论文部分内容阅读
以试验和数值模拟的方式,研究了辅助索对斜拉索振动特性的影响。采用与实际结构尺寸和强度等效缩尺模型模拟超长拉索在实桥中位置,通过人为激励方式开展振动试验,研究过程通过不同的辅助索方式来研究索网振动衰减和基频变化情况,并对以上试验过程开展数值模拟。结果表明,辅助索可有效提高主索的振动频率,数值模拟基本可还原实验过程,为全面开展辅助索减震研究提供有力的依据。
The influence of auxiliary cable on the vibration characteristics of the stay cable was studied by means of experiment and numerical simulation. The equivalent scale model with the actual structure size and strength is used to simulate the position of the over-long cable in the real bridge. The vibration test is conducted by artificial excitation method. The research process studies the vibration attenuation and fundamental frequency variation of the cable network by different auxiliary cable methods , And the above test process to carry out numerical simulation. The results show that the auxiliary cable can effectively increase the vibration frequency of the main cable, and the numerical simulation can basically restore the experimental process, providing a strong basis for the study of auxiliary cable damping.