| 单向循环荷载作用下饱和砂土中单桩沉降模型试验研究 |
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| 引用本文： | 黄雨,柏炯,周国鸣,黄清.单向循环荷载作用下饱和砂土中单桩沉降模型试验研究[J].岩土工程学报,2009,31(9):1440-1444. |
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| 作者姓名： | 黄雨 柏炯 周国鸣 黄清 |
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| 作者单位： | 同济大学地下建筑与工程系；同济大学岩土及地下工程教育部重点实验室；中船第九设计研究院工程有限公司；中建国际设计顾问有限公司； |
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| 基金项目： | 国家自然科学基金项目(40841014);;上海市重点学科建设项目(B308) |
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| 摘 要： | 通过饱和砂土中模型桩在单向循环荷载比(循环荷载幅值与桩的极限承载力的比值)分别为12.5%,25%,50%三种情况下的沉降试验,研究了模型桩在不同动力循环加载情况下的桩顶累积沉降和动位移幅值随振动次数的变化而改变的规律,拟合了沉降试验曲线的回归方程。对试验结果进行分析后得出:循环荷载比和循环次数是影响饱和砂土中单桩桩顶累积沉降的主要因素。
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| 关 键 词： | 桩 饱和砂土 模型试验 循环荷载 累积沉降 |
Model tests on settlement of a single pile in saturated sand under unilateral cyclic loading |
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| HUANG Yu,BAI Jiong,ZHOU Guoming,HUANG Qing.Model tests on settlement of a single pile in saturated sand under unilateral cyclic loading[J].Chinese Journal of Geotechnical Engineering,2009,31(9):1440-1444. |
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| Authors: | HUANG Yu BAI Jiong ZHOU Guoming HUANG Qing |
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| Affiliation: | 1.Department of Geotechnical Engineering Tongji University Shanghai 200092 China 2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education Tongji University Shanghai 200092 China 3.The Ninth Design Research Institute of CSSC Shanghai 200063 China 4.China Construction Design International Shanghai 200235 China |
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| Abstract: | This paper focuses on the model pile settlements induced by different cyclic loading ratios in saturated sand.The cyclic loading ratio is defined as the ratio of the maximum cyclic loading to the ultimate bearing capacity of the pile.Through three kinds of tests on model piles with the cyclic loading ratio of 12.5%,25% and 50%,the cumulative settlements of the model piles are studied in saturated sand,and it is investigated that how the dynamic displacements change with cyclic numbers.Then the fitting equations of the settlement curves are derived from the test data.The results show that the cyclic loading ratio and cyclic number are the important factors of the cumulative settlement of piles. |
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| Keywords: | pile saturated sand model test cyclic loading cumulative settlement |
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