CN211665550U - Anti-overturning device suitable for integral section box girder - Google Patents

Abstract

The utility model discloses an antidumping device suitable for integral section case roof beam, including pier and antidumping device, the equal fixedly connected with support in both sides at pier top, the top fixedly connected with girder of support, the equal fixedly connected with antidumping device in both sides of girder bottom, antidumping device includes embedded steel bar, embedded steel bar's top is inlayed in the bottom of girder, embedded steel bar's the pre-buried steel sheet of bottom fixedly connected with, the bottom fixedly connected with steel sheet of pre-buried steel sheet, the left and right sides of rear side steel sheet all runs through and is provided with the reinforcing bar. The utility model discloses a cooperation in embedded steel bar, stiff end, steel sheet, reinforcing bar, expansion end, stiffener, pre-buried steel sheet and reinforcing bar hole is used, under the condition that does not increase the investment, provides a simple structure, convenient construction, removable antidumping device, improves bridge antidumping ability greatly, has solved the easy unstability of cross bridge problem of toppling.

Description

Anti-overturning device suitable for integral section box girder

Technical Field

The utility model relates to a bridge engineering technical field specifically is an antidumping device suitable for integral section case roof beam.

Background

The girder bridge is the most common bridge type, has the advantages of simple line type, convenient construction, definite stress and the like, is widely applied to modern city and highway traffic, but the recent several overturning events cause the thinking of bridge workers, the bridge overturning means that under the action of vehicle load unbalance loading, the stabilizing moment provided by the upper girder is smaller than the overturning moment, so that the transverse bridge is inclined to be unstable, the integrity of the girder is basically intact, no obvious strength damage exists, the stabilizing moment of the upper girder is invariable under the conditions of determining the structural form, the structural size, the material performance, the support interval and the like, the overturning moment is changed due to different vehicle loads, an anti-overturning stability coefficient is given during design, namely the stabilizing moment is not smaller than 2.5 times of the overturning moment, but when the vehicle is overloaded seriously, the overturning moment generated by the vehicle load is larger than the stabilizing moment, the transverse bridge topples over in the direction of instability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an antidumping device suitable for integral section case roof beam possesses the effectual advantage of antidumping, has solved the easy unstability problem of toppling of cross bridge.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an antidumping device suitable for integral section case roof beam, includes pier and antidumping device, the equal fixedly connected with support in both sides at pier top, the top fixedly connected with girder of support, the equal fixedly connected with antidumping device in both sides of girder bottom, antidumping device includes embedded steel bar, embedded steel bar's top is inlayed in the bottom of girder, embedded steel bar's the pre-buried steel sheet of bottom fixedly connected with, the bottom fixedly connected with steel sheet of pre-buried steel sheet, the left and right sides of rear side steel sheet all runs through and is provided with the reinforcing bar, the front side of reinforcing bar runs through to the front side of front side steel sheet.

Preferably, the embedded steel bars are embedded in the bottom of the front main beam and the rear main beam respectively, the top of the embedded steel plate is in contact with the bottom of the main beams, and the anti-overturning device is arranged at the bottom of the beam end bottom plate of the main beams of the two adjacent header beams.

Preferably, the front side, the rear side, the left side and the right side of the steel plate are fixedly connected with stiffening plates, a fixed end is fixedly connected between the rear side of the steel bar and the back surface of the rear side steel plate, and a movable end is fixedly connected between the front side of the steel bar and the front side of the front side steel plate.

Preferably, both sides of the front surface of the steel plate are provided with reinforcing steel bar holes matched with reinforcing steel bars, and inner cavities of the reinforcing steel bar holes are in close contact with the surfaces of the reinforcing steel bars.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a cooperation in embedded steel bar, stiff end, steel sheet, reinforcing bar, expansion end, stiffener, pre-buried steel sheet and reinforcing bar hole is used, under the condition that does not increase the investment, provides a simple structure, convenient construction, removable antidumping device, improves bridge antidumping ability greatly, has solved the easy unstability of cross bridge problem of toppling.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the structure of the present invention;

FIG. 3 is a partial side view of the anti-overturning device of the present invention;

fig. 4 is a partial front view structural diagram of the anti-overturning device of the present invention.

In the figure: the bridge comprises a pier 1, a support 2, a girder 3, an anti-overturning device 4, embedded steel bars 41, fixed ends 42, steel plates 43, steel bars 44, movable ends 45, stiffening plates 46, embedded steel plates 47 and steel bar holes 48.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, an anti-overturning device suitable for integral section box girders comprises a bridge pier 1 and an anti-overturning device 4, wherein both sides of the top of the bridge pier 1 are fixedly connected with a support 2, the top of the support 2 is fixedly connected with a main girder 3, both sides of the bottom of the main girder 3 are fixedly connected with the anti-overturning device 4, the anti-overturning device 4 comprises embedded steel bars 41, the embedded steel bars 41 are respectively embedded in the bottoms of the front and rear main girders 3, the top of the embedded steel bar 47 is in contact with the bottom of the main girder 3, the anti-overturning device 4 is arranged at the bottom of the girder end plates of the adjacent two box girders 3, the top of the embedded steel bar 41 is embedded at the bottom of the main girder 3, the bottom of the embedded steel bar 41 is fixedly connected with an embedded steel plate 47, the bottom of the embedded steel plate 47 is fixedly connected with a steel plate 43, both sides of the rear steel plate 43 are provided with steel, the front side and the rear side and the left side and the right side of the steel plate 43 are fixedly connected with stiffening plates 46, the rear side of the steel bar 44 is fixedly connected with a fixed end 42 with the back surface of the rear steel plate 43, the front side of the steel bar 44 is fixedly connected with a movable end 45 with the front side of the front steel plate 43, two sides of the front surface of the steel plate 43 are provided with steel bar holes 48 matched with the steel bar 44, inner cavities of the steel bar holes 48 are in close contact with the surface of the steel bar 44, and the reinforcing plates 41, the fixed end 42, the steel plate 43, the steel bar 44, the movable end 45, the stiffening plates 46, the embedded steel plate 47 and the steel bar holes 48 are matched for use.

When the expansion joint is used, the anti-overturning device 4 is arranged at the bottom of the beam end bottom plate of the main beam 3 of the two adjacent header beams to connect the two adjacent header beams together, and the allowable sliding distance is set in the longitudinal bridge and the transverse bridge according to the width of the expansion joint and the shearing deformation of the transverse support 2 so as to adapt to the deformation of the beam end without influencing the function of the expansion joint; when a certain main beam 3 is subjected to extreme load, such as serious overload of an automobile, and the self stabilizing moment of the main beam is not enough to resist the overturning moment, the adjacent main beams bear the force through the overturning resisting device 4, and bear the overturning moment together, so that the overturning resisting capacity is greatly improved.

In summary, the following steps: this antidumping device suitable for integral section box girder through the cooperation of pre-buried reinforcing bar 41, stiff end 42, steel sheet 43, reinforcing bar 44, expansion end 45, stiffening plate 46, pre-buried steel sheet 47 and reinforcing bar hole 48 uses, has solved the easy unstability of cross bridge and has toppled the problem.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides an antidumping device suitable for integral section case roof beam, includes pier (1) and antidumping device (4), its characterized in that: the equal fixedly connected with support (2) in both sides at pier (1) top, the top fixedly connected with girder (3) of support (2), the equal fixedly connected with antidumping device (4) in both sides of girder (3) bottom, antidumping device (4) are including embedded steel bar (41), the bottom in girder (3) is inlayed at the top of embedded steel bar (41), the pre-buried steel sheet (47) of bottom fixedly connected with of embedded steel bar (41), the bottom fixedly connected with steel sheet (43) of pre-buried steel sheet (47), both sides all run through and are provided with reinforcing bar (44) about rear side steel sheet (43), the front side of reinforcing bar (44) runs through to the front side of front side steel sheet (43).

2. The anti-overturning device suitable for the integral section box girder of claim 1, wherein: the embedded steel bars (41) are embedded in the bottom of the front main beam and the rear main beam (3) respectively, the top of the embedded steel plate (47) is in contact with the bottom of the main beam (3), and the anti-overturning device (4) is arranged at the bottom of the beam end bottom plate of the adjacent two header beam main beams (3).

3. The anti-overturning device suitable for the integral section box girder of claim 1, wherein: the steel plate comprises a steel plate (43), wherein stiffening plates (46) are fixedly connected to the front side, the rear side and the left side and the right side of the steel plate (43), a fixed end (42) is fixedly connected between the rear side of a steel bar (44) and the back surface of the rear side steel plate (43), and a movable end (45) is fixedly connected between the front side of the steel bar (44) and the front side of the front side steel plate (43).

4. The anti-overturning device suitable for the integral section box girder of claim 1, wherein: reinforcing steel bar holes (48) matched with the reinforcing steel bars (44) are formed in the two sides of the front surface of the steel plate (43), and the inner cavities of the reinforcing steel bar holes (48) are tightly contacted with the surfaces of the reinforcing steel bars (44).

Images