Fabricated light steel plate composite beam bridge structure

Abstract

The utility model relates to the technical field of composite beam bridges, in particular to an assembly type light steel plate composite beam bridge structure which can enable the assembly of a composite beam bridge to be more convenient, effectively reduce the workload of constructors and improve the construction efficiency. Comprising two main beams and a plurality of bridge deck slabs, four sets of butt joint grooves are symmetrically formed in the bottom end of each bridge deck slab, two sets of positioning inserting grooves are symmetrically formed in each set of butt joint grooves front and back, a plurality of pairs of positioning mechanisms matched with the butt joint grooves and the positioning inserting grooves in the two sides of each bridge deck slab are arranged at the top end of each main beam, and each positioning mechanism comprises a butt joint block; baffles are fixedly connected to the inner sides of the two sets of positioning inserting blocks, two sets of springs are symmetrically and fixedly connected between the two sets of baffles, four sets of outer pouring holes communicating with the butt-joint grooves are formed in the top ends of the main beams, and the multiple bridge deck slabs are fixedly assembled on the two main beams through cooperation of the butt-joint blocks and the butt-joint grooves and cooperation of the positioning inserting blocks and the positioning inserting grooves. And a hoisting rod is fixedly arranged in each group of outer pouring holes.

Description

Technical Field

[0001] The utility model relates to the technical field of composite beam bridges, in particular to a prefabricated light steel plate composite beam bridge structure. Background Technique

[0002] Composite structure bridges give full play to the characteristics of good tensile performance of steel and good compressive performance of concrete, and have the advantages of light self-weight, high bearing capacity, simple structure, convenient construction, and little impact on traffic interruption. They are more and more widely used in highway and municipal engineering.

[0003] The existing light steel plate composite beam bridges are mainly assembled by main beams and bridge decks. During assembly, the bridge decks are hoisted onto the main beams installed on the piers by a crane, and then the bridge decks and the main beams are fixed together by bolting. Finally, concrete is poured into the bolt holes to cover the bolts. However, this assembly method requires a large number of bolts to be screwed by workers during construction, which is relatively troublesome to assemble, with a large workload and affects the construction efficiency. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a prefabricated light steel plate composite beam bridge structure that can make the assembly of the composite beam bridge more convenient, effectively reduce the workload of construction workers, and improve the construction efficiency.

[0005] Technical Solution

[0006] To achieve the above object, the utility model provides the following technical solution: A prefabricated light steel plate composite beam bridge structure, including two main beams and multiple bridge decks. Four groups of docking grooves are symmetrically arranged at the bottom end of each bridge deck, and two groups of positioning slots are symmetrically arranged before and after in each group of docking grooves. Multiple pairs of positioning mechanisms are arranged at the top end of each main beam and are matched with the docking grooves and positioning slots on both sides of the bridge deck. The positioning mechanism includes a docking block, which is fixedly installed at the top end of the main beam. Two groups of notches are communicated with each other before and after on the docking block. Positioning blocks are slidably arranged on both groups of notches, and the outer dimension of the positioning block is the same as that of the positioning slot. Two groups of baffles are fixedly connected to the inner sides of the two groups of positioning blocks, and two groups of springs are symmetrically fixedly connected between the two groups of baffles. An inner pouring hole is communicated with the top end of the docking block, and four groups of outer pouring holes communicated with the docking grooves are arranged at the top end of the main beam. The outer pouring holes are aligned with the inner pouring hole. Multiple bridge decks are fixedly assembled on the two main beams through the cooperation of the docking block and the docking groove, and the positioning block and the positioning slot. A hoisting rod is fixedly arranged in each group of outer pouring holes.

[0007] Preferably, guide blocks are fixedly arranged at the left and right ends of multiple groups of baffles, and guide grooves are arranged on the inner walls of the left and right sides of multiple groups of docking blocks and are matched with the guide blocks. Multiple groups of baffles are respectively slidably installed in multiple groups of docking blocks through the cooperation of the guide blocks and the guide grooves.

[0008] Preferably, limiting blocks are fixedly arranged in the middle of the guiding grooves on the inner walls of the left and right sides of multiple pairs of the docking blocks.

[0009] Preferably, rounded corners are arranged at the upper edges of multiple groups of the external casting holes.

[0010] Preferably, multiple pairs of the docking blocks are fixedly welded to the top ends of the main beams by welding.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: during assembly and installation, construction workers use a crane to fixedly install two main beams on two adjacent bridge piers. The distance between each pair of docking blocks at the top end of the main beam is the same as the distance between two groups of docking grooves on both sides of the bridge deck, which can ensure accurate assembly. Then, the construction workers tie the lifting rope to the lifting rod, lift the bridge deck, and hoist the bridge deck onto the main beam, aligning the docking grooves at the bottom of the bridge deck with the docking blocks. Then, use the crane to hoist and lay the bridge deck flat on the main beam. Initially, the baffle abuts against the front and rear inner walls of the docking block under the action of the spring. The top plane width of the positioning plug is the same as the depth of the notch, so that the inclined plane on the outside of the positioning plug can fully extend. Thus, during the process of placing the bridge deck on the main beam, the lower edge of the docking groove arranged at the bottom of the bridge deck generates an inward extrusion force on the positioning plug through the extended inclined plane, causing the positioning plug to slide inward when the bridge deck is being laid flat, and the positioning plug to push the baffle to slide inward, further compressing the spring. When the positioning plug moves to align with the positioning slot, the spring starts to rebound, thereby pushing the positioning plug to slide outward through the baffle, inserting the positioning plug into the positioning slot. At this time, the docking groove also just completes inserting into the positioning slot, and the bottom of the bridge deck abuts against the top end of the main beam. Thus, the assembly of one bridge deck is completed. The construction workers untie the lifting rope from the lifting rod and then assemble the remaining bridge decks onto the two main beams in the same way, making each bridge deck contact each other. Finally, pour concrete into the docking blocks through the external casting holes and fill them up to complete the assembly. By using a clamping method to assemble the bridge deck and the main beam, compared with the traditional bolt connection, only a crane is needed to hoist the bridge deck to align the docking groove and the docking block for assembly. Construction workers do not need to twist a large number of bolts, so the assembly of the composite beam bridge is more convenient, effectively reducing the workload of construction workers and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the axonometric structural schematic diagram of the present utility model;

[0013] Figure 2 is the front view structural schematic diagram of the present utility model;

[0014] Figure 3 is the axonometric partial sectional structural schematic diagram of the present utility model;

[0015] Figure 4 It is an isometric structural schematic diagram of the connection between the positioning mechanism and the main beam in the present utility model;

[0016] Figure 5 It is an upward-looking isometric structural schematic diagram of the bridge deck in the present utility model;

[0017] Figure 6 It is an upward-looking isometric structural schematic diagram of the positioning mechanism in the present utility model;

[0018] Figure 7 It is an isometric sectional structural schematic diagram of the positioning mechanism in the present utility model;

[0019] Figure 8 It is an upward-looking isometric structural schematic diagram of the docking block in the present utility model;

[0020] Reference signs in the drawings: 1, main beam; 2, bridge deck; 3, docking groove; 4, positioning slot; 5, docking block; 6, notch; 7, positioning plug; 8, baffle; 9, spring; 10, internal pouring hole; 11, external pouring hole; 12, lifting rod; 13, guiding block; 14, guiding groove; 15, limiting block; 16, chamfer. Detailed implementation manners

[0021] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0022] Embodiment

[0023] Please refer to Figures 1-8, A prefabricated lightweight steel plate composite beam bridge structure of the present utility model includes two main beams 1 and multiple bridge decks 2. Four groups of docking grooves 3 are symmetrically provided at the bottom end of each bridge deck 2. Two groups of positioning slots 4 are symmetrically provided before and after in each group of docking grooves 3. Multiple pairs of docking blocks 5 that are matched with the docking grooves 3 and positioning slots 4 on both sides of the bridge deck 2 are provided at the top end of each main beam 1. The docking blocks 5 are fixedly installed at the top end of the main beam 1. Two groups of notches 6 are communicatively provided before and after on the docking blocks 5. Positioning plugs 7 are slidably provided on both groups of notches 6, and the outer dimension of the positioning plug 7 is the same as that of the positioning slot 4. Two baffles 8 are fixedly connected to the inner sides of the two groups of positioning plugs 7. Two groups of springs 9 are symmetrically fixedly connected between the two baffles 8. An inner pouring hole 10 is communicatively provided at the top end of the docking block 5. Four groups of outer pouring holes 11 that are communicated with the docking grooves 3 are provided at the top end of the main beam 1. The outer pouring holes 11 are aligned with the inner pouring hole 10. Multiple bridge decks 2 are fixedly assembled on the two main beams 1 through the cooperation of the docking blocks 5 and docking grooves 3 and the positioning plugs 7 and positioning slots 4. A lifting rod 12 is fixedly provided in each group of outer pouring holes 11;When assembling and installing, the construction workers use a crane to fix the two main beams 1 to two adjacent bridge piers. The spacing between each pair of docking blocks 5 at the top of the main beam 1 is the same as the spacing between the two groups of docking grooves 3 on both sides of the bridge deck 2, which can ensure accurate assembly. The construction workers then tie the lifting rope to the lifting rod 12, lift the bridge deck 2, and lift the bridge deck 2 onto the main beam 1, so that the docking grooves 3 at the bottom of the bridge deck 2 are aligned with the docking blocks 5, and then use the crane to lift the bridge deck 2 and place it flat on the main beam 1. At first, the baffle plate 8 is against the front and rear inner walls of the docking block 5 under the action of the spring 9, and the top plane width of the positioning plug 7 is the same as the depth of the notch 6, so that the inclined surface on the outer side of the positioning plug 7 can be fully extended, so that in the process of placing the bridge deck 2 on the main beam 1, the lower edge of the docking groove 3 set at the bottom of the bridge deck 2 generates an inward squeezing force on the positioning plug 7 through the outwardly extending inclined surface, so that the bridge deck 2 pushes the positioning plug 7 to slide inward during the flattening process, so that the positioning plug 7 pushes the baffle plate 8 to slide inward, thereby making the baffle plate The plate 8 further compresses the spring 9. When the positioning block 7 moves to align with the positioning slot 4, the spring 9 begins to rebound, thereby pushing the positioning block 7 to slide outward through the baffle 8, so that the positioning block 7 is inserted into the positioning slot 4. At this time, the docking slot 3 is also just inserted into the positioning slot 4, and the bottom of the bridge deck 2 is against the top of the main beam 1. At this point, the assembly of a bridge deck 2 is completed. The construction personnel untie the lifting rope from the lifting rod 12, and then assemble the remaining bridge decks 2 to the two main beams 1 in the same way, so that each bridge deck 2 contacts each other. Finally, concrete is poured into the docking block 5 through the external pouring hole 11 and filled, and the assembly is completed. The bridge deck 2 and the main beam 1 are assembled by the card-mounting method. Compared with the traditional bolt connection, it only needs to be hoisted by a crane to align the docking slot 3 and the docking block 5 for assembly. The construction personnel do not need to screw a large number of bolts, so that the assembly of the combined beam bridge is more convenient, which effectively reduces the workload of the construction personnel and improves the construction efficiency. ;

[0024] Guide blocks 13 are fixedly provided at both ends of the left and right ends of the multiple groups of baffles 8, and guide grooves 14 are provided on the inner walls on the left and right sides of the multiple groups of docking blocks 5 to cooperate with the guide blocks 13. The multiple groups of baffles 8 are slidably installed in the multiple groups of docking blocks 5 through the cooperation of the guide blocks 13 and the guide grooves 14; by providing the guide blocks 13 and the guide grooves 14, a supporting effect can be played on the baffles 8 when they slide, making the baffles 8 more stable when sliding.

[0025] A plurality of pairs of guide grooves 14 on the inner walls of the left and right sides of the docking blocks 5 are fixedly provided with limit blocks 15 in the middle; by setting the limit blocks 15, the baffle 8 can be limited when sliding, preventing the positioning plug 7 from disengaging from the notch 6 when sliding inward.

[0026] The upper edges of the plurality of groups of the external casting holes 11 are all provided with rounded corners 16; by providing the rounded corners 16, the upper edges of the external casting holes 11 can be made smoother, thereby avoiding scratches on the hands when fastening or unfastening the sling.

[0027] A plurality of pairs of the docking blocks 5 are fixedly welded to the top of the main beam 1 by welding; the docking blocks 5 are pre-fixed to the main beam 1 by welding, so that the connection between the docking blocks 5 and the main beam 1 is more firm and stable.

[0028] The utility model discloses an assembled light steel plate composite beam bridge structure, and its working principle is that during assembly and installation, the construction personnel use a crane to fix the two main beams 1 to two adjacent bridge piers, and the spacing between each pair of docking blocks 5 at the top of the main beam 1 is the same as the spacing between the two groups of docking grooves 3 on both sides of the bridge deck 2, which can ensure accurate assembly. The construction personnel then bolt the lifting rope to the lifting rod 12, lift the bridge deck 2, and lift the bridge deck 2 onto the main beam 1, so that the docking groove 3 at the bottom of the bridge deck 2 is aligned with the docking block 5, and then use the crane to lift the bridge deck 2 and place it flat on the main beam 1. At first, the baffle 8 is against the front and rear inner walls of the docking block 5 under the action of the spring 9, and the top plane width of the positioning plug 7 is the same as the depth of the notch 6, so that the inclined surface on the outside of the positioning plug 7 can be fully extended, so that in the process of placing the bridge deck 2 on the main beam 1, the lower edge of the docking groove 3 set at the bottom of the bridge deck 2 can be extended outward. The inclined surface produces an inward extrusion force on the positioning plug 7, so that the bridge panel 2 pushes the positioning plug 7 to slide inward during the flat laying process, so that the positioning plug 7 pushes the baffle 8 to slide inward, and then the baffle 8 further compresses the spring 9. When the positioning plug 7 moves to align with the positioning slot 4, the spring 9 begins to rebound, thereby pushing the positioning plug 7 to slide outward through the baffle 8, so that the positioning plug 7 is inserted into the positioning slot 4. At this time, the docking groove 3 is also just inserted into the positioning slot 4, and the bottom of the bridge panel 2 is against the top of the main beam 1. The assembly of one bridge panel 2 is completed. The construction personnel untie the lifting rope from the lifting rod 12, and then assemble the remaining bridge panels 2 to the two main beams 1 in turn in the same way, so that each bridge panel 2 contacts each other. Finally, the lifting rope is removed and concrete is poured into the docking block 5 through the external pouring hole 11 and the internal pouring hole 10 and the external pouring hole 11 is filled to complete the assembly.

[0029] The utility model provides an assembled light steel plate composite beam bridge structure, and its installation method, connection method or setting method are all common mechanical methods, and can be implemented as long as the beneficial effects can be achieved.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An assembled light steel plate composite beam bridge structure, comprising two main beams (1) and a plurality of bridge decks (2), characterized in that: The bottom end of each bridge panel (2) is symmetrically provided with four groups of docking grooves (3), and each group of docking grooves (3) is symmetrically provided with two groups of positioning slots (4). The top end of each main beam (1) is provided with a plurality of positioning mechanisms that match the docking grooves (3) and the positioning slots (4) on both sides of the bridge panel (2). The positioning mechanism comprises a docking block (5), the docking block (5) is fixedly mounted on the top end of the main beam (1), and two groups of notches (6) are symmetrically connected to each other on the front and back of the docking block (5). Positioning blocks (7) are slidably provided on the two groups of notches (6), and the outer dimensions of the positioning blocks (7) are similar to those of the positioning slots (4). The two sets of positioning plugs (7) are of the same size, the inner sides of the two sets of positioning plugs (7) are fixedly connected with baffles (8), two sets of springs (9) are symmetrically fixedly connected between the two sets of baffles (8), the top end of the docking block (5) is connected with an inner pouring hole (10), the top end of the main beam (1) is provided with four sets of outer pouring holes (11) connected with the docking groove (3), the outer pouring holes (11) are aligned with the inner pouring holes (10), a plurality of bridge panels (2) are fixedly assembled on the two main beams (1) through the cooperation of the docking block (5) and the docking groove (3) and the positioning plugs (7) and the positioning slots (4), and a lifting rod (12) is fixedly provided in each set of outer pouring holes (11).

2. The assembled light steel plate composite beam bridge structure according to claim 1, characterized in that: Guide blocks (13) are fixedly provided at both left and right ends of the plurality of groups of baffles (8); guide grooves (14) are provided on the inner walls on both left and right sides of the plurality of groups of docking blocks (5) to cooperate with the guide blocks (13); and the plurality of groups of baffles (8) are slidably installed in the plurality of groups of docking blocks (5) through the cooperation between the guide blocks (13) and the guide grooves (14).

3. The assembled light steel plate composite beam bridge structure according to claim 2, characterized in that: Limiting blocks (15) are fixedly provided in the middle of the guide grooves (14) on the inner walls of the left and right sides of the plurality of pairs of docking blocks (5).

4. The assembled light steel plate composite beam bridge structure according to claim 3, characterized in that: The upper edges of the plurality of groups of external casting holes (11) are all provided with rounded corners (16).

5. The assembled light steel plate composite beam bridge structure according to claim 4, characterized in that: A plurality of pairs of the butt joint blocks (5) are fixedly welded to the top end of the main beam (1) by welding.

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