| Computing of the Anchor by the Method of Three-Dimension Point-Radiate Infinite Elements |
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| 作者姓名： | 王艳芬 王元汉 谢洪阳 |
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| 作者单位： | School of Civil Engineering and Mechanics Huazhong University of Science and Technology，School of Civil Engineering and Mechanics Huazhong University of Science and Technology，School of Civil Engineering and Mechanics Huazhong University of Science and Technology，Wuhan 430074 China，Wuhan 430074 China，Wuhan 430074 China |
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| 摘 要： | On the basis of the one-dimension infinite element theory, the coordinate translation and shape function of 3D point-radiate 8-node and 4-node infinite elements are derived. They are coupled with 20-node and 8-node finite elements to compute the compression distortion of the prestressed an- chorage segment. The results indicate that when the prestressed force acts on the anchorage head and segment, the stresses and the displacements in the rock around the anchorage head and segment con- centrate on the zone center with the anchor axis, and they decrease with exponential forms. Therefore, the stresses and the displacement spindles are formed. The calculating results of the infinite element are close to the theoretical results. This indicates the method is right. This article introduces a new way to study the mechanism of prestressed anchors. The obtained results have an important role in the re- search of the anchor mechanism and engineering application.
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| 关 键 词： | 预应力混凝土锚 三维点发射无限元 形状函数 有限元法 |
| 收稿时间： | 19 January 2007 |
| 修稿时间： | 2007-01-192007-03-20 |
Computing of the Anchor by the Method of Three-Dimension Point-Radiate Infinite Elements |
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| Wang Yanfen,Wang Yuanhan,Xie Hongyang.Computing of the Anchor by the Method of Three-Dimension Point-Radiate Infinite Elements[J].Journal of China University of Geosciences,2007,18(2):185-190. |
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| Authors: | Wang Yanfen Wang Yuanhan Xie Hongyang |
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| Institution: | School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | On the basis of the one-dimension infinite element theory, the coordinate translation and shape function of 3D point-radiate 8-node and 4-node infinite elements are derived. They are coupled with 20-node and 8-node finite elements to compute the compression distortion of the prestressed an- chorage segment. The results indicate that when the prestressed force acts on the anchorage head and segment, the stresses and the displacements in the rock around the anchorage head and segment con- centrate on the zone center with the anchor axis, and they decrease with exponential forms. Therefore, the stresses and the displacement spindles are formed. The calculating results of the infinite element are close to the theoretical results. This indicates the method is right. This article introduces a new way to study the mechanism of prestressed anchors. The obtained results have an important role in the re- search of the anchor mechanism and engineering application. |
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| Keywords: | infinite element prestressed anchor couple finite element |
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