长春硬塑状态老黏性土地基承载力

为提供长春硬塑状态老黏性土可靠的地基承载力依据，探讨适宜的确定地基承载力的方法，采用载荷试验、静力触探试验原位测试和室内土工试验等方法对长春老黏性土进行了测试研究，获取了地基承载力特征值（306~425 kPa）、静力触探锥尖阻力（1.9~3.3 MPa）、天然孔隙比(0.63~0.72)和液性指数(0.02~0.25)等试验数据。通过对试验数据的统计分析，得出地基承载力特征值与静力触探锥尖阻力线性相关，并与天然孔隙比和液性指数线性相关的结论。据此，提出了根据静力触探锥尖阻力计算长春老黏性土地基承载力特征值的经验公式，总结出根据室内土工试验指标确定长春老黏性土地基承载力特征值的数据表。

Foundation Bearing Capacity of Changchun Hard Plastic Old Clay

In order to provide reliable basis for foundation bearing capacity of Changchun hard plastic old clay and to discuss appropriate measures for determining the characteristic value of subsoil bearing capacity, laboratory soil test and in-situ testing methods including loading test and cone penetration test(CPT) are carried out,  and the characteristics value of subsoil bearing capacity (306-425 kPa), the value of CPT(1.9-3.3 MPa), natural void ratio (0.63-0.72) and liquidity index (0.02-0.25) are collected. Based on the test data, there can be found a linear correlation between characteristic value of subsoil bearing capacity and the value of CPT, between characteristic value of subsoil bearing capacity and natural void ratio and between characteristic value of subsoil bearing capacity and liquidity index. Therefore, an empirical formula is presented, which the characteristic value of subsoil bearing capacity can be calculated according to the value of CPT. And then a calculation table about the characteristic value of subsoil bearing capacity of Changchun old clay is summed up according to the laboratory soil test indexes.