通过多组平面及空间纸质结构模型抗压极限承载力试验,分析平面和空间纸质模型破坏形式与机理,研究空间与平面结构型式极限承载力与荷重比随高度、卷杆层数、长宽比等因素的变化规律。试验结果表明:平面结构破坏形态表现为竖向平面外弯曲失稳,空间结构的破坏形态表现为弯扭失稳;通过增加斜向支撑和节点处杆件的厚度不能有效提高结构的极限承载力,但可以提高结构延性,延缓结构破坏的时间;局部加厚竖向构件可以显著延缓结构的破坏速度。
Tests on several groups of paper-made plane and space structures are done to analyze the failure mode and mechanism,and how structure height,thickness and slenderness ratio can affect the ultimate capacity and load-weight ratio. Results show that plane structures usually lose stability out of plane. And spatial structures turn out flexural-torsional buckling modes when it reaches the ultimate capacity. It can 't improve the structure capacity obviously by locally strengthening,but it can make structure ductile,especially with the method of local thickening.