Road assembly type temporary steel bridge

Abstract

The invention 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 multiple 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 on-site construction road occupation time can be shortened through prefabricated 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] The invention relates to the technical field of steel temporary bridges, and in particular to a road assembled steel temporary bridge. Background Art

[0002] In order to reduce the impact on the lives of urban residents, the renovation of old cities and various infrastructure projects involving urban renewal are mostly carried out using trenchless methods. The shafts used in trenchless methods are often inevitably set up within the road range, and generally require continuous traffic during the day, so the shafts are required to cover the steel temporary bridge during the day and open the steel temporary bridge for construction at night. At present, the use of steel temporary bridges is uneven, the construction of steel temporary bridges is complex, and the construction period is long.

[0003] In the prior art, for example, Chinese patent CN213653175U published on July 9, 2021, sets a hidden pull ring that can be pulled up and down in the steel temporary bridge. The pull ring can be hidden in the steel temporary bridge when it is open to traffic, and the pull ring can be pulled up to suspend the steel temporary bridge when it is opened. However, in this type of prior art, a special pull ring fixing assembly needs to be processed, that is, a fixing plate is welded at the bottom of the hidden groove, and a hole is opened on the fixing plate and the pull ring is connected by bolts. The structure is complicated, and the processing and manufacturing are relatively troublesome, which affects the construction efficiency. Summary of the invention

[0004] The object of the present invention is to provide a road assembled steel temporary bridge, which can realize hidden movable lifting rings with a simpler structure, is more convenient and faster to process, and has high construction efficiency;

[0005] The present invention provides a road assembled steel temporary bridge, comprising a prefabricated bolster and an assembled bridge deck, wherein the prefabricated bolster is arranged outside a shaft opening, and a plurality of assembled bridge decks are spliced ​​and laid on the prefabricated bolster; the assembled bridge deck comprises a bridge deck component and a beam component, wherein the beam component is connected to the bottom of the bridge deck component, a lifting eye hole is opened on the bridge deck component, the lifting eye hole is located above the beam component, a lifting eye is sleeved on the beam component at the position of the lifting eye hole, and the inner diameter height of the lifting eye is greater than the height of the beam component.

[0006] Furthermore, the beam component includes a main beam and a secondary beam, the main beam and the secondary beam 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 rings are sleeved on the secondary beams at the four corners of the bottom of the bridge deck member.

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

[0009] Furthermore, prefabricated bolsters are arranged at the front and rear ends of the shaft opening in the driving direction, the front and rear ends of the assembled bridge deck are overlapped on the prefabricated bolsters, the top periphery of the prefabricated bolsters is connected with a prefabricated outer ring beam, and the prefabricated outer ring beam is connected upward 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 arranged at the front and rear ends along the driving direction, and are connected to the prefabricated bolster to form an L-shaped outer wall structure; the two second outer ring beams are respectively arranged at the left and right ends along the driving direction, and both ends are installed on the prefabricated bolster.

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

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

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

[0014] Furthermore, the surface of the bridge deck component is sprayed with colored epoxy asphalt anti-skid particles mixed with corundum.

[0015] The technical solution of the present invention can realize efficient and rapid assembly construction and shorten the time of on-site construction occupying the road by adopting prefabricated sleeper beams for assembly and prefabricated assembly of the bridge deck. The eyelet hole is opened above the beam member, and the eyelet is directly sleeved on the beam member. When the eyelet is free, the top of its inner diameter contacts the top of the beam member and is hidden, and the bottom of the inner diameter forms a hole with the bottom of the beam member; when the eyelet is pulled up for use, the top of its inner diameter forms a hole with the top of the beam member and can be suspended for use, and the bottom of the inner diameter contacts the bottom of the beam member to lift and assemble the bridge deck. Therefore, the present invention does not need to set up other structures for fixing the eyelets, and the processing is more convenient and fast, and the construction efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0018] Figure 2 A schematic diagram of a vertical shaft according to the present invention, viewed from above and in perspective, wherein the dotted line represents the outline of the vertical shaft;

[0019] Figure 3 It is a schematic diagram of the main beam and secondary beam structure of the present invention, wherein the dotted line represents the shaft outline;

[0020] Figure 4 For the present invention Figure 2 AA section view;

[0021] Figure 5 For the present invention Figure 2 BB cross-sectional view;

[0022] Figure 6 For the present invention Figure 2 and Figure 3 CC section view;

[0023] Figure 7 For the present invention Figure 6 The enlarged view of point E;

[0024] Figure 8 For the present invention Figure 2 and Figure 3 DD cross-sectional view;

[0025] Fig. 9 For the present invention Figure 8 The enlarged view of point F;

[0026] Fig.10 This is a schematic diagram of the state in which the lifting ring is pulled out of the lifting ring hole in Embodiment 1 of the present invention;

[0027] Description of reference numerals:

[0028] 1- Prefabricated corbels;

[0029] 2-assembled bridge deck; 21-bridge deck member; 211-lifting eye hole; 22-beam member; 221-main beam; 222-secondary beam; 23-lifting eye;

[0030] 3- shaft; 31- driving direction;

[0031] 4-prefabricated 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 particles; 7- road surface. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Example 1

[0037] like Figure 1-Figure 10 As shown, the present invention provides a road assembled steel temporary bridge, including a prefabricated bolster 1 and an assembled bridge deck 2, the prefabricated bolster 1 is arranged outside the wellhead of a shaft 3, and a plurality of assembled bridge decks 2 are spliced ​​and laid on the prefabricated bolster 1; the assembled bridge deck 2 includes a bridge deck member 21 and a beam member 22, the beam member 22 is connected to the bottom of the bridge deck member 21, a lifting eye hole 211 is opened on the bridge deck member 21, the lifting eye hole 211 is located above the beam member 22, a lifting eye 23 is sleeved on the beam member 22 at the position of the lifting eye hole 211, and the inner diameter height of the lifting eye 23 is greater than the height of the beam member 22.

[0038] Specifically, the existing steel temporary bridge sleeper beams and outer ring beams are cast in situ, which takes a long time to construct on site and is very troublesome. However, the present invention adopts prefabricated sleeper beams 1 and outer ring beams for assembly, and prefabricated temporary bridges are assembled, which can realize efficient and rapid assembly construction and shorten the time of on-site construction occupying the road.

[0039] The length direction of the assembled bridge deck 2 is the direction of vehicle travel, and in the width direction, multiple assembled bridge decks 2 are spliced ​​left and right and fully laid on the wellhead of the vertical shaft 3.

[0040] The steel temporary bridge of the present invention is hoisted in blocks, and each steel temporary bridge is provided with a hidden movable lifting ring 23 at the four corners of the secondary beam 222. When hoisting, the lifting ring 23 is sucked up by a magnet. When the temporary bridge is in use, the lifting ring 23 is hidden, which does not affect the passage of vehicles. The lifting ring hole 211 is opened above the beam member 22, and the lifting ring 23 is directly sleeved on the beam member 22. When the lifting ring 23 is free, the top of its inner diameter contacts the top of the beam member 22 and is hidden, and the bottom of the inner diameter forms a hole with the bottom of the beam member 22; when the lifting ring 23 is pulled up for use, the top of its inner diameter forms a hole with the top of the beam member 22 and can be suspended for use, and the bottom of the inner diameter contacts the bottom of the beam member 22. Therefore, the present invention does not need to set other structures for fixing the lifting ring 23, and the processing is more convenient and fast, and the construction efficiency is high. In addition, the top ring width of the lifting ring 23 is not greater than the thickness of the bridge deck member 21, so as to prevent the top of the lifting ring 23 from exposing the bridge deck member 21 when it is hidden, causing the road surface 7 to be uneven.

[0041] The materials of the prefabricated bolster 1 and the outer ring beam are C30 concrete and HRB400 steel bars, and the material of the assembled bridge deck 2 is 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 at the bottom of the bridge deck component 21, and the lifting ring 23 is sleeved on the secondary beam 222. The lifting ring 23 is sleeved on 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 made of steel (main and secondary beams 222 structure), that is, steel plates are welded, the spacing between the main beams 221 does not exceed 500mm, the spacing between the secondary beams 222 does not exceed 1800mm, the deformation of the temporary bridge is strictly controlled (the deformation is controlled not to exceed L / 500), the steel temporary bridge is standardized, the steel temporary bridge is reused, and the resource utilization efficiency is improved. The main beam 221 and the secondary beam 222 are welded horizontally and vertically at the bottom of the bridge deck member 21, and the height of the main beam 221 is higher than the height of the secondary beam 222, so that the bottom end of the secondary beam 222 is higher than the bottom end of the main beam 221, and the lifting ring 23 is sleeved on the secondary beam 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 the assembled bridge plate 2, the lifting ring 23 is sucked up by a magnet, and when the temporary bridge is used, the lifting ring 23 is demagnetized and falls down and is hidden inside the assembled bridge plate 2. The material of the lifting ring 23 can be selected, for example, HPB300 steel, which can be magnetically attracted by a magnet.

[0048] Example 4

[0049] The prefabricated bolster 1 is arranged at the front and rear ends of the shaft 3 outside the wellhead along the driving direction 31, and the front and rear ends of the assembled bridge deck 2 are overlapped on the prefabricated bolster 1. The top periphery of the prefabricated bolster 1 is connected with a prefabricated outer ring beam 4, and the prefabricated outer ring beam 4 is connected to the road surface 7 upward. The prefabricated 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 arranged at the front and rear ends along the driving direction 31, and are connected to the prefabricated bolster 1 to form an L-shaped outer wall structure; the two second outer ring beams 42 are respectively arranged at the left and right ends along the driving direction 31, and the two ends are installed on the prefabricated bolster 1. The end of the first outer ring beam 41 is connected to the end of the second outer ring beam 42 at the corner 43 by mortise and tenon joints.

[0050] Specifically, a circle of reinforced concrete outer ring beam is set between the temporary bridge and the road to ensure that the temporary bridge is stable, the connection is smooth, and the driving is comfortable. The first outer ring beam 41 is connected to the prefabricated bolster 1 to form an L-shaped outer wall structure to achieve the enclosure effect in the front and rear directions; the second outer ring beam 42 is connected to the left and right ends of the prefabricated bolster 1 to achieve the enclosure effect in the left and right directions. The first outer ring beam 41 and the second outer ring beam 42 are prefabricated and assembled, and the corner connection part adopts a mortise and tenon structure, which can further realize rapid assembly construction. The bottoms of the two ends of the first outer ring beam 41 and the second outer ring beam 42 are respectively provided with plug blocks, and the position of the corresponding plug block on the bolster is provided with a slot, and the plug block is embedded in the slot to achieve the rapid connection of the outer ring beam and the bolster.

[0051] If the shaft 3 is long, the whole prefabricated outer ring beam 4 may be too large to be transported and manufactured. In this case, the second outer ring beam 42 can be divided into multiple sections of spliced ​​beams spliced ​​end to end, and each section of the spliced ​​beams is also connected by a mortise and tenon structure, which is more convenient.

[0052] The sleeper beam and outer ring beam are prefabricated and assembled on site. The outer ring beam corners are connected with mortise and tenon structure to improve the efficiency of on-site construction. The surface is leveled by spraying epoxy asphalt anti-skid particles 6 (mixed with a certain amount of corundum).

[0053] Example 5

[0054] A rubber pad 5 is provided at the position where the bottom of the assembled bridge deck 2 contacts the prefabricated bolster 1, and a rubber pad 5 is provided at the position where the side of the assembled bridge deck 2 contacts the prefabricated outer ring beam 4. Rubber pads 5 are provided at the contact positions of the sides of adjacent assembled bridge decks 2. The surface of the bridge deck member 21 is sprayed with colored epoxy asphalt anti-skid particles 6 mixed with corundum.

[0055] Specifically, in addition to the problems in the background technology, existing steel temporary bridges often have problems such as noise disturbance during assembly and use, and vehicle slippage during use, which cause complaints from citizens. In this embodiment, in order to solve the problem of anti-skid surface of steel temporary bridges, the surface of the bridge deck component 21 is sprayed with colored epoxy composite asphalt anti-skid particles (and a certain amount of corundum is added), which can well meet the anti-skid and noise reduction requirements. A 20mm natural rubber pad 5 (chloroprene rubber can be used) is set between the assembled bridge deck 2 and the pillow beam as a shock-absorbing measure to avoid noise between the temporary bridge and the pillow beam. 1mm thick natural rubber (or 1mm thick epoxy resin) is glued to the side contact surface between the single assembled bridge deck 2 and the assembled bridge deck 2 temporary bridge to reduce noise during assembly and use. To achieve the effect of anti-skid safety and noise reduction without disturbing the public.

[0056] Working mode and principle of the present invention:

[0057] The bolster and the outer ring beam are prefabricated and assembled on site. The assembled bridge deck 2 is prefabricated and assembled, and the outer ring beam corners are connected by mortise and tenon structure to improve the efficiency of on-site construction. It can achieve efficient and fast assembly construction and shorten the time of on-site construction. The lifting ring hole 211 is opened above the beam member 22, and the lifting ring 23 is directly sleeved on the beam member 22. When the lifting ring 23 is free, the top of its inner diameter contacts the top of the beam member 22 and is hidden, and the bottom of the inner diameter forms a hole with the bottom of the beam member 22; when the lifting ring 23 is pulled up by magnetic suction, the top of its inner diameter forms a hole with the top of the beam member 22 and can be suspended for use, and the bottom of the inner diameter 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-skid particles (and a certain amount of corundum is added) to meet the requirements of anti-skid and noise reduction. A 20mm natural rubber pad 5 is set between the assembled bridge deck 2 and the bolster as a shock-absorbing measure to avoid noise between the temporary bridge and the bolster. The side contact surfaces between the single assembled bridge plate 2 and the assembled bridge plate 2 are adhered with 1mm thick natural rubber 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 the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A road assembled steel temporary bridge, characterized in that: It comprises a prefabricated bolster and an assembled bridge deck, wherein the prefabricated bolster is arranged outside the shaft opening, and a plurality of the assembled bridge decks are spliced ​​and laid on the prefabricated bolster; 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. A hanging eye hole is opened on the bridge deck component. The hanging eye hole is located above the beam component. A hanging eye is sleeved on the beam component at the position of the hanging eye hole. The inner diameter height of the hanging eye is greater than the height of the beam component.

2. The road-mounted steel bridge according to claim 1 is characterized in that: The beam component comprises a main beam and a secondary beam. The main beam and the secondary beam are staggered and connected to the bottom of the bridge deck component. The lifting ring is sleeved on the secondary beam.

3. The road-mounted steel bridge according to claim 2 is characterized in that: The lifting rings are sleeved on the secondary beams at the four corners of the bottom of the bridge deck component.

4. The road-mounted steel bridge according to claim 1 is characterized in that: The hanging ring is made of magnetic material.

5. The road-mounted steel bridge according to claim 1 is characterized in that: Prefabricated bolsters are arranged at the front and rear ends of the shaft opening in the driving direction, the front and rear ends of the assembled bridge deck are overlapped on the prefabricated bolsters, the top periphery of the prefabricated bolsters is connected with a prefabricated outer ring beam, and the prefabricated outer ring beam is connected upward to the road surface.

6. The road-mounted steel temporary bridge according to claim 5 is characterized in that: The prefabricated outer ring beam comprises a first outer ring beam and a second outer ring beam; The two first outer ring beams are respectively arranged at the front and rear ends along the driving direction, and are connected to the prefabricated bolster to form an L-shaped outer wall structure; The two second outer ring beams are respectively arranged at the left and right ends along the driving direction, and both ends are installed on the prefabricated bolster.

7. The road-mounted steel temporary bridge according to claim 6 is characterized in that: The end of the first outer ring beam and the end of the second outer ring beam are connected at a corner by mortise and tenon joints.

8. The road-mounted steel temporary bridge according to claim 5 is characterized in that: A rubber pad is provided at a position where the bottom of the assembled bridge deck contacts the prefabricated bolster, and a rubber pad is provided at a position where the side of the assembled bridge deck contacts the prefabricated outer ring beam.

9. The road-mounted steel bridge according to claim 1 is characterized in that: A rubber pad is provided at the side contact position adjacent to the assembled bridge plate.

10. The road-mounted steel temporary bridge according to claim 1, characterized in that: The surface of the bridge deck component is sprayed with colored epoxy asphalt anti-skid particles mixed with corundum.

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