| 基于明德林解的土钉内力计算方法 |
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| 引用本文： | 魏焕卫,宋丰波,杨敏,孙剑平. 基于明德林解的土钉内力计算方法[J]. 岩土力学, 2011, 32(Z1): 6-14 |
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| 作者姓名： | 魏焕卫 宋丰波 杨敏 孙剑平 |
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| 作者单位： | 1. 山东建筑大学 土木工程学院，济南 250014；2. 山东电力工程咨询院有限公司，济南 250013；3. 同济大学 地下建筑与工程系，上海 200092 |
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| 摘 要： | 土钉内力计算是土钉墙设计计算的关键指标，通过虚拟开挖应力模拟土钉墙开挖状态，假定面层受力为0，提出了钉土剪力在潜在滑动面两侧沿土钉方向呈双三角形分布的计算模型，推导了钉土剪力和土钉轴力的计算公式。利用Mindlin应变解，得到在虚拟开挖应力和钉土剪力共同作用下潜在滑动面位置土体及土钉端部土体侧向位移，根据钉土剪力分布模型计算得到土钉在潜在滑动面位置的弹性变形。根据钉土剪力在潜在滑动面位置等于0的特点，得到钉土相对位移在潜在滑动面位置为0的结论，结合潜在滑动面位置两侧土钉轴力大小、相等方向相反，可以得到钉土剪应力计算公式中未知系数，从而得到土钉轴力和钉土剪力。通过与法国CEBTP大型试验1号墙实测数据的对比分析，初步验证了基于Mindlin解的土钉内力计算方法的合理性和可行性。
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| 关 键 词： | 侧向土压力 Mindlin解 潜在破裂面 钉土剪力 土钉轴力 |
| 收稿时间： | 2010-11-22 |
Calculation method of inner force of soil nailing based on Mindlin solution |
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| WEI Huan-wei,SONG Feng-bo,YANG Min,SUN Jian-ping. Calculation method of inner force of soil nailing based on Mindlin solution[J]. Rock and Soil Mechanics, 2011, 32(Z1): 6-14 |
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| Authors: | WEI Huan-wei SONG Feng-bo YANG Min SUN Jian-ping |
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| Affiliation: | 1. School of Civil Engineering, Shangdong Jianzhu University, Ji’nan 250014, China; 2. Shandong Electric Power Engineering Consulting Institute Corp., Ltd., Ji’nan 250013, China; 3. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | Inner force of soil nail is a key parameter of soil nailing design.Virtual excavation stress is used to simulate the excavation status of soil nailing.On the basis of the hypothesis that there exists no load on the face of soil nail,a calculation model is presented that the distribution of shear forces between soil and nail is double-triangle.The calculation formulas of axial force and shear force of soil nail are derived.The lateral displacement of soil at potential break surface and the end of nail by the... |
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| Keywords: | lateral soil pressure Mindlin strain solution potential break surface shear force between soil and nail axial force of soil nail |
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