基于TMD减振技术的景观桥人致振动控制研究

人行桥的舒适度现已成为景观类桥梁设计的一个重要指标。本文以国内某景区内的人行景观桥工程为例,采用Midas civil有限元分析软件建立三维有限元模型,分析了该桥的结构动力特性及人致振动响应。人致振动加速度时程响应结果表明该桥的舒适度未能满足设计和规范的要求。因此,提出了采用电涡流调谐质量阻尼器(TMD)的减振设计方案,并通过实际工程中评估了减振效果,证实方案的可行性

Research on Human-induced Vibration Control of Landscape Bridges Based on TMD Vibration Reduction Technology

The comfort of pedestrian bridges has become an important indicator in landscape bridge design. This article takes a pedestrian landscape bridge project in a certain scenic area in China as an example, and uses Midas Civil finite element analysis software to establish a three-dimensional finite element model. The structural dynamic characteristics and human induced vibration response of the bridge are analyzed. The time-history response results of human induced vibration acceleration indicate that the comfort of the bridge does not meet the requirements of the design and specifications. Therefore, a vibration reduction design scheme using an eddy current tuned mass damper (TMD) was proposed, and the effectiveness of the vibration reduction was evaluated through practical engineering, confirming the feasibility of the scheme