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| 基于三维土拱效应的预应力锚拉桩锚头间距确定 | |
| 引用本文： | 李成芳,叶晓明,熊启东,吴德伦.基于三维土拱效应的预应力锚拉桩锚头间距确定[J].岩土力学,2011,32(3):825-830. |
| 作者姓名： | 李成芳 叶晓明 熊启东 吴德伦 |
| 作者单位： | 1. 重庆大学土木工程学院,重庆,400010;重庆市建筑科学研究院,重庆,400015 2. 重庆大学土木工程学院,重庆,400010 3. 重庆市建筑科学研究院,重庆,400015 |
| 摘 要： | 讨论了传统预应力锚拉桩支护结构荷载传递路径存在的不足,根据其受力特性,首次提出了基于三维土拱效应的力学计算模型,并对该模型的正确性进行了验证。分析了土拱的形状、土拱的拱高,进而提出了该模型的数学表达式。同时对三维土拱的形成条件进行了论证,建立了形成土拱的静力平衡条件及土的强度条件,在此基础上确立了锚头间距的控制方程,分析了抗剪强度参数c、φ及桩板后土压力q的对锚头间距的影响。最后,将上述分析成果应用于一工程案例,节约了工程造价效果。 |
| 关 键 词： | 预应力锚拉桩 拱高 锚头间距 三维土拱 |
| 收稿时间： | 2010-02-20 |
Determination of suitable anchorhead spacing of prestressed anchor pile based on three-dimensional soil arching |
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| LI Cheng-fang,YE Xiao-ming,XIONG Qi-dong,WU De-lun.Determination of suitable anchorhead spacing of prestressed anchor pile based on three-dimensional soil arching[J].Rock and Soil Mechanics,2011,32(3):825-830. | |
| Authors: | LI Cheng-fang YE Xiao-ming XIONG Qi-dong WU De-lun |
| Institution: | 1.College of Civil Engineering, Chongqing University, Chongqing 400010, China; 2.Chongqing Institute of Building Research, Chongqing 400015, China |
| Abstract: | The existing problem of load transmission path of traditional prestressed anchor piles is discussed;and a mechanical calculation model is first proposed based on three-dimensional soil arching effect by its mechanics property;and the correctness of the model is verified.Then the soil arch shape and arch rise are analyzed;and further the mathematical expression of the model is presented.Meanwhile,three-dimensional soil arch formation conditions are demonstrated;static equilibrium and the strength of the cond... |
| Keywords: | prestressed anchor pile arch rise anchorhead spacing three-dimensional soil arching |
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