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以往基础地基强度计算均采用如下公式计算:(?)式中符号详见《地基基础设计规范》(TJ7-74)。原有计算方法没有考虑基础置于土中后基础受到土的约束作用。实际上基础置于土中(基坑回填土需夯填密实),与置于地面上的最大区别在于置于地面线以下土中的基础受到土的约束作用,从而可以减少基础本身应力和地基土壤应力。而置于地面上的基础没有这种约束。原有计算方法因没有考虑土
In the past, basic foundation strength calculations were calculated using the following formula: (?) Symbols in the formulae are described in the “Fundamentals for Foundation Design” (TJ7-74). The original calculation method did not consider that the foundation was placed in the soil and the foundation was restrained by the soil. In fact, the foundation is placed in the soil (filling of foundation pits requires compaction), and the biggest difference from the ground is that the foundation placed in the soil below the ground line is constrained by the soil, so that the foundation itself can be reduced in stress and foundation. Soil stress. There is no such constraint on the foundation laid on the ground. The original calculation method did not consider soil