| 土钉墙变形的实用计算方法 |
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| 作者单位： | 同济大学，山东建筑大学 |
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| 摘 要： | 本文在大量的土钉墙现场实测、模型试验、拉拔试验等资料的基础上,假定土钉轴力沿土钉轴线呈双抛物线形分布、土钉剪应力-位移关系满足理想弹塑性模型以及土钉面层不受力,推导出钉土相对位移、土钉墙坡面侧向变形和被动区土体内沿土钉轴线任意点土体位移的实用计算公式,给出了多根土钉及分步开挖后土钉坡面侧向位移增量的计算方法,讨论了本文提出的土钉变形计算方法中主要参数的计算模式,包括土压力、钉土间剪切变形系数、土钉整体稳定性计算等。通过三个工程的实测资料对本文计算理论进行验证,结果表明了本文土钉墙变形计算理论方法的有效性和适用性。本文所提出的土钉墙变形计算方法可以利用工程实践中大量的土钉抗拔实测资料,比较容易地推算土钉墙开挖后的变形情况,从而为土钉墙变形的预测和控制提供了设计和施工方面的依据和参考。
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| 关 键 词： | 土钉墙 变形计算 数值模拟 现场实测 拉拔试验 |
Calculation Method for Soil Nailing Displacement |
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| Authors: | Wei Huanwei Yang Min Sun Jianping Jia Qiang |
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| Affiliation: | Wei Huanwei1,2 Yang Min1 Sun Jianping 2 Jia Qiang 2 |
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| Abstract: | Based on a large amount of data from model test and field test that includes pullout test, the axial force of soil nail is in a parabolic distribution, the relationship between shear force and displacement can be assumed as an ideal elastic-plastic model, and there exists no load on the face of soil nail. A simplified theoretical formula for soil nailing displacement calculation is obtained. The parameters involved are discussed, including soil pressure pattern, shear displacement coefficient, and method of overall stability calculation. Three examples are used to illustrate the validity of the proposed method. |
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| Keywords: | soil nailing displacement calculation numerical simulation field test pullout test |
| 本文献已被 CNKI 等数据库收录！ |
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