CN213681672U - Cable pavement capable of reducing shaking - Google Patents

Abstract

The utility model provides a can reduce cable way of rocking for bridge construction, including a plurality of frames, a plurality of main rope, a plurality of handrail cable, cable wind rope and bridge floor. The frames are distributed at intervals along the length direction of the cable access road; the main cables are distributed at intervals at the bottom of the frame along the width direction of the cable access road and are connected with the frame, and two opposite ends of each main cable are respectively used for anchoring with the bridge; the handrail cables are respectively distributed at two opposite sides of the frame, the handrail cables positioned at the same side of the frame are distributed at intervals along the height direction of the cable access road and are all connected with the frame, and two opposite ends of each handrail cable are respectively used for anchoring with the bridge; one end of the cable rope is connected with the main cable through the stiffening cross beam, and the other end of the cable rope is used for being connected with a bridge pier of the bridge; the bridge floor is arranged on the frame and the stiffening beam. The cable approach can reduce sloshing.

Description

Cable pavement capable of reducing shaking

Technical Field

The utility model relates to a building engineering technical field, concretely relates to can reduce cable way of rocking.

Background

With the rapid development of the economy and traffic industry of China in recent years, various bridge projects crossing canyons and large rivers are continuously built. For bridges constructed in water areas with large water level fluctuation, the bridges are often attacked by flood in flood season, a plurality of underwater sidewalks cannot convey personnel and materials due to the fact that the flood overflows, in order to ensure that the bridge construction is normally carried out, the construction technology of the cable sidewalks can be adopted, steel wire ropes are erected between two piers, and the sidewalks are built on the cables and used for pumping concrete, conveying small materials and enabling personnel to pass through. However, under the influence of flood, the cable walkway erected between the two piers is prone to sway, affecting the material conveying efficiency and reducing the safety of personnel passage.

Disclosure of Invention

The utility model discloses aim at solving one of the above-mentioned problem that exists at least, provide one kind and can reduce the cable lane of rocking.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a cable walkway capable of reducing sloshing for bridge construction, comprising:

the frames are distributed at intervals along the length direction of the cable access road;

the main cables are distributed at intervals at the bottom of the frame along the width direction of the cable access way and are connected with the frame, and two opposite ends of each main cable are respectively used for anchoring the bridge;

the handrail cables are distributed on two opposite sides of the frame respectively, the handrail cables positioned on the same side of the frame are distributed at intervals along the height direction of the cable access road and are connected with the frame, and two opposite ends of each handrail cable are used for anchoring with the bridge respectively;

one end of the guy rope is connected with the main rope through the stiffening cross beam, and the other end of the guy rope is used for being connected with a bridge pier of the bridge; and

and the bridge deck is arranged on the frame and the stiffening cross beams.

Furthermore, each frame comprises a bottom beam, a top beam and two side beams, wherein the bottom beam and the top beam are parallel and opposite and are vertical to the main cable; the bottom beam is positioned at the tops of the main cables and connected with the main cables; the two side beams are respectively positioned at two opposite sides of the bottom beam, and each side beam is vertically connected with the bottom beam and the top beam; the handrail cable is vertically connected with the side beam; the bridge floor is arranged on the side surface of the bottom beam back to the main cable.

Further, the bridge deck comprises a steel mesh and a bamboo splint, and the steel mesh is connected with the bottom beam; the bamboo clamping plates are laid on the side faces of the reinforcing mesh, which are back to the main ropes.

Furthermore, a plurality of fixing grooves are concavely formed in one side, facing the main cables, of the stiffening cross beam corresponding to the main cables, and the stiffening cross beam is sleeved on the main cables through the fixing grooves; the cable access way also comprises a limiting piece which is fixed on the stiffening beam and positioned below the main cable so as to prevent the main cable from being separated from the fixed groove; the opposite two ends of the stiffening beam are provided with mounting holes, and the stiffening beam is connected with the cable rope through the mounting holes.

Furthermore, the stiffening beam is a channel steel and comprises a main plate and two side plates, the length direction of the main plate and the length directions of the two side plates are both perpendicular to the main cable, the two side plates are respectively connected to two opposite sides of the main plate, and the fixing groove and the mounting hole are both concavely arranged on the two side plates; the limiting piece is connected with the side plate.

Furthermore, the mounting holes in the two side plates are sequentially penetrated through by one end of the cable rope, the limiting clamp is further arranged at one end, facing away from the pier, of the cable rope, and the limiting clamp can abut against the side plates to prevent the cable rope from being separated from the mounting holes.

Furthermore, protective nets are hung among the side beams of the frames.

Furthermore, the main cable and the bottom beam, the top beam and the side beam, the side beam and the bottom beam, and the handrail cable and the side beam are all connected by adopting right-angle fasteners.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

1. above-mentioned cable pavement is connected with the pier of bridge through the guy rope, and the effect of guy rope can reduce the rocking that the guy rope pavement receives rivers impact to produce, does benefit to the material and carries, has improved the current security of personnel. The cable access road is formed by connecting the frame, the main cable, the handrail cable and the bridge floor, the main cable and the handrail cable are connected into a whole, the integral stability of the structure is improved, and the cable access road is simple in structure and convenient to construct.

2. According to the cable access road, the bridge floor comprises the steel bar mesh and the bamboo splints, the steel bar mesh is arranged at the bottom of the bridge floor, the steel bar mesh and the frame are firmly and closely bound through the iron wires, the bamboo splints can be supported, and the bamboo splints are hard in texture, have good impact resistance and can be better suitable for bridge construction; the guy rope is connected with the main cable through the stiffening beam, and the connection of the guy rope can be more stable due to the arrangement of the stiffening beam.

3. Above-mentioned cable way, the stiffening beam is through a plurality of fixed slots back-buckles on a plurality of main cables, recycles and is fixed in on the stiffening beam and is located the locating part of main cable below and prevents that the main cable from deviating from in the fixed slot, makes the stiffening beam installation convenient, firm, and makes the stiffening beam can bear the bigger pulling force of cable wind rope to can further carry on spacingly to the main cable.

Drawings

Fig. 1 is a schematic structural view of a cableway according to a preferred embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of the deck and frame of the cableway of FIG. 1 at B-B.

FIG. 3 is a schematic cross-sectional view of the deck and stiffening cross-beams of the cableway of FIG. 1 at A-A.

FIG. 4 is a schematic structural view of the stiffening beam shown in FIG. 3 with the limiting member removed.

FIG. 5 is a schematic top view of the structure of FIG. 3 with the deck removed.

Fig. 6 is a structural view of the bridge and the cable walkway at the anchoring point according to the preferred embodiment of the present invention.

Fig. 7 is an enlarged view of fig. 6 at C.

Description of the main elements

100. A cable access way; 2. a frame; 21. a bottom beam; 23. a top beam; 25. a side beam; 26. a stiffening beam; 260. fixing grooves; 261. mounting holes; 263. a main board; 265. a side plate; 3. a main rope; 4. a handrail cable; 31. a load-bearing rope; 33. an anchoring section; 331. a first connecting rope; 332. sleeving a rope; 335. a second connecting rope; 5. a bridge deck; 51. a reinforcing mesh; 53. bamboo splints; 6. a guy rope; 7. a protective net; 8. a steel bar; 9. crossties; 91. a limiting groove; 10. rope clamping; 11. a support member; 112. an arc transition surface; 12. a limiting member; 13. a limiting card; 14. a rubber pad; 200. a bridge; 210. a box girder; 230. a bridge pier; 240. reserving a hole; 250. PVC pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a cable walkway 100 capable of reducing sloshing, which includes a plurality of frames 2, a plurality of main ropes 3, a plurality of handrail ropes 4, a plurality of guy ropes 6, and a bridge floor 5. A plurality of frames 2 are distributed at intervals along the length direction of the cable access road 100; a plurality of main cables 3 are distributed at intervals at the bottom of the frame 2 along the width direction of the cable access way 100 and are all connected with the frame 2, and two opposite ends of each main cable 3 are respectively used for anchoring with a bridge 200; the plurality of handrail cables 4 are respectively distributed at two opposite sides of the frame 2 and are connected with the frame 2, the handrail cables 4 positioned at the same side of the frame 2 are distributed at intervals along the height direction of the cable access way 100, and two opposite ends of each handrail cable 4 are respectively used for anchoring with the bridge 200; one end of the cable rope 6 is connected with the main cable 3 through the stiffening cross beam 26, and the other end is used for being connected with the bridge pier 230 of the bridge 200; the deck 5 is mounted on the frame 2 and the stiffening cross member 26. The structure of the bridge 200 is prior art and will not be described herein for brevity.

In the present embodiment, each frame 2 is substantially in a square frame state, and includes a bottom beam 21, a top beam 23, and two side beams 25, the bottom beam 21 and the top beam 23 are parallel and opposite to each other and are perpendicular to the main rope 3, and both the bottom beam 21 and the top beam 23 are parallel to the width direction of the cable transit 100; the bottom beam 21 is positioned at the top of the main ropes 3 and is connected with the main ropes 3; the two side beams 25 are respectively positioned at two opposite sides of the bottom beam 21, and each side beam 25 is vertically connected with the bottom beam 21 and the top beam 23; the grab rail 4 is vertically connected to the side beam 25. In the present embodiment, a protective net 7 is further suspended between the side members 25 of the plurality of frames 2 to further improve safety, and the protective net 7 can be connected and fixed to the side members 25 and/or the handrail cables 4 by being tightly tied with iron wires. In the present embodiment, the bottom beam 21 and the side beam 25, and the side beam 25 and the top beam 23 are detachably connected by a right-angle fastener (not shown), and it is understood that other methods such as welding may be used for connection. The structure of the right-angle fastener belongs to the prior art, and is not described herein for brevity. Preferably, the bottom beam 21, the top beam 23 and the side beam 25 are all steel pipes; the distance between two adjacent frames 2 is 3m, and it can be understood that it can be set to other distances according to the requirement.

In the present embodiment, the main ropes 3 and the handrail ropes 4 are both steel wire ropes, wherein the main ropes 3 are preferably steel wire ropes with a diameter of 32mm, the distance between two adjacent main ropes 3 is 0.5m, the handrail ropes 4 are preferably steel wire ropes with a diameter of 22mm, and the distance between two adjacent handrail ropes 4 on the same side of the frame 2 is 0.6 m. The anchoring mode of the main rope 3 is the same as that of the handrail rope 4, and specifically comprises the following steps: referring to fig. 6 and 7, a preformed hole 240 is formed through the box girder 210 of the bridge 200, in the present embodiment, the preformed hole 240 is disposed in an inclined manner, and a PVC pipe 250 is also installed in the preformed hole 240 in a pre-buried manner; one end of the preformed hole 240 close to the interior of the bridge 200 is provided with a steel bar 8; the main rope 3 or the handrail rope 4 comprises a bearing rope 31 and anchoring sections 33 positioned at two opposite ends of the bearing rope 31, the bearing rope 31 of the main rope 3 is positioned at the bottom of the frame 2 and is connected with the frame 2, and specifically, the bearing rope 31 is positioned at the bottom surface of the bottom beam 21 and is detachably connected with the bottom beam 21 through a right-angle fastener; the bearing rope 31 of the handrail rope 4 is positioned on the side surface of the frame 2 and is connected with the frame 2, specifically, the bearing rope 31 of the handrail rope 4 is detachably connected with the side beam 25 through a right-angle fastener, and it can be understood that other mechanisms in the prior art can be adopted for connection; the anchoring section 33 comprises a first connecting rope 331, a loop rope 332 and a second connecting rope 335, the first connecting rope 331 is connected with one end of the corresponding bearing rope 31 and one end of the loop rope 332, and one end of the second connecting rope 335 is connected with the other end of the loop rope 332; the first connecting rope 331 and the second connecting rope 335 are both provided with a preformed hole 240 through a PVC pipe 250; in this embodiment, the first connecting rope 331 and the second connecting rope 335 are parallel to each other, and both the first connecting rope 331 and the second connecting rope 335 are perpendicular to the steel bar 8; the loop rope 332 is sleeved on the steel bar 8, the loop rope 332 gives a pulling force to the steel bar 8 so that the steel bar 8 abuts against the bridge 200, in the embodiment, the steel bar 8 abuts against the bridge 200 through the sleeper 9, a limiting groove 91 for limiting the steel bar 8 is further concavely arranged on one side of the sleeper 9 facing the steel bar 8, and the steel bar 8 is located at the limiting groove 91; a rubber pad 14 is laid between the steel bar 8 and the sleeve rope 332, and the rubber pad 14 is arranged opposite to the sleeper 9; the anchoring section 33 is further provided with two sets of rope clips 10, the two sets of rope clips 10 are respectively located at two opposite ends of the preformed hole 240, and the second connecting rope 335 and the first connecting rope 331 are clipped together.

In this embodiment, a support 11 is further installed at a corner of the first connecting rope 331 and the second connecting rope 335, a bottom of the support 11 is embedded in the box girder 210 of the bridge 200, and a top surface of the support 11 is supported at the bottom of the first connecting rope 331 and is located between the preformed hole 240 and the group of rope clamps 10 far away from the steel bar 8. The supporting member 11 may be configured as a frame or a block, and the contact surface between the supporting member 11 and the first connecting rope 331 is an arc-shaped transition surface 112.

In the present embodiment, the number of the wind cables 6 is four, four of the wind cables are equally divided into two groups, two groups of the wind cables 6 are distributed at intervals along the length direction of the cable sidewalk 100, and two wind cables 6 in each group are distributed at intervals along the width direction of the cable sidewalk 100 and are respectively connected to two opposite sides of the cable sidewalk 100, so as to provide a strong support for the cable sidewalk 100 and reduce the sway of the cable sidewalk 100.

The cable rope 6 is connected with the main cable 3 through a stiffening beam 26, which specifically comprises: referring to fig. 3 to 5, in the present embodiment, the stiffening beam 26 is disposed corresponding to the installation position of the guy rope 6; a plurality of fixing grooves 260 are concavely arranged on one side of the stiffening beam 26 facing the main cables 3 corresponding to the plurality of main cables 3, the plurality of fixing grooves 260 are distributed at intervals along the width direction of the cable access 100, and the stiffening beam 26 is sleeved on the bearing ropes 31 of the plurality of main cables 3 through the plurality of fixing grooves 260; the cable approach 100 further comprises a stopper 12, wherein the stopper 12 is fixed on the stiffening beam 26 and positioned below the main cable 3 to prevent the main cable 3 from being released from the fixing groove 260; the opposite both ends of stiffening beam 26 have all been seted up mounting hole 261, and stiffening beam 26 passes through mounting hole 261 and is connected with hawser 6.

In this embodiment, the stiffening beam 26 is a channel steel, and includes a main plate 263 and two side plates 265, the length direction of the main plate 263 and the length direction of the two side plates 265 are both perpendicular to the main cable 3, the two side plates 265 are respectively connected to two opposite sides of the main plate 263, and the fixing groove 260 and the mounting hole 261 are both recessed on the two side plates 265; the limiting member 12 is a steel pipe, and the steel pipe is connected to the side plate 265 by welding or the like and is located at the notch of the plurality of fixing grooves 260. One end of the guy cable 6 sequentially penetrates through the corresponding mounting holes 261 on the two side plates 265, one end of the guy cable 6, which faces away from the pier 230, is further provided with a limiting clamp 13, and the limiting clamp 13 can abut against the side plates 265 so as to prevent the guy cable 6 from being separated from the mounting holes 261. The structure of the position-limiting clamp 13 belongs to the prior art, and is not described herein for brevity.

The bridge deck 5 is installed on the frame 2 and the stiffening crossbeams 26, in this embodiment, the bridge deck 5 includes a mesh reinforcement 51 and a bamboo plywood 53, the mesh reinforcement 51 is laid on the side of the bottom beam 21 facing away from the main ropes 3 and the side of the main plate 263 of the stiffening beam 26 facing away from the main ropes 3 and connected to the bottom beam 21, and specifically, the mesh reinforcement 51 and the bottom beam 21 can be firmly bonded by iron wires. It will be appreciated that the mesh reinforcement 51 can also be connected to the load-bearing ropes 31 of the main ropes 3 by means of wire bonding to further improve the connection stability of the mesh reinforcement 51. The bamboo splints 53 are laid on the side of the mesh reinforcement 51 facing away from the main ropes 3 and are connected to the mesh reinforcement 51 by means of clips (not shown).

The cable sidewalk 100 is connected with the bridge pier 230 of the bridge 200 through the cable wind rope 6, and the shaking generated by the impact of water flow on the cable sidewalk 100 can be reduced through the effect of the cable wind rope 6, so that the material conveying is facilitated, and the passing safety of personnel is improved. The cable access road 100 is formed by connecting the frame 2, the main cable 3, the handrail cable 4 and the bridge floor 5, and the main cable 3 and the handrail cable 4 are connected into a whole, so that the stability of the whole structure is improved, and the cable access road is simple in structure and convenient to construct.

Above-mentioned cable pavement 100, bridge floor 5 include steel mesh 51 and bamboo splint 53, and the bridge floor 5 bottom is steel mesh 51, and it is firm through the iron wire is closely pricked between steel mesh 51 and the floorbar 21, and it can support bamboo splint 53, and bamboo splint 53 texture is hard, has better shock resistance ability, can adapt to bridge 200 construction usage better. The cable 6 is connected with the main cable 3 through a stiffening beam 26, and the stiffening beam 26 can enable the cable 6 to be connected more stably.

In the cable pavement 100, the stiffening beam 26 is reversely buckled on the main cables 3 through the fixing grooves 260, and the limiting members 12 fixed on the stiffening beam 26 and positioned below the main cables 3 prevent the main cables 3 from being separated from the fixing grooves 260, so that the stiffening beam 26 is convenient and stable to mount, can bear the larger pulling force of the cable rope 6, and can further limit the main cables 3.

In the cable access way 100, when the main cable 3 or the handrail cable 4 is anchored, the bridge 200 is provided with the preformed hole 240 in a penetrating manner, one end of the preformed hole 240 close to the inside of the bridge 200 is provided with the steel bar 8, then the end part of the main cable 3 or the handrail cable 4 passes through the preformed hole 240 and bypasses the steel bar 8, so that the steel bar 8 is abutted against the bridge 200, and then the main cable 3 or the handrail cable 4 is fastened through the two groups of rope clamps 10 respectively arranged at the two opposite ends of the preformed hole 240.

In the cable access way 100, the steel bar 8 abuts against the bridge 200 through the sleepers 9, and the sleepers 9 can disperse the pressure of the steel bar 8 on the bridge 200, so that the influence of the steel bar 8 on the bridge 200 is reduced; the limiting groove 91 on the sleeper 9 can prevent the steel bar 8 from moving randomly, so that the main cable 3 or the handrail cable 4 is anchored more stably.

In the cable access way 100, the rubber pad 14 is further laid between the steel bar 8 and the loop rope 332, and the rubber pad 14 can disperse the pressure of the steel bar 8 on the loop rope 332, so that the steel bar 8 is prevented from deforming.

In the cable access road 100, the first connecting rope 331 and the second connecting rope 335 are perpendicular to the steel bar 8, so that the anchoring stability of the main rope 3 or the grab rail 4 can be further improved. The support piece 11 is arranged to guide the main rope 3 or the handrail rope 4 to bend, and the arc-shaped transition surface 112 of the support piece 11 can reduce the friction between the main rope 3 or the handrail rope 4 and the support piece 11 and reduce the abrasion. The PVC pipe 250 pre-buried in the prepared hole 240 facilitates the penetration of the main rope 3 or the handrail rope 4. Meanwhile, the main rope 3 or the handrail rope 4 can be conveniently disassembled and assembled by the anchoring mode, and the sleeper 9, the steel bar 8 and the rope clamp 10 can be disassembled and reused after the use is finished, so that the resources are saved.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims (8)

1. A cable walkway (100) with reduced sloshing for bridge (200) construction, comprising:

the frames (2) are distributed at intervals along the length direction of the cable access way (100);

the main ropes (3) are distributed at intervals at the bottom of the frame (2) along the width direction of the cable access way (100) and are connected with the frame (2), and two opposite ends of each main rope (3) are respectively used for anchoring with a bridge (200);

the handrail cables (4) are respectively distributed at two opposite sides of the frame (2), the handrail cables (4) positioned at the same side of the frame (2) are distributed at intervals along the height direction of the cable access way (100) and are connected with the frame (2), and two opposite ends of each handrail cable (4) are respectively used for anchoring with the bridge (200);

one end of the cable rope (6) is connected with the main rope (3) through a stiffening cross beam (26), and the other end of the cable rope (6) is used for being connected with a pier (230) of the bridge (200); and

and the bridge deck (5) is arranged on the frame (2) and the stiffening cross beam (26).

2. The cable walkway (100) according to claim 1, wherein each frame (2) comprises a bottom beam (21), a top beam (23) and two side beams (25), the bottom beam (21) and the top beam (23) being parallel and opposite and perpendicular to the main cable (3); the bottom beam (21) is positioned at the tops of the main cables (3) and connected with the main cables (3); the two side beams (25) are respectively positioned at two opposite sides of the bottom beam (21), and each side beam (25) is vertically connected with the bottom beam (21) and the top beam (23); the handrail cable (4) is vertically connected with the side beam (25); the bridge deck (5) is arranged on the side surface of the bottom beam (21) back to the main cable (3).

3. The cableway (100) according to claim 2, characterized in that the deck (5) comprises a mesh of reinforcements (51) and bamboo cleats (53), the mesh of reinforcements (51) being connected to the bottom beams (21); the bamboo plywood (53) is laid on the side of the reinforcing mesh (51) back to the main rope (3).

4. The cable approach (100) of claim 1, wherein the side of the stiffening beam (26) facing the main cables (3) is recessed with a plurality of fixing slots (260) corresponding to the plurality of main cables (3), and the stiffening beam (26) is sleeved on the plurality of main cables (3) through the plurality of fixing slots (260); the cable access way (100) further comprises a limiting piece (12), wherein the limiting piece (12) is fixed on the stiffening cross beam (26) and positioned below the main cable (3) to prevent the main cable (3) from being separated from the fixing groove (260); the opposite two ends of the stiffening beam (26) are provided with mounting holes (261), and the stiffening beam (26) is connected with the cable rope (6) through the mounting holes (261).

5. The cable approach (100) of claim 4, wherein the stiffening beam (26) is a channel steel, the stiffening beam (26) comprises a main plate (263) and two side plates (265), the length direction of the main plate (263) and the length direction of the two side plates (265) are both perpendicular to the main cable (3), the two side plates (265) are respectively connected to two opposite sides of the main plate (263), and the fixing grooves (260) and the mounting holes (261) are both concavely formed on the two side plates (265); the stopper (12) is connected to the side plate (265).

6. The cable approach (100) of claim 5, wherein one end of the cable rope (6) sequentially penetrates through the mounting holes (261) of the two side plates (265), and a limit clip (13) is further installed at the end of the cable rope (6) facing away from the bridge pier (230), wherein the limit clip (13) can abut against the side plates (265) to prevent the cable rope (6) from coming out of the mounting holes (261).

7. A cable walkway (100) according to claim 2, wherein a protective net (7) is also suspended between the side beams (25) of the frames (2).

8. The cable walkway (100) of claim 2, wherein the main cable (3) and the bottom beam (21), the top beam (23) and the side beam (25), the side beam (25) and the bottom beam (21), and the grab cable (4) and the side beam (25) are all connected by a right-angle fastener.

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