大跨径组合梁斜拉桥钢-混结合段合理位置和受力性能研究  

Research on the Rational Position and Stress Performance of Steel-concrete Composite Sections in Large-span Composite Girder Cable-stayed Bridges

作　　者：李武安 赵澜婷 Wu-an;ZHAO Lan-ting(Zhengzhou Yellow River Engineering Co.,Ltd.,Zhengzhou 450000,China;Xi'an University of Architecture and Technology,Shaanxi Urban Infrastructure Digital Engineering Technology Research Center,Xi'an 710055,China)

机构地区：[1]郑州黄河工程有限公司,郑州450000 [2]西安建筑科技大学,陕西省城市基础设施数字化工程技术研究中心,西安710055

出　　处：《价值工程》2024年第35期93-96,共4页Value Engineering

摘　　要：为合理布置钢-混凝土混合梁大跨斜拉桥钢混结合段位置,对一座大跨混合梁斜拉桥的全桥不同钢混结合段进行有限元模拟,对不同钢混结合段位置的内力、位移、应力和动力特性进行了分析和研究。结果表明,结合面位置的不同对桥梁的受力有着较大影响,无论从主梁或主塔内力及位移,还是拉索索力方面来评价,结合面位于主梁中跨距桥塔20m处时为最优方案。To reasonably arrange the position of the steel-concrete composite section in a large-span steel-concrete composite girder cable-stayed bridge,a finite element simulation of the entire bridge with different steel-concrete composite sections was conducted.The internal forces,displacements,stresses,and dynamic characteristics at various composite section positions were analyzed and studied.The results show that the position of the composite interface significantly affects the stress of the bridge.Regardless of evaluating from the internal forces and displacements of the main girder or main tower,or from the cable forces,the optimal scheme is when the composite interface is located 20 meters away from the bridge tower at the mid-span of the main girder.

关 键 词：桥梁工程 混合梁桥 钢混结合段 有限元方法 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]