【作者】 李文岭；

【导师】 何保康；

【作者基本信息】 西安建筑科技大学 ， 结构工程， 2003， 硕士

【摘要】 在受压板件中设置中间加劲肋可以显著提高板件的弹性屈曲应力和极限承载能力，但是也使得板件的屈曲行为变得复杂。本文分别用分离加劲肋法和各向异性板法对纵向中间加劲板件的屈曲性能进行了理论分析，得到了屈曲应力和理论充分加劲刚度解析表达式。论文建立了有限条法分析模型，编制了有限条计算程序，用有限条法分析了帽形中间加劲板件的屈曲和帽形肋条的加劲性能。论文对帽形中间加劲肋的刚度、加劲肋的形状、尺寸和位置变化对中间加劲板件屈曲应力的影响作了分析研究。在分析基础上，论文给出了中间帽形加劲肋合理尺寸的建议，可供设计和修订设计规范参考。更多还原

【Abstract】 The use of intermediate stiffeners in the compression plate may significantly increase elastic buckling stress and ultimate capacity of the plate. However, the behavior of the plate with intermediate stiffeners would be complicated. The discrete stiffener solution and orthotropic plate solution are used for analyzing the buckling behavior of intermediately stiffened plates theoretically in this paper. Thus, closed-form solution of critical buckling stress and required adequate stiffening rigidity of the stiffener is obtained. A program finite strip analysis model is formed and finite strip computer software is also made in this paper. The buckling behaviors of plates with flat-hat intermediate stiffener are analyzed by employing finite strip method. The effects for buckling stress of the changes of the stiffener rigidity, shape, dimension, as well as its location are analyzed in this thesis. On the basis of all these analyze, a reasonable dimension limitation for the flat-hat intermediate stiffener is given, in order to provide reference for designs and the revising of design specification.更多还原