A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pulley-heaving block device for restraining flutter of long-span bridge
The invention belongs to the technical field of bridge vibration control, and provides a pulley-heaving block device for inhibiting flutter of a large-span bridge, which is a vibration control system temporarily mounted on the bridge according to flutter control requirements and consists of a heaving block immersed in water, a rope for connecting a pulley block with the heaving block and an anchorage for providing downward tension. When the bridge vibrates upwards, due to the displacement amplification effect of the pulley block, the heaving block moves upwards in water at the speed multiple times that of the bridge, the gravity of the heaving block and the downward water resistance do negative work on the bridge, and vibration energy is consumed; when the bridge vibrates downwards, the heaving block and the bridge move approximately synchronously by optimizing design parameters, and large-amplitude flutter of the bridge is efficiently restrained. The reinforced concrete heaving block is more economical compared with a metal heaving plate, and due to the introduction of the pulley block, the total resistance borne by the bridge is multiple times of the gravity of the heaving block and the water resistance, so that the control efficiency is higher. The pulley-heaving block device has the advantages of being convenient to disassemble and assemble, economical, practical, safe and efficient.
本发明属于桥梁振动控制技术领域，提供了一种抑制大跨桥梁颤振的滑轮‑垂荡块装置，是根据颤振控制需要临时安装在桥梁上的振动控制系统，由浸没于水中的垂荡块、连接滑轮组与垂荡块的绳索、提供向下拉力的锚碇组成。桥梁向上振动时，由于滑轮组的位移放大作用，垂荡块在水中以数倍于桥梁速度向上运动，垂荡块重力和向下水阻力对桥梁做负功，消耗振动能量；桥梁向下振动时，通过优化设计参数使得垂荡块与桥梁运动接近同步，实现高效抑制桥梁大幅颤振。钢筋混凝土垂荡块相对金属垂荡板更为经济，由于引入滑轮组，桥梁受到总阻力数倍于垂荡块重力和水阻力，因此控制效率更高。本发明优势：拆装方便、经济实用、安全高效。
Pulley-heaving block device for restraining flutter of long-span bridge
The invention belongs to the technical field of bridge vibration control, and provides a pulley-heaving block device for inhibiting flutter of a large-span bridge, which is a vibration control system temporarily mounted on the bridge according to flutter control requirements and consists of a heaving block immersed in water, a rope for connecting a pulley block with the heaving block and an anchorage for providing downward tension. When the bridge vibrates upwards, due to the displacement amplification effect of the pulley block, the heaving block moves upwards in water at the speed multiple times that of the bridge, the gravity of the heaving block and the downward water resistance do negative work on the bridge, and vibration energy is consumed; when the bridge vibrates downwards, the heaving block and the bridge move approximately synchronously by optimizing design parameters, and large-amplitude flutter of the bridge is efficiently restrained. The reinforced concrete heaving block is more economical compared with a metal heaving plate, and due to the introduction of the pulley block, the total resistance borne by the bridge is multiple times of the gravity of the heaving block and the water resistance, so that the control efficiency is higher. The pulley-heaving block device has the advantages of being convenient to disassemble and assemble, economical, practical, safe and efficient.
本发明属于桥梁振动控制技术领域，提供了一种抑制大跨桥梁颤振的滑轮‑垂荡块装置，是根据颤振控制需要临时安装在桥梁上的振动控制系统，由浸没于水中的垂荡块、连接滑轮组与垂荡块的绳索、提供向下拉力的锚碇组成。桥梁向上振动时，由于滑轮组的位移放大作用，垂荡块在水中以数倍于桥梁速度向上运动，垂荡块重力和向下水阻力对桥梁做负功，消耗振动能量；桥梁向下振动时，通过优化设计参数使得垂荡块与桥梁运动接近同步，实现高效抑制桥梁大幅颤振。钢筋混凝土垂荡块相对金属垂荡板更为经济，由于引入滑轮组，桥梁受到总阻力数倍于垂荡块重力和水阻力，因此控制效率更高。本发明优势：拆装方便、经济实用、安全高效。
Pulley-heaving block device for restraining flutter of long-span bridge
一种抑制大跨桥梁颤振的滑轮-垂荡块装置
XU FUYOU (author) / ZHU WEIZHI (author) / HAN WANSHUI (author) / MAO TAOTAO (author) / AN WANBO (author) / SU BINGBING (author)
2021-06-22
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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