钢筋混凝土结构的基本计算原理是先把构件截面上的应力分布,通过适当变换,等效成力学上的应力分布图形,然后利用微段体上力的平衡规律,利用静力学方程结合钢筋混凝土结构的特点来解答。因此把钢筋混凝土构件截面上的应力分布等效成力学上的应力分布图形是首要解决的问题,而要等效变化自然必须符合一些条件才能保证结果的正确性。这些条件主要包括(1)材料应力的基本假定。(2)受压区混凝土应力分布的等效简化。(3)保证适筋梁的条件。 The basic calculation principle of reinforced concrete structure is that the stress distribution on the cross section of the component is first transformed into the stress distribution pattern equivalent to mechanics through appropriate transformation and then the equilibrium law of the force on the micro-segment body is utilized. By using the static equation and the reinforced concrete structure Features to answer. Therefore, it is the most important problem that the stress distribution on the section of reinforced concrete member is equivalent to the mechanical stress distribution. However, it is necessary to meet some conditions to ensure the correctness of the result. These conditions mainly include (1) the basic assumption of material stress. (2) Equivalent simplification of concrete stress distribution in compression zone. (3) to ensure that the beam conditions.