摘要
本文以简支的斜交薄壁单室箱梁为对象,采用有限分段法,分析了扭转与弯曲的耦合效应,并作了有机玻璃模型在扭转荷载作用时的试验。结果表明:对于梁的中间区段,当斜交角达到40°时,其扭曲正应力的计算值仍与实测值基本一致;对于两端附近的梁段,斜交角在20°范围内,扭曲正应力的计算值与实测值也基本相符。最后还提出了采用斜交箱梁的子结构法进行分析的建议。
In this paper, the finite segment method is adopted to analyze the coupling effect of torsion and flexure in the thin-walled skew box girders. A model is tested to justify the method. With a pair of torsional loads acting at middle of the span, the experimental data shows that: (1) for the middle parts of the girder, the calculated distortional stresses are in consistence with the experimental values when the skew angle is varied from 0° to 40°; (2) at the skew ends, accordance appears only for skew angles up to 20°. It is hence suggested that the sub- structure method should be used to analyze the beams with large skew angles
出处
《西南交通大学学报》
EI
CSCD
北大核心
1989年第2期42-50,共9页
Journal of Southwest Jiaotong University
