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在钢筋混凝土受弯构件的设计中,为了限制使用阶段的变形,或者为了在超静定结构中求解内力,都需要进行刚度计算。根据国内外的广泛研究,影响钢筋混凝土受弯构件刚度的因素很多。我国现行规范TJ10-74给出的刚度计算公式比较全面地考虑了这些因素的影响,因而计算值与实验值的符合程度较好,见文献[2]。但是,该计算公式比较繁琐。本文在深入学习现规范计
In the design of reinforced concrete flexural members, stiffness calculations are required to limit the deformation during use, or to solve internal forces in statically indeterminate structures. According to extensive research at home and abroad, there are many factors that affect the rigidity of reinforced concrete flexural members. The stiffness calculation formula given by China’s current specification TJ10-74 more fully considers the influence of these factors, and the calculated values are in good agreement with the experimental values, see [2]. However, this formula is cumbersome. This article is an in-depth study of the current specification.