Foundation support of steel structure bridge

Abstract

The application relates to a foundation support of a steel structure bridge, which comprises a support body, the support body contains two mirror-symmetrically arranged E-shaped cross beams, a plurality of horizontal rods are arranged between the cross beams in equal intervals and horizontally and are fixed to the cross beams; the cross beam contains an upper layer plate, a middle layer plate and a lower layer plate which are arranged in parallel and are connected by a main body plate, the horizontal rods are fixed to the main body plate located between the upper layer plate and the middle layer plate; the middle layer plate is provided with an auxiliary support mechanism directly below the horizontal rods, the auxiliary support mechanism contains a V-shaped frame which is hingedly arranged, one end of the V-shaped frame is arranged below the middle layer plate opposite to the horizontal rods, and the other end of the V-shaped frame is arranged below a secondary beam connected with all the horizontal rods. The application improves the stability, safety and supporting force of the steel structure bridge floor steel plate structure through the change of the structure and the addition of the mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to a steel structure bridge, in particular to a foundation support of a steel structure bridge. BACKGROUND

[0002] Steel structure is a structure composed of steel materials, and is one of main building structure types. The structure is mainly composed of members such as beams, steel columns and steel trusses made of shaped steel and steel plates, and adopts rust removal and rust prevention processes such as silicification, pure manganese phosphating, water washing and drying, and galvanizing. Welding, bolts or rivets are usually used to connect between each member or part. Because the steel structure has a lighter weight and is easy to construct, it is widely used in fields such as large-scale workshops, venues, super high-rise buildings, etc. Steel has the characteristics of high strength, light weight, good overall rigidity, and strong deformation capacity, so it is particularly suitable for building large-span and super high and super heavy buildings; the material is homogeneous and isotropic, and is an ideal elastic body, which best meets the basic assumptions of general engineering mechanics; the material has good plasticity and toughness, can have large deformation, and can well withstand dynamic loads; the construction period is short; and the industrialization degree is high, and professional production with high mechanization degree can be carried out.

[0003] Many steel structures are used to make road pedestrian bridges, footbridges and the like, which are mainly positioned and fixed by bridge supports. Horizontal rods are installed at intervals between the cross beams on both sides of the bridge deck, and then the bridge deck steel plates are laid on the horizontal rods and fixed on the horizontal rods by screws and welding. The connection, fixation and force bearing of the bridge deck are completely concentrated on the cross beams and horizontal rods fixed around the bridge deck steel plates, and most of the bearing forces are mainly applied to the connection between the horizontal rods and the cross beams. This requires high rigidity and strength of the horizontal rods. In addition, the middle position of the bridge deck steel plate has small support force relative to the four sides, and too small steel plates increase the number of gas welding points, which has high risk and high maintenance problems, and too large steel plates are easy to cause concave and other hazards due to insufficient support force in the middle position. Therefore, the above technical problems of the steel structure bridge are researched and improved. SUMMARY

[0004] In view of the problems existing in the prior art, the present application provides a foundation support of a steel structure bridge, which can effectively solve the problems existing in the prior art.

[0005] The technical scheme of the present application is:

[0006] The application discloses a foundation support of a steel structure bridge, which comprises a support body, the support body comprises two E-shaped cross beams arranged in mirror symmetry, and a plurality of horizontal rods are arranged between the cross beams in equal intervals and horizontally and fixed on the cross beams; the cross beam comprises an upper layer plate, a middle layer plate and a lower layer plate arranged in parallel and connected by a main body plate, the horizontal rod is fixed on the main body plate located between the upper layer plate and the middle layer plate; the middle layer plate is provided with an auxiliary support mechanism directly below the horizontal rod, the auxiliary support mechanism comprises a V-shaped frame arranged in a hinged mode, one end of the V-shaped frame is arranged below the middle layer plate opposite to the horizontal rod, and the other end of the V-shaped frame is arranged below a secondary beam connected with all the horizontal rods.

[0007] The V-shaped frames are arranged in a hinged mode on the same horizontal shaft, and the horizontal shaft is fixed on the support body at two ends.

[0008] Fixing plates for fixing the horizontal shaft are arranged between the middle layer plate and the lower layer plate on both sides of the V-shaped frame.

[0009] The horizontal rod comprises a main support rod in a convex structure, and auxiliary support strips are symmetrically arranged on both sides of the convex part of the main support rod in a fixed mode, and the upper surfaces of the auxiliary support strips and the upper surface of the convex part of the main support rod are in the same horizontal plane.

[0010] The application has the following advantages:

[0011] The V-shaped frame is arranged in a hinged mode below the cross beam supporting the horizontal rod according to the interaction, conversion and decomposition of force, the downward gravity and the pressure borne by the horizontal rod are converted into supporting force on the other end of the V-shaped frame to support the middle part of the horizontal rod, so that the force concentration on both ends of the horizontal rod is avoided; the horizontal rod combined with the main support rod in a convex structure and the auxiliary support strips fixed on both sides is used to support the steel bridge deck plate, the force bearing area and the fixed position area of the bridge deck plate are expanded, the traditional structure of the bridge deck plate is changed, the problem that the middle part of the bridge deck plate bears large force and the supporting force is small is avoided, and the supporting force, stability and safety of the bridge deck plate are improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 The figure is a structural schematic diagram of the application.

[0013] Fig. 2 The figure is an expanded schematic diagram of the V-shaped frame of the application. DETAILED DESCRIPTION

[0014] In order to facilitate the understanding of those skilled in the art, the structure of the application will be further described in detail in combination with the drawings:

[0015] REFERENCE Figs. 1-2The utility model provides a kind of foundation support of steel structure bridge, including support body, the support body includes two mirror image symmetrical E-shaped crossbeam 1, and a plurality of horizontal rods 2 are horizontally arranged and are fixed on crossbeam 1 at equal intervals between crossbeam 1;The crossbeam 1 includes upper layer plate 11, middle layer plate 12 and lower layer plate 13 which are arranged in parallel and are connected by main body plate 14, and the horizontal rod 2 is fixed on the main body plate 14 located at the upper layer plate 11 and the middle layer plate 12 directly;The middle layer plate 12 is directly below the setting horizontal rod 2 and is provided with auxiliary support mechanism, and the auxiliary support mechanism includes hingedly arranged V-shaped frame 3, one end of the V-shaped frame 3 is arranged below the middle layer plate 12 opposite the horizontal rod 2, and the other end is arranged below secondary beam 4 connected to all horizontal rods 2;The V-shaped frame 3 is hingedly arranged on the same horizontal shaft 5, and the horizontal shaft 5 is fixed on the support body at both ends respectively;Fixing plate 15 for fixing horizontal shaft 5 is arranged on both sides of V-shaped frame 3 between middle layer plate 12 and lower layer plate 13;The horizontal rod 2 includes main support rod 21 of convex letter shape structure, and auxiliary support strip 22 is symmetrically fixed on both sides of the protruding part of main support rod 21, the upper surface of auxiliary support strip 22 is at the same horizontal plane with the upper surface of the protruding part of main support rod 21, and main support rod 21 and the auxiliary support strip 22 on both sides are integrated structure.The bridge deck steel plate is placed and fixed on horizontal rod 2, and is supported and fixed by three upper surfaces of the protruding part of main support rod 21 and auxiliary support strip 22.

[0016] The utility model sets traditional crossbeam 1 as E-shaped structure for the addition of structure and installation, and the central force-bearing part is supported by the additional auxiliary support mechanism, and according to the interaction, conversion and decomposition of force, the V-shaped frame 3 is hingedly arranged, and the downward gravity at one end is converted to upward support force at the other end, and then the position of the end of horizontal rod 2 end point is supported upward, and then the force concentrated at both ends of horizontal rod 2 is dispersed;And the auxiliary support mechanism acts on a secondary beam 4, and then the secondary beam 4 acts on multiple horizontal rods 2, so as to improve the stability of the base support.Again, the traditional horizontal rod 2 is set as the structure of the combination of main support rod 21 of convex letter shape structure and auxiliary support strip 22 fixed on both sides, so as to expand the force-bearing surface and fixed position, change the traditional bridge deck steel plate four around fixed and force-bearing structure, and then avoid the problem that the middle of bridge deck steel plate bears large force and the support force is small, so as to improve the support force, stability and safety of bridge deck steel plate installation.

[0017] The above only is the preferred embodiment of the utility model, and all equivalent changes and modifications made within the scope of the utility model application patent are included in the coverage of the utility model.

Claims

1. A foundation support for a steel structure bridge comprising a support body, characterized by: The support body comprises two mirror-symmetrically arranged E-shaped crossbeams, and a plurality of horizontal rods are arranged at equal intervals and horizontally between the crossbeams and are fixed to the crossbeams; the crossbeams comprise upper plates, middle plates and lower plates which are arranged in parallel and are connected by a main plate, the horizontal rods are fixed to the main plate located between the upper plates and the middle plates; the middle plates are each provided with an auxiliary support mechanism directly below the horizontal rods, the auxiliary support mechanism comprises a V-shaped frame which is hingedly arranged, one end of the V-shaped frame is arranged below the middle plate opposite to the horizontal rod, and the other end of the V-shaped frame is arranged below a secondary beam connecting all the horizontal rods; the V-shaped frames are each hingedly arranged on a same horizontal shaft, the horizontal shaft is fixed at both ends to the support body; the middle plates and the lower plates are each provided with a fixing plate for fixing the horizontal shaft on both sides of the V-shaped frame; the horizontal rod comprises a main support rod in a convex shape, auxiliary support strips are symmetrically and fixedly arranged on both sides of the protruding part of the main support rod, and the upper surfaces of the auxiliary support strips and the upper surface of the protruding part of the main support rod are at the same horizontal plane.

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