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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,建立了采用时程分析的一个实用计算方法
In view of the frequent cracking of the middle bridge (culvert) pavement of Wuhuang Highway in Hubei Province, a viscoelastic damper was proposed under small bridge (Minghan) to provide energy dissipation and damping control force, Layer stress control within the allowable stress, so that the problem can be solved. In this paper, the element stiffness matrix and the energy dissipation control vector of viscoelastic dampers are deduced. A practical calculation method of time-history analysis is established by using the eight-node three-dimensional hexahedron isoparametric element