【摘要】 以广元市内250座桥梁为样本总体,并按桥梁类型及建造年代的不同将样本进行分类,通过对这些桥梁的震后调查资料进行统计,详细阐述了各类型桥梁的破坏方式及其震害现象;对比研究了不同类型桥梁在各种地震损伤等级下的损伤比例,进而得到各类型桥梁抗震性能的优劣;通过对不同年代建造桥梁破坏情况的比较,认识到桥梁工程抗震设计规范的必要性以及提高桥梁工程抗震理论水平的重要意义,最后探讨了桥梁破坏的原因。更多还原

【Abstract】 Total 250 bridges in Guangyuan were investigated after Wenchuan Earthquake and these bridges were classified according to its type and construction time.Based on the investigation,the common damage phenomena of different type bridges are derived in detail;and the seismic performances of different type bridges are compared based on the damage proportion of the bridge under different damage conditions.It is concluded from the comparison among seismic performances of bridges in different time that,to promote the general code for bridge design is necessary and important.The reasons causing the damage of these bridges are discussed finally.更多还原