论文部分内容阅读
由于受弯构件在受力前后符合平截面的假定,因此在邻近中和轴处总有一部分混凝土的应变值小于混凝土的受拉变形极限值,所以这部分混凝土仍然能够承受拉力。这就是我们用来计算钢筋应力σ_q的应力图,用它确定的裂缝宽度比按现行规范求得的裂缝宽度为小;且可把现行规范中建立在两种力学模式上的抗裂度和裂缝宽度的计算方法联系起来,从而解决了现行规范中抗裂安全系数越大的构件,其裂缝宽度也越大的矛盾。
Since the flexural members conform to the assumption of a flat cross-section before and after stress, the strain of a part of the concrete near the neutralization axis is less than the tensile deformation limit of the concrete, so that part of the concrete can still withstand the tension. This is the stress diagram we used to calculate the stress σ_q of the steel bar. The width of the crack, as determined by it, is smaller than the width of the crack obtained according to the current code. The crack resistance and the crack, which are based on the two mechanical models, Width of the calculation method linked to solve the current code crack greater safety factor of the component, the greater the width of the cracks in the conflict.