[1]张思峰,李艳梅,韩锐,等.基于数字图像变形量测技术的岩土锚固效应[J].山东建筑大学学报,2010,(03):269-273.
 ZHANG Si-feng,LI Yan-mei,HAN Rui,et al.Model testing study on geotechnical anchoring effect based on digital photography deformation measure technique[J].Journal of Shandong jianzhu university,2010,(03):269-273.
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基于数字图像变形量测技术的岩土锚固效应()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2010年03期
页码:
269-273
栏目:
研究论文
出版日期:
2010-06-15

文章信息/Info

Title:
Model testing study on geotechnical anchoring effect based on digital photography deformation measure technique
作者:
张思峰1李艳梅2韩锐1张海忠3
1. 山东建筑大学 土木工程学院,山东 济南 250101; 2.山东省环境保护科学研究设计院,山东 济南 250013; 3. 山东高速公路集团 泰安分公司,山东 泰安 271000
Author(s):
ZHANG Si-feng1 LI Yan-mei2 HAN Rui1 et al.
1. School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;2. Shandong Academy of Environmental Science, Jinan 250013,China;
3. Taian Branch , Shandong Highway Corporation, Taian 271000, China
关键词:
岩土锚固数字图像变形量测技术模型试验锚固效应
Keywords:
geotechnical anchorage digital photography deformation measure technique model test anchor effect
分类号:
U416.14
文献标志码:
A
摘要:
对岩土锚固机理的分析很大程度上依赖于材料细观层面力学特性的研究。通过室内模型试验及数字图像变形量测技术对岩土锚固结构在分级张拉荷载作用下的全断面位移及破坏特性进行了深入研究,从细观角度分析了单锚、群锚及不同锚间距工况下内锚固段岩土体的位移发展机理及破坏模式。试验结果表明:荷载作用下杆体周围岩土体位移呈以锚杆轴向为渐近线的指数形式分布,按其变形模式可划分为三个区域,而群锚作用使得中部拉伸区得以加强,锚间距足够小时该区域出现群锚效应的“单锚化”;而周围岩土体的破坏以一近似锥体的形式发生。
Abstract:
The Study of the mechanism of geotechnical anchorage depends on the research of microscopic mechanics characteristic of material to a great extent. The indoor model tests and the digital photography deformation measure technique are introduced to analyze the whole section characteristics of displacement and failure in the prestressed anchorage structure under grading tensile load and the development mechanism of microscopic displacement and the failure mechanism of interior bond section are studied under different cases such as single anchor, group anchor and different anchor distance from micro-view. The results indicate that the displacement of adjacent soil presents exponential distribution with bolt axial as asymptote; the anchorage section can be divided into three zones according to the difference of deformation mode,but the stretch zone is strengthened under the effect of group anchor; If the distance of group anchor is small enough, the stretch zone will appear “single anchor tendency” of group anchor effcet; the failure form of adjacent soil presents approximate cone-shaped.
更新日期/Last Update: 2010-08-04