上海浦星公路230m组合桥面系杆拱桥设计  

Design of 230 m Composite Deck Tied Arch Bridge on Shanghai Puxing Highway

作　　者：周云岗 洪惠卿 鄢余文 ZHOU Yun-gang;HONG Hui-qing;YAN Yu-wen(Shanghai Municipal Engineering DesignInstituteCo.,Ltd.,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《中国市政工程》2024年第5期16-19,25,156,157,共7页China Municipal Engineering

摘　　要：上海浦星公路主桥采用下承式组合桥面系杆拱桥,跨径为230 m,桥宽43.4 m。主拱拱轴线采用二次抛物线,矢跨比为1/5,拱肋高3.6 m,拱肋之间通过6道一字横撑连接,拱肋内倾角度12°。拱桥采用提篮拱布置,主拱由拱肋和横撑组成。拱肋采用焊接矩形钢箱结构,沿拱轴线保持等高等宽。吊杆锚固拱上采用叉耳板,系梁上采用锚管;叉耳板和锚管均插入隔板。桥面系为组合桥面结构,桥面板采用C50厚260 mm预制混凝土板。关键技术问题包括合理成桥状态确定、吊杆和系杆锚固设计、混凝土桥面板开裂控制分析和拱梁结合部构造分析等。计算分析表明,该桥的静力、动力及稳定性满足设计要求。The main bridge of Shanghai Puxing Highway is a through composite deck tied arch bridge with a span of 230 m and a width of 43.4 m.The arch axis of the main arch adopts a quadratic parabola,the rise span ratio is 1/5,the arch rib is 3.6 m high,and the arch ribs are connected by 6 straight cross braces,with an inclination angle of 12°.The arch bridge adopts a basket arch arrangement,and the main arch is composed of arch ribs and transverse braces.The arch ribs adopt a welded rectangular steel box structure,maintaining equal height and width along the arch axis.Fork ear plates are used on the suspension rod anchoring arch,and anchor pipes are used on the tie beam.Both the fork ear plate and anchor tube are inserted into the partition.The bridge deck system is a composite bridge deck structure,and the bridge deck is made of C50 thick 260 mm precast concrete slabs.The key technical issues include determining the reasonable completion state of the bridge,designing the anchorage of the suspension rods and tie bars,analyzing the cracking control of the concrete bridge deck,and analyzing the structure of the arch beam joint.Calculation analysis shows that the static,dynamic,and stability of the bridge meet the design requirements.

关 键 词：系杆拱 组合桥面 钢箱拱肋 拱梁结合段 

分 类 号：U488.225[交通运输工程—载运工具运用工程]