摘要
为减小桥墩阻水面积,跨南水北调中线工程主干渠的大油村北桥2号墩墩身采用圆形钢管混凝土叠合柱。采用有限元法进行计算分析,研究叠合柱钢管壁厚与轴向应力比率、弯曲应力比率、抗剪应力比率和组合应力比率、荷载下位移及自振周期等因素的影响规律。结果表明,叠合柱能以较小的直径满足既定承载能力的要求,比普通混凝土桩柱式结构具有更好的经济性和抗震性能。
To reduce the water resistance area of bridge pier,the intermediate pier of the Dayoucun North Bridge crossing the trunk cannel of the Central Line of the South-to-North Water Diversion Project was designed as a circular concrete-filled steel tube(CFST) and concrete composite column pier.The finite element method was used to calculate,analyze and study the influential laws of several factors like the steel tube wall thickness and axial stress ratio,bending stress ratio,shear stress ratio,combined stress rat...
出处
《世界桥梁》
北大核心
2010年第2期52-54,58,共4页
World Bridges
关键词
桥墩
钢管混凝土结构
叠合柱
承载力
抗震
有限元法
pier
concrete-filled steel tube structure
composite column
load bearing capacity
seismic resistance
finite element method
