武昌地区含粘性土粉砂承载力探讨

Discussion on bearing capacity of clayey silty sand in Wuchang District

以武昌某高层建筑群岩土工程勘察为例,采用规范查表、理论公式计算、现场载荷试验等方法,并结合物理力学指标特征对含粘性土粉砂的承载力进行分析,结果表明:武昌地区含粘性土粉砂是一种有别于一般粉砂、粉土和粘性土的混合土,在工程性质上,它更接近于粘性土而非粉砂。含粘性土粉砂承载力的确定方法应以现场载荷试验和理论公式计算为主,且计算结果与载荷试验结果应具可比性。

In light of an investigation of geotechnical engineering for high-rise architectural complex in Wuhan, the clayey silty sand is recognized as a kind of mixed soil differing from general silty sand, silt or clay and is more close to clay rather than silty sand on engineering properties, based upon an analyzing results of consulting table of bearing capacity in code, theoretical formula calculation, and plate bearing test. Plate bearing test and theoretical formula calculation should be the main methods for determining bearing capacity of clayey silty sand; and the results from theoretical formula calculation must be close to the ones from plate bearing test.