岩石地基上扩展基础的基底反力实测分析

Experimental Study on Sub-grade Reaction of Spreading Foundation on Rock Sub-grade

通过对岩石地基上扩展基础试件现场试验的简介,在现场试验数据的基础上,根据测得的在各级加载下的基底反力数值,绘制出各型试件的基底反力分布曲线,总结出各型试件基底反力分布曲线的规律。并与土质地基上扩展基础的基底反力分布规律进行比较,通过分析差异的原因进一步说明影响岩石地基上扩展基础基底反力分布的内在因素主要为:地基土特性及荷载的差异,可以为扩展基础控制截面内力的计算提供参考依据,并为岩石地基上基础工程的研究和实际应用提供一定的参考价值。

By short introduction of field test for specimens of spreading foundation on rock sub - grade and on the basis of field test data for specimens of spreading foundation on rock sub - grade, the distribution curves of sub - grade reaction at each level of the load are plotted and the rule of the curves for each type of specimen is summarized. By comparison of the results measured in other foundation soils, the major reasons for differences among the different foundation soils in the distribution of sub - grade reaction and the factors which influence the distribution of sub - grade reaction are presented ： the differences in character of the sub - grade and the load. It can provide some reference for calculation of key section＇s internal force and research and practical application in foundation engineering on rock sub- grade.