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前言对使用上需要限制裂缝宽度的钢筋混凝土结构构件,应进行裂缝宽度验算。工程设计中一般是采用逐次渐近的方法,通过调整纵向钢筋配筋率和钢筋直径,直到计算的最大裂缝宽度δ_(fmax)符合要求为止。实践表明,验算的过程比较繁复,应当寻求较为简捷的途径。验算裂缝宽度时,结构设计人员所关心的是如何迅速准确地求得符合最大裂缝宽度要求的纵向钢筋配筋率,以便和强度计算的
Foreword Crack widths shall be checked for reinforced concrete structural members that require limited crack width. In the engineering design, a gradually asymptotic approach is generally adopted. By adjusting the longitudinal reinforcement ratio and the steel bar diameter until the calculated maximum crack width δ_(fmax) meets the requirements. Practice shows that the process of checking is complicated and should seek a more straightforward approach. When checking the crack width, the structural designer is concerned with how to quickly and accurately determine the longitudinal reinforcement ratio required to meet the maximum crack width requirement in order to calculate the strength of the reinforcement.