CN218479046U

CN218479046U - Steel shell concrete bridge tower

Info

Publication number: CN218479046U
Application number: CN202222388902.XU
Authority: CN
Inventors: 康炜; 房帅平; 李伟; 张蕾; 张鹏举; 文强; 乔雷涛; 吴文华; 方桂芬; 闫岩; 罗畅; 李帅; 王冲冲
Original assignee: China Railway First Survey and Design Institute Group Ltd
Current assignee: China Railway First Survey and Design Institute Group Ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-02-14
Anticipated expiration: 2032-09-08

Abstract

The utility model relates to a box hat concrete bridge tower. The concrete bridge tower constructed in the plateau environment is easy to crack, and the field workload is large. The utility model discloses a box hat concrete bridge tower contains two pylons, the pylon comprises the vertical concatenation of a plurality of box hat concrete segment sections, the box hat concrete segment section includes the concrete in box hat and the box hat. The steel shell structure of the utility model is assembled and spliced in a factory, and is welded on site through integral hoisting, thus reducing the workload of plateau site operation, saving manpower and improving labor efficiency; the steel plate on the outer wall and the steel plate on the inner wall of the steel shell structure have a hoop effect on concrete, so that the compressive strength of the concrete is improved, and the structural size of the bridge tower is reduced. The outside steel sheet plays the guard action to the cavity concrete, reduces the concrete disease, prolongs the life of structure. Compare in the concrete bridge tower, the utility model discloses a cracking problem has been overcome to the steel-shelled concrete bridge tower, and application scope is wider, more is applicable to the plateau adverse circumstances.

Description

Steel shell concrete bridge tower

Technical Field

The utility model relates to a bridge structures building technical field, concretely relates to steel-shelled concrete bridge tower.

Background

The bridge tower is the main bearing structure of cable-stayed bridges and suspension bridges, and the form of the bridge tower which is commonly used in the existing construction practice is a concrete bridge tower. The Sichuan-Tibet railway is positioned in a western high-altitude area, adverse environmental conditions comprise strong solar radiation, sudden change of environmental temperature, strong wind and the like, and if a concrete bridge tower is adopted, on one hand, obvious temperature difference is generated between wall surfaces of the concrete bridge tower, so that the internal stress distribution of the structure becomes complicated, the surface of the bridge tower is easy to crack, the carbonization of concrete and the corrosion degree of internal steel bars are accelerated, and the service life durability of the structure is reduced; on the other hand, the concrete bridge tower needs to be bound with steel bars and poured with concrete on site, the workload is heavy, a large amount of manual operation is needed, the labor force is short in high-altitude areas, the heavy manual operation is very difficult, the efficiency is low, and the construction period can be prolonged.

Therefore, a bridge tower structure suitable for plateau environments needs to be designed, the problem that a concrete bridge tower in the plateau environments is prone to cracking is solved, the workload of plateau sites is reduced, and the construction quality and the construction progress are guaranteed.

Disclosure of Invention

The utility model aims at providing a steel-shelled concrete bridge tower to concrete bridge tower is easy to split, the big scheduling problem of site work volume in solving the plateau environment.

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

the utility model provides a steel-shelled concrete bridge tower, steel-shelled concrete bridge tower contains two pylons, the pylon comprises the vertical concatenation of a plurality of steel-shelled concrete festival sections, steel-shelled concrete festival section includes the concrete in steel-shelled and the steel-shelled.

Furthermore, the steel shell is annular and comprises two layers of steel plates of the outer periphery and the inner periphery, namely an outer wall steel plate and an inner wall steel plate, and a shell cavity is formed between the outer wall steel plate and the inner wall steel plate;

the concrete is poured into a shell cavity between the outer wall steel plate and the inner wall steel plate.

Further, the inner side of the outer wall steel plate is provided with an outer transverse stiffening rib vertical to the outer wall steel plate;

and the inner side of the inner wall steel plate is provided with an inner transverse stiffening rib vertical to the inner wall steel plate.

Furthermore, the outer transverse stiffening rib and the inner transverse stiffening rib are annular and transversely correspond to each other;

the outer transverse stiffening rib and the inner transverse stiffening rib are fixedly connected through connecting system angle steel.

Furthermore, vertical through holes are formed in the outer transverse stiffening rib and the inner transverse stiffening rib, and vertical reinforcing steel bars penetrate into the through holes.

Furthermore, outer vertical stiffening ribs perpendicular to the outer wall steel plates are arranged on the inner sides of the outer wall steel plates;

and the inner side of the inner wall steel plate is provided with an inner vertical stiffening rib which is vertical to the inner wall steel plate.

Furthermore, the steel shell concrete segments are vertically spliced, and the adjacent steel shells are welded to splice the steel shell concrete segments into the tower column.

Furthermore, a bridge tower cross beam is arranged between the two tower columns, and the bridge tower cross beam is of a box-shaped section steel structure and is connected with the tower columns through welding.

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

the utility model provides a steel-shelled concrete bridge tower, its steel-shelled structure assembles the concatenation in the factory and accomplishes, and the welding has reduced plateau field operation's work load through whole hoist and mount on-the-spot, has saved the manpower to labor efficiency has been improved.

In addition, the outer wall steel plate and the inner wall steel plate of the steel shell structure have a hoop effect on concrete, so that the compressive strength of the concrete is improved, and the structural size of the bridge tower is reduced. The outside steel sheet plays the guard action to the cavity concrete, reduces the concrete disease, prolongs the life of structure. Compare in the concrete bridge tower, the utility model discloses a steel-shelled concrete bridge tower has overcome the fracture problem, and application scope is wider, more is applicable to plateau adverse circumstances.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.

Fig. 1 is an elevation view of a steel shell concrete bridge tower.

Fig. 2 is a horizontal cross-section of a steel shell concrete segment.

Fig. 3 is a vertical cross-sectional view of a tower.

The labels in the figure are:

1-steel shell concrete segment, 2-outer wall steel plate, 3-inner wall steel plate, 41-outer transverse stiffening rib, 42-inner transverse stiffening rib, 51-outer vertical stiffening rib, 52-inner vertical stiffening rib, 6-connection system angle steel, 7-reinforcing steel bar, 8-concrete, 9-tower column and 10-bridge tower beam.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the description of this patent, it is to be understood that the terms "vertical," "lateral," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise expressly specified or limited, the terms "connected," "disposed," and the like are to be construed broadly and can for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

In the embodiment, a direction in a horizontal plane is defined as a horizontal direction, a direction perpendicular to the horizontal plane is defined as a vertical direction, and in the steel shell, a space between the outer wall steel plate 2 and the inner wall steel plate 3 is defined as an inner side, and the other portions are defined as outer sides.

Referring to fig. 1, the present embodiment provides a steel-shell concrete bridge tower, which is obviously different from the existing concrete bridge tower, the steel-shell concrete bridge tower includes two towers 9, the tower 9 is formed by vertically splicing a plurality of steel-shell concrete segments 1, and the steel-shell concrete segments 1 include a steel shell and concrete 8 in the steel shell.

As shown in fig. 2, the steel shell is annular and comprises two layers of steel plates, namely an outer wall steel plate 2 and an inner wall steel plate 3, on the outer periphery and on the inner periphery, and a shell cavity is formed between the outer wall steel plate 2 and the inner wall steel plate 3. The steel shell in fig. 2 is in a square ring shape, and in other embodiments, the steel shell can be designed into other shapes according to actual requirements. Concrete 8 is poured in the shell cavity between the outer wall steel plate 2 and the inner wall steel plate 3 to form a steel shell concrete structure.

A reinforcing structure is arranged in the steel shell concrete segment 1. As shown in fig. 2 and 3, the inner side of the outer wall steel plate 2 is provided with an outer transverse stiffening rib 41 perpendicular to the outer wall steel plate 2, and is fixed by welding; the inner side of the inner wall steel plate 3 is provided with an inner transverse stiffening rib 42 which is vertical to the inner wall steel plate 3 and is fixed by welding. The outer transverse stiffening rib 41 and the inner transverse stiffening rib 42 are annular and transversely correspond to each other, the outer transverse stiffening rib 41 and the inner transverse stiffening rib 42 are fixedly connected through connecting system angle steel 6, and the connecting system angle steel 6 is radially arranged and connected in a welding mode. The outer transverse stiffener 41 and the inner transverse stiffener 42 are arranged together 50cm in the direction of the height of the bridge tower. In addition, the inner side of the outer wall steel plate 2 is provided with an outer vertical stiffening rib 51 perpendicular to the outer wall steel plate 2, and the inner side of the inner wall steel plate 3 is provided with an inner vertical stiffening rib 52 perpendicular to the inner wall steel plate 3, so that the rigidity and stability of the steel shell are further enhanced.

As shown in fig. 2, vertical through holes are formed in the outer transverse stiffening rib 41 and the inner transverse stiffening rib 42, vertical steel bars penetrate through the through holes, and the concrete 8 is poured together. In some embodiments, the outer transverse stiffener 41 and the inner transverse stiffener 42 are further provided with an outer vertical stiffener 51 and an inner vertical stiffener 52, respectively, for passing through the outer vertical stiffener 51 and the inner vertical stiffener 52.

The steel shell concrete segments 1 are vertically spliced, and the steel shell concrete segments 1 are spliced into the tower column 9 by welding adjacent steel shells. The vertical height of each steel shell concrete segment 1 may be 5.0m.

A bridge tower cross beam 10 is arranged between the two tower columns 9, the bridge tower cross beam 10 is of a box-shaped section steel structure and is connected with the tower columns 9 through welding, as shown in figure 1, the bridge tower cross beam 10 can be arranged at the top and the middle between the two tower columns 9 according to actual engineering requirements, and the number of the bridge tower cross beams can also be increased according to requirements.

The utility model discloses a work progress does:

1. the outer vertical stiffeners 51 and the outer transverse stiffeners 41 are welded to the outer wall steel plates 2.

2. The inner vertical stiffeners 52 and the inner transverse stiffeners 42 are welded to the inner wall steel plate 3.

3. The outer wall steel plate 2 is placed on the outer side of the inner wall steel plate 3 to form a steel shell structure similar to a double-wall steel cofferdam, and the connecting system angle steel 6 is welded with the transverse stiffening ribs on the outer wall steel plate 2 and the inner wall steel plate 3.

4. And (5) passing the reinforcing steel bars 7 through the transverse stiffening ribs to form a steel shell structure.

5. And hoisting the steel shell structure to the bridge tower, and pouring concrete in the cavity to form a steel shell concrete segment.

6. And repeating the above 5 steps, and accumulating the steel shell concrete segments to form the whole bridge tower through vertical welding.

7. And bridge tower beams are arranged between the bridge towers.

The steel shell concrete bridge tower of the utility model is processed into a steel shell structure in a factory, transported to a construction site for hoisting and splicing, and then poured with internal concrete, the workload of site operation is reduced, the labor is saved, the rapid construction can be realized, and the steel shell concrete bridge tower is particularly suitable for the plateau environment with difficult manual operation; meanwhile, the outer side steel plate and the inner side steel plate have the protection effect and the hoop effect on concrete, concrete diseases are reduced, the service life of a concrete structure is prolonged, the compressive strength of the concrete is improved, and the structural size of the bridge tower is reduced.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims

1. A steel-shell concrete bridge tower is characterized in that:

the steel shell concrete bridge tower comprises two tower columns (9), wherein each tower column (9) is formed by vertically splicing a plurality of steel shell concrete sections (1), and each steel shell concrete section (1) comprises a steel shell and concrete (8) in the steel shell.

2. A steel shell concrete bridge tower according to claim 1, wherein:

the steel shell is annular and comprises two layers of steel plates of the outer periphery and the inner periphery, namely an outer wall steel plate (2) and an inner wall steel plate (3), and a shell cavity is formed between the outer wall steel plate (2) and the inner wall steel plate (3);

and the concrete (8) is poured in a shell cavity between the outer wall steel plate (2) and the inner wall steel plate (3).

3. A steel shell concrete bridge tower according to claim 2, wherein:

the inner side of the outer wall steel plate (2) is provided with an outer transverse stiffening rib (41) which is vertical to the outer wall steel plate (2);

and the inner side of the inner wall steel plate (3) is provided with an inner transverse stiffening rib (42) which is vertical to the inner wall steel plate (3).

4. A steel shell concrete bridge tower according to claim 3, wherein:

the outer transverse stiffening rib (41) and the inner transverse stiffening rib (42) are annular and transversely correspond to each other;

the outer transverse stiffening rib (41) and the inner transverse stiffening rib (42) are fixedly connected through a connecting system angle steel (6).

5. A steel shell concrete bridge tower according to claim 4, wherein:

vertical through holes are formed in the outer transverse stiffening rib (41) and the inner transverse stiffening rib (42), and vertical steel bars penetrate through the through holes.

6. A steel shell concrete bridge tower according to claim 5, wherein:

the inner side of the outer wall steel plate (2) is provided with an outer vertical stiffening rib (51) which is vertical to the outer wall steel plate (2);

and inner vertical stiffening ribs (52) which are vertical to the inner wall steel plates (3) are arranged on the inner sides of the inner wall steel plates (3).

7. A steel shell concrete bridge tower according to claim 6, wherein:

the steel shell concrete segments (1) are vertically spliced, and the adjacent steel shells are welded to splice the steel shell concrete segments (1) into the tower column (9).

8. A steel shell concrete bridge tower according to claim 7, wherein:

a bridge tower cross beam (10) is arranged between the two tower columns (9), and the bridge tower cross beam (10) is of a box-shaped section steel structure and is connected with the tower columns (9) through welding.