斜拉索外置式黏滞阻尼器实用设计方法

发布时间：2018-04-15 14:17

本文选题：桥梁工程 + 黏滞阻尼器　；参考：《中国公路学报》2015年11期

【摘要】：为便于工程人员对斜拉索外置式黏滞阻尼器进行设计,快速获取阻尼器参数以及支撑刚度、安装高度等参数,在斜拉索-阻尼器系统模态阻尼比统一公式的基础上,通过公式变量分离、拉索参数统计等方法,得到了可近似独立衡量各参数影响的黏滞阻尼器实用设计方法。通过误差分析和设计实例验证了该方法的准确性与可靠性。结果表明:该实用设计方法得到的阻尼比与最优阻尼比的理论相对误差小于8.1%,实桥应用相对误差小于2.3%;工程人员可以应用此方法,根据拉索的类型、长度、索力等参数,方便地查表获得外置式黏滞阻尼器的设计参数及安装要求,其准确性及预留的安全系数能够满足工程设计要求。
[Abstract]:In order to facilitate the design of the external viscous damper of stay cables, the parameters of the damper, the stiffness of the support and the installation height can be obtained quickly. Based on the unified formula of the modal damping ratio of the cable-damper system,The practical design method of viscous damper which can be used to measure the influence of each parameter is obtained by means of formula variable separation and cable parameter statistics.The accuracy and reliability of the method are verified by error analysis and design examples.The results show that the theoretical relative error between the damping ratio and the optimal damping ratio obtained by the practical design method is less than 8.1, and the relative error of the real bridge is less than 2.3.The engineers can apply this method according to the type, length, cable force and other parameters of the cable.The design parameters and installation requirements of the external viscous damper can be easily obtained by looking up the table conveniently. The accuracy and the reserved safety factor can meet the engineering design requirements.
【作者单位】：浙江大学建筑工程学院;台州市公路管理局;无锡市弘谷振控技术有限公司;
【基金】：国家自然科学基金项目(51178426,51478429,51522811) 浙江省自然科学基金杰出青年项目(LR13E080001) 港澳台科技合作专项项目(2012DFH70130) 中央高校基本科研业务费专项资金项目
【分类号】：U448.27;U441.3

【共引文献】