Windproof anti-dazzle barrier

Abstract

The invention discloses a windproof type anti-dazzle barrier, and relates to the technical field of bridge barriers, the windproof type anti-dazzle barrier comprises an anti-collision wall, the top of the anti-collision wall is provided with a plurality of H-shaped steel stand columns, and the H-shaped steel stand columns are arranged at equal intervals in the extending direction of the anti-collision wall; a solid-web sound absorption barrier set and a metal anti-throwing net which are tightly connected are inserted between every two adjacent H-shaped steel stand columns in the height direction, the height of the solid-web sound absorption barrier set ranges from 1350 mm to 1370 mm, the height of the metal anti-throwing net is 1480 mm, and the aperture ratio of the metal anti-throwing net is 70%. By limiting and optimizing the specific structure sizes of the bottom solid-web structure and the upper grid structure, it is effectively ensured that no remarkable vortex shedding is generated when the windproof anti-dazzle barrier is blown by wind, and then the aerodynamic performance of a bridge is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge barriers, and in particular to a windproof and anti-glare barrier. Background Art

[0002] The design of large-span bridges needs to consider the wind-resistant stability of the bridge. In order to ensure the wind-resistant safety and comfort of the bridge, the wind-resistant characteristics of the bridge must be evaluated through wind tunnel tests, wind-induced vibration analysis and other means to test its wind-resistant performance and propose effective and economical countermeasures for possible wind-resistant problems.

[0003] Through the segment model wind tunnel test, it was found that the use of conventional full-solid anti-glare barriers on long-span bridges will weaken the aerodynamic performance of the bridge. Therefore, how to provide a windproof anti-glare barrier to ensure the aerodynamic performance of the bridge section has become a difficult problem that technicians in this field need to solve urgently. Summary of the invention

[0004] The purpose of the present invention is to provide a windproof anti-glare barrier to solve the problem that the existing full-solid belly anti-glare barrier will cause the aerodynamic performance of the bridge to be weakened.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention discloses a windproof and glare-proof barrier, comprising a crash barrier, a plurality of H-shaped steel columns are arranged on the top of the crash barrier, and the plurality of H-shaped steel columns are arranged at equal intervals along the extension direction of the crash barrier; a tightly connected solid-belly sound-absorbing barrier group and a metal anti-throwing net are inserted between two adjacent H-shaped steel columns along the height direction, the height of the solid-belly sound-absorbing barrier group is 1350mm~1370mm, the height of the metal anti-throwing net is 1480mm, and the opening rate of the metal anti-throwing net is 70%.

[0006] Preferably, a plurality of U-shaped anchor bolts are pre-embedded at the upper end of the crash barrier, a base plate is welded to the bottom end of the H-shaped steel column, the base plate and the H-shaped steel column are inverted T-shaped structure, and the base plate is fixedly connected to the crash barrier through the U-shaped anchor bolts; two U-shaped anchor bolts are connected to each base plate.

[0007] Preferably, four stiffening plates are symmetrically arranged between the H-shaped steel column and the base plate.

[0008] Preferably, the solid-belly sound-absorbing barrier group includes three metal sound-absorbing panels spliced ​​together from top to bottom, and the length of the metal sound-absorbing panels is 1960 mm, the width is 450 mm, and the thickness is 120 mm.

[0009] Preferably, the metal anti-throwing net is made of steel bars with a diameter of 6 mm, the mesh size of the metal anti-throwing net is 50 mm×50 mm, and the metal anti-throwing net and the topmost metal sound-absorbing panel are spliced ​​together.

[0010] Preferably, the metal anti-throwing net and the metal sound absorbing panel, and the three metal sound absorbing panels are connected in series via a grounding wire.

[0011] Preferably, the joints between the H-shaped steel column, the metal sound absorbing panel and the metal anti-throwing net are provided with shock-absorbing sealing rubber strips, and the lower edge of the metal sound absorbing panel at the bottom is wrapped with a U-shaped rubber strip.

[0012] Preferably, a U-shaped gusset plate for limiting the metal anti-throw net is bolted between the tops of two adjacent H-shaped steel columns.

[0013] Preferably, the distance between two adjacent H-shaped steel columns is 2000 mm.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are: 1) The present invention discloses a windproof anti-glare barrier, including a crash wall, the top of which is provided with a plurality of H-shaped steel columns, which are arranged at equal intervals along the extension direction of the crash wall; a closely connected solid-belly sound-absorbing barrier group and a metal anti-throwing net are inserted between two adjacent H-shaped steel columns along the height direction, the height of the solid-belly sound-absorbing barrier group is 1350mm-1370mm, the height of the metal anti-throwing net is 1480mm, and the opening rate of the metal anti-throwing net is 70%. The present invention effectively ensures that the windproof anti-glare barrier provided by the present invention will not produce significant vortex shedding when blown by the wind, thereby effectively improving the aerodynamic performance of the bridge.

[0015] 2) The H-shaped steel column and the crash wall of the bridge are connected by U-shaped anchor bolts, which has good connection stability.

[0016] 3) The metal sound-absorbing panels and metal anti-throw nets are connected to the H-shaped steel columns by plugging, which is convenient for construction and subsequent maintenance.

[0017] 4) A shock-absorbing sealing rubber strip is provided at the joint between the metal sound-absorbing panel and the H-shaped steel column, and a U-shaped rubber strip is wrapped at the lower edge of the bottom metal sound-absorbing panel, which can effectively prevent the metal sound-absorbing panel from shaking and improve the shielding performance of the metal sound-absorbing panel.

[0018] 5) A stiffening plate is welded between the base plate and the H-shaped steel column, which can effectively improve the structural strength of the H-shaped steel column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 This is a front view of the windproof anti-glare barrier of the present invention; Figure 2 It is a partial cross-sectional view of the metal sound absorbing plate and the metal anti-throwing net of the present invention.

[0021] Explanation of the accompanying reference numerals: 1. Anti-collision wall; 2. H-shaped steel column; 3. U-shaped anchor bolt; 4. Bottom plate; 5. Stiffening plate; 6. Metal sound-absorbing panel; 7. Metal anti-throwing net; 8. U-shaped buckle plate; 9. Grounding wire. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] like Figure 1-2 As shown, a windproof and anti-glare barrier comprises a crash barrier 1, a plurality of H-shaped steel columns 2 are arranged on the top of the crash barrier 1, and the plurality of H-shaped steel columns 2 are arranged at equal intervals along the extension direction of the crash barrier 1; a tightly connected solid-belly sound-absorbing barrier group and a metal anti-throwing net 7 are inserted between two adjacent H-shaped steel columns 2 along the height direction, the height of the solid-belly sound-absorbing barrier group is 1350mm~1370mm, the height of the metal anti-throwing net 7 is 1480mm, and the opening rate of the metal anti-throwing net 7 is 70%.

[0024] Specifically, a plurality of U-shaped anchor bolts 3 are pre-buried at the upper end of the crash barrier 1, a base plate 4 is welded to the bottom end of the H-shaped steel column 2, the base plate 4 and the H-shaped steel column 2 are inverted T-shaped structure, and the base plate 4 is fixedly connected to the crash barrier 1 through the U-shaped anchor bolts 3; each base plate 4 is connected to two U-shaped anchor bolts 3.

[0025] Specifically, four stiffening plates 5 are symmetrically arranged between the H-shaped steel column 2 and the bottom plate 4 .

[0026] Specifically, the solid-belly sound-absorbing barrier group includes three metal sound-absorbing panels 6 spliced ​​together from top to bottom, and the metal sound-absorbing panels 6 have a length of 1960 mm, a width of 450 mm, and a thickness of 120 mm.

[0027] Specifically, the metal anti-throwing net 7 is made of steel bars with a diameter of 6 mm, the mesh size of the metal anti-throwing net 7 is 50 mm×50 mm, and the metal anti-throwing net 7 and the top metal sound absorbing board 6 are spliced ​​together.

[0028] During specific implementation, for different bridge sections, the shape of the opening can be appropriately adjusted according to aesthetic requirements while ensuring the size of the opening.

[0029] Specifically, the metal anti-throwing net 7 and the metal sound absorbing plate 6 as well as the three metal sound absorbing plates 6 are connected in series through a grounding wire 9 .

[0030] Secondly, the grounding wire 9 is made of copper wire and the bottom end of the grounding wire 9 is connected to the U-shaped anchor bolt 3 .

[0031] Specifically, the joints between the H-shaped steel column 2, the metal sound absorbing plate 6 and the metal anti-throwing net 7 are provided with shock-absorbing sealing rubber strips, and the lower edge of the metal sound absorbing plate 6 at the bottom is wrapped with a U-shaped rubber strip.

[0032] Specifically, a U-shaped gusset plate 8 for limiting the metal anti-throwing net 7 is bolted between the tops of two adjacent H-shaped steel columns 2 .

[0033] The length of the U-shaped gusset plate 8 is 2000 mm, the width is 150 mm, and the thickness is 3 mm.

[0034] Specifically, the distance between two adjacent H-shaped steel columns 2 is 2000 mm.

[0035] Specifically, the windproof anti-glare barrier provided by the present invention is preferably applicable to a large-span cable-stayed bridge, wherein the large-span cable-stayed bridge is a steel box girder cable-stayed bridge for both road and rail with a main span of not less than 522m, a height from the ground of not less than 100m, and a bridge width of not less than 63.9m. It was verified by the XNJD-3 wind tunnel test that under the same wind conditions, the windproof anti-glare barrier provided by the present invention significantly reduces the vortex shedding phenomenon compared to the full-solid belly anti-glare barrier.

[0036] The installation process of the present invention is as follows: First, when a new steel box girder cable-stayed bridge for both road and rail is constructed, a crash barrier 1 is set up along the extension direction of the bridge, and U-shaped anchor bolts 3 are pre-buried at intervals in the crash barrier 1. Secondly, the H-shaped steel column 2 is fixed by the U-shaped anchor bolts and a stiffening plate 5 is welded between the H-shaped steel column 2 and the bottom plate 4. Then, three metal sound absorbing panels 6 and a metal anti-throwing net 7 are inserted in sequence between two adjacent H-shaped steel columns, and the three metal sound absorbing panels 6 and the metal anti-throwing net 7 are connected in series by a grounding wire 9. Finally, a U-shaped buckle plate 8 is connected between the tops of two adjacent H-shaped steel columns.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A windproof anti-glare barrier, characterized in that: The invention comprises a crash barrier (1), wherein a plurality of H-shaped steel columns (2) are arranged on the top of the crash barrier (1), and the plurality of H-shaped steel columns (2) are arranged at equal intervals along the extension direction of the crash barrier (1); a solid-belly sound-absorbing barrier group and a metal anti-throwing net (7) are plugged in between two adjacent H-shaped steel columns (2) along the height direction, wherein the solid-belly sound-absorbing barrier group has a height of 1350 mm to 1370 mm, the metal anti-throwing net (7) has a height of 1480 mm, and the opening rate of the metal anti-throwing net (7) is 70%.

2. The windproof anti-glare barrier according to claim 1, characterized in that: A plurality of U-shaped anchor bolts (3) are pre-buried at the upper end of the crash barrier (1); a bottom plate (4) is welded to the bottom end of the H-shaped steel column (2); the bottom plate (4) and the H-shaped steel column (2) are in an inverted T-shaped structure; the bottom plate (4) is fixedly connected to the crash barrier (1) via the U-shaped anchor bolts (3); and each bottom plate (4) is connected to two of the U-shaped anchor bolts (3).

3. The windproof anti-glare barrier according to claim 2, characterized in that: Four stiffening plates (5) are symmetrically arranged between the H-shaped steel column (2) and the bottom plate (4).

4. The windproof anti-glare barrier according to claim 1, characterized in that: The solid-belly sound-absorbing barrier group comprises three metal sound-absorbing panels (6) that are spliced ​​together in sequence from top to bottom. The metal sound-absorbing panels (6) have a length of 1960 mm, a width of 450 mm, and a thickness of 120 mm.

5. The windproof anti-glare barrier according to claim 4, characterized in that: The metal anti-throwing net (7) is made of steel bars with a diameter of 6 mm. The mesh size of the metal anti-throwing net (7) is 50 mm×50 mm. The metal anti-throwing net (7) and the top metal sound absorbing plate (6) are spliced ​​together.

6. The windproof anti-glare barrier according to claim 4, characterized in that: The metal anti-throwing net (7) and the metal sound absorbing plate (6), as well as the three metal sound absorbing plates (6), are connected in series via a grounding wire (9).

7. The windproof anti-glare barrier according to claim 4, characterized in that: A shock-absorbing sealing rubber strip is provided at the joint between the H-shaped steel column (2), the metal sound-absorbing plate (6) and the metal anti-throwing net (7), and a U-shaped rubber strip is wrapped around the lower edge of the metal sound-absorbing plate (6) at the bottom.

8. The windproof anti-glare barrier according to claim 1, characterized in that: A U-shaped gusset plate (8) for limiting the position of the metal anti-throw net (7) is bolted between the tops of two adjacent H-shaped steel columns (2).

9. The windproof anti-glare barrier according to claim 1, characterized in that: The distance between two adjacent H-shaped steel columns (2) is 2000 mm.

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