摘要
利用极限平衡条件,对内支座为简支、外支座为固支的环板进行了塑性极限分析,假定环板破坏时的塑性铰线为径环向,假定塑性铰线上的径向弯矩、切向弯矩均达到极限弯矩MP,根据力的平衡条件和力的边界条件,得出了环板极限状态时的内力计算公式,并通过试算得出了环板在不同的内外半径之比时,公式中的塑性铰线位置系数0ρ、1ρ的取值,使内支座为简支、外支座为固支的环板按极限状态设计时的计算问题大为简化.本文的环板的设计方法简单可行,便于在工程中应用.
Using limit equilibrium condition, the paper analyzed plastic limit of Ring slab with simple inside and fixed outside support. When the Ring slab is broken, supposing the plastic broken line is in the direction of diameter and annular, and supposing the bend moment on the plastic broken line in the direction of diameter and annular reach limit bend moment Me, according to the equilibrium and boundary condition of force, we obtained the inside force formulas of ring slab under limited condition. Calculated by trying,we obtained the volume of p0 ,p1 （p0, p1 was the position coefficient of the plastic broken line ） in the formulas of different ratios of inside radius and outside radius. According to limit state of ring slab with simple inside and fixed outside support, the design problem is simplified. The designing method in this paper is simple and practicable, and is convenient to use in engineering.
出处
《南昌大学学报（工科版）》
CAS
2006年第1期87-90,共4页
Journal of Nanchang University(Engineering & Technology)
关键词
内支座为简支
外支座为固支
环板
平衡条件
计算公式
simple inside support
fixed outside support
ring slab
equilibrium condition
calculate formulas
