Road assembly type temporary steel bridge

Abstract

The utility model provides a road assembly type temporary steel bridge, and relates to the technical field of temporary steel bridges, the road assembly type temporary steel bridge comprises a prefabricated sleeper beam and assembled bridge plates, the prefabricated sleeper beam is arranged outside a shaft mouth, and the assembled bridge plates are spliced and laid on the prefabricated sleeper beam; the assembled bridge plate comprises a bridge deck component and a beam component, the beam component is connected to the bottom of the bridge deck component, a hanging ring hole is formed in the bridge deck component and located above the beam component, a hanging ring is connected to the position of the hanging ring hole in the beam component in a sleeved mode, and the inner diameter height of the hanging ring is larger than the height of the beam component. The prefabricated sleeper beams and the assembled bridge plates are prefabricated and assembled, so that the road occupation time of on-site construction can be shortened through assembled construction. When the hanging ring is free, the top of the inner diameter of the hanging ring makes contact with the top of the beam component and is hidden, and the bottom of the inner diameter and the bottom of the beam component form a hole. When the hanging ring is pulled up for use, the inner diameter top of the hanging ring and the top of the beam component form a hole for hanging use, and the inner diameter bottom of the hanging ring makes contact with the bottom of the beam component to hang the assembled bridge plate.

Description

Technical Field

[0001] This utility model relates to the field of steel temporary bridge technology, and in particular to a prefabricated steel temporary bridge for roads. Background Technology

[0002] To minimize the impact on urban residents' lives, old city renovation and urban renewal projects often employ trenchless construction methods for various infrastructure projects. However, the vertical shafts used in trenchless methods are frequently unavoidable within road areas, generally requiring continuous traffic flow during the day. Therefore, it is necessary to cover the shafts with temporary steel bridges during the day for traffic and remove the bridges at night for construction. Currently, the use of temporary steel bridges varies greatly, and their construction is complex and time-consuming.

[0003] In existing technologies, such as Chinese patent CN213653175U, authorized on July 9, 2021, a concealed pull ring that can be pulled up and down is installed inside the steel temporary bridge. The pull ring is hidden inside the steel temporary bridge when traffic is flowing, and is pulled up to suspend the steel temporary bridge when it is open. However, this type of existing technology requires the fabrication of a special pull ring fixing assembly, which involves welding a fixing plate to the bottom of the concealed groove, drilling holes in the fixing plate, and connecting the pull ring with bolts. This results in a complex structure, cumbersome manufacturing process, and reduced construction efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated steel temporary bridge for roads, which can achieve a hidden movable lifting ring with a simpler structure, making the processing more convenient and faster, and the construction efficiency higher.

[0005] This utility model provides a prefabricated steel temporary bridge for roads, including prefabricated sleeper beams and assembled bridge decks. The prefabricated sleeper beams are set outside the shaft opening, and multiple assembled bridge decks are spliced ​​and laid on the prefabricated sleeper beams. The assembled bridge decks include bridge deck components and beam components. The beam components are connected to the bottom of the bridge deck components. The bridge deck components have lifting ring holes, which are located above the beam components. Lifting rings are fitted onto the beam components at the positions of the lifting ring holes, and the inner diameter height of the lifting rings is greater than the height of the beam components.

[0006] Furthermore, the beam component includes a main beam and a secondary beam, which are staggered and connected to the bottom of the bridge deck component, and the lifting ring is sleeved on the secondary beam.

[0007] Furthermore, the lifting ring is fitted onto the secondary beams at the four corners of the bottom of the bridge deck component.

[0008] Furthermore, the lifting ring is made of magnetic material.

[0009] Furthermore, the precast sleeper beams are installed at both ends of the shaft opening along the driving direction. The front and rear ends of the assembled bridge deck overlap the precast sleeper beams. A precast outer ring beam is connected to the top periphery of the precast sleeper beams, and the precast outer ring beams connect upwards to the road surface.

[0010] Furthermore, the prefabricated outer ring beam includes a first outer ring beam and a second outer ring beam; the two first outer ring beams are respectively disposed at the front and rear ends along the driving direction and connected to the prefabricated sleeper beam to form an L-shaped outer wall structure; the two second outer ring beams are respectively disposed at the left and right ends along the driving direction and installed at both ends on the prefabricated sleeper beam.

[0011] Furthermore, the ends of the first outer ring beam and the ends of the second outer ring beam are connected by a tenon and mortise joint at the corner.

[0012] Furthermore, a rubber pad is provided at the bottom of the assembled bridge deck where it contacts the precast sleeper beam, and a rubber pad is provided at the side of the assembled bridge deck where it contacts the precast outer ring beam.

[0013] Furthermore, rubber pads are provided at the side contact positions of adjacent assembled bridge plates.

[0014] Furthermore, the surface of the bridge deck components is sprayed with colored epoxy asphalt anti-slip particles containing corundum.

[0015] This invention utilizes prefabricated sleeper beams for assembly and prefabricated bridge deck assembly, enabling efficient and rapid prefabricated construction and reducing on-site construction time. The lifting ring holes are located above the beam members, and the lifting rings are directly fitted onto them. When the lifting ring is free, its inner diameter top contacts the top of the beam member and is hidden, while its inner diameter bottom forms a hole with the bottom of the beam member. When the lifting ring is pulled up for use, its inner diameter top forms a hole with the top of the beam member, allowing for suspension, while its inner diameter bottom contacts the bottom of the beam member to lift and assemble the bridge deck. Therefore, this invention eliminates the need for other fixed lifting ring structures, making processing more convenient and faster, and increasing construction efficiency. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a top view of the structure of this utility model;

[0018] Figure 2This is a top view and perspective view of the vertical shaft below the present invention, wherein the dashed lines represent the outline of the vertical shaft;

[0019] Figure 3 This is a schematic diagram of the main beam and secondary beam structure of this utility model, where the dashed lines represent the outline of the vertical shaft;

[0020] Figure 4 This utility model Figure 2 AA section view;

[0021] Figure 5 This utility model Figure 2 BB section view;

[0022] Figure 6 This utility model Figure 2 and Figure 3 CC section view;

[0023] Figure 7 This utility model Figure 6 Enlarged view of point E;

[0024] Figure 8 This utility model Figure 2 and Figure 3 DD sectional view;

[0025] Figure 9 This utility model Figure 7 Enlarged view at point F;

[0026] Figure 10 This is a schematic diagram showing the state of the lifting ring being pulled out of the lifting ring hole in Embodiment 1 of this utility model;

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Precast sleeper beam;

[0029] 2-Assembled bridge deck; 21-Bridge deck components; 211-Lifting ring holes; 22-Beam components; 221-Main beam; 222-Secondary beam; 23-Lifting ring;

[0030] 3-Vertical shaft; 31-Traffic direction;

[0031] 4-Precast outer ring beam; 41-First outer ring beam; 42-Second outer ring beam; 43-Connecting corner;

[0032] 5-Rubber pad; 6-Epoxy asphalt anti-skid granules; 7-Road surface. Detailed Implementation

[0033] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. 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.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" 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; 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.

[0036] Example 1

[0037] like Figures 1-10 As shown, this utility model provides a prefabricated steel temporary bridge for roads, including prefabricated sleeper beams 1 and assembled bridge decks 2. The prefabricated sleeper beams 1 are set outside the opening of the vertical shaft 3, and multiple assembled bridge decks 2 are spliced ​​and laid on the prefabricated sleeper beams 1. The assembled bridge deck 2 includes a bridge deck component 21 and a beam component 22. The beam component 22 is connected to the bottom of the bridge deck component 21. The bridge deck component 21 has a lifting ring hole 211, which is located above the beam component 22. A lifting ring 23 is fitted on the beam component 22 at the position of the lifting ring hole 211. The inner diameter height of the lifting ring 23 is greater than the height of the beam component 22.

[0038] Specifically, the existing steel temporary bridge sleeper beams and outer ring beams are made by cast-in-place, which takes a long time and is very troublesome to construct on site; while this utility model adopts prefabricated sleeper beams 1 and outer ring beams for assembly, and the temporary bridge is prefabricated and assembled, which can realize efficient and fast assembly construction and shorten the time occupied by on-site construction.

[0039] The length direction of the assembled bridge plate 2 is the direction of vehicle travel, and multiple assembled bridge plates 2 are spliced ​​together from side to side in the width direction, fully covering the opening of the vertical shaft 3.

[0040] This utility model's temporary steel bridge adopts a segmented hoisting method. Each segment of the temporary steel bridge has concealed movable lifting rings 23 at its four corner secondary beams 222. During hoisting, magnets are used to attract the lifting rings 23. When the temporary bridge is in use, the lifting rings 23 are concealed, not affecting vehicle traffic. The lifting ring holes 211 are located above the beam members 22, and the lifting rings 23 are directly fitted onto the beam members 22. When the lifting ring 23 is free, its inner diameter top contacts the top of the beam member 22 and is hidden, while its inner diameter bottom forms a hole with the bottom of the beam member 22. When the lifting ring 23 is pulled up for use, its inner diameter top forms a hole with the top of the beam member 22, allowing it to be suspended, while its inner diameter bottom contacts the bottom of the beam member 22. Therefore, this utility model eliminates the need for other structures to fix the lifting rings 23, making processing more convenient and faster, and increasing construction efficiency. Furthermore, the top ring width of the lifting ring 23 is no greater than the thickness of the bridge deck member 21 to prevent the top of the lifting ring 23 from protruding from the bridge deck member 21 when concealed, causing unevenness on the road surface 7.

[0041] The precast sleeper beam 1 and outer ring beam are made of C30 concrete and HRB400 steel bars. The assembled bridge deck 2 is made of Q235B or Q335B steel.

[0042] Example 2

[0043] The beam component 22 includes a main beam 221 and a secondary beam 222, which are staggered and connected to the bottom of the bridge deck component 21. A lifting ring 23 is fitted onto the secondary beam 222. The lifting ring 23 is fitted onto the secondary beam 222 at the four corners of the bottom of the bridge deck component 21.

[0044] Specifically, the assembled bridge deck 2 is constructed using steel profiles (main and secondary beams 222 structure), i.e., welded steel plates. The spacing between the main beams 221 does not exceed 500mm, and the spacing between the secondary beams 222 does not exceed 1800mm. Strict control is exercised over the deformation of the temporary bridge (deformation not exceeding L / 500). Standardization of the steel temporary bridge is implemented to achieve reuse and improve resource utilization efficiency. The main beams 221 and secondary beams 222 are welded alternately to the bottom of the bridge deck component 21, with the height of the main beams 221 higher than that of the secondary beams 222, making the bottom of the secondary beams 222 higher than the bottom of the main beams 221. Lifting rings 23 are fitted onto the secondary beams 222 at the four corners of each assembled bridge deck 2.

[0045] Example 3

[0046] The hanging ring 23 is made of magnetic material.

[0047] Specifically, when lifting and assembling bridge plate 2, a magnet is used to attract the lifting ring 23. When the temporary bridge is in use, the magnet is demagnetized, and the lifting ring 23 falls down and is hidden inside the assembled bridge plate 2. The material of the lifting ring 23 can be, for example, HPB300 steel, which can be attracted by a magnet.

[0048] Example 4

[0049] Precast sleeper beams 1 are installed at both ends of the shaft opening 3 along the driving direction 31. The front and rear ends of the assembled bridge deck 2 overlap the precast sleeper beams 1. A precast outer ring beam 4 is connected to the top periphery of the precast sleeper beams 1, and the precast outer ring beam 4 connects upward to the road surface 7. The precast outer ring beam 4 includes a first outer ring beam 41 and a second outer ring beam 42. The two first outer ring beams 41 are respectively installed at the front and rear ends along the driving direction 31 and connected to the precast sleeper beams 1 to form an L-shaped outer wall structure. The two second outer ring beams 42 are respectively installed at the left and right ends along the driving direction 31 and are installed on the precast sleeper beams 1 at both ends. The ends of the first outer ring beams 41 and the ends of the second outer ring beams 42 are connected by mortise and tenon joints at the corner 43.

[0050] Specifically, a reinforced concrete outer ring beam is installed between the temporary bridge and the road to ensure the stability of the temporary bridge's perimeter, smooth connection, and comfortable driving. The first outer ring beam 41 connects to the precast sleeper beam 1 to form an L-shaped outer wall structure, achieving a front-to-back enclosure effect; the second outer ring beam 42 connects to the left and right ends of the precast sleeper beam 1, achieving a left-to-right enclosure effect. The first and second outer ring beams 41 and 42 are precast and assembled, and the corner connections use mortise and tenon structures, further enabling rapid assembly construction. Insert blocks are provided at the bottom of both ends of the first and second outer ring beams 41 and 42, and slots are provided on the sleeper beams at the corresponding positions of the insert blocks. By embedding the insert blocks into the slots, the outer ring beams and sleeper beams can be quickly connected.

[0051] If the length of the shaft 3 is relatively long, the volume of the whole prefabricated outer ring beam 4 may be too large and inconvenient to transport and manufacture. In this case, the second outer ring beam 42 can be divided into multiple spliced ​​beams that are spliced ​​end to end. Each spliced ​​beam is also connected by mortise and tenon structure, which is more convenient.

[0052] Both the bolster beam and the outer ring beam are prefabricated and assembled on site. The corners of the outer ring beam are connected by mortise and tenon joints to improve on-site construction efficiency. The surface is leveled by spraying epoxy asphalt anti-slip granules 6 (with a certain amount of corundum mixed in) to achieve the desired elevation.

[0053] Example 5

[0054] Rubber pads 5 are provided at the bottom of the assembled bridge deck 2 where it contacts the precast sleeper beam 1, and rubber pads 5 are also provided at the side of the assembled bridge deck 2 where it contacts the precast outer ring beam 4. Rubber pads 5 are also provided at the side contact points of adjacent assembled bridge decks 2. The surface of the bridge deck component 21 is sprayed with colored epoxy asphalt anti-slip particles 6 mixed with corundum.

[0055] Specifically, in addition to the problems mentioned in the background technology, existing steel temporary bridges often experience noise pollution during assembly and use, as well as vehicle slippage, leading to citizen complaints. In this embodiment, to address the surface slippage issue of the steel temporary bridge, colored epoxy composite asphalt anti-slip particles (with a certain amount of corundum added) are sprayed onto the surface of the bridge deck component 21, effectively meeting the requirements for slip resistance and noise reduction. A 20mm natural rubber pad 5 (which can be neoprene rubber) is placed between the assembled bridge deck 2 and the sleeper beam as a shock-absorbing measure to prevent noise generation between the temporary bridge and the sleeper beam. A 1mm thick layer of natural rubber (or a 1mm thick layer of epoxy resin) is adhered to the side contact surface between individual assembled bridge deck 2 sections of the temporary bridge, reducing noise during assembly and use. This achieves the effects of slip resistance, safety, and noise reduction without disturbing residents.

[0056] The working method and principle of this utility model:

[0057] Both the bolster beam and the outer ring beam are prefabricated and assembled on-site. The bridge deck 2 is prefabricated and assembled, while the corners of the outer ring beam are connected using mortise and tenon joints, improving on-site construction efficiency. This allows for efficient and rapid assembly construction, shortening the time spent on-site. The lifting eye hole 211 is located above the beam member 22, and the lifting eye 23 is directly fitted onto the beam member 22. When the lifting eye 23 is free, its inner diameter top contacts the top of the beam member 22 and is hidden, while its inner diameter bottom forms a hole with the bottom of the beam member 22. When the lifting eye 23 is used by magnetically pulling it up, its inner diameter top forms a hole with the top of the beam member 22, allowing it to be suspended, while its inner diameter bottom contacts the bottom of the beam member 22 to lift the assembled bridge deck 2. The surface of the bridge deck member 21 is sprayed with colored epoxy composite asphalt anti-slip granules (with a certain amount of corundum added) to meet anti-slip and noise reduction requirements. A 20mm natural rubber pad 5 is installed between the assembled bridge deck 2 and the bolster beam as a shock-absorbing measure to prevent noise generation between the temporary bridge and the bolster beam. A 1mm thick natural rubber is glued to the side contact surface between the single-piece assembled bridge plate 2 and the assembled bridge plate 2 temporary bridge to reduce noise during assembly and use.

[0058] 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 the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A prefabricated steel temporary bridge for roads, characterized in that, It includes prefabricated sleeper beams and assembled bridge decks. The prefabricated sleeper beams are set outside the shaft opening, and multiple assembled bridge decks are spliced ​​and laid on the prefabricated sleeper beams. The assembled bridge deck includes a bridge deck component and a beam component. The beam component is connected to the bottom of the bridge deck component. The bridge deck component has a lifting ring hole located above the beam component. A lifting ring is fitted onto the beam component at the position of the lifting ring hole. The inner diameter of the lifting ring is greater than the height of the beam component.

2. The prefabricated steel temporary bridge for roads according to claim 1, characterized in that, The beam component includes a main beam and a secondary beam, which are connected alternately to the bottom of the bridge deck component, and the lifting ring is sleeved on the secondary beam.

3. The prefabricated steel temporary bridge for roads according to claim 2, characterized in that, The lifting rings are fitted onto the secondary beams at the four corners of the bottom of the bridge deck components.

4. The prefabricated steel temporary bridge for roads according to claim 1, characterized in that, The lifting ring is made of magnetic material.

5. The prefabricated steel temporary bridge for roads according to claim 1, characterized in that, The precast sleeper beams are installed at both ends of the shaft opening along the driving direction. The front and rear ends of the assembled bridge deck overlap the precast sleeper beams. The top periphery of the precast sleeper beams is connected to a precast outer ring beam, which connects upward to the road surface.

6. The prefabricated steel temporary bridge for roads according to claim 5, characterized in that, The precast outer ring beam includes a first outer ring beam and a second outer ring beam; The two first outer ring beams are respectively set at the front and rear ends along the driving direction and connected to the prefabricated sleeper beam to form an L-shaped outer wall structure; The two second outer ring beams are respectively set at the left and right ends along the driving direction, and are installed on the precast sleeper beams at both ends.

7. The prefabricated steel temporary bridge for roads according to claim 6, characterized in that, The ends of the first outer ring beam and the ends of the second outer ring beam are connected by a tenon and mortise joint at the corner.

8. The prefabricated steel temporary bridge for roads according to claim 5, characterized in that, A rubber pad is provided at the bottom of the assembled bridge deck where it contacts the precast sleeper beam, and a rubber pad is provided at the side of the assembled bridge deck where it contacts the precast outer ring beam.

9. The prefabricated steel temporary bridge for roads according to claim 1, characterized in that, Rubber pads are provided at the side contact positions of adjacent assembled bridge plates.

10. The prefabricated steel temporary bridge for roads according to claim 1, characterized in that, The bridge deck components are coated with colored epoxy asphalt anti-skid particles containing corundum.

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