Corrugated web steel guide beam for pushing

Abstract

The utility model discloses a corrugated web steel guide beam for pushing, relates to the technical field of steel bridge pushing construction, and aims to solve the problems that in the prior art, a traditional steel guide beam web adopts a straight web, the thickness is large, the steel consumption is large, and the bending resistance and shearing resistance are weak. The uniform-section H-shaped main beam is connected with the variable-section H-shaped main beam through the connecting mechanism, the uniform-section H-shaped main beam is connected with the short-joint H-shaped main beam, webs of the uniform-section H-shaped main beam, the variable-section H-shaped main beam and the short-joint H-shaped main beam are corrugated webs, two tail ends of the corrugated webs are straight webs, the connecting mechanism comprises end plates, the end plates are fixed to the ends of the straight webs, and the end plates are connected with the variable-section H-shaped main beam and the short-joint H-shaped main beam. The web plate is arranged to be the corrugated web plate which is small in thickness and small in steel consumption, the overall bending resistance and the overall shearing resistance are higher, the safety of the H-shaped web plate is improved, and the workshop manufacturing progress and the site construction progress are accelerated through the simple structural form. The H-shaped web plate type steel-concrete composite beam has the advantages that the web plate is arranged to be the corrugated web plate which is small in thickness and small in steel consumption, so that the overall bending resistance and the overall shearing resistance are higher, and the safety of the H-shaped web plate type steel-concrete composite beam is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of incremental launching construction of steel bridges, in particular to a corrugated web steel pilot truss for incremental launching. Background Technique

[0002] In recent years, the expressways, railways and bridges in China have developed rapidly. A large number of steel structure bridges are adopted in construction. Most of the steel structure bridges span expressways, railways, rivers, etc. The traditional in-situ hoisting method cannot be used for construction, and the incremental launching construction is mostly adopted. The incremental launching construction requires the use of a steel pilot truss for incremental launching. The webs of traditional steel pilot trusses adopt straight webs, which have a large thickness, a large amount of steel used, and weak bending and shear resistance. The height of the steel pilot truss is designed according to the actual height of the steel box girder. The main girder webs need to adopt full penetration welding, and the main girder butt joints adopt welded connections. The fabrication of the steel pilot truss in the workshop and the on-site assembly welding amount are relatively large, increasing the deformation amount of the steel pilot truss and affecting the processing quality of the steel pilot truss. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a corrugated web steel pilot truss for incremental launching, which can effectively solve the problems in the background technique.

[0004] In order to achieve the above purpose, the utility model discloses a corrugated web steel pilot truss for incremental launching. The technical solution adopted is that it includes an equal-section H-shaped main girder. The equal-section H-shaped main girder is connected to a variable-section H-shaped main girder through a connecting mechanism. The other end of the equal-section H-shaped main girder is connected to a short joint H-shaped main girder. The webs of the equal-section H-shaped main girder, the variable-section H-shaped main girder and the short joint H-shaped main girder are corrugated webs. The two ends of the corrugated web are straight webs. The connecting mechanism includes an end plate. The end plate is vertically fixed to the end of the straight web. The variable-section H-shaped main girder and the short joint H-shaped main girder are butt-jointed through the end plate and then fixed by bolts. There are upper connecting plates fixedly connected to the outside of the upper and lower flange plates at the interfaces of the equal-section H-shaped main girder, the variable-section H-shaped main girder and the short joint H-shaped main girder, and lower connecting plates fixedly connected to the inside of the upper and lower flange plates.

[0005] As a preferred technical solution of the utility model, first ribs are arranged at the wing plates of the corrugated web and the equal-section H-shaped main girder, the variable-section H-shaped main girder and the short joint H-shaped main girder. The first ribs are used to strengthen the stiffness between the corrugated web and the wing plates.

[0006] As a preferred technical solution of the utility model, second ribs are arranged at the connection between the end plate and the corrugated web. The second ribs are used to strengthen the end plate and the corrugated web.

[0007] As a preferred technical solution of the present utility model, a notch is provided at the other end of the variable cross-section H-shaped main beam. When the variable cross-section H-shaped main beam is lapped onto the pier, the end of the variable cross-section H-shaped main beam will be pressed down due to the weight principle, resulting in the end of the variable cross-section H-shaped main beam being lower than the height of the pier and making it impossible to lap. The notch is used to avoid the problem of being unable to lap due to the downward pressure.

[0008] As a preferred technical solution of the present utility model, a connecting beam is detachably connected between the two corrugated webs to increase the stiffness.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: by setting the web as the corrugated web, the corrugated web has a thinner thickness and less steel consumption, and the overall bending and shear resistance capabilities are stronger, improving its own safety. The simple structural form speeds up the workshop production progress and on-site construction progress. The detachable and reusable design greatly saves costs. The notch can solve the problem that when the variable cross-section H-shaped main beam is lapped onto the pier, the end of the variable cross-section H-shaped main beam will be pressed down due to the weight principle, resulting in the end of the variable cross-section H-shaped main beam being lower than the height of the pier and making it impossible to lap. The notch is used to avoid the problem of being unable to lap due to the downward pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of the present utility model;

[0011] Figure 2 It is an enlarged view of part A of the present utility model;

[0012] Figure 3 It is an enlarged view of part B of the present utility model;

[0013] Figure 4 It is an exploded view of the connecting mechanism of the present utility model.

[0014] In the figure: 1, equal cross-section H-shaped main beam; 2, variable cross-section H-shaped main beam; 201, notch; 3, short joint H-shaped main beam; 4, corrugated web; 401, straight web; 5, first rib plate; 6, connecting mechanism; 601, end plate; 602, second rib plate; 603, upper connecting plate; 604, lower connecting plate; 7, connecting beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0016] As shown Figures 1 to 4 in the figure, the utility model discloses a corrugated web steel guide beam for jacking. The adopted technical solution is as follows: it includes an equal-section H-shaped main beam 1, a variable-section H-shaped main beam 2, and a short joint H-shaped main beam 3. The webs of the equal-section H-shaped main beam 1, the variable-section H-shaped main beam 2, and the short joint H-shaped main beam 3 are corrugated webs 4. Both ends of the corrugated web 4 are straight webs 401. The corrugated web 4 is welded with a first rib plate 5 at the upper wing plate of the equal-section H-shaped main beam 1, the variable-section H-shaped main beam 2, and the short joint H-shaped main beam 3. There are multiple first rib plates 5. The equal-section H-shaped main beam 1, the variable-section H-shaped main beam 2, and the short joint H-shaped main beam 3 are connected by a connecting mechanism 6. The connecting mechanism 6 includes an end plate 601. The end plate 601 is welded on the straight web 401 at the connecting end face of the variable-section H-shaped main beam 2 and the short joint H-shaped main beam 3 with the equal-section H-shaped main beam 1. Three second rib plates 602 are welded between the end plate 601 and the straight web 401. The variable-section H-shaped main beam 2 and the short joint H-shaped main beam 3 are connected to the equal-section H-shaped main beam 1 through the end plate 601 and bolts. Upper connecting plates 603 are arranged on the outer sides of the upper and lower wing plates at the connecting ends of the equal-section H-shaped main beam 1 with the variable-section H-shaped main beam 2 and the short joint H-shaped main beam 3, and lower connecting plates 604 are arranged inside the upper and lower wing plates and are fixed by bolts.

[0017] As a preferred technical solution of the utility model, the short joint H-shaped main beam 3 is connected to the bridge. A notch 201 is opened at the end of the variable-section H-shaped main beam 2. A connecting beam 7 is fixedly connected between the two corrugated webs 4 by bolts. For the connecting beam 7 that needs to be connected to the end plate 601, the end plate 601 will be lengthened to make space for bolt connection for the connecting beam 7 as Figure 3 shown in the figure.

[0018] The working principle of the utility model: Fix the short joint H-shaped main beam 3 on the bridge, then connect the short joint H-shaped main beam 3 with the equal-section H-shaped main beam 1 through the connecting mechanism 6, align the end plates 601 and fix them with bolts. Place the upper connecting plates 603 on the outer sides of the wing plates and the lower connecting plates 604 on the inner sides of the wing plates, and fix the wing plates, the upper connecting plates 603, and the lower connecting plates 604 together with bolts to increase the stability of the connection area. Then fix the connecting beam 7 at the corresponding position with bolts, and the jacking construction can be carried out.

[0019] The mechanical connections involved in the utility model are common means adopted by those skilled in the art and can obtain technical inspiration through a limited number of tests, belonging to common general knowledge.

[0020] The components not described in detail in this article are prior art.

[0021] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A corrugated web steel guide beam for jacking, comprising a uniform cross-section H-shaped main beam (1), characterized in that: The uniform cross-section H-shaped main beam (1) is connected to the variable cross-section H-shaped main beam (2) via a connecting mechanism (6); the other end of the uniform cross-section H-shaped main beam (1) is connected to the short-joint H-shaped main beam (3); the webs of the uniform cross-section H-shaped main beam (1), the variable cross-section H-shaped main beam (2) and the short-joint H-shaped main beam (3) are corrugated webs (4); both ends of the corrugated webs (4) are straight webs (401); the connecting mechanism (6) comprises an end plate (601); The end plate (601) is vertically fixed to the end of the straight web plate (401); the variable-section H-shaped main beam (2) and the short-joint H-shaped main beam (3) are butt-jointed with each other through the end plate (601) and then fixed with bolts; at the interface between the uniform-section H-shaped main beam (1), the variable-section H-shaped main beam (2) and the short-joint H-shaped main beam (3), the outer sides of the upper and lower wing plates are fixedly connected with an upper connecting plate (603), and the inner sides of the upper and lower wing plates are fixedly connected with a lower connecting plate (604).

2. The corrugated web steel guide beam for jacking according to claim 1, characterized in that: The corrugated web (4) and the wing plates of the uniform cross-section H-shaped main beam (1), the variable cross-section H-shaped main beam (2) and the short joint H-shaped main beam (3) are provided with first ribs (5).

3. The corrugated web steel guide beam for jacking according to claim 1, characterized in that: A second rib (602) is provided at the connection between the end plate (601) and the corrugated web (4).

4. The corrugated web steel guide beam for jacking according to claim 1, characterized in that: The other end of the variable-cross-section H-shaped main beam (2) is provided with a notch (201).

5. The corrugated web steel guide beam for jacking according to claim 1, characterized in that: A connecting beam (7) is detachably connected between the two corrugated webs (4).

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