阅读说明：本技术 一种三拱肋梁拱组合体系 (Three-arch rib beam arch combination system ) 是由 童金虎 何刚 朱力琦 杨建冬 李建忠 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种三拱肋梁拱组合体系,包括钢箱梁本体,钢箱梁本体顶端中部的正上方设置有中拱肋,中拱肋的两侧均设置有边拱肋,中拱肋与边拱肋之间通过若干个连杆固定连接,边拱肋与钢箱梁本体之间设置有V撑,V撑顶端的两侧分别与两个边拱肋固定连接,V撑的底端与钢箱梁本体固定连接,中拱肋与钢箱梁本体的中跨之间设置有直吊杆,直吊杆的两端分别与钢箱梁本体和中拱肋固定连接,边拱肋与钢箱梁本体的中跨之间设置有斜吊杆。本发明一种三拱肋梁拱组合体系,通过在钢箱梁本体顶端设置中拱肋、边拱肋等一些基础设施,不需要等待钢箱梁本体进行安装完成后在进行基础设施的建设,能够大大缩短工程周期,加快项目的进度。(The invention discloses a three-arch rib beam-arch combination system which comprises a steel box beam body, wherein a middle arch rib is arranged right above the middle part of the top end of the steel box beam body, side arch ribs are arranged on two sides of the middle arch rib, the middle arch rib and the side arch ribs are fixedly connected through a plurality of connecting rods, a V-shaped support is arranged between the side arch ribs and the steel box beam body, two sides of the top end of the V-shaped support are fixedly connected with the two side arch ribs respectively, the bottom end of the V-shaped support is fixedly connected with the steel box beam body, a straight suspender is arranged between the middle arch rib and the midspan of the steel box beam body, two ends of the straight suspender are fixedly connected with the steel box beam body and the middle arch rib respectively, and an inclined suspender is arranged between the side arch ribs and the midspan of. According to the three-arch rib beam-arch combination system, the middle arch rib, the side arch rib and other infrastructures are arranged at the top end of the steel box girder body, so that the construction of the infrastructures is not required after the steel box girder body is installed, the engineering period can be greatly shortened, and the project progress is accelerated.)

1. A three-arch rib beam-arch combination system comprises a steel box beam body (1) and is characterized in that a middle arch rib (2) is arranged right above the middle of the top end of the steel box beam body (1), side arch ribs (3) are arranged on two sides of each middle arch rib (2), the middle arch ribs (2) are fixedly connected with the side arch ribs (3) through a plurality of connecting rods (4), a V-shaped support (5) is arranged between each side arch rib (3) and the steel box beam body (1), two sides of the top end of each V-shaped support (5) are fixedly connected with the two side arch ribs (3) respectively, the bottom end of each V-shaped support (5) is fixedly connected with the steel box beam body (1), a straight suspender (6) is arranged between each middle arch rib (2) and the steel box beam body (1), two ends of each straight suspender (6) are fixedly connected with the steel box beam body (1) and each middle arch rib (2) respectively, an oblique suspender (7) is arranged between the side arch rib (3) and the midspan of the steel box girder body (1), and two ends of the oblique suspender (7) are respectively fixedly connected with the steel box girder body (1) and the side arch rib (3).

2. A three-arch rib beam-arch combination system according to claim 1, wherein the middle arch rib (2) adopts a regular hexagon steel box section, the material of the middle arch rib (2) is Q390qD, and the arch axis of the middle arch rib (2) adopts a quadratic parabola, the span is 120m, the rise is 30m, and the rise-span ratio is 1/4.

3. A three-arch beam-arch combination system according to claim 1, wherein the side arch (3) is made of regular hexagonal steel in cross section, the material of the side arch (3) is Q345qD, the plane of the side arch (3) is 78 ° from the horizontal plane, and the arch axis of the side arch (3) is composed of 3 segments of circular curves, the span is 220m, the rise is 23.5m, and the sagittal-to-transverse ratio is 1/9.362.

4. A three-arch-rib beam-arch combination according to claim 1, wherein the tie-rods (4) have a rectangular cross-section and the dimensions of the tie-rods (4) are: 600X 20/600X 500X 20/600X 600X 30 mm.

5. A three-arch rib beam-arch combination system according to claim 1, wherein the V-brace (5) has a rectangular cross section, and the dimensions of the V-brace (5) are: 500X 400X 20 mm.

6. The three-arch rib beam-arch combination system according to claim 1, wherein the number of the straight suspenders (6) is 36, the 36 straight suspenders (6) are divided into 18 parts, each part is provided with two straight suspenders (6) at equal intervals along the longitudinal direction, and the straight suspenders (6) adopt finished cables consisting of 73 Φ 7 high-strength galvanized steel wires.

7. The three-arch rib beam-arch combination system according to claim 1, wherein the oblique suspension rods (7) are arranged on the inner side of the sidewalk on the steel box girder body (1), the distance between the oblique suspension rods (7) in the longitudinal bridge direction is 6m, and the oblique suspension rods (7) adopt finished cables consisting of 37 phi 5 high-strength galvanized steel wires.

Technical Field

The invention relates to the technical field of steel box girder bridges, in particular to a three-arch rib girder arch combination system.

Background

The steel box girder is also called steel plate box girder, and is a common structural form of a large-span bridge. The steel box girder is generally used on bridges with large span, is called a steel box girder because the shape is like a box, in a large-span cable support bridge, the span of the steel box girder reaches hundreds of meters and thousands of meters, and is generally manufactured and installed by being divided into a plurality of beam sections, the cross section of the steel box girder has the characteristics of wide width and flat shape, and the height-width ratio reaches 1: about 10.

At present, the existing steel box girder is only used for being installed to form a bridge deck, and some basic facilities at the top end of the bridge deck can be constructed continuously after the bridge deck is assembled, so that the engineering period is longer. Therefore, we improve the method and propose a three-arch rib beam arch combination system.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a three-arch rib beam arch combination system.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention discloses a three-arch-rib beam-arch combination system which comprises a steel box girder body, wherein a middle arch rib is arranged right above the middle part of the top end of the steel box girder body, side arch ribs are arranged on two sides of the middle arch rib, the middle arch rib and the side arch ribs are fixedly connected through a plurality of connecting rods, a V-shaped brace is arranged between the side arch ribs and the steel box girder body, two sides of the top end of the V-shaped brace are fixedly connected with the two side arch ribs respectively, the bottom end of the V-shaped brace is fixedly connected with the steel box girder body, a straight suspender is arranged between the middle arch rib and the midspan of the steel box girder body, two ends of the straight suspender are fixedly connected with the steel box girder body and the middle arch rib respectively, an inclined suspender is arranged between the side arch rib and the midspan of the steel box girder body, and two ends of the inclined suspender are fixedly connected with the steel box girder body and the side arch.

As a preferable technical scheme of the invention, the middle arch rib adopts a regular hexagon steel box section, the material of the middle arch rib is Q390qD, the arch axis of the middle arch rib adopts a quadratic parabola, the span is 120m, the rise is 30m, and the rise-span ratio is 1/4.

As a preferable technical scheme of the invention, the side arch rib adopts a regular hexagon steel section, the material of the side arch rib is Q345qD, the included angle between the plane of the side arch rib and the horizontal plane is 78 degrees, the arch axis of the side arch rib consists of 3 sections of circular curves, the span is 220m, the rise is 23.5m, and the rise-span ratio is 1/9.362.

As a preferred technical solution of the present invention, the connecting rod has a rectangular cross section, and the size of the connecting rod is: 600X 20/600X 500X 20/600X 600X 30 mm.

As a preferred technical solution of the present invention, the V-brace has a rectangular cross section, and the dimensions of the V-brace are as follows: 500X 400X 20 mm.

As a preferable technical scheme of the invention, the number of the straight suspenders is 36, the 36 straight suspenders are divided into 18 parts, each part is provided with two straight suspenders at equal intervals along the longitudinal direction, and the straight suspenders adopt finished cables consisting of 73 phi 7 high-strength galvanized steel wires.

As a preferred technical scheme of the invention, the inclined suspender is arranged on the inner side of a sidewalk on the steel box girder body 1, the distance between the inclined suspender and the longitudinal bridge direction is 6m, and the inclined suspender adopts a finished cable consisting of 37 phi 5 high-strength galvanized steel wires.

The invention has the beneficial effects that: this kind of three arch rib roof beam arch combination system through setting up some infrastructures such as well arch rib, limit arch rib at steel box girder body top, need not wait for the steel box girder body and install the construction of carrying out infrastructure after accomplishing, can shorten engineering cycle greatly for the progress of project.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a three-arch rib beam-arch combination system of the present invention;

FIG. 2 is a schematic structural view of the front face of a three-arch rib beam-arch combination system of the present invention;

fig. 3 is a top view of a three-arch rib beam-arch composite system of the present invention.

Fig. 4 is a perspective view of a three-arch rib beam-arch composite system of the present invention.

In the figure: 1. a steel box girder body; 2. a mid-arch rib; 3. a side arch rib; 4. a connecting rod; 5. v support; 6. a straight boom; 7. an inclined suspender.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.