| 预应力锚索加固岩体的应力损失分析 |
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| 引用本文： | 丁多文,罗国煜.预应力锚索加固岩体的应力损失分析[J].工程地质学报(英文版),1995,3(1):65-69. |
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| 作者姓名： | 丁多文 罗国煜 |
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| 作者单位： | 1.中国科学院武汉岩土力学所,武汉430071; |
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| 摘 要： | 预应力锚索加固岩体的效果取决于预应力的大小。为了保持岩体长期稳定，必须长期保持有足够的预应力。岩体随时间产生的变形、锚索松驰、腐蚀、结构的不同等因素都将造成锚索预应力损失。这对加固效果带来不良影响。本文着重研究岩体随时间的变形产生的预应力损失。
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| 关 键 词： | 预应力锚固 应力损失 松驰 |
| 收稿时间： | 1993-03-02 |
ANALYSIS ON THE LOAD LOSSES OF PRESTRESSED ROCK CABLLE BOLTS |
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| Ding Duowen,Bai Shiwei.ANALYSIS ON THE LOAD LOSSES OF PRESTRESSED ROCK CABLLE BOLTS[J].Journal of Engineering Geology,1995,3(1):65-69. |
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| Authors: | Ding Duowen Bai Shiwei |
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| Institution: | 1.Institute of Rock and Soil Mechanics,Academia Sinica,Wuhan 430071;2.Nanjing Universiy, Nanjing 210008 |
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| Abstract: | The enfored effect of the prestressed cable bolts is determined by the value of prestress. The loads supplied by the cable bolts must be sufficient so that at all times the stability of rock mass is retained. The load losses of the cable bolts are produced by the deformation of rock mass depending on time,corrosion and different kinds of structures etc. These porduce the bad effect of enforcement.The paper mainly study the load losses produced by the deformation of rock mass depending on time. The load losses of the cable bolts can be found by.According to the visco-elastic properties of rock mass tf and at are established. Finally.the effect of the free and anchored length on decreasing the load losses is discussed. |
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| Keywords: | Prestress anchoring Stress losses Relaxation |
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