摘要
针对湖北省武黄公路中桥(涵)面铺装层因振动频繁开裂破损问题,提出在小桥(明涵)下设置粘弹性阻尼器,提供耗能减振控制力,使桥面铺装层应力控制在允许应力范围之内,使该问题得以解决。文中推导了粘弹性阻尼器的单元刚度矩阵和耗能控制力向量,将钢砼桥面采用八节点三维六面体等参单元。
The calculation methods of viscoelastic damper to vibrate of bridge are investigated. The element stiffness matrix of viscoelastic damper is established. The vibrate time history analysis is developed and the controlling effect of viscoelastic damper are studied. At last the bridge of WU HUANG ROAD added viscoelastic damper are analyzed. Numerical example shows that the response, including stresses and displacement, of bridge to vibrate are significantly reduced while viscoelastic damper is added.
基金
国家自然科学基金!资助课题(59678046)
