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Octahedral tank type steel purlin arc bridge boom

A technology for section steel and arch bridges, applied in the field of suspension rods of eight-sided box-section steel truss arch bridges, can solve problems such as wind-induced vibration of large-span bridges, and achieve the effect of high rigidity and good aerodynamic shape

Inactive Publication Date: 2009-12-23
ZHONGTIE MAJOR BRIDGE RECONNAISSANCE & DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Suspenders are an important part of steel truss arch bridges, but wind-induced vibration problems often occur in long-span bridges

Method used

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  • Octahedral tank type steel purlin arc bridge boom
  • Octahedral tank type steel purlin arc bridge boom
  • Octahedral tank type steel purlin arc bridge boom

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Embodiment Construction

[0010] refer to figure 1 , 2 , 3, the present invention is by flat octahedral box-shaped structure, is connected by oblique angle plate 3 between web 2, wing plate 1, and there is diaphragm 5 in it, in two corresponding webs 2, wing plate 1 is provided with a stiffener 4 in the middle, the lower end is connected to the deck gusset plate 9 and the web joint plate 10 through high-strength bolts 6 and the main and side splice plates 7 and 8 respectively, and the upper end is connected to the arch chord gusset plate 11 through high-strength bolts 6 .

[0011] In the middle of the present invention, there are stiffening ribs for transverse reinforcement and transverse diaphragms for vertical reinforcement. By adopting the invention, the suspenders have high rigidity and better aerodynamic shape, so the wind vibration problem of the suspenders of long-span and super-long-span steel truss arch bridges can be effectively solved.

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Abstract

An octahedral tank type steel purlin arc bridge boom relates to a structure that can solves the wind vibration problem of a long-span or extra long-span steel purlin arc bridge boom. The invention is in flat octahedral tank type structure and is formed by welding of a web plate, a wing plate and a slant angle plate; the boom is internally provided with a diaphragm plate, thus realizing vertical strengthening action; a stiffening rib is arranged between the web plate and the wing plate which are in correspondence, thus realizing transverse strengthening action; and the lower end is respectively connected with a bridge floor gusset plate and a web terminal plate by a high strength bolt and a splice plate while the upper end is connected with an arch chord gusset plate by a high strength bolt. The boom of a steel purlin arc bridge adopts the octahedral tank type boom, the rigidity of the boom is high, and pneumatic appearance is better, thus effectively solving the wind vibration problem of the long-span and extra long-span steel purlin arc bridge boom. The invention is tried out on Nanjing Dashengguan Yangtze River Bridge and has favourable effect.

Description

technical field [0001] The invention relates to a structure capable of solving the problem of wind-induced vibration of a suspender of a steel truss arch bridge with a large span or an extra large span. Background technique [0002] Suspenders are an important part of steel truss arch bridges, but wind-induced vibration problems often occur in long-span bridges. The steel truss arch bridges that have been built in my country, such as Jiujiang Yangtze River Bridge (main span 180+216+180m), Wanzhou Yangtze River Bridge (168+360+168m), etc., have H-shaped suspenders to prevent low wind speed For vortex vibration, measures are taken to increase the ventilation rate of the boom or install dampers. With the further development of my country's railways and high-speed railways, the span of railway steel truss arch bridges is getting larger and larger, and the length of the suspenders is increasing and the stiffness is decreasing. It is difficult to solve multi-directional wind-indu...

Claims

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Application Information

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IPC IPC(8): E01D19/00E01D4/00E01D101/30
Inventor 易伦雄肖海珠秦顺全高宗余张敏刘承虞胡辉跃张成东
Owner ZHONGTIE MAJOR BRIDGE RECONNAISSANCE & DESIGN INST
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