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钢筋混凝土圆板是工程结构中常见的一种结构形式。目前,这种圆板的设计都是按弹性理论进行内力分析,然后再按一般钢筋混凝土板的公式进行配筋计算。这样就出现了内力分析按弹性理论、而配筋计算则按塑性理论的不协调现象。此外,弹性理论的公式一般都很冗繁,纵然有现成的表格可以利用,使计算工作可以得到一些简化,但仍然要分别计算不同半径处(通常要计算10个不同的半径)的径向弯矩和切向弯矩。 如果考虑钢筋混凝土板的塑性及其内力可以重分配的性质,用极限平衡法计算钢筋混凝土圆板,则上述的矛盾和缺点都可以得到解决。
Reinforced concrete circular plates are a common structural form in engineering structures. At present, the design of this circular plate is based on the elastic theory of internal force analysis, and then calculated according to the general formula of reinforced concrete slab reinforcement. In this way, there is an inconsistency in the internal force analysis according to the elasticity theory and reinforcement calculation in the plasticity theory. In addition, the formulae of elasticity theory are generally very tedious. Even though there are ready-made tables that can be used to simplify the calculation, the radial bending moments at different radii (usually 10 different radii are usually calculated) must be calculated separately. And tangential bending moments. If the plasticity of the reinforced concrete slab and its internal forces can be redistributed, the above-mentioned contradictions and shortcomings can all be solved by using the limit equilibrium method to calculate the reinforced concrete circular slab.