【摘要】 本文基于地震现场考察资料介绍了汶川地震中梁式桥的一些典型震害实例,分析震害原因及其发生规律,并探讨强烈地震作用下防震害的新方法。新方法是以适当的构造方式改变地震能量的传输,减少桥面系与墩台的相对位移,保证下部结构的安全,从而达到防止震害的目的。更多还原

【Abstract】 This paper reports some typical damage samples of the girder bridge in the Wenchuan Earthquake,on the basis of an inspection visit to the earthquake site.The causes and patterns of the earthquake damage are analyzed.Meanwhile,a new method for seismic protection from the strong seismic excitation is proposed.The new method uses proper constructional measures to change the transmission of earthquake energy,to reduce the relative displacement between the superstructure and the pier,and to ensure the safety of the substructure,so as to prevent the earthquake damage.更多还原