中欧规范RC桥墩抗震设计及验算方法对比研究

地震作用下钢筋混凝土（RC）桥墩容易损坏。为完善RC桥墩的抗震设计及验算方法，对比最新中国和欧洲规范中关于RC桥墩的延性抗震设计及验算方法的不同之处。基于Midas/Civil软件所建立的常规连续梁桥有限元模型，对比分析采用中欧规范开展的RC桥墩延性抗震设计及验算结果。结果表明:中欧规范中关于RC桥墩的延性抗震设计理念、抗剪和变形验算方法及延性构造细节均有区别。基于中欧规范设计的RC桥墩配筋情况存在差异。与中国规范相比，欧洲规范关于RC桥墩的横向钢筋配筋率和纵筋最小配筋率要求较高，有利于保证结构的抗剪强度和延性；箍筋最大间距要求较低，不利于防止纵筋压曲。

Comparative study on seismic design and verification methods of RC piers in Chinese and European specifications

Reinforced concrete(RC)piers are easily damaged under the earthquake action. To improve the seismic design and verification methods of RC piers,the differences in the seismic design and verification methods of RC piers between the latest Chinese and European specifications were compared. Based on the finite element model of an ordinary continuous girder bridge established using the software Midas/Civil,the comparative study on the seismic design and verification of the RC piers,considering Chinese and European specifications,were conducted. The results show that the seismic design philosophy,the verifications of shear resistance and deformation,and the details of ductile measures for RC piers in Chinese and European specifications are different. The reinforcement in RC piers designed considering Chinese and European specifications are different. Compared with the requirements in Chinese specification,the requirements for the transverse reinforcement ratio and the minimum longitudinal reinforcement ratio of RC piers in European specification are higher,which is beneficial to the shear strength and ductility of the structure;the maximum stirrup spacing is lower,which is not good for protecting the buckling of longitudinal reinforcement.