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该文介绍作者推导的一新的主要用于混凝土梁配筋计算的无量纲通用图表法,该图表法的“新”和“通用”分别在于推导时没有用传统的“等效矩形应力”换算以及一表可适用于不同钢筋级别和不同混凝土等级(C15―C50)的配筋计算。该法扩展了《混凝土结构设计规范》的混凝土应力-应变关系的运用范围,至今只用到了混凝土的极限应变。该法计算过程简便,求得配筋后,无须再验算受压区高度,同时还可用于弯压或弯拉构件的配筋计算。计算结果中除了含有计算钢筋面积所需的内力臂系数外,还有混凝土受压区边缘应变、受拉和受压钢筋应变、混凝土受压区高度等,结果直观和一目了然,并为混凝土构件的设计提供了一新的更为精确的设计方法。
This paper introduces a new non-dimensional general graph method which is mainly used in the calculation of reinforced concrete beam reinforcement. The “New” and “Generic” of the graph method are that there is no traditional “ The ”Rectangular Stress“ conversion and a table can be used for reinforcement calculations for different reinforcement grades and for different concrete grades (C15-C50). This law expands the scope of application of the concrete stress-strain relationship of ”Code for Design of Concrete Structures" and so far only uses the ultimate strain of concrete. The calculation method of the method is simple and convenient. After calculating the reinforcement, it is no longer necessary to check the height of the compression zone and can also be used to calculate the reinforcement of the bending or bending members. The calculation results include not only the internal force arm coefficient needed to calculate the area of reinforcement, but also the edge strain of concrete compression zone, the strain of tension and compression reinforcement, the height of concrete compression zone and so on. The results are intuitive and clear at a glance, Design provides a new, more accurate design method.