【摘要】 本文通过对两端固定铰支的扁拱在匀布竖向荷载作用下,在荷载作用平面内失稳突变模型的分析,确定了扁拱平面内失稳的突变模型为尖点突变。用突变理论解释了扁拱平面失稳发生跳跃屈曲的现象。更多还原

【Abstract】 This paper determines that catastrophe model of unstability of flat-arch,which is supported with two fixed-hinges at each end and carried on equivalentdistributed load, is the cuspoid catastrophe. It is explained why flatr-archunstability in load plane has a phenomenon of snap-through buckling bycatastrophe theory.更多还原