基于能量法的波形钢腹板桥梁体外力筋应力增量研究  

StressIncrement of External Tendons in Bridges with Corrugated Steel Webs Based on Energy Method

作　　者：苏俭[1] 

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《上海公路》2016年第2期36-39,11,共4页Shanghai Highways

摘　　要：体外预应力筋的应力增量计算分析是波形钢腹板桥梁设计中的关键问题之一。以体外预应力波形钢腹板简支梁为研究对象,考虑典型布筋形式与荷载工况,利用能量法推导了体外预应力筋的应力增量解析计算公式,其中考虑了剪切变形的影响。Stress increment of external tendons is one of the key concerns in the design of bridges with corrugated steel webs.Using the principle of energy conservation and considering the effect of shear deformation,the formulas for calculating stress increment of external tendons in the bridges with corrugated steel webs are derived,which are applicable to simply supported beams with typical profile of external tendons and suitable to two typical load types.

关 键 词：波形钢腹板 体外预应力 应力增量 剪切变形 能量法 

分 类 号：U441[建筑科学—桥梁与隧道工程]