| PHC桩对地基土孔压及侧向位移影响 |
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| 引用本文： | 叶观宝,沈超,邢皓枫,晏青青.PHC桩对地基土孔压及侧向位移影响[J].低温建筑技术,2008,30(5). |
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| 作者姓名： | 叶观宝 沈超 邢皓枫 晏青青 |
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| 作者单位： | 同济大学地下建筑与工程系,上海,200092;同济大学岩土及地下工程教育部重点试验室,上海,200092 |
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| 基金项目： | 上海市重点学科建设项目 |
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| 摘 要： | 以PHC桩加固某电厂地基的现场试验为依托,通过预先埋设的孔压计和测斜仪来观测桩体施工对孔隙水压力变化及侧向位移的影响。观测结果显示PHC桩施工不仅引起地基土超孔隙水压力的变化,而且产生很大的侧向位移。超孔隙水压力的大小随距桩体距离增大而减小,其消散速率与地基土性质和埋置深度有关。桩体施工引起的侧向位移量大小与距桩体距离有关,随着孔压消散,侧向位移在很大程度上得到恢复。
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| 关 键 词： | PHC桩 超孔隙水压力 侧向位移 |
INFLUENCE OF PHC PILE CONSTRUCTION ON THE VARIATION OF PORE PRESSURE AND LATERAL DISPLACEMENT |
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| YE Guan-bao,SHEN Chao,XING Hao-feng,YAN Qing-qing.INFLUENCE OF PHC PILE CONSTRUCTION ON THE VARIATION OF PORE PRESSURE AND LATERAL DISPLACEMENT[J].Low Temperature Architecture Technology,2008,30(5). |
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| Authors: | YE Guan-bao SHEN Chao XING Hao-feng YAN Qing-qing |
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| Affiliation: | YE Guan-bao1,2,SHEN Chao1,XING Hao-feng1,YAN Qing-qing1,2 (1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China,2.Key Laboratory of Geotechnical , Underground Engineering of Ministry of Education,China) |
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| Abstract: | This paper is based on field trials of a power plant foundation reinforced by PHC pile,where the influence of pile construction to pore water pressure changes and lateral displacement were observed by pre-laying piezometers and inclinometers.The results show that PHC pile construction not only cause excess pore water pressure changes,but also make great lateral displacement;the excess pore water pressure value decreases with the increase of the distance to pile,and its dissipation rate is related to subsoil... |
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| Keywords: | PHC pile excess pore water pressure lateral displacement |
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