| 微型桩基动力响应的影响参数分析 |
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| 引用本文： | 黄福云,林友炜,刘名琦,庄一舟,程俊峰,徐亮.微型桩基动力响应的影响参数分析[J].铁道建筑,2019(6):33-37. |
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| 作者姓名： | 黄福云 林友炜 刘名琦 庄一舟 程俊峰 徐亮 |
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| 作者单位： | 福州大学土木工程学院;重庆大学土木工程学院 |
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| 基金项目： | 国家自然科学基金(51278126,51578161) |
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| 摘 要： | 运用ABAQUS软件建立了微型桩基土体系的有限元模型,并以微型桩基动力响应特性振动台试验数据校准该模型,研究桩身尺寸、桩周土类型等参数对微型桩基动力响应的影响规律。结果表明:较大的桩径会导致桩底产生显著的弯矩;桩径越大,动力变形能力越弱;桩径越小,表层土反力增长趋势越快;在砂性土条件下影响微型桩基动力响应的主要因素是土的抗压模量,而在黏性土条件下是黏聚力。
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| 关 键 词： | 桥梁桩基 动力响应特性 有限元分析 微型桩基 土体系 桩身尺寸 桩周土 |
Analysis of Factors Influencing Dynamic Response Characteristics of Micro-pile |
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| HUANG Fuyun,LIN Youwei,LIU Mingqi,ZHUANG Yizhou,CHENG Junfeng,XU Liang.Analysis of Factors Influencing Dynamic Response Characteristics of Micro-pile[J].Railway Engineering,2019(6):33-37. |
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| Authors: | HUANG Fuyun LIN Youwei LIU Mingqi ZHUANG Yizhou CHENG Junfeng XU Liang |
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| Institution: | (College of Civil Engineering,Fuzhou University,Fuzhou Fujian 350108,China;College of Civil Engineering,Chongqing University,Chongqing 401331,China) |
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| Abstract: | A finite element model of the micro pile and soil system was established using ABAQUS and it was calibrated by the shaking table test data of dynamic response characteristics of micro pile.The influences of pile dimension and soil around pile on the dynamic response of the micro pile were studied.The results show that larger pile diameter leads to greater moment at the pile bottom.As the pile diameter increases the dynamic deformation capacity is weakened.And the smaller the pile diameter is the faster the soil resistance at the surface grows.The main factor that affects the dynamic response of the micro pile in sandy soil is the compressive modulus of soil and the main influence factor in clay is the cohesion force. |
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| Keywords: | Bridge pile Dynamic response characteristics Finite element analysis Micro-pile and soil system Dimension of pile Soil around pile |
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