| 锚杆荷载-位移曲线的指数函数模型研究 |
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| 引用本文： | 应志民,张洁,尚岳全.锚杆荷载-位移曲线的指数函数模型研究[J].岩土力学,2005,26(8):1331-1334. |
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| 作者姓名： | 应志民 张洁 尚岳全 |
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| 作者单位： | 浙江大学,建筑工程学院防灾工程所,杭州,310027 |
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| 摘 要： | 利用现场抗拔试验测取锚杆荷载与锚杆位移的关系曲线(P-S曲线),确定锚杆的极限荷载标准值,必须进行破坏性试验。结合锚杆抗拔试验数据,开展锚杆P-S曲线的数学模型研究,探讨了双曲线模型和指数模型模拟锚杆P-S曲线的效果。结果表明,指数模型能较好地模拟锚杆P-S曲线,其对极限承载力的预测也符合实际。
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| 关 键 词： | 锚杆 极限承载力 双曲线模型 指数模型 |
| 文章编号： | 1000-7598-(2005)08-1331-04 |
| 收稿时间： | 2004-03-08 |
| 修稿时间： | 2004年3月8日 |
Exponential model for simulating load-displacement curve of anchor rod |
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| YING Zhi-min,ZHANG Jie,SHANG Yue-quan.Exponential model for simulating load-displacement curve of anchor rod[J].Rock and Soil Mechanics,2005,26(8):1331-1334. |
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| Authors: | YING Zhi-min ZHANG Jie SHANG Yue-quan |
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| Institution: | Institute of Disaster Prevention, College of Civil Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Making use of the load and displacement curve of anchor rod (shorted for P-S curve) acquired in the field pull-out tests, we can make sure the ultimate bearing capacity of anchor rod; but we must proceed destructiveness experiment. By developing the mathematical model research of the P-S curve of anchor rod, the hyperbolic model and exponential model that predict the ultimate bearing capacity of anchor rod have been contrasted and analyzed referring to the data of pull-out tests of anchor rod; it is shown that the exponential model is better suited for simulating the P-S curve of anchor rod and predicting ultimate bearing capacity of anchor rod. |
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| Keywords: | anchor rod ultimate bearing capacity hyperbolic model exponential model |
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