| Summary: | 碩士 === 國立成功大學 === 土木工程學系 === 106 === In this study, alluvial soils of Chien-Shan Embankment at Tseng-Wen River are collected as samples of test and remolded as separated specimens, also the specimens are divided into three different groups, such as different relative densities, different amount of kaolinite is added and removing all the fine content from the raw soils, each kind of specimen are conducted with cyclic triaxial test in order to yield the cyclic resistance ratio of different soils.
The test results indicate while the relative density of soil of Chien-Shan Embankment increased between 33% and 66%, the cyclic resistance ratio increased with relative density. Also, the behavior of deformation of dense soil differs from loose and medium soils, with the form of cyclic mobility, and the reason of the result is controlled by the stress path.
The test results of removing all the fine content from soils as clean sand yielded the similar consequence as the in-situ soil of the same dry density, the result could be interpreted as the similar skeleton structure of same yields the similar result.
In kaolinite substituted specimens, 10%, 20% and 40% weight of specimen in the same dry density for the test, the in-situ soil with 10% kaolinite yields the lowest cyclic resistance ratio, and the behaviors of deformation and excess pore pressure increase are similar to sandy soil; the in-situ soils with 20% and 40% kaolinite embody with the same behavior with clayey soils.
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