus completing the erection of the skeleton beam 3 on the two Bailey bridge beams 2.

[0029] like Figure 1 , 3As shown in Figure 4, a spacing control element for changing the distance between two adjacent Bailey unit frames 21 is provided. The spacing control element is a spacing control link 22. One end of the spacing control link 22 is hinged to one of the Bailey unit frames 21, and the other end is hinged to the adjacent Bailey unit frame 21. The hinge axis is perpendicular to the length direction of the frame beam 3. In this embodiment, the hinge axis is parallel to the length direction of the Bailey unit frame 21. There are two spacing control links 22 in the vertical direction, and the length directions of the two spacing control links 22 are parallel. At this time, the two Bailey unit frames 21 form a parallelogram mechanism through the spacing control link 22. During the flipping process, the two adjacent Bailey unit frames 21 always remain parallel and side by side.

[0030] like Figure 3 and 4 As shown, the Bailey bridge unit frame 21 in the middle has fixed-distance threaded holes 23 on both sides. Fixed-distance threaded rods 24 and storage threaded rods 25 can be inserted into the Bailey bridge unit frames 21 on both sides. When the length direction of the control link 22 is parallel to the length direction of the frame beam 3, the fixed-distance threaded holes 23 allow the fixed-distance threaded rods 24 to be screwed in coaxially. At this time, the distance between two adjacent Bailey bridge unit frames 21 reaches its maximum value, and the control link 22 can no longer swing relative to the Bailey bridge unit frame 21. In the horizontal projection, the two adjacent Bailey bridge unit frames 21 are basically overlapping. When the Bailey bridge unit frames 21 on both sides swing to contact the Bailey bridge unit frame 21 in the middle, the fixed-distance threaded holes 23 allow the storage threaded rods 25 to be screwed in coaxially. The control link 22 can no longer swing relative to the Bailey bridge unit frame 21. At this time, the two adjacent Bailey bridge unit frames 21 are close to each other, and the Bailey bridge beam 2 is in a stored state, which is convenient for transportation and storage. During the construction of Bailey bridge 2, the Bailey bridge 2 is first unfolded on the ground and the spacer threaded rod 24 is screwed in. Then, the Bailey bridge 2 is hoisted as a whole onto the pier column 1 for fixation.

[0031] like Figure 1 , 2 As shown in Figure 5, after the Bailey bridge girder 2 is fixed, the frame crossbeams 3 are then erected. In order to control multiple frame crossbeams 3 simultaneously, the temporary steel bridge also includes a process connecting beam 35. First, multiple frame crossbeams 3 pass through one of the Bailey bridge girder 2 at the same time. Then, the process connecting beam 35 is detachably connected between two Bailey bridge girder 2 and each frame crossbeam 3, thus establishing a connection relationship between the frame crossbeams 3. The process connecting beam 35 is also used for connecting hoisting equipment, meaning that the hoisting equipment can simultaneously lift multiple frame crossbeams 3 through the process connecting beam 35.

[0032] like Figure 5As shown, the frame beam 3 is an I-beam, comprising two integrally formed structural horizontal plates 31 and a structural vertical plate 32. A process connecting beam 35 is located above the frame beam 3, and multiple mating grooves 351 are provided below the process connecting beam 35. Each mating groove 351 allows one structural horizontal plate 31 located above the frame beam 3 to be inserted. The length direction of the process connecting beam 35 is perpendicular to the length direction of the frame beam 3. In this embodiment, a single process connecting beam 35 can span and mate with seven frame beams 3 at a time. The process connecting beam 35 is provided with fixing members 36 for fixing the process connecting beam 35 and the frame beam 3. The fixing members 36 are locking bolts, which are vertically inserted into the process connecting beam 35. A connecting threaded hole 33 is provided on the structural horizontal plate 31 above the frame beam 3, into which the locking bolt is screwed, thereby achieving the connection and fixation of the process connecting beam 35 and the frame beam 3. In this embodiment, the number of locking bolts corresponds to the number of frame beams 3.

[0033] like Figure 1 and 2 As shown, it also includes an auxiliary connecting beam 37. The length direction of the auxiliary connecting beam 37 is parallel to the length direction of the process connecting beam 35. The auxiliary connecting beam 37 is located on the side of one of the Bailey bridge beams 2 away from the process connecting beam 35 and is also connected to multiple skeleton crossbeams 3. The structure, connection method and number of the auxiliary connecting beam 37 and the skeleton crossbeams 3 are the same as those of the process connecting beam 35, and will not be described in detail here. The auxiliary connecting beam 37 and the process connecting beam 35 form two force application points for the skeleton crossbeam 3 to be lifted by the hoisting equipment. When the process connecting beam 35 contacts the inner side of one of the Bailey bridge beams 2 and the auxiliary connecting beam 37 contacts the outer side of the other Bailey bridge beam 2, the distance between the center point of the skeleton crossbeam 3 and the two Bailey bridge beams 2 is equal, and at this time the skeleton crossbeam 3 is hoisted into place.

[0034] like Figure 2 As shown, in one specific embodiment, a fixing nut ring 34 is welded and fixed to the structural cross plate 31 of the frame beam 3, and the axis of the fixing nut ring 34 is vertical. A fixing bolt 41 is passed through the floor steel plate 4, and the length direction of the fixing bolt 41 is also vertical. A fixing nut ring 34 for the fixing bolt 41 to screw into is welded and fixed to the frame beam 3. The fixing bolt 41 passes coaxially through the fixing nut ring 34 and is threadedly connected to the frame beam 3, thereby realizing the fixed connection of the floor steel plate 4, the frame beam 3 and the Bailey bridge beam 2.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fast-erected steel temporary bridge, comprising a pier column (1), a plurality of Bailey beams (2), a floor steel plate (4) and a plurality of skeleton cross beams (3), the Bailey beams (2) are erected on the top of the pier column (1), two of the Bailey beams (2) are arranged side by side, a plurality of the skeleton cross beams (3) are arranged in an array along the length direction of the Bailey beams (2), each of the Bailey beams (2) is erected on two of the Bailey beams (2) at the same time, and the floor steel plate (4) is laid on the skeleton cross beams (3), characterized in that: It also comprises a process connecting beam (35) which is detachably connected with multiple framework cross beams (3) simultaneously, is located between two bailey beams (2), and is used for connecting hoisting equipment.

2. The quick-erected steel temporary bridge according to claim 1, characterized in that: The framework cross beam (3) is an I-beam, comprises two structure horizontal plates (31) and a structure vertical plate (32) which are fixedly connected, and is provided with multiple matching grooves (351) on the process connecting beam (35), the matching grooves (351) are used for inserting the structure horizontal plates (31), the length direction of the process connecting beam (35) is perpendicular to the length direction of the framework cross beam (3), and the process connecting beam (35) is provided with a fixing member (36) which is used for relatively fixing the process connecting beam (35) and the framework cross beam (3).

3. The quick-erected steel temporary bridge according to claim 2, characterized in that: The fixing member (36) is a locking bolt which is arranged on the process connecting beam (35), and the framework cross beam (3) is provided with a connecting threaded hole (33) which is used for screwing the locking bolt.

4. The quick-erected steel temporary bridge according to claim 2 or 3, characterized in that: Multiple framework cross beams (3) are detachably connected with an auxiliary connecting beam (37), the length direction of the auxiliary connecting beam (37) is parallel to the length direction of the process connecting beam (35), the auxiliary connecting beam (37) is located on the side of one bailey beam (2) which is away from the process connecting beam (35), the distance between the length center point of the framework cross beam (3) and the two bailey beams (2) is equal when the process connecting beam (35) and one bailey beam (2) are in contact and the auxiliary connecting beam (37) and the other bailey beam (2) are in contact.

5. The quick-erected steel temporary bridge according to any one of claims 1-3, characterized in that: Single bailey beam (2) comprises multiple bailey unit frames (21) which are arranged in parallel, the arrangement direction of the multiple bailey unit frames (21) is parallel to the length direction of the framework cross beam (3), and a distance control member is arranged between two adjacent bailey unit frames (21) and is used for changing the distance between the two bailey unit frames (21).

6. The quick-erected steel temporary bridge according to claim 5, characterized in that: Single bailey beam (2) comprises three bailey unit frames (21), the distance control member is a distance control connecting rod (22), one end of the distance control connecting rod (22) is hinged to one bailey unit frame (21), the other end is hinged to the bailey unit frame (21) which is adjacent to the one bailey unit frame (21), and the hinge axes are perpendicular to the length direction of the framework cross beam (3).

7. The quick-erected steel temporary bridge according to claim 6, characterized in that: Distance threaded rods (24) are arranged on the bailey unit frames (21) which are located at two sides, distance threaded holes (23) are arranged on the bailey unit frame (21) which is located in the middle, and the distance threaded holes (23) can be coaxially screwed into the distance threaded rods (24) when the length direction of the distance control connecting rod (22) is parallel to the length direction of the framework cross beam (3).

8. The quick-erected steel temporary bridge according to claim 7, characterized in that: Accommodation threaded rods (25) are also arranged on the bailey unit frames (21) which are located at two sides, the length direction of the accommodation threaded rods (25) is parallel to the length direction of the distance threaded rods (24), and the distance threaded holes (23) can be coaxially screwed into the accommodation threaded rods (25) when the bailey unit frames (21) which are located at two sides are in contact with the bailey unit frame (21) which is located in the middle.

9. The quick-erected steel temporary bridge according to any one of claims 1-3, characterized in that: The floor steel plate (4) is provided with fixing bolts (41), and the frame beam (3) is fixedly connected with fixing nut rings (34). The fixing bolts (41) pass through the fixing nut rings (34) coaxially and are threadedly connected to the Bailey beam (2).

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