砂质边坡安全性与快速评估方法研究

陈骏瑜; 李咸亨

砂质边坡安全性与快速评估方法研究 English Version

台湾科技大学营建工程系，台湾台北 10672

详细信息

作者简介:
陈骏瑜(1974– )，男，台湾台中人，硕士，主要从事边坡安全评估研究。

中图分类号: TU43
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- 文章访问数: 1058
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出版历程
- 收稿日期: 2011-07-19
- 发布日期: 2012-08-19

Safety factor and rapid assessment method for sandy slopes

(Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei 10672, China)

摘要

摘要: 边坡内地下水位之变化是边坡安全的重要参数，但其对边坡稳定安全系数之影响却鲜少被人深入探讨。而现今监测仪器管理值大多仅以经验值代表边坡潜在危险性，且未明确指出对应的变位大小。因此，结合数值分析法和极限平衡法的优点及特性，详细分析砂质边坡的地下水位、应力、应变与安全系数之关系，探讨地下水位对砂质边坡稳定性的影响。研究成果获知各种内摩擦角不同的土壤，随着水位升高时，安全性也变化的趋势，且可以正规化参数与表达之。因此，进一步建立一个合理且可快速使用的边坡安全评估图表，以便用于砂质边坡快速安全评估，且亦可用于缺乏详细数据的现地边坡之快速安全评估，解决盲从检测之虞。
- 边坡监测指标 /
- 临界地下水位 /
- 安全系数 /
- 坡趾水平位移
Abstract: The variation of groundwater levels in a slope is usually used as the major parameter for the monitoring of slope stability. But its influence on the safety factor of a slope is seldom examined. Most indices used in commercial slope stability monitoring devices only show potential dangerous situations based upon experience without any corresponding displacement information. In this study, we use both numerical analysis method and limit equilibrium method to analyze the relationship among groundwater levels, stress, strain, and safety factor of sandy slopes. So, the influence of groundwater water levels on the sandy slope stabilities can be evaluated. It is found in different internal friction angles of sands that the safety factors of the slope will drop down rapidly when the critical water level is approached. This conclusion can be presented with two normalized parameters of FS/tan? and Hw/H. Therefore two rapid assessment charts for evaluating the stability of sandy slopes are established. The method recommended in this study can also be used to evaluate the safety of real slopes which you don’t have detailed influence factors.
- slope monitoring index /
- critical groundwater level /
- safety factor /
- horizontal displacement of slope toe

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参考文献(18)

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文章访问数: 1058
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PDF下载量: 537
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砂质边坡安全性与快速评估方法研究 English Version

作者简介: 陈骏瑜(1974– )，男，台湾台中人，硕士，主要从事边坡安全评估研究。

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出版历程

Safety factor and rapid assessment method for sandy slopes

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出版历程

目录

作者简介:
陈骏瑜(1974– )，男，台湾台中人，硕士，主要从事边坡安全评估研究。