大跨度连续梁桥的减隔震和延性抗震分析

采用加强固定盆式支座和墩柱强度的方法来强行保证大跨度连续梁桥在强震作用下的结构安全,固定墩会承受较大的地震力,由此导致设计的不经济性.针对上述现象,采用弹塑性减震耗能装置方案对强震区大跨连续梁桥进行减隔震设计.计算表明,通过合理设置装置的屈服力以及后屈曲刚度比,弹塑性减震耗能装置可以起到明显减小固定墩所受地震力、提高结...

Analysis of Seismic Isolation and Ductility for Long-span Continuous Bridges

If the fixed pot bearing and pier of long-span continuous bridge are reinforced to ensure the structure safety under strong earthquake,the bridge pier will suffer from larger seismic load,thus result in uneconomical design.Aimed at the above-mentioned problem,the elasticl-plastic isolation and energy dissipation device was proposed to do the seismic isolation design on the long-span continuous girder bridge in strong earthquake area.The calculation shows that by setting parameters about yield force and post...