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为适应我国具体情况,探索发展大跨径桥梁的新结构,河南省嵩县建成了一座用悬臂拼装方法施工的预应力混凝上桁架悬臂梁试验桥——龙驹沟桥。 预应力混凝土T型悬臂梁桥用悬臂拼装法施工,适宜于跨越大河深谷。过去这类桥梁一般采用箱形截面,因此自重较大,承担自重需要配置许多预应力钢筋。为了节约钢材、水泥,参考各地正大量修建的钢筋混凝土桁架拱桥的设计和施工经验,河南省交通局工程队、勘察设计院、洛阳地区公路总段、嵩县交通局和上海同济大学公路工程研究所等单位,组成设计、施工和科研三结合的机
In order to adapt to the specific conditions of our country and to explore the new structure of the development of long-span bridges, a prestressed concrete-jacketed cantilever test bridge constructed by cantilever assembly method was built in Song County, Henan Province. Prestressed concrete T-shaped cantilever beam bridge construction method, suitable for across the river valley. In the past, such bridges generally used box-shaped cross-section, so a larger self-weight, need to configure a lot of prestressed steel. In order to save the steel and cement, with reference to the design and construction experiences of the reinforced concrete truss arch bridges that are under construction in large quantities, the engineering team of Henan Provincial Transportation Bureau, Survey and Design Institute, the section of the highway in Luoyang, Song County Department of Transportation and Shanghai Tongji University The units, composed of design, construction and research of the three combined machine