| 循环荷载作用下碎石桩加固液化地基试验研究 |
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| 引用本文： | 靳建军,张鸿儒,黄春霞,袁正辉. 循环荷载作用下碎石桩加固液化地基试验研究[J]. 北京交通大学学报(自然科学版), 2008, 32(4) |
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| 作者姓名： | 靳建军 张鸿儒 黄春霞 袁正辉 |
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| 作者单位： | 中建国际建设公司,北京,100026;北京交通大学土木建筑工程学院,北京,100044;北京交通大学土木建筑工程学院,北京,100044;南京工业大学土木工程学院,江苏南京,210009 |
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| 摘 要： | 应用简易振动台和叠层剪切变形模型箱,进行了循环荷载作用下碎石桩加固液化地基试验研究,试验分析了碎石桩的加固效应,并着重分析了碎石桩的排水效应.复合地基模型采用三角形及矩形两种方案加固细砂土液化地基,试验结果表明:无论是矩形加固方案还是三角形加固方案,碎石桩均有效地防止了地基液化,并且激振结束后,碎石桩加速了孔隙水压力的消散.
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| 关 键 词： | 地基 循环荷载 碎石桩 孔隙水压消散 |
Experimental Study on Liquefiable Foundation Improved by Stone Columns Under Cyclic Loading |
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| JIN Jianjun,ZHANG Hongru,HUANG Chunxia,YUAN Zhenghui. Experimental Study on Liquefiable Foundation Improved by Stone Columns Under Cyclic Loading[J]. JOURNAL OF BEIJING JIAOTONG UNIVERSITY, 2008, 32(4) |
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| Authors: | JIN Jianjun ZHANG Hongru HUANG Chunxia YUAN Zhenghui |
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| Abstract: | Based on the development of simple shaking table and laminar shear box,stone columns composite foundation shaking table tests are performed under cyclic loading.And,especially,the drainage effect of stone columns is analyzed.The test results show that both the rectangular reinforcement project and the triangular one can effectively prevent sand liquefaction,and the stone columns can accelerate the dissipation of pore water pressure at the end of excitation. |
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| Keywords: | foundations cyclic loading stone columns composite foundation pore water pressure dissipation |
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