期刊文献+

低矮型钢—混凝土组合梁桥方案设计与分析

Design and analysis of steel-concrete composite bridge with shallow-section
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摘要 以36m跨径的简支梁桥改造设计为例,分析比较了普通组合平行工字梁、预应力组合平行工字梁和组合箱梁三种桥型在相同荷载等级作用下的受力、变形以及经济性能.结果表明,组合梁桥具有较好的性能,预应力组合梁和组合箱梁的经济高跨比可以小于1/20. For an example of the alteration design of the simple-supported girder bridge with the span of 36?m, the static behaviors, such as stress at the critical section and deformation, the economical index of three types of composite bridges were analyzed and compared. The three types of composite bridges were considered, namely normal steel-concrete composite bridge with parallel I-shape girders, prestressed steel-concrete composite bridge with parallel I-shape girders, and steel-concrete composite bridges with box-girders. It is demonstrated that the steel-concrete composite girder bridge has good static behavior, and the economical height-to-span ratio of presstressed composite bridges with parallel girders and composite bridges with box-girders may exceed the value of 1/20.
出处 《福州大学学报(自然科学版)》 CAS CSCD 北大核心 2005年第3期345-350,共6页 Journal of Fuzhou University(Natural Science Edition)
基金 福建省自然科学基金计划资助项目(项目编号:E0410016)
关键词 钢-混凝土组合梁 预应力 箱梁 桥梁 steel-concrete composite girder prestressing box-girder bridge
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参考文献7

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