不同配筋率的钢筋混凝土阻尼性能的实验研究

摘要

Concrete damping function in improving the structure stability, safety and durability, and mitigation of earthquake disasters, etc. It is of great significance. In this paper, experimental modal analysis method of different reinforcement ratio of reinforced concrete beam under the each order natural frequency of damping performance was studied, the results show that with the increase of reinforcement ratio, the damping ratio of reinforced concrete's structural members are being reduced. Research component under free vibration dynamic characteristics for the seismic design of reinforced concrete structure has a reference value.%混凝土的阻尼功能对于提高结构稳定性、安全性和耐久性以及防震减灾等具有重要意义。本文通过试验模态分析法对不同配筋率的钢筋混凝土梁在其各阶固有频率下的阻尼性能进行了研究，结果表明随着配筋率的提高，钢筋混凝土构件的阻尼比是不断减小的。研究构件在自由振动下动态特性对于混凝土结构抗震设计有参考价值。