| 无连接挡板高填方路堤薄壁挡土墙土压力模型试验研究 |
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| 引用本文： | 窦斌,高辉,杨凯华.无连接挡板高填方路堤薄壁挡土墙土压力模型试验研究[J].地球科学进展,2004(Z1). |
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| 作者姓名： | 窦斌 高辉 杨凯华 |
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| 作者单位： | [1]中国地质大学工程学院 [2]中国地质大学工程学院 湖北 武汉 [3]湖北 武汉 |
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| 基金项目： | 中国地质大学(武汉)优秀青年教师资助计划项目(编号:CUGQNL0307)资助 |
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| 摘 要： | 提出了一种新型的互锚薄壁挡土墙,该挡土墙是在传统加筋土墙的基础上发展起来的。以钢筋为拉筋,两侧的挡土墙面板通过拉筋对称连接互锚。通过模型试验测试了该结构挡土墙面板后土压力的分布规律。挡土面板后土压力并不是呈线性分布,也没有表现中间大、两端小的三角形分布或曲线,即在挡土墙的墙底和墙顶土压力接近于0、在挡土墙的中间土压力最大的分布规律,而是在距离挡土墙顶部1/3h以上(h为墙高),挡土墙面板后的土压力分布完全呈线性分布,与朗肯主动土压力理论相似;但是在距离挡土墙顶部1/3h以下位置,挡土墙面板后的土压力随着挡土墙高度的延伸,土压力基本保持不变,近似呈现一条竖线段。结果表明这种挡土墙的承栽能力得到明显加强。
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| 关 键 词： | 高路堤 互锚 薄壁挡土墙 土压力分布 模型试验 |
EARTH PRESSURE MODEL TESTING OF HIGH BACKFILLED ROAD DYKE ON ARCHORING REINFORCED RETAINING WALL |
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| DOU Bin,GAO Hui,YANG Kai-hua.EARTH PRESSURE MODEL TESTING OF HIGH BACKFILLED ROAD DYKE ON ARCHORING REINFORCED RETAINING WALL[J].Advance in Earth Sciences,2004(Z1). |
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| Authors: | DOU Bin GAO Hui YANG Kai-hua |
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| Abstract: | This paper describes a new method of retaining wall construction that combine the reinforced Earth technique with a conventional brick wall. Although this type of construction is based on the original reinforced Earth construction concept it has some important modifications as it uses reinforcing steel bar as reinforcement and has a rigid face, and two face is anchored by reinforcing steel bar. The behavior of reinforcing steel bar reinforced brick faced retaining walls was investigated using model walls which were built backfired and then testing. The study found that the retaining wall Earth pressure is not a line distributing; it means that the law is different to the Rankin and Coulomb Earth pressure laws. It also doesnt like a triangle distributing. The Earth pressure distributing is line distributing from top to 1/3h, and the Earth pressure almost no change from 1/3h to the bottom. The resulted show that short length of reinforcement can significantly increase the load capacity of brick retaining wall. The study found that the Earth pressure of the retaining wall is not a line distributing; it means that the theory is different to the Rankin and Coulomb Earth pressure. |
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| Keywords: | High road dyke Anchoring Thin retaining wall Earth pressure Model test |
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