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柱下钢筋混凝土单独基础是工程中常用的一种基础形式。鉴于目前建筑结构计算手册尚缺单独基础底面配筋计算图表,设计人员在进行该项计算时须按通常的计算步骤:即计算底板弯矩直至计算钢筋面积等,比较繁琐。本文提出一种配筋计算图及计算方法,比较简捷方便,可供设计人员在实际工作中使用。 (一)公式推导及使用说明钢筋混凝土单独基础底面配筋计算通常计算步骤如下: 根据现行规范TJ10-74公式计算底板弯矩(图1): I-I截面
The separate foundation of reinforced concrete under columns is a basic form commonly used in engineering. In view of the fact that the calculation manual of the building structure still lacks separate calculation charts for the calculation of floor reinforcements, the designer must follow the usual calculation steps when performing the calculation: that is, calculating the bending moment of the floor until the calculation of the area of the steel bars, etc., which is cumbersome. This paper proposes a calculation graph and calculation method for reinforcement, which is simple and convenient and can be used by designers in practical work. (1) Formula derivation and usage instructions The calculation procedure for the reinforcement of the sole reinforced concrete foundation is usually as follows: Calculate the floor bending moment according to the current specification TJ10-74 (Figure 1): I-I section