CN218562113U

CN218562113U - Box type steel structure bridge top pushes away uses steel nose girder

Info

Publication number: CN218562113U
Application number: CN202223128481.3U
Authority: CN
Inventors: 王猛; 李晓宁; 林森; 董露; 赵秋阳
Original assignee: Henan Dafang Heavy Equipment Co Ltd
Current assignee: Henan Dafang Heavy Equipment Co Ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-03-03
Anticipated expiration: 2032-11-24

Abstract

The utility model provides a box steel structure bridge top pushes away uses steel nose girder, including two girders, connect through horizontal truss between two girders, two girder length equal and be parallel to each other, the preceding terminal surface of two girders is the inclined plane, and the preceding terminal surface of two girders is located the coplanar and forms the mismatch, and this mismatch corresponds with bottom plate, web, the roof of case roof beam and is connected. This box steel construction bridge pushes away uses steel nose girder corresponds with the bottom plate, web, the roof of box roof beam through the stagger, and the welding seam is more difficult to the fracture, and is safer.

Description

Box-type steel structure bridge top pushes away uses steel nose girder

Technical Field

The utility model relates to a steel construction equipment, specific theory has related to a box steel construction bridge top pushes away uses steel nose girder.

Background

The steel guide beam is also called nose bridge. When the beam is erected by a pulling method or a pushing method, the temporary auxiliary structure is arranged at the front (rear) end of the beam. The steel guide beam is a steel truss beam or a steel plate beam with a uniform cross section or a variable cross section, and the front end of the main beam is provided with an embedded part which is connected with the steel guide beam in a fastening way. The shape of the guide beam is that the bottom edge and the bottom of the box girder are on the same plane. The bottom edge of the front end is in an upward arc shape so as to smoothly pass through the pier during pushing.

The steel guide beam structures on the market are many, for example: chinese patent CN214783195U discloses a guide beam for steel box girder pushing, the main beam of the guide beam is stepped in the length direction, and the sectional area of the main beam of the guide beam is reduced in sequence, so as to satisfy the stress, reduce the deflection value of the front end of the guide beam, reduce the material consumption for manufacturing the guide beam, and reduce the manufacturing cost of the guide beam. Chinese patent CN216194054U discloses a guide beam for steel box girder pushing construction, wherein an L-shaped end is arranged at the end of the guide beam, so that the guide beam can be conveniently erected on a front temporary pier when moving forward, and a stress point is provided for jacking when the front end of the guide beam is downwarped. However, in the use process of the steel guide beams, the end parts of the guide beams are directly welded with the box beam to form a straight welding seam, and the welding edges are stressed greatly and are easy to crack.

In order to solve the above problems, people always seek an ideal technical solution.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a box steel construction bridge top pushes away uses steel nose girder to the not enough of prior art.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

the utility model provides a box steel structure bridge top pushes away uses steel nose girder, includes two girders, connects through horizontal truss between two girders, and two girder lengths equal and be parallel to each other, and the preceding terminal surface of two girders is the inclined plane, and the preceding terminal surface of two girders is located the formation mismatch on the coplanar, and this mismatch corresponds with bottom plate, web, the roof of case roof beam and is connected.

The inclination angle of the front end surface of the main beam is 65-70 degrees.

The main beam is of a multi-section structure and comprises a first connecting section, a second connecting section, a third connecting section, a fourth connecting section, a fifth connecting section and a sixth connecting section which are sequentially connected from front to back, wherein the front end of the first connecting section is used for connecting the box girder, and the sixth connecting section is used for lapping the temporary pier; in the transverse direction, the widths of the first connecting section, the fourth connecting section and the fifth connecting section are gradually reduced from front to back, and the second connecting section and the sixth connecting section are straight sections; in the longitudinal direction, the height of the fourth connecting section is gradually reduced from front to back.

The girder includes entablature, bottom end rail, is provided with a plurality of supporting element between entablature, the bottom end rail, and every supporting element includes three vertical braces and two bracing, and three vertical braces is parallel to each other, and the vertical braces that is located the centre and two bracing form two right angled triangle.

The transverse truss comprises a plurality of N-shaped connecting frames and an X-shaped connecting frame which are sequentially connected from front to back, and the rear ends of the fifth connecting sections of the two main beams are connected through the X-shaped connecting frame.

Compared with the prior art, the utility model has the beneficial effect of doing, the utility model discloses a box steel construction bridge top pushes away uses steel guide beam includes two girders, and the preceding terminal surface of two girders is the inclined plane, and the preceding terminal surface of two girders is located the coplanar and forms the mismatch, and in the use, this mismatch corresponds the welding with bottom plate, web, the roof of case roof beam, can reduce welding seam stress, improves welded structure's stability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a side view of the girder of the present invention.

In the figure: 1. a first connection section; 2. a second connection section; 3. a third connection section; 4. a fourth connection section; 5. a fifth connection section; 6. a sixth connecting section; 7. an N-shaped connecting frame; 8. an X-shaped connecting frame; 9. staggering; 10. an upper cross beam; 11. a lower cross beam; 12. vertical support; 13. and (4) bracing.

Detailed Description

The technical solution of the present invention is further described in detail through the following embodiments.

In the description of the present invention, it should 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. "mounted," "provided," "connected," and the like may be by means conventional in the art, such as: integral arrangement, clamping installation, welding connection, bonding connection, bolt connection and the like. The specific meaning of the above terms in the present invention can be understood in a specific case and suitable connection, arrangement or mounting means can be selected in the prior art for a person skilled in the art.

Referring to fig. 1-3, a steel guide beam for box-type steel structure bridge pushing comprises two main beams, wherein the two main beams are connected through a transverse truss, the two main beams are equal in length and parallel to each other, the front end surfaces of the two main beams are inclined planes, the front end surfaces of the two main beams are located on the same plane to form an offset 9, and the offset 9 is correspondingly connected with a bottom plate, a web plate and a top plate of the box beam.

This box steel construction bridge pushes away uses steel nose girder includes two girders, and the preceding terminal surface of two girders is the inclined plane, and the preceding terminal surface of two girders is located the formation stagger on the coplanar, and in the use, this stagger corresponds the welding with bottom plate, web, the roof of box girder, can reduce welding seam stress, improves welded structure's stability.

Preferably, the inclination angle of the front end face of the main beam is 65-70 degrees.

Preferably, the main beam is of a multi-section structure and comprises a first connecting section 1, a second connecting section 2, a third connecting section 3, a fourth connecting section 4, a fifth connecting section 5 and a sixth connecting section 6 which are sequentially connected from front to back, wherein the front end of the first connecting section 1 is used for connecting a box girder, the sixth connecting section 6 is used for overlapping temporary piers, specifically, in the forward moving process of the steel guide beam, the sixth connecting section overlaps the temporary pier in front so as to provide a stress point for jacking the steel guide beam and ensure the smooth jacking; in the transverse direction, the widths of the first connecting section 1, the fourth connecting section 4 and the fifth connecting section 5 are gradually reduced from front to back, and the second connecting section 2 and the sixth connecting section 6 are straight sections; in the longitudinal direction, the height of the fourth connecting section 4 gradually decreases from front to back. The sections can be connected by high-strength bolts.

Preferably, the main beam comprises an upper cross beam 10 and a lower cross beam 11, a plurality of supporting units are arranged between the upper cross beam 10 and the lower cross beam 11, each supporting unit comprises three vertical supports 12 and two inclined struts 13, the three vertical supports 12 are parallel to each other, and the vertical support 12 and the two inclined struts 13 in the middle form two right-angled triangles.

Preferably, the transverse truss comprises a plurality of N-shaped connecting frames 7 and an X-shaped connecting frame 8 which are sequentially connected from front to back, and the rear ends of the fifth connecting sections 5 of the two main beams are connected through the X-shaped connecting frame 8.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the technical solution of the present invention, the present invention should be covered by the technical solution of the present invention.

Claims

1. The utility model provides a box steel structure bridge top pushes away uses steel nose girder, includes two girders, connects its characterized in that through horizontal truss between two girders: two girder lengths equal and be parallel to each other, and the preceding terminal surface of two girders is the inclined plane, and the preceding terminal surface of two girders is located and forms the mismatch on the coplanar, and this mismatch corresponds with the bottom plate, web, the roof of case roof beam and is connected.

2. The box steel structure bridge top pushes away and uses steel nose girder of claim 1 characterized in that: the inclination angle of the front end surface of the main beam is 65-70 degrees.

3. The box steel structure bridge top pushes away and uses steel nose girder of claim 1 or 2, its characterized in that: the main beam is of a multi-section structure and comprises a first connecting section, a second connecting section, a third connecting section, a fourth connecting section, a fifth connecting section and a sixth connecting section which are sequentially connected from front to back, wherein the front end of the first connecting section is used for connecting the box girder, and the sixth connecting section is used for lapping the temporary pier; in the transverse direction, the widths of the first connecting section, the fourth connecting section and the fifth connecting section are gradually reduced from front to back, and the second connecting section and the sixth connecting section are straight sections; in the longitudinal direction, the height of the fourth connecting section is gradually reduced from front to back.

4. The box steel structure bridge top pushes away uses steel nose girder of claim 3 characterized in that: the girder includes entablature, bottom end rail, is provided with a plurality of supporting element between entablature, the bottom end rail, and every supporting element includes three vertical braces and two bracing, and three vertical braces is parallel to each other, and the vertical braces that is located the centre and two bracing form two right angled triangle.

5. The box steel structure bridge top pushes away uses steel nose girder of claim 3 characterized in that: the transverse truss comprises a plurality of N-shaped connecting frames and an X-shaped connecting frame which are sequentially connected from front to back, and the rear ends of the fifth connecting sections of the two main beams are connected through the X-shaped connecting frame.