高阻尼橡胶隔震支座的力学性能及隔震效果分析研究

本文对新型高阻尼橡胶隔震支座的力学性能及此支座对桥梁的隔震性能进行了实验研究。通过正弦波实验研究其力学性能,实验结果表明新型高阻尼橡胶隔震支座是速度相关型支座,加载频率对其等效水平刚度有较大的影响,但对其等效阻尼系数影响不大。然而加载经历对新型高阻尼橡胶隔震支座对其等效水平刚度与等效阻尼系数均有较大的影响。同时通过数值分析精确的定量地验证了新型高阻尼橡胶支座对桥梁的减隔震效果。

Analysis and study on mechanical properties and isolation effect of high damping rubber isolation bearing

In this paper, the mechanical properties of a new type of high damping rubber isolation bearing and the isolation properties of this bearing on Bridges are studied experimentally. The mechanical properties of the new high-damping rubber isolation bearings are studied by sine-wave experiments. The experimental results show that the new high-damping rubber isolation bearings are velocity dependent bearings, and the loading frequency has great influence on the equivalent horizontal stiffness, but little influence on the equivalent damping coefficient. However, the loading experience has a great influence on the equivalent horizontal stiffness and equivalent damping coefficient of the new high damping rubber isolation bearing. At the same time, the seismic isolation effect of the new high damping rubber bearing on the bridge is verified precisely and quantitatively by numerical analysis.