【摘要】 本文以哈尔滨市一公路桥修复工程为背景,介绍预应力钢箱梁的计算方法.文中所建立的简支索梁的基本概念及其假设和方程,为模型试验和实桥检测所验证.文中还推得张索对梁刚度提高系数,亦称张力参数,并建立其控制式,便于设计应用.更多还原

【Abstract】 By means of the renovation of a highway bridge in Harbin, this paper introduces a practicalanalysis method for designing steel box girder with prestressed tendons. In which the basic concept, supposition and equations for simply supported box girder with prestressed tendons are developed and verified by model test and measurement on original bridge. The stiffness incremental coefficient of the box girder contributed by prestressed tendons, which is also known as prestress parameter, is established with its controlling formula derived for practical use.更多还原