| 岩质边坡锚杆设计计算方法分析 |
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| 引用本文： | 唐秋元,赵尚毅,郑颖人,周峰,施毅.岩质边坡锚杆设计计算方法分析[J].地下空间与工程学报,2010,6(6). |
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| 作者姓名： | 唐秋元 赵尚毅 郑颖人 周峰 施毅 |
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| 作者单位： | 中煤重庆设计研究院;解放军后勤工程学院建筑系; |
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| 摘 要： | 结合岩质边坡工程实例,对岩质边坡支护设计中的锚杆轴向拉力设计方法进行了分析和评价。通过对比分析发现:采用极限平衡法、强度折减法、等效内摩擦角法、二维数值分析计算法等方法的设计计算结果偏大,三维数值分析计算法计算结果比较可靠,符合工程实际。侧向岩石压力计算方法与剩余下滑力法的计算结果与数值分析计算法基本一致。在侧向压力接近于零时,建筑边坡支护技术规范采用的侧向岩石压力计算方法计算结果存在安全隐患。在这种情况下,建议采用强度折减法进行锚杆拉力的设计计算。锚杆轴力并非均匀分布,对边坡顶部、底部锚杆应予以加强。在施工阶段稳定性较好的边坡,可按正作法施工,充分发挥边坡的自稳能力,以减小锚杆轴力,可优化设计。
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| 关 键 词： | 岩石边坡 侧向岩石压力 锚杆拉力 计算方法 强度折减法 |
Analysis of Design and Calculation Method for the Anchors in Rock Slope |
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| Tang Qiuyuan,Zhao Shangyi,Zheng Yingren,Zhou Feng,Shi Yi.Analysis of Design and Calculation Method for the Anchors in Rock Slope[J].Chinese Journal of Underground Space and Engineering,2010,6(6). |
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| Authors: | Tang Qiuyuan Zhao Shangyi Zheng Yingren Zhou Feng Shi Yi |
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| Affiliation: | Tang Qiuyuan1,Zhao Shangyi2,Zheng Yingren2,Zhou Feng1,Shi Yi1(1.Chongqing Research & Design Institute of Sino-Coal International Engineering Group,Chongqing 400016,China,2.Department of Civil Engineering,Logistical Engineering University,Chongqing 400041,China) |
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| Abstract: | Combined with rock slope engineering examples,the analysis of the calculation methods for anchors axial force in rock slope was carried out in different ways.The results show that the calculated values of bolt axial force by limit equilibrium method,the strength reduction method,equivalent internal friction angle method,2-D numerical analysis method are relatively large.The calculated values by 3-D numerical analysis method are reliable.It is consistent with the result from actual slope.The calculated value... |
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| Keywords: | rock slope lateral rock pressure anchors axial force design calculation method strength reduction method |
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