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在广泛收集实测资料的基础上,提出了根据基础宽度以确定沉降计算深度的经验方程,可用以估算独立基础。根据此经验方程,检验了现行地基规范TJ7—74有关规定,认为对于宽度小于10米的基础,原有的“上算1米”的规定确有缺点。因此,提出了一种适用于各种基础宽度的计算方法,以“上算0.3(1+1nb)米”修正现有的“上算1米”的标准。该法能够避免目前提出的变形比法的缺点,发扬变形比法之长,与实测值也较符合。对于提出的方程,均已制成简单的表格,取用也很方便。
On the basis of extensive collection of measured data, an empirical equation based on the width of the foundation to determine the depth of settlement calculation is proposed and can be used to estimate an independent basis. According to this empirical equation, the relevant regulations of the current foundation code TJ7-74 have been examined. It is considered that for the foundation with a width of less than 10 meters, the original “calculation of 1 meter” does have drawbacks. Therefore, a calculation method suitable for various basic widths is proposed, and the existing “1 meter up” standard is corrected by “up 0.3 (1+1 nb) meters”. This method can avoid the shortcomings of the presently proposed deformation ratio method, promote the length of the deformation ratio method, and is more in line with the measured value. For the proposed equations, simple tables have been made and access is convenient.