中文摘要：

针对中国缺乏高含水率疏浚淤泥不排水强度的有效测试方法的现状，引进了Tan课题组提出的平板贯入剪切试验方法，对分布于中国不同地区的3种疏浚淤泥进行了系列平板贯入剪切试验，分析了加载速率对不排水强度测试结果的影响以及贯入深度随贯入时间的变化规律，完善了平板贯入剪切试验测试方法。基于平板贯入剪切试验数据，分析了疏浚淤泥的不排水强度性状和主要影响因素，导入含水率与液限之比对各种疏浚淤泥的不排水强度进行归一化分析，验证了平板贯入剪切试验测试方法的有效性，为该测试方法应用于中国疏浚淤泥的强度测试奠定了基础。

英文摘要：

The plate penetration test proposed by Tan and his team is introduced to measure the undrained shear strength of dredged clay with high initial water contents. A series of plate penetration tests are performed on three kinds of dredged clay distributed in different areas in China. The effect of loading rate on undrained shear strength and the change law in penetration depth with penetration time are investigated as a supplementary work of the plate penetration test method. In addition, the undrained strength behavior of dredged clay and its main influential factors are investigated. The normalized behavior of undrained shear strength based on plate penetration tests is compared with that based on vane shear and fall-cone tests to verify the effectiveness of plate penetration tests applied on dredged clays with high initial water contents.