A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pneumatic structure for improving flutter critical wind speed of truss girder
The invention discloses a pneumatic structure for improving the flutter critical wind speed of a truss girder, the device is composed of groove sealing grids and a central stabilizing plate, the groove sealing grids are continuously arranged in a central separation zone anti-collision guardrail along the longitudinal direction of the section of a main truss, and the arrangement mode is continuous arrangement along the longitudinal direction of a full bridge; the central stabilizing plate is vertically connected to the lower surface of the upper parallel cross beam of the main truss, the central line of the central stabilizing plate coincides with the central line of the bridge, and the central stabilizing plate is longitudinally and continuously arranged along the section of the full-bridge main truss and is as long as the main span of the bridge; according to the device, the air streaming flow field characteristics of the bottom and the inner side of the slotted truss girder suspension bridge can be changed, generation of vortexes is restrained or weakened, therefore, the flutter critical wind speed of the slotted truss girder suspension bridge is increased, the safety of the bridge is improved, the service life of the bridge is prolonged, and the device is obvious in control effect, simple in structure, convenient to install and high in economical performance.
本发明公开了一种提高桁架主梁颤振临界风速的气动构造，该装置由封槽格栅和中央稳定板组成，封槽格栅沿主桁架断面纵向连续布置在中央分隔带防撞护栏内，布置方式为沿全桥纵向连续布置；中央稳定板垂直连接在主桁架上平联横梁下表面，其中心线与桥梁中心线重合，中央稳定板沿全桥主桁架截面纵向连续布置，长度与桥梁主跨长度相同；本发明可以改变开槽桁架梁悬索桥底部和内侧的空气绕流流场特性，抑制或削弱漩涡的产生，从而提高开槽桁架梁悬索桥颤振临界风速，提高桥梁的安全性和延长桥梁的使用寿命，该装置控制效果明显、结构简单、安装方便且经济型性高。
Pneumatic structure for improving flutter critical wind speed of truss girder
The invention discloses a pneumatic structure for improving the flutter critical wind speed of a truss girder, the device is composed of groove sealing grids and a central stabilizing plate, the groove sealing grids are continuously arranged in a central separation zone anti-collision guardrail along the longitudinal direction of the section of a main truss, and the arrangement mode is continuous arrangement along the longitudinal direction of a full bridge; the central stabilizing plate is vertically connected to the lower surface of the upper parallel cross beam of the main truss, the central line of the central stabilizing plate coincides with the central line of the bridge, and the central stabilizing plate is longitudinally and continuously arranged along the section of the full-bridge main truss and is as long as the main span of the bridge; according to the device, the air streaming flow field characteristics of the bottom and the inner side of the slotted truss girder suspension bridge can be changed, generation of vortexes is restrained or weakened, therefore, the flutter critical wind speed of the slotted truss girder suspension bridge is increased, the safety of the bridge is improved, the service life of the bridge is prolonged, and the device is obvious in control effect, simple in structure, convenient to install and high in economical performance.
本发明公开了一种提高桁架主梁颤振临界风速的气动构造，该装置由封槽格栅和中央稳定板组成，封槽格栅沿主桁架断面纵向连续布置在中央分隔带防撞护栏内，布置方式为沿全桥纵向连续布置；中央稳定板垂直连接在主桁架上平联横梁下表面，其中心线与桥梁中心线重合，中央稳定板沿全桥主桁架截面纵向连续布置，长度与桥梁主跨长度相同；本发明可以改变开槽桁架梁悬索桥底部和内侧的空气绕流流场特性，抑制或削弱漩涡的产生，从而提高开槽桁架梁悬索桥颤振临界风速，提高桥梁的安全性和延长桥梁的使用寿命，该装置控制效果明显、结构简单、安装方便且经济型性高。
Pneumatic structure for improving flutter critical wind speed of truss girder
一种提高桁架主梁颤振临界风速的气动构造
2023-01-03
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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