| CFG桩复合地基动力特性和时程响应影响因素分析 |
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| 引用本文： | 王维玉,赵拓,丁继辉.CFG桩复合地基动力特性和时程响应影响因素分析[J].岩土工程学报,2010(Z2). |
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| 作者姓名： | 王维玉 赵拓 丁继辉 |
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| 作者单位： | 河北省建筑科学研究院;河北建研科技有限公司;河北大学建筑工程学院; |
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| 基金项目： | 河北省建设厅项目(2007-135) |
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| 摘 要： | 通过现场试验对天然地基和CFG桩复合地基动力特性和时程响应进行了研究。分析了天然地基和CFG桩复合地基在空载情况下一阶频率变化规律。单桩复合地基和九桩复合地基时,分别在静载和爆破情况下,对CFG桩复合地基动力特性和时程响应进行了分析。研究了爆破激振作用下,单桩复合地基和九桩复合地基水平方向位移的变化规律。分析了CFG桩在不同荷载条件下一阶频率的变化规律;在相同爆破激振条件下,峰值加速度的规律。为今后探讨动力荷载作用下CFG复合地基的承载力和变形特性提供了研究基础。
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| 关 键 词： | CFG桩 频率 峰值加速度 动力特性 爆破激振 |
Influencing factors of dynamic characteristics and response of cement-fly ash-gravel pile composite foundation |
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| WANG Wei-yu,ZHAO Tuo,DING Ji-hui.Influencing factors of dynamic characteristics and response of cement-fly ash-gravel pile composite foundation[J].Chinese Journal of Geotechnical Engineering,2010(Z2). |
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| Authors: | WANG Wei-yu ZHAO Tuo DING Ji-hui |
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| Affiliation: | WANG Wei-yu1,ZHAO Tuo1,DING Ji-hui2 (1.Hebei Academy of Building Research,Shijiazhuang 050000,China,2.Hebei Building Research technology Co.,Ltd.,Shijiazhuang 050021,3.College of Civil Engineering,Hebei University,Baoding 071002,China) |
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| Abstract: | Dynamic characteristics of the natural foundation and cement-fly ash-gravel pile composite foundation by field tests are studied.The rules of the first-frequency variation of the natural foundation and cement-fly ash-gravel pile composite foundation under the no-load case,the dynamic characteristics and dynamic response of the natural foundation and cement-fly ash-gravel pile composite foundation are analyzed.Dynamic characteristics and dynamic response of the nine-pile composite foundation are studied resp... |
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| Keywords: | cement-fly ash-gravel pile frequency peak acceleration dynamic characteristic blasting vibration |
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