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花岗岩残积土变形模量的取值对广东、福建等地区部分建筑物的沉降分析至关重要。针对现有部分地区花岗岩残积土变形模量取值方法没有考虑土质特性的不足,选取花岗岩残积土天然地基上的载荷试验和标准贯入试验数据,结合统计分析原理,提出了在广东地区按照残积土的三种不同土质分别计算其变形模量E0的分析方法,并考虑了土体固结的影响,与实测沉降结果进行对比分析,给出了新的修正系数。通过对实际工程的计算,验证了此方法的合理性,为国家和地区性规范关于残积土变形模量取值部分的发展提供了参数依据。
The value of the modulus of deformation of granite residual soil is crucial for the settlement analysis of some buildings in Guangdong and Fujian. In view of the lack of consideration of the characteristics of soil properties for the residual deformation modulus of granite residual soil in some existing regions, the loading test and standard penetration test data of natural residual soil of granite residual soil were selected, combined with the principle of statistical analysis, and a residual product was proposed in Guangdong area. The analysis method of soil deformation modulus E0 was calculated for three different soils, and the effect of soil consolidation was taken into account. The results were compared with the measured settlement results and new correction coefficients were given. Through the calculation of the actual project, the rationality of this method is verified, which provides a parameter basis for the development of national and regional norms on the value of the modulus of residual soil deformation modulus.