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双向受弯构件是工程中常常遇到的一种基本构件,由于“双向受弯”的复杂性,目前研究还不够深入、完善。我国现行钢筋混凝土结构设计规范(TJ10—74)第47条,虽对其计算原则作了规定,但还不能据此进行具体的计算。规范附录五给出了一种简化方法,但该法还存在几个问题:1.受压区面积为矩形的假定,与实际相差较大(见后面论述)。这样导致了中和轴位置的偏差,引起了受压、受拉区界线判断的误差,致使该法计算结果与实际相差较远。对于
Two-way flexural members are often encountered in engineering as a basic component, due to the “two-way bending” complexity, the current study is not enough depth and improvement. Article 47 of China’s current code for design of reinforced concrete structures (TJ10-74) stipulates the calculation principle, but no specific calculation can be made accordingly. A simplified method is given in Appendix V of the Rules, but there are several problems with this method: 1. The assumptions of rectangular area under pressure are quite different from the actual ones (see discussion below). This led to the deviation of the neutral axis position, causing the pressure, the margin of judgment by the margin error, resulting in the results of the Act and the actual difference between the far. for