【作者】 韦建刚； 缪锋； 陈宝春； 吴庆雄；

【Author】 Wei Jiangang Miao Feng Chen Baochun Wu Qingxiong (College of Civil Engineering,Fuzhou University,Fuzhou Fujian 350108,China)

【机构】 福州大学土木工程学院；

【摘要】 采用时程分析法,对三向地震动作用下钢腹杆混凝土拱新型组合拱桥的地震特性进行分析,并与混凝土箱拱动力特性和地震响应特点进行对比。将三向地震作用的结果与在两个主方向(纵桥向和横桥向)同时施加地震动的计算结果进行比较分析,讨论了竖向地震动对混凝土箱拱和钢腹杆混凝土拱地震响应的影响。计算结果表明,钢腹杆混凝土这种新型拱圈结构具有较优越的抗震性能。更多还原

【Abstract】 Seismic performance of an innovative arch bridge type,reinforced-concrete arch bridge with steel truss webs,is analyzed using the time-history analysis method subjected to three-directional ground motions,and coMParison with that of the reinforced-concrete arch bridge with concrete webs is conducted.Then,the effect of vertical ground motions on the bridge with steel truss webs and reinforced-concrete arch bridge is discussed,and the performance subjected to three-directional ground motions and the two-directional(transversal and longitudinal direction) ground motions are coMPared.It is shown from the results that the innovative arch structure has a better dynamic and seismic performance.更多还原