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本文按我国地基规范(TJ7—74)关于沉降计算的有关规定,推导出一次计算沉降量的公式系数及有关图表,并以最后形式给出均质土中常见基础沉降量。从而不经过一般沉降量的计算程序而能一次算得沉降量,这就使沉降量计算极为简单方便。既使不熟悉沉降计算方法,利用本文公式图表,也能一次算得基础沉降量。对二层地基,本文推导出压缩层深度公式,从而可以一次求得地基沉降量,不必反复进行试算也不必核算压缩层深度。文中分别以方形、条形、矩形等4种基础沉降计算实例,证实按本文公式、图表计算沉降量,均能满足规范要求。
In this paper, according to the relevant provisions of China’s foundation code (TJ7-74) on settlement calculation, the formula coefficients and relevant charts for calculating settlement are calculated once, and the common foundation settlement in homogeneous soil is given in the final form. The settlement amount can be calculated once without going through the general settlement calculation procedure, which makes the calculation of the settlement amount extremely simple and convenient. Even if you are unfamiliar with the settlement calculation method, using the formula chart of this paper, you can also calculate the basic settlement amount at one time. For the two-story foundation, the depth formula of the compression layer is deduced in this paper, so that the settlement of the foundation can be obtained once, without having to repeat the trial calculation or accounting for the depth of the compression layer. In this paper, four basic settlement calculation examples, such as square, bar, and rectangle, were used to verify that the calculation of the settlement according to the formulas and charts in this paper can meet the specification requirements.