| 循环荷载作用下饱和软粘土应变软化研究 |
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| 引用本文： | 周建,龚晓南.循环荷载作用下饱和软粘土应变软化研究[J].土木工程学报,2000,33(5):75-78. |
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| 作者姓名： | 周建 龚晓南 |
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| 作者单位： | 周建（浙江大学）;龚晓南（浙江大学） |
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| 摘 要： | 通过对杭州市正常固结饱和软粘土进行应力控制的循环三轴试验,从应变的角度出发研究了循环荷载作用下土体的软化情况.通过研究不同循环应力比、不同超固结比、不同频率下轴向周期应变的软化情况分析了土体的软化,同时建立了一个合理反映土体应变软化的数学模型并确定了参数.
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| 关 键 词： | 循环荷载 饱和软粘土 应变软化 数学模型 |
| 修稿时间： | 1999年7月4日 |
STUDY ON STRAIN SOFTEN IN SATURATED SOFT CLAY UNDER CYCLIC LOADING |
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| Zhou Jian,Gong Xiaonan.STUDY ON STRAIN SOFTEN IN SATURATED SOFT CLAY UNDER CYCLIC LOADING[J].China Civil Engineering Journal,2000,33(5):75-78. |
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| Authors: | Zhou Jian Gong Xiaonan |
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| Abstract: | The pore pressure is occurred in the soft clay under cyclic loading, then lead to the degradation of soil strength and the collapse of structure. The soften of a normally consolidated soil under cyclic loading is studied by cyclic triaxial tests with stress-controlled. There are many factors on soil soften. These factors are the cyclic stress ratio, the overconsideration ratio (OCR), and the frequency of cyclic loading. According to test results the degradation index is redefined. A proper math- ematics model reflecting strain soften is Proposed. The Proposed model is verified by the comparison of the result of test with that of the calculation. |
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| Keywords: | cyclic loading saturated soft soil strain soften mathematics model |
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