摘要
以128m跨度的铁路简支钢桁梁桥面系为研究对象，通过在纵梁上施加预应力，计算分析了施加预应力后，对纵梁强度、刚度及疲劳性能的影响，以及对主桁位移及杆件内力的影响，并给出了相应的结论．
This paper presents the research on the post-tensioned bridge decks of railroad steel trusses with a span of 128 m By calculating the stress, the displacement, and the cyclic stress range, it analyses the affluence onthe steel and their bridge decks because of the post-tensioned longitudinal girders and geves the conclu slons.
出处
《钢结构》
1999年第3期4-7,共4页
Steel Construction
