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| 静压桩承载力时效性的模拟计算 | |
| 引用本文： | 刘俊伟,张明义,谢建,于秀霞,李瑞军. 静压桩承载力时效性的模拟计算[J]. 工业建筑, 2010, 40(1) |
| 作者姓名： | 刘俊伟 张明义 谢建 于秀霞 李瑞军 |
| 作者单位： | 1. 浙江大学软弱土与环境土工教育部重点实验室,杭州,310058 2. 青岛理工大学,山东青岛,266033 3. 济宁市建设学校,山东济宁,272000 4. 青岛万合建筑设计有限公司,山东青岛,266520 5. 河北建筑工程学院,河北张家口,075024 |
| 基金项目： | 国家自然科学基金资助项目(50678086) |
| 摘 要： | 静压桩承载力的提高归因于桩周土的固结、触变恢复和土壳效应,其中固结作用是主要的。从超静孔隙水压力消散和有效应力的增加两方面着手,对桩承载力的增长规律进行分析,利用球孔扩张理论、源-源假设理论以及Henkel公式,推导出沉桩后桩周土应力增量的表达式,并通过求解超静孔隙水压力与时间的关系式,得出任意时刻超静孔隙水压力的表达式,进而提出饱和土中静压桩承载力时效性的模拟计算式。通过与试验结果对比发现,预测结果随休止期的延长而提高。 |
| 关 键 词： | 静压桩 时间效应 超孔隙水压力 消散 |
COMPUTATIONAL SIMULATION OF TIME-EFFECT ON BEARING CAPACITY OF JACKED PILE |
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| Liu Junwei,Zhang Mingyi,Xie Jian,Yu Xiuxia,Li Ruijun. COMPUTATIONAL SIMULATION OF TIME-EFFECT ON BEARING CAPACITY OF JACKED PILE[J]. Industrial Construction, 2010, 40(1) | |
| Authors: | Liu Junwei Zhang Mingyi Xie Jian Yu Xiuxia Li Ruijun |
| Affiliation: | 1.Key Laboratory of Soft Soils and Geoenvironment Engineering of Ministry of Education;Zhejiang University;Hangzhou 310058;China;2.Qingdao Technological University;Qingdao 266033;3.Jining Construction School;Jining 272000;4.Qingdao Institute of Architectural Design Co.Ltd;Qingdao 266520;5.Hebei Institute of Architecture Civil Engineering;Zhangjiakou 075024;China |
| Abstract: | The improvement of bearing capacity dependeds on three aspects of soil consolidation,disturb-restore property and shell-effect.The effect of soil consolidation is most important,so the law of time-effect is studied from this aspects of pore pressure dissipation and effective stress increase.By using the theory of spherical cavity expansion,imaging method and formula Henkel,the expression of stress increase after installation is deduced and the expression of pore pressure at any time by computing the equatio... |
| Keywords: | jacked pile time effect pore pressure dissipation |
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