A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Heaving plate-spring combined control device for inhibiting chatter of offshore long-span bridge
The invention belongs to the technical field of bridge wind-induced vibration control, and provides a heaving plate-spring combined control device for inhibiting chatter of an offshore long-span bridge, which is characterized in that a heaving plate immersed in water is suspended at the bottom of a main beam through a rope, and the bottom of the heaving plate is subjected to the tension effect of a spring. When the bridge vibrates greatly due to wind, the heaving plate in water can be driven to move upwards, huge additional damping force and additional mass generated by the water body act on the heaving plate, meanwhile, the heaving plate is subjected to vertical downward pulling force of the parallel spring sets, energy consumption in the ascending process of the bridge can be increased, the descending speed of the heaving plate can also be increased, and the descending of the bridge is approximately synchronous. Compared with the prior art without a spring device, the double effects of spring energy dissipation and heaving plate descending acceleration can be fully exerted, and therefore bridge flutter can be more efficiently restrained or the size and the engineering cost of the heaving plate can be greatly reduced. The method has the advantages of simplicity, practicability, economy and high efficiency.
本发明属于桥梁风致振动控制技术领域，提供了一种抑制海上大跨桥梁颤振的垂荡板‑弹簧联合控制装置，是将浸没于水中的垂荡板通过绳索悬吊于主梁底部，垂荡板底部受到弹簧拉力作用。桥梁发生风致大幅振动时，会带动水中的垂荡板向上运动，水体随之产生的巨大的附加阻尼力及附加质量作用在垂荡板上，同时垂荡板受到并联弹簧组竖直向下拉力，既可以增加桥梁上升过程中的耗能，也可以加大垂荡板的下降速度，使得与桥梁下降接近同步。相对没有弹簧装置，本发明可以充分发挥弹簧耗能和加快垂荡板下降双重功效，因此可以更为高效抑制桥梁颤振或大幅减小垂荡板尺寸和工程造价。本发明的优势：简单、实用、经济、高效。
Heaving plate-spring combined control device for inhibiting chatter of offshore long-span bridge
The invention belongs to the technical field of bridge wind-induced vibration control, and provides a heaving plate-spring combined control device for inhibiting chatter of an offshore long-span bridge, which is characterized in that a heaving plate immersed in water is suspended at the bottom of a main beam through a rope, and the bottom of the heaving plate is subjected to the tension effect of a spring. When the bridge vibrates greatly due to wind, the heaving plate in water can be driven to move upwards, huge additional damping force and additional mass generated by the water body act on the heaving plate, meanwhile, the heaving plate is subjected to vertical downward pulling force of the parallel spring sets, energy consumption in the ascending process of the bridge can be increased, the descending speed of the heaving plate can also be increased, and the descending of the bridge is approximately synchronous. Compared with the prior art without a spring device, the double effects of spring energy dissipation and heaving plate descending acceleration can be fully exerted, and therefore bridge flutter can be more efficiently restrained or the size and the engineering cost of the heaving plate can be greatly reduced. The method has the advantages of simplicity, practicability, economy and high efficiency.
本发明属于桥梁风致振动控制技术领域，提供了一种抑制海上大跨桥梁颤振的垂荡板‑弹簧联合控制装置，是将浸没于水中的垂荡板通过绳索悬吊于主梁底部，垂荡板底部受到弹簧拉力作用。桥梁发生风致大幅振动时，会带动水中的垂荡板向上运动，水体随之产生的巨大的附加阻尼力及附加质量作用在垂荡板上，同时垂荡板受到并联弹簧组竖直向下拉力，既可以增加桥梁上升过程中的耗能，也可以加大垂荡板的下降速度，使得与桥梁下降接近同步。相对没有弹簧装置，本发明可以充分发挥弹簧耗能和加快垂荡板下降双重功效，因此可以更为高效抑制桥梁颤振或大幅减小垂荡板尺寸和工程造价。本发明的优势：简单、实用、经济、高效。
Heaving plate-spring combined control device for inhibiting chatter of offshore long-span bridge
一种抑制海上大跨桥梁颤振的垂荡板-弹簧联合控制装置
XU FUYOU (author) / HAN YAN (author) / CHEN ZENGSHUN (author) / MAO TAOTAO (author)
2021-05-28
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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