Proposal of determination method of soil parameters for coral gravel soils -interaction between skeletal structure of coral gravels and silty soil matrix

珊瑚砾石土是粉质基质与指珊瑚砾石组成的复合土。本研究通过对珊瑚碎石体积百分比中不同比例珊瑚碎石土进行三轴剪切试验，考察珊瑚碎石骨架结构对其剪切性能的影响。此外，还对不同粒径分布的原状珊瑚砾石土样品进行了三轴剪切试验，以寻找与骨架结构相关的剪切行为的控制参数。

Coral gravel soil is a composite soil consisted of silty matrix and finger-coral gravels. In this study, a series of triaxial shear tests for coral gravel soils with different proportion in volumetric percentage of coral gravels were conducted to examine the influence of skeletal structure of coral gravels on the shearing behavior. In addition, another series of triaxial shear tests were conducted for undisturbed coral gravel soil samples with various grain-size distributions to find a governing parameter for the shearing behavior associated with the skeletal structure.