高商高速公路黄河特大桥主桥设计  

Design of Main Bridge of a Huanghe River Bridge Carrying a Section of Gaoqing-Shanghe Expressway

作　　者：王术剑 吴庆雄[3] 徐召 王宏博 刘正飞 WANG Shujian;WU Qingxiong;XU Zhao;WANG Hongbo;LIU Zhengfei(Shandong Hi-Speed Construction Management Group Co.,Ltd.,Jinan 250031,China;Shandong Hi-Speed Gaoshang Highway Co.,Ltd.,Jinan 251600,China;College of Civil Engineering,Fuzhou University,Fuzhou 350116,China;Shandong Provincial Communications Planning and Design Institute Group Co.,Ltd.,Jinan 250031,China)

机构地区：[1]山东高速建设管理集团有限公司,山东济南250031 [2]山东高速高商公路有限公司,山东济南251600 [3]福州大学土木工程学院,福建福州350116 [4]山东省交通规划设计院集团有限公司,山东济南250031

出　　处：《桥梁建设》2025年第1期125-131,共7页Bridge Construction

基　　金：国家自然科学基金项目(51678154,51608125);国家重点研发计划项目(2017YFE0130300)。

摘　　要：高商高速公路黄河特大桥主桥采用(190+260+260+190)m四跨连续钢管混凝土刚架系杆拱桥,采用拱墩固结、拱梁分离的结构体系,桥面全宽43.2 m。该桥采用钢管混凝土桁式平行拱肋,2片拱肋之间采用K撑和米字形横撑连接,钢管混凝土节点处拱肋内布设阵列式内栓钉以提高疲劳寿命。全桥采用整束挤压式吊杆体系,拱脚1号和2号短吊杆采用双吊杆,其余位置均采用单吊杆。全桥设置3组24根系杆来平衡拱脚水平推力。主梁采用双边工字钢梁,由工字形边纵梁、工字形横梁、工字形小纵梁通过高强螺栓连接而成。钢梁上铺设预制C50混凝土桥面板并现浇微膨胀混凝土湿接缝组成钢-混组合结构,桥面板厚24 cm。拱座采用内填混凝土+外包钢板的阶梯形钢-混组合拱座。主桥桥墩采用单箱单室空心墩,基础采用钻孔灌注桩基础。综合考虑结构受力、工程安全、质量、进度、经济等因素,主桥采用先梁后拱、分批次张拉系杆和吊杆的施工方法。采用空间杆系有限元模型对主桥结构进行强度和稳定性计算,并采用实体有限元模型对拱座局部受力进行计算,计算结果表明:主桥结构强度和稳定性及拱座局部受力均满足设计要求。The main bridge of a Huanghe River Bridge carrying a section of the Gaoqing-Shanghe Expressway is a concrete-filled steel tubular(CFST)tied arch bridge with four continuous spans of 190,260,260 and 190 m.The arch is fixed with the piers instead of the deck.The total deck width reaches 43.2 m.The two parallel CFST truss arches are connected by K-bracings and Warren-type bracings,and rows of studs are installed inside the nodes of the tubes to improve the fatigue life of the arch.At the arch springings,each hanger point contains two compacted steel wire hangers(namely the short hangers No.1 and No.2),the remaining hanger points incorporate one compacted steel wire hanger.Three groups of a total number of 24 ties are installed to balance the arch thrust.The deck system consists of two main steel I longitudinal girders,steel I floor beams and steel I stringers,and all the components are connected by high-strength bolts.The 24 cm-thick precast C50 concrete panels were jointed via pouring microexpansion concrete.The skewbacks are trapezoidal steel-cladding concrete structures.The piers are rectangular hollow piers supported by bored piles.To balance the load bearing performance of the structure and multiple factors,including construction safety,quality,schedule and economy,the deck was installed ahead of the arch,and the ties and hangers were tensioned in batches.The structural strength and stability of the main bridge as well as the load bearing behaviors of the skewbacks were numerically calculated and validated,using spatial link elements and solid elements respectively.

关 键 词：钢管混凝土拱桥 刚架系杆拱 内栓钉 双吊杆 系杆 钢-混组合拱座 桥梁设计 

分 类 号：U448.22[建筑科学—桥梁与隧道工程] U442.5[交通运输工程—道路与铁道工程]