论文部分内容阅读
宣城大桥是在湖北省宜城县跨越汉江的一座特大公路桥梁,全长1886.95m。设计荷载标准:汽车—20级,挂车—100,人群3.5kN/m~2。桥面净宽9m,人行道2×1.5m。三级航道,净跨不小于65m,净高10m,三级通航跨总长不小于400m。本桥位于汉江中游,沙洲纵横,主槽多变,属半游荡性河段。河床标高47.6～53.0m,冲刷标高34.78～35.90m,施工时最大水深4.80m。河床表层4～5m为细砂,次为卵砾
Xuancheng Bridge in Yicheng County, Hubei Province, spanning the Han River a large highway bridge, a total length of 1886.95m. Design load standards: car -20 level, trailer -100, crowd 3.5kN / m ~ 2. Bridge width 9m, sidewalk 2 × 1.5m. Third-class fairway, the net span of not less than 65m, net height 10m, three navigable across the total length of not less than 400m. The bridge is located in the middle reaches of the Han River, sandbar aspect, the main slot change, is a semi-loitering section. Riverbed elevation 47.6 ~ 53.0m, erosion elevation 34.78 ~ 35.90m, the maximum depth of construction 4.80m. River bed surface 4 ~ 5m for the fine sand, times for the gravel