| 湖区公路拓宽工程处治技术应用分析及监测 |
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| 引用本文： | 何礼彪,金亮星.湖区公路拓宽工程处治技术应用分析及监测[J].铁道科学与工程学报,2009,6(5). |
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| 作者姓名： | 何礼彪 金亮星 |
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| 作者单位： | 中南大学,土木建筑学院,湖南,长沙,410075 |
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| 摘 要： | 结合某湖区公路拓宽工程,通过对路基拓宽工程病害的成因分析,认为新老路基结合部间的不协调变形是路基拓宽工程病害产生的根本原因.基于"变形协调与控制"的处治思想,分析了土工格栅防止路基不均匀沉降的机理,对土工格栅的处治效果进行评价.在具有典型地质条件和较高填方地段布置了监测断面,进行动态监测.监测结果显示,加筋路堤内部的竖向应力随格栅层间距的减小而降低,而水平应力却随之增加;沉降随格栅层间距的减小而减小.研究结果表明,土工格栅处治后拓宽路基变形及新老路基差异变形均很小,为新老路基差异沉降的评价提供了依据.
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| 关 键 词： | 路基拓宽 变形 处治 监测 土工格栅 |
Subgrade treatment techniques and effects for road-widening of lake district |
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| HE Li-biao
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JIN Liang-xing.Subgrade treatment techniques and effects for road-widening of lake district[J].Journal of Railway Science and Engineering,2009,6(5). |
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| Authors: | HE Li-biao JIN Liang-xing |
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| Institution: | HE Li-biao,JIN Liang-xing(School of Civil , Architectural Engineering,Central South University,Changsha 410075,China) |
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| Abstract: | According to the road-widening problems of lake district,based on analysis of distresses in subgrade widening engineerings,the collusion was discussed.Adopting the technical treatment principle of deformation coordinate and control,the treatment techniques of geogrids were analyzed for preventing the differential settlement on subgrade,and the efforts of geogrids was evaluated.Combining construction course of the field,sections was selected with typical geotechnical condition and comparatively high embankme... |
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| Keywords: | road-widening deformation treatment monitoring geogrids |
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