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《岩土工程学报》编辑部:下面对地基基础规范TJ7-74提出两点意见,这可能有一些参考价值。1.第41条关于压缩层厚度的规定,是存在着问题的,主要有下列三个方面。首先是,在压缩层深度Z_n处向上取1m范围内的变形值(即地基压缩量)应不大于整个压缩层范围内的变形值的2.5％。这就是说,对于均匀的地基土,压缩模量E_s为常量时,则如图1所示,1m范围内即阴
Journal of Geotechnical Engineering, China: The following comments on the basic foundation code TJ7-74 suggest that this may have some reference value. 1. Article 41 on the thickness of the compression layer is a problem, mainly in the following three aspects. The first is that the deformation value (ie, the ground compression amount) within a range of 1 m upward at the compression layer depth Z_n should not be greater than 2.5% of the deformation value in the entire compression layer range. This means that for a homogeneous foundation soil, the compressive modulus E_s is constant, as shown in Fig. 1, within 1m.