【摘要】 针对《门式刚架轻型房屋钢结构技术规程》(CECS102-2002)中刚架有关计算长度系数取值的不足,用有限元单元法对屋面均布荷载作用下柱脚刚结轻型门式刚架平面内稳定性能进行了大量研究,结果表明,主弯矩对柱脚刚结的门式刚架稳定性能有较大的影响。当斜梁轴力较大时,采用《门式刚架轻型房屋钢结构技术规程》规定的计算长度系数将偏于不安全。更多还原

【Abstract】 The technical specification for structure of one-story light-weight with portal frames (CECS102: 2002) has promulgated in China, however,there are still some problems in the party of effective length coefficients of the light-weight portal frame. the global stability of portal frame with members for rigid support subjected to roof uniform loading is studied by finite element method in this paper. the results shows that the influence of the axial forces acting on beams can’t be neglected when the axial forces is large.更多还原