Fabricated K truss structure for transverse reinforcement of composite beam bridge

Abstract

The utility model discloses an assembly type K truss structure for transverse reinforcement of a composite beam bridge, which comprises a composite beam bridge, a truss is arranged at the bottom end of the composite beam bridge, a fixed angle iron is fixedly welded at the top end of the truss, the top end of the fixed angle iron is matched with the bottom end of the composite beam bridge in shape, and the fixed angle iron and the composite beam bridge are fixedly arranged. A plurality of fixing supports are installed at the top end of the truss at equal intervals at a time, the whole fixing supports are in a V-shaped forked shape, and fixing plates are fixedly installed at the top ends of the fixing supports. By arranging the trusses, the fixing supports, the arc-shaped protrusions and the arc-shaped arch faces, when the whole spliced bridge is put into use, the trusses and the fixing supports can integrally form a K-shaped truss structure to transversely support and reinforce the bottom end of the spliced bridge, the transverse rigidity of the bridge and the local rigidity of a key section are greatly improved, and the service life of the spliced bridge is prolonged. The problems of local deformation, strain, crack width and the like of the bridge are effectively reduced, and load transverse distribution characteristics are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building auxiliary reinforcing structure technical field more specifically, the utility model is a kind of assembly type K truss structure for the transverse reinforcement of composite beam bridge. BACKGROUND

[0002] Composite beam bridge refers to the composite structure bridge with beam bridge span as basic structure, after two or more systems overlap, the reaction nature of overall structure is still same as the characteristics of beam under bending action load. The characteristics of this kind of bridge are mainly reflected in design calculation work heavy, construction details and internal force complex. Using group nail prefabricated slab continuous composite beam bridge can greatly reduce the structure secondary internal force and concrete tensile stress caused by concrete shrinkage and creep effect.

[0003] The composite beam bridge in the prior art is mainly transversely reinforced by the internal concrete diaphragm plate to improve the strength of the bottom end of the overall beam bridge, but this process leads to long traffic closure time near the construction site, large increase in the self weight of the bridge, complex construction process and other drawbacks, so the application provides an additional assembly type K truss structure to facilitate the transverse reinforcement of the composite beam bridge. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides an assembly type K truss structure for the transverse reinforcement of composite beam bridge, by setting truss, fixed support and arc convex and arc arch surface, when the spliced bridge is put into use as a whole, a K-shaped truss structure can be formed by the truss and the fixed support as a whole to transversely support and reinforce the bottom end of the spliced bridge, and the arching direction of the arc convex and the central axis of the arc arch surface can be distributed on the same vertical line, so that when the fixed support expands to the two sides as a whole, the arc convex and the arc arch surface can effectively provide support force to the two sides, thereby avoiding excessive stress in the middle of the fixed support and the problems of reduced structural strength and local cracks, greatly improving the lateral stiffness of the bridge and the local stiffness of the key section, effectively reducing the problems of local deformation, strain and crack width of the bridge, and improving the load transverse distribution characteristics, to solve the problems proposed in the above background art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an assembled K-truss structure for transverse reinforcement of a composite beam bridge, comprising a composite bridge, a truss is installed at the bottom end of the composite bridge, a fixed angle iron is fixedly welded to the top end of the truss, the top end of the fixed angle iron is adapted to the shape of the bottom end of the composite bridge and is fixedly installed therewith, a plurality of fixed brackets are equidistantly installed at the top end of the truss, the fixed bracket is in a V-shaped fork shape as a whole, a fixed plate is fixedly installed at the top end of the fixed bracket, the connection parts of the fixed bracket, the truss and the fixed angle iron are all provided with mounting ribs, side support brackets are fixedly installed at the left and right ends of the fixed bracket respectively, an arc-shaped arch surface is provided at the middle position of the bottom end of the fixed bracket, and an arc-shaped protrusion is fixedly installed at the top end of the middle of the arc-shaped arch surface;

[0006] The truss and the fixed bracket form a K-shaped truss structure as a whole. The middle part of the side support frame is set to be arc-shaped, and the side support frame as a whole is arched toward the outside of the fixed bracket. The connection between the arc surface and the inner wall surface of the fixed bracket is transitioned by a rounded corner.

[0007] In a preferred embodiment, a layer of HF-ECC concrete material is sprayed on the entire surface of the fixing bracket and the truss.

[0008] In a preferred embodiment, the mounting ribs are arranged perpendicularly to the fixing brackets, the trusses and the fixing plates, and the mounting ribs are in a sheet-like structure as a whole.

[0009] In a preferred embodiment, the bottom end of the fixing bracket as a whole has an outward expansion trend, and the expansion directions of the upper and lower ends of the fixing bracket are oppositely distributed.

[0010] In a preferred embodiment, the fixing plate and the fixing bracket are fixed by welding.

[0011] In a preferred embodiment, the overall curvature of the arcuate surface is smaller than the curvature of the arcuate protrusion, and the arching direction of the arcuate protrusion maintains the same vertical line distribution as the central axis of the arcuate surface.

[0012] The technical effects and advantages of this utility model are:

[0013] The utility model discloses a truss, fixed support and arc convex and arc arch surface are set up, when the integral bridge is put into use, can form a K character truss structure through truss and fixed support whole, to the bottom of spliced bridge is supported and reinforced horizontally, and the arching direction of arc convex and arc arch surface can be kept with the same vertical line distribution of arc arch surface central axis, when fixed support whole expands to both sides, arc convex and arc arch surface can effectively provide the support force of both sides, thereby avoiding the middle stress of fixed support too large, and the structure strength drops and the situation of local crack, the lateral rigidity and key section local rigidity of bridge are improved greatly, effectively reduce bridge local deformation, strain and crack width etc. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the local three-dimensional structure schematic diagram of the utility model;

[0016] Figure 3 It is the truss and fixed support whole three-dimensional structure schematic diagram of the utility model;

[0017] Figure 4 It is the whole front view schematic diagram of the utility model;

[0018] Figure 5 It is the truss and fixed support whole structure schematic diagram of the utility model.

[0019] The sign is: 1, combined bridge;2, truss;3, fixed angle iron;4, fixed support;5, fixed plate;6, install muscle board;7, side support frame;8, arc arch surface;9, arc convex. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described below clearly and completely in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] As attached Figure 1 to attached Figure 5The utility model provides a kind of assembled K truss structure for the transverse reinforcement of composite beam bridge, including composite bridge 1, the bottom end of the composite bridge 1 is equipped with truss 2, the top of the truss 2 is fixedly welded with fixed angle iron 3, the top of the fixed angle iron 3 is compatible with the shape of the bottom end of composite bridge 1, and is fixedly installed with it, a plurality of fixed supports 4 are installed at the top of the truss 2 once equidistantly, the fixed support 4 is overall V-shaped bifurcation, the top of the fixed support 4 is fixedly installed with fixed plate 5, the connecting parts of the fixed support 4, truss 2 and fixed angle iron 3 are all provided with mounting rib plate 6, the left and right ends of the fixed support 4 are respectively fixedly installed with side support frame 7, the middle position of the bottom end of the fixed support 4 is provided with arc arch surface 8, the middle top of the arc arch surface 8 is fixedly installed with arc convex 9.

[0022] The truss 2 and the fixed support 4 form a K-shaped truss structure as a whole, the middle part of the side support frame 7 is arc-shaped, and the side support frame 7 as a whole is arched towards the outside of the fixed support 4.

[0023] The fixed support 4 and the truss 2 are overall sprayed with a layer of HF-ECC concrete material, the mounting rib plate 6 is vertically arranged between the fixed support 4, the truss 2 and the fixed plate 5, the mounting rib plate 6 is in a sheet structure as a whole, the bottom end of the fixed support 4 has an outward expansion trend, and the expansion directions of the upper and lower ends of the fixed support 4 are oppositely distributed, and the fixed plate 5 is fixedly connected with the fixed support 4 by welding.

[0024] The HF-ECC material sprayed on the surface of the fixed support 4 and the truss 2 can further improve the structural strength of the truss 2 and the fixed support 4 as a whole, effectively improve the corrosion resistance, and avoid the problems of rapid oxidation and corrosion of the truss 2 and the fixed support 4 caused by external rainwater erosion and air corrosion.

[0025] With reference to the specific description in the specification Figure 3 - the arc convex 9 is arranged on the arc arch surface 8, the arc convex 9 is arranged on the arc arch surface 8, and the arc convex 9 is arranged on the arc arch surface 8. Figure 5

[0026] The utility model discloses a kind of assembled K truss structure for the transverse reinforcement of composite beam bridge, including composite bridge 1, the bottom end of the composite bridge 1 is equipped with truss 2, the top of the truss 2 is fixedly welded with fixed angle iron 3, the top of the fixed angle iron 3 is compatible with the shape of the bottom end of composite bridge 1, and is fixedly installed with it, a plurality of fixed supports 4 are installed at the top of the truss 2 once equidistantly, the fixed support 4 is overall V-shaped bifurcation, the top of the fixed support 4 is fixedly installed with fixed plate 5, the connecting parts of the fixed support 4, truss 2 and fixed angle iron 3 are all provided with mounting rib plate 6, the left and right ends of the fixed support 4 are respectively fixedly installed with side support frame 7, the middle position of the bottom end of the fixed support 4 is provided with arc arch surface 8, the middle top of the arc arch surface 8 is fixedly installed with arc convex 9.

[0027] The working principle of the utility model:​

[0028] First step: first, the operator normally assembles the various components of the device, and then normally uses the device.

[0029] Second step: first, the operator fixes the truss 2 and the fixed support 4 as a whole to the bottom end of the combined bridge 1 through existing welding and inlay means, at this time, the truss 2 and the fixed support 4 can form a K-shaped truss structure as a whole to provide lateral support and reinforcement for the bottom end of the spliced bridge, and the arching direction of the arc-shaped protrusion 9 and the central axis of the arc-shaped arch surface 8 can be distributed on the same vertical line, so that when the fixed support 4 as a whole expands to the two sides, the arc-shaped protrusion 9 and the arc-shaped arch surface 8 can effectively provide support force to the two sides, thereby avoiding excessive stress on the middle part of the fixed support 4, and the structure strength and local cracks are reduced, the lateral stiffness and local stiffness of the key section of the bridge are greatly improved, the local deformation, strain and crack width of the bridge are effectively reduced, the load lateral distribution characteristics are improved, and finally the installation process of the truss 2 and the fixed support 4 is completed.

[0030] Third step: first, the operator normally closes the device, then the operator checks whether the fixation between the various components of the device is normal, and then replaces and maintains the aging and seriously worn parts inside the device.

[0031] Finally, it should be pointed out that in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0032] Secondly: the utility model discloses the embodiment of the drawings only relates to the structure involved in the embodiment of the present disclosure, and other structures can refer to the usual design, and under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0033] Finally: the above only for the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An assembled K-truss structure for transverse reinforcement of a composite beam bridge, comprising a composite bridge (1), a truss (2) being installed at the bottom end of the composite bridge (1), and characterized in that: The top of the truss (2) is fixedly welded with a fixed angle iron (3), the top of the fixed angle iron (3) is adapted to the shape of the bottom of the combined bridge (1) and is fixedly installed therewith, the top of the truss (2) is equidistantly installed with a plurality of fixed brackets (4), the fixed bracket (4) is in a V-shaped bifurcated shape as a whole, the top of the fixed bracket (4) is fixedly installed with a fixed plate (5), the connection parts of the fixed bracket (4) and the truss (2) and the fixed angle iron (3) are all provided with mounting ribs (6), the left and right ends of the fixed bracket (4) are respectively fixedly installed with side support frames (7), the middle position of the bottom end of the fixed bracket (4) is provided with an arcuate arch surface (8), and the top of the middle part of the arcuate arch surface (8) is fixedly installed with an arcuate protrusion (9); The truss (2) and the fixed bracket (4) form a K-shaped truss structure as a whole. The middle part of the side support frame (7) is set to be arc-shaped, and the side support frame (7) is arched toward the outside of the fixed bracket (4) as a whole. The connection between the arc-shaped arch surface (8) and the inner wall surface of the fixed bracket (4) is transitionally set through a rounded corner.

2. The assembled K-truss structure for transverse reinforcement of a composite beam bridge according to claim 1, characterized in that: The entire surface of the fixed bracket (4) and the truss (2) is sprayed with a layer of HF-ECC concrete material.

3. The assembled K-truss structure for transverse reinforcement of a composite beam bridge according to claim 1, characterized in that: The mounting rib plate (6) is vertically arranged to the fixed bracket (4), the truss (2) and the fixed plate (5), and the mounting rib plate (6) is a sheet-like structure as a whole.

4. The assembled K-truss structure for transverse reinforcement of a composite beam bridge according to claim 1, characterized in that: The bottom end of the fixed bracket (4) as a whole has an outward expansion trend, and the expansion directions of the upper and lower ends of the fixed bracket (4) are oppositely distributed.

5. The assembled K-truss structure for transverse reinforcement of a composite beam bridge according to claim 1, characterized in that: The fixing plate (5) and the fixing bracket (4) are fixed by welding.

6. The assembled K-truss structure for transverse reinforcement of a composite beam bridge according to claim 1, characterized in that: The overall curvature of the arc-shaped arch surface (8) is smaller than the curvature of the arc-shaped protrusion (9), and the arching direction of the arc-shaped protrusion (9) maintains the same vertical line distribution as the central axis of the arc-shaped arch surface (8).

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