利用单剪 SHANSEP 试验方法测定了南海某石油平台场址两种粘性土层的不排水剪切强度。通过对比单剪 SHANSEP试验结果、原位静力触探（CPT）试验结果和三轴不固结不排水（UU）试验结果，表明通过单剪 SHANSEP 试验确定的粘土不排水强度与现场 CPT 解释结果更趋于一致，同时也表明了 SHANSEP 方法适合于中国南海粘性土强度的评价。因此利用单剪 SHANSEP 试验能够克服土样扰动对粘土强度的影响，更加客观评价粘性土的强度，为工程设计提供可靠的数据。%The undrained shear strengths of two types of cohesive soils are tested by SHANSEP method. By comparison with the results of SHANSEP, unconsolidated-undrained (UU) and cone penetration test (CPT) , the results of SHANSEP are consistent with those of CPT and greater than those of UU, which indicate that the SHANSEP method can reduce the effect of disturbance and is suitable for the objective evaluation of offshore cohesive soils from the South China Sea. Therefore, the SHANSEP method is recommended to accurately assess the strength of cohesive soils for the engineering design.
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