| 非均质软土路基极限填筑高度研究 |
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| 引用本文： | 亓宾,江娟,刁鹏. 非均质软土路基极限填筑高度研究[J]. 江西科学, 2009, 27(2) |
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| 作者姓名： | 亓宾 江娟 刁鹏 |
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| 作者单位： | 同济大学土木工程学院地下建筑系,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;中航勘察设计研究院,北京,100098 |
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| 摘 要： | 基于软土路堤的失稳机理,探讨了线路工程穿越软土区时,成层软土路基的极限填高计算方法.依托莱线路工程,计算路堤和路基的整体稳定性,通过填高与稳定性的横向和纵向分析,得出路基的极限填筑高度,并结合数值法计算探讨填高引起的路堤和路基内位移分布.研究表明:当填筑高度接近极限高度时,对称极限荷载作用下,路基发生塑性变形,破坏从路基中线带附近向路基外侧滑出,破坏形式与现有的软土现场堆载破坏实例相近.可见依据整体稳定性确定成层软土的极限填筑高度是可行的.
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| 关 键 词： | 成层软土 路基稳定性 极限填高 数值计算 路堤中线带 |
Study on Calculation of Critical Height of Heterogeneous Soft Soil Foundation |
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| QI Bin,JIANG Juan,DIAO Peng. Study on Calculation of Critical Height of Heterogeneous Soft Soil Foundation[J]. Jiangxi Science, 2009, 27(2) |
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| Authors: | QI Bin JIANG Juan DIAO Peng |
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| Affiliation: | 1.Department of Geotechnical Engineering;Tongji University;Shanghai 200092 PRC;2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education;3.China Aviation Investigation Design and Research Institute;Beijing 100098 PRC |
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| Abstract: | Based on the analysis the mechanics destabilization of embankment and soft soil foundation,calculation method of the critical height of heterogeneous soft soil foundation is studied,when the line engineering passes the soft soil area.After the whole stability of embankment and foundation is calculated,comparing the relationship of longitudinal and lateral of filled-up height and stability coefficient,the critical height of heterogeneous soft soil foundation is obtained.Numerical analyses provide the distrib... |
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| Keywords: | Heterogeneous soft soil foundation Stability of embankment Critical height Numerical calculation Middle line of embankment |
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