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钢筋混凝土结构的纵向弯曲与稳定的研究,直到近二十年才得到较大的进展.由于钢筋混凝土结构由两种非匀质材料组成,研究构件的纵向弯曲与稳定问题要比一般匀质材料复杂得多.对于预应力混凝土结构来说就更为复杂.我国现行《钢筋混凝土设计规范》TJ10—74(下称规范)对预应力混凝土结构的纵向弯曲,仅在第118条中规定按普通钢筋混凝土第61条(64)式计算,引入同一个偏心距增大系数η值.然而,预应力混凝土具有与普通
The research on the longitudinal bending and stability of reinforced concrete structures has not been achieved until 20 years ago. Because the reinforced concrete structure is composed of two kinds of non-homogeneous materials, the longitudinal bending and stability problems of the studied members are higher than those of ordinary homogeneous materials. It is much more complicated. For prestressed concrete structures, it is more complicated. China’s current “Code for Design of Reinforced Concrete” TJ 10-74 (hereinafter referred to as the specification) is the longitudinal bending of prestressed concrete structures, and is only specified in Article 118. For the calculation of the reinforced concrete in Article 61 (64), the same eccentricity increase coefficient η value is introduced. However, the prestressed concrete has the same