所属单位：土木工程学院

发表刊物：长安大学学报

关键字：中文关键字：桥梁工程，刚度修正法，缺损状况， 模态刚度，动力响应，英文关键字：bridge engineering ；stiffness correction method；de

摘要：Considering the multi-rib property and deficit conditions for most existing RC slab beam or T-beam bridges, research were conducted on the relation between kinetic response under ambient excitation and current deficit grade by means of dynamical finite stripe method. By assimilating the multi-rib beams as orthotropic plate, this paper set up the numerical model of finite stripe on vibration systems. Furthermore, it fulfilled the destination that the kinetic response for whole bridge was revealed through dynamic stiffness correction on stripe elements. As the relative error was limited in 5 percent contrasted to the experimental results which were obtained by dilapidated dynamic test on indoor bridge model from intact to destroyed, it showed that the finite stripe method of stiffness correction could simulate the change law of structural defects effectively. In conclusion, this lay a theoretical foundation for the inspection and evaluation on medium-small span bridges in large range using dynamic techniques.

备注：郭琦

合写作者：史强,宋一凡,贺拴海

第一作者：郭琦

论文类型：期刊论文

卷号：卷：28

期号：期：4

页面范围：页：57-61

是否译文：否

发表时间：2008-07-01