从环板的平衡方程出发，应用奇异函数法计算其在最大弯矩极限条件下的极限荷载。
Based on the equilibrium equation of annular plates, the limit loads of annular plates under ultimate condition of the maximal moment were calculated by singular function.
通常是按虚功法或板块极限平衡法推导极限荷载公式。
Usually virtual work or limit balanced plates are used to derive the ultimate load formulae for slabs.
接屈服线法或条带法的极限荷载设计不能完全保证抗裂或防止过度变形。
Ultimate load designs according to the yield-line or strip methods do not guarantee safety against cracking or excessive deformation.
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