摘要
针对哇加滩黄河大桥所在桥位处,交通运输不便,水深较大的特点,经比选后采用主跨560m的双塔双索面开口截面组合梁斜拉桥;针对斜拉桥平行索面索梁锚固锚拉板的疲劳应力幅较高的特点,将组合梁边主梁由工字形优化为上字形截面,提高了焊缝的疲劳强度;可为今后山区等交通不便地区的桥梁建设提供参考。
Aiming at the characteristics of inconvenient transportation and deeper water in the place where Yellow River Bridge of Wajiatan is located, the double-pylon double-plane open section composite beam cable-stayed bridge with the 560-m span is used after the comparison and selection. Specific to the characteristics of higher fatigue stress amplitude of parallel cable beam anchorage stayed slab of cable-stayed bridge, the main beam at the side of composite beam is optimized from the I shape to the glyph shape in order to improve the fatigue strength of welding joint, which can be referred for the construction of bridges in the inconvenient transportation of the mountainous areas.
出处
《城市道桥与防洪》
2016年第9期122-125,13,共4页
Urban Roads Bridges & Flood Control
关键词
深水基础
斜拉桥
开口截面组合梁
疲劳
抗风抗震
deep water foundation
cable-stayed bridge
open section composite beam
fatigue
wind resistance and seismic resistance
