昔格达组地层承载力综合试验研究

Comprehensive Experimental Research on Bearing Capacity of Xigeda Formation

昔格达组地层是西南地区覆盖在早第三系之上,成韵律互层的一套静水河湖相沉积地层。选定三个典型昔格达分布地区开展对比试验研究,进行了一系列原位土工试验,即平板载荷试验、标准贯入试验,以及室内单轴抗压试验和常规土工试验,分析研究不同方法确定西南地区半成岩的昔格达组地层地基承载力特征值之间的关系,结合试验结果提出确定昔格达组地层承载力特征值的范围值,为今后工程建设提供设计依据。

Xigeda Formation is a rhythmic bedding stratum of fluviolacustrine sediment in the southwest covering over ~he Paleogene system. Three typical Xigeda distributed areas are selected for the purpose of comparison, and a series of in-situ soil tests, i. e. plate loading test, standard penetration test, indoor uniaxial compressive test and conventional soil tests, are carried out to confirm the relationship between the Eigen values of bearing capacity of semi-rock Xigeda Formation in the southwest area through analysis and study; furthermore, combined with the test results, Eigen value of bearing capacity of Xigeda Formation is proposed offering basis to design of future engineering construction.