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Double tuned mass damper for vibration reduction of sling of suspension bridge
The invention provides a double tuned mass damper for vibration reduction of a suspension bridge sling, and belongs to the field of bridge structure vibration control. The connecting rods are uniformly arranged in the circumferential direction of the sling sleeve, and one ends of the connecting rods are fixedly connected with the sling sleeve; the first mass ring is connected with the tops of the other ends of the connecting rods through a plurality of first connecting columns; the second mass ring is connected with the bottom of the other end of the connecting rod through a plurality of second connecting columns; the length of the first connecting column is smaller than that of the second connecting column. Vibration energy of the sling of the damper is transmitted to the two mass rings through the sling sleeve, the connecting rod and the connecting column, the vibration energy is consumed through internal damping of the connecting column, and the vibration reduction effect is achieved. By setting two different lengths of the connecting columns, double tuning of natural vibration frequencies of different orders of the sling is achieved, and compared with a traditional tuned mass damper, vibration of the sling can be restrained in a wider frequency domain.
本发明提供了一种用于悬索桥吊索减振的二重调谐质量阻尼器，属于桥梁结构振动控制领域，包括：吊索套筒；多根连杆，沿吊索套筒周向均匀设置，一端均与吊索套筒固定连接；第一质量环，通过多根第一连接柱与多根连杆另一端的顶部连接；第二质量环，通过多根第二连接柱与连杆另一端的底部连接；第一连接柱的长度小于第二连接柱的长度。本发明提供的阻尼器的吊索振动的能量经过吊索套筒、连杆和连接柱传递至两个质量环，并通过连接柱的内部阻尼消耗振动能量，实现减振效果。通过设置两种不同的连接柱长度，实现与吊索不同阶次自振频率的二重调谐，相比于传统调谐质量阻尼器，能够在更宽的频域内抑制吊索的振动。
Double tuned mass damper for vibration reduction of sling of suspension bridge
The invention provides a double tuned mass damper for vibration reduction of a suspension bridge sling, and belongs to the field of bridge structure vibration control. The connecting rods are uniformly arranged in the circumferential direction of the sling sleeve, and one ends of the connecting rods are fixedly connected with the sling sleeve; the first mass ring is connected with the tops of the other ends of the connecting rods through a plurality of first connecting columns; the second mass ring is connected with the bottom of the other end of the connecting rod through a plurality of second connecting columns; the length of the first connecting column is smaller than that of the second connecting column. Vibration energy of the sling of the damper is transmitted to the two mass rings through the sling sleeve, the connecting rod and the connecting column, the vibration energy is consumed through internal damping of the connecting column, and the vibration reduction effect is achieved. By setting two different lengths of the connecting columns, double tuning of natural vibration frequencies of different orders of the sling is achieved, and compared with a traditional tuned mass damper, vibration of the sling can be restrained in a wider frequency domain.
本发明提供了一种用于悬索桥吊索减振的二重调谐质量阻尼器，属于桥梁结构振动控制领域，包括：吊索套筒；多根连杆，沿吊索套筒周向均匀设置，一端均与吊索套筒固定连接；第一质量环，通过多根第一连接柱与多根连杆另一端的顶部连接；第二质量环，通过多根第二连接柱与连杆另一端的底部连接；第一连接柱的长度小于第二连接柱的长度。本发明提供的阻尼器的吊索振动的能量经过吊索套筒、连杆和连接柱传递至两个质量环，并通过连接柱的内部阻尼消耗振动能量，实现减振效果。通过设置两种不同的连接柱长度，实现与吊索不同阶次自振频率的二重调谐，相比于传统调谐质量阻尼器，能够在更宽的频域内抑制吊索的振动。
Double tuned mass damper for vibration reduction of sling of suspension bridge
一种用于悬索桥吊索减振的二重调谐质量阻尼器
CAO MAOSEN (author) / WANG JIE (author) / HU SHUAITAO (author) / WANG YU (author) / ZHANG XIN (author) / QIAN XIANGDONG (author) / XIE CHUNHUI (author) / LI SHUAI (author)
2022-09-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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