一种附加阻尼装置等代阻尼比计算方法
Based on dynamic theory and the principle of energy conservation, a generalized single-degree-of-freedom energy balance equation for bridge structural systems was established, solving the problems of complex, time-consuming, and low-accuracy calculation of intermediate damping ratio in existing technologies, and realizing efficient and accurate evaluation of the vibration reduction efficiency of damping devices.
CN117648738BActive Publication Date: 2026-07-17CHINA RAILWAY MAJOR BRIDGE RECONNAISSANCE & DESIGN INSTITUTE CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY MAJOR BRIDGE RECONNAISSANCE & DESIGN INSTITUTE CO LTD
- Filing Date
- 2023-11-06
- Publication Date
- 2026-07-17
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Figure CN117648738B_ABST
Abstract
本申请涉及一种附加阻尼装置等代阻尼比计算方法，包括：建立桥梁结构系统在某单一模态下的能量平衡方程，桥梁结构系统设有附加阻尼装置；获取待求模态下的各模态参数；施加冲击荷载，记录每个周期内振荡的幅值，以获取附加阻尼装置的等代阻尼比。本发明提供一种附加阻尼装置等代阻尼比计算方法，在动力学理论基础上，结合能量守恒的原理、各模态振动特点以及纵、竖弯大变形之间的关系，同时考虑大变形非线性振动和线性振动两项效应，对设有附加阻尼装置的桥梁结构系统建立了广义单自由度体系能量平衡方程，根据能量平衡方程施加冲击荷载进而精确计算附加阻尼装置的等代阻尼比，可以更为准确评估实际工程中阻尼装置的减振效率。
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