新型浮动式对压蝶形弹簧-拉索减震器设计与力学性能试验  

Design and mechanical performance test of new type of floating counter pressure disc spring-stay cable shock absorber

作　　者：吴小蕙 王彦峰 纪少锋 肖发平 汪大洋[2] WU Xiaohui;WANG Yanfeng;JI Shaofeng;XIAO Faping;WANG Dayang(Power Grid Planning Research Center of Guangdong Power Grid Co.,Ltd.,Guangzhou 510080,Guangdong,China;School of Civil Engineering and Transportation,Guangzhou University,Guangzhou 510006,Guangdong,China)

机构地区：[1]广东电网有限责任公司电网规划研究中心,广东广州510080 [2]广州大学土木与交通工程学院,广东广州510006

出　　处：《建筑科学与工程学报》2025年第2期39-47,共9页Journal of Architecture and Civil Engineering

基　　金：国家自然科学基金项目(52178467);南方电网公司科技项目(037700KK52220039);广州市教育局项目(202235058,202102010459)。

摘　　要：提出了一种新型浮动式对压蝶形弹簧-拉索减震器,其在拉压荷载作用下均处于受压工作状态,且初始刚度可调节;推导了减震器承载力、竖向刚度、变形能等参数的计算公式,建立了相关设计参数之间的量化关系;此基础上设计加工了该新型减震器试件,在静态、动态荷载作用下开展了力学性能试验研究,通过与理论计算结果对比验证了减震器的合理性,揭示了减震器力学性能与加载频率、预压变形量、加载幅值之间的影响规律。结果表明:新型蝶形弹簧-拉索减震器可通过调节拉索长度、改变蝶形弹簧数量满足不同场合设计需求,试验结果与理论结果吻合良好,在设计变形量下的相对误差仅为3.82%;相同预压变形条件下,减震器等效刚度和等效阻尼比随加载频率增大而缓慢下降;相同加载频率下,等效刚度和等效阻尼比随预压变形量增大呈线性放大趋势,等效刚度的增幅为41.37%;相同加载频率、预压变形量条件下,增大加载幅值有助于提升减震器的耗能能力。A new type of floating counter pressure disc spring-stay cable shock absorber was proposed,which was in compression working state under tension and compression loading and the initial stiffness could be adjusted.The design formulas of bearing capacity,vertical stiffness,deformation energy and other parameters of the shock absorber were derived.The quantitative relationship between relevant design parameters was established.On the basis,the new shock absorber was designed and processed,and the mechanical properties were tested under static and dynamic loading.The rationality of the proposed shock absorber was verified by comparing with the theoretical results.The influence of loading frequency,preloading deformation and loading amplitude on the mechanical properties of the shock absorber was revealed.The results show that the new type of shock absorber can meet the design requirements of different occasions by adjusting the length of the stay cable and changing the number of disc springs.The experimental results are in good agreement with the theoretical results,and the relative error under the design deformation is only 3.82%.Under the same preloading deformation,the equivalent stiffness and equivalent damping ratio of the shock absorber decrease slowly with the increase of the loading frequency.Under the same loading frequency,the equivalent stiffness and equivalent damping ratio have a linear amplification trend with the increase of preloading deformation,and the increase of equivalent stiffness is 41.37%.Under the same loading frequency and preloading deformation,increasing the loading amplitude will help to improve the energy consumption capacity of the shock absorber.

关 键 词：蝶形弹簧 拉索 减震器 性能试验 参数影响 

分 类 号：TU352[建筑科学—结构工程]