黑龙江省伊春市圆砾层地基承载力试验研究

Experimental Study on Foundation Bearing Capacity of Round Gravel Layer in Yichun City of Heilongjiang Province

利用浅层平板载荷试验和圆锥动力触探原位试验方法,对黑龙江省伊春市圆砾层进行地基承载力测试,获取了地基承载力特征值fak、变形模量E0与修正后的锤击数N63.5'的相关系数及经验公式。分析结果显示,研究区圆砾层变形量小,构造稳定,负重力强,地基承载力超过GB 50007—2011《建筑地基基础设计规范》标准规定值的30%以上,可为该地区建筑地基基础设计提供参考。

The in-situ test methods of shallow tectonic loading and conical dynamic penetration are used to test the bearing capacity of round gravel layer in Yichun City of Heilongjiang Province. The eigenvalue of bearing capacity of foundationf.k, the deformation modulus Eo, the corrected hammer number N63.5 ＇ and related empirical formula are obtained. The results show that the deformation of round gravel layer in study area is small, the structure is stable, and the bearing capacity of foundation is stronger more than 30% of predetermined value of GB 50007-2011 Building Foundation Design Code. These research results can provide references for the design of building foundation in Yichun region.