冷轧扭钢筋混凝土受弯构件配筋率与裂缝宽度之间的关系

RELATIONSHIP BETWEEN TENSILE STEEL RATIO AND CRACK WIDTH IN REINFORCED CONCRETE FLEXURAL MEMBERS WITH RECTANGULAR SECTIONS REINFORCED BY COLD FLATTENED AND TORQUED STEEL BARS

本文依据有关的结构设计规范和规定,对冷轧扭钢筋配筋的钢筋混凝土矩形截面受弯构件纵筋配筋率与最大裂缝宽度之间的关系进行了分析。分析表明,当最大裂缝宽度的允许值取为0.3mm 时,构件的裂缝宽度均能满足要求。因此,此类构件的裂缝宽度可不必验算。

Based on the codes for structure design,the analysis of relation- ship between tensile steel ratio and crack width of reinforced concrete flexu- ral members with rectangular sections reinforced by cold flattened and tor- qued steel bars is presented in this paper.The analysis indicates that the ma- ximum crack width of these members all can be satisfied when the allowable maximum crack width is taken as 0.3mm.Thus,the check of crack width of these members needn't be made.