Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Phononic crystal type bridge pier vibration reduction structure
The invention discloses a phononic crystal type bridge pier vibration reduction structure which comprises a bridge pier, a cavity is formed in the bridge pier, a plurality of horizontal partition plates are arranged in the vertical direction of the cavity at intervals, and a plurality of phononic crystal units are arranged between every two adjacent horizontal partition plates. The phononic crystal unit comprises a mass block made of a conductor and a magnetic cylinder capable of generating a horizontal magnetic field, the magnetic cylinder is fixed on the horizontal partition plate located on the lower portion, the mass block is connected with the horizontal partition plate located on the upper portion through a vertical spring and a damper, and the mass block is arranged above the magnetic cylinder in a suspended mode; the mass block, the vertical spring and the damper jointly form a local resonator; according to the scheme, the local resonators which are vertically and periodically arranged can absorb vibration of a specific frequency to generate band gaps, vibration waves are prevented from being spread from the pier bottom to the pier top, and therefore the vibration reduction effect is achieved; and meanwhile, a horizontal magnetic field can be formed in the magnetic cylinder, when the mass block reciprocates up and down, an electromagnetic damping phenomenon can be generated, and the effect of further restraining vertical vibration of the pier is achieved.
本发明公开了一种声子晶体式桥墩减振结构，其包括桥墩，桥墩内设置有腔体，腔体的竖直方向上间隔排列有若干水平隔板，相邻两块水平隔板之间均设置有若干声子晶体单元，声子晶体单元包括由导体制成的质量块和可产生水平磁场的磁缸，磁缸固定在位于下部的水平隔板上，质量块通过竖向弹簧和阻尼器与位于上部的水平隔板连接，且质量块悬空设置在磁缸的上方，质量块、竖向弹簧和阻尼器共同构成局域共振子；本方案竖向周期性排列的局域共振子会吸收特定频率的振动而产生带隙，抑制振动波从墩底传播至墩顶，从而达到减振的效果；同时磁缸内可形成水平磁场，质量块上、下往复运动时，会产生电磁阻尼现象，达到进一步抑制桥墩竖向振动的效果。
Phononic crystal type bridge pier vibration reduction structure
The invention discloses a phononic crystal type bridge pier vibration reduction structure which comprises a bridge pier, a cavity is formed in the bridge pier, a plurality of horizontal partition plates are arranged in the vertical direction of the cavity at intervals, and a plurality of phononic crystal units are arranged between every two adjacent horizontal partition plates. The phononic crystal unit comprises a mass block made of a conductor and a magnetic cylinder capable of generating a horizontal magnetic field, the magnetic cylinder is fixed on the horizontal partition plate located on the lower portion, the mass block is connected with the horizontal partition plate located on the upper portion through a vertical spring and a damper, and the mass block is arranged above the magnetic cylinder in a suspended mode; the mass block, the vertical spring and the damper jointly form a local resonator; according to the scheme, the local resonators which are vertically and periodically arranged can absorb vibration of a specific frequency to generate band gaps, vibration waves are prevented from being spread from the pier bottom to the pier top, and therefore the vibration reduction effect is achieved; and meanwhile, a horizontal magnetic field can be formed in the magnetic cylinder, when the mass block reciprocates up and down, an electromagnetic damping phenomenon can be generated, and the effect of further restraining vertical vibration of the pier is achieved.
本发明公开了一种声子晶体式桥墩减振结构，其包括桥墩，桥墩内设置有腔体，腔体的竖直方向上间隔排列有若干水平隔板，相邻两块水平隔板之间均设置有若干声子晶体单元，声子晶体单元包括由导体制成的质量块和可产生水平磁场的磁缸，磁缸固定在位于下部的水平隔板上，质量块通过竖向弹簧和阻尼器与位于上部的水平隔板连接，且质量块悬空设置在磁缸的上方，质量块、竖向弹簧和阻尼器共同构成局域共振子；本方案竖向周期性排列的局域共振子会吸收特定频率的振动而产生带隙，抑制振动波从墩底传播至墩顶，从而达到减振的效果；同时磁缸内可形成水平磁场，质量块上、下往复运动时，会产生电磁阻尼现象，达到进一步抑制桥墩竖向振动的效果。
Phononic crystal type bridge pier vibration reduction structure
一种声子晶体式桥墩减振结构
LIU QUANMIN (Autor:in) / YANG XUELONG (Autor:in) / GAO KUI (Autor:in) / SONG LIZHONG (Autor:in) / LUO GUOZHENG (Autor:in) / FENG QINGSONG (Autor:in)
17.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken