摘要
杭州逸湖大桥采用130m跨径钢结构提篮拱桥,主拱肋拱轴线为抛物线,采用等高度矩形钢箱截面,内倾12°。风撑区别于常规的一字撑和K撑,采用整体式造型。系梁采用平行四边形钢箱截面,角度与内倾拱肋匹配,吊杆处对应设置横隔板。采用钢-混组合桥面,横梁顶面设置剪力钉与钢筋混凝土桥面板结合。吊杆采用叉耳销接方式。桥梁采用“先梁后拱”施工方法,少支架方案。采用空间有限元软件Midas/Civil对该桥的静、动力性能进行分析,结果表明各项指标均满足规范要求。
Hangzhou Yihu Bridge is a steel basket-handle arch bridge with a span of 130m.The main arch rib adopted rectangular steel box with a cross-section of equal height 12°inward.The arch rib axis was parabolic.The wind brace had an integral shape,which was different from conventional straight-line brace and K brace.The tie beam used a parallelogram steel box cross-section.The angle matched the inward arch rib,and a cross partition was set at the boom point.Steel-concrete composite deck was adopted,and shear studs were set on the top surface of the beam to combine with the reinforced concrete bridge deck.The boom adopted fork connection type.The bridge adopted beam-first-and-arch-next construction and less-trestle construction scheme.The finite element software Midas/Civil was applied to analyze the static and dynamic performance of the bridge,and the results showed that the indicators met all the requirements of design specification.
作者
吴巨军
郑江敏
WU Jujun;ZHENG Jiangmin
出处
《上海公路》
2020年第4期28-31,I0005,共5页
Shanghai Highways
关键词
钢结构
提篮拱桥
叠合梁
组合桥面
耐久性设计
结构分析
steel structure
basket-handle arch bridge
composite beam
composite deck
durability design
structural analysis
