| 软质岩中压力型锚索锚固段应力分布特征 |
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| 引用本文： | 卢黎,张永兴,张四平,吴曙光. 软质岩中压力型锚索锚固段应力分布特征[J]. 土木建筑与环境工程, 2011, 33(5): 69-74 |
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| 作者姓名： | 卢黎 张永兴 张四平 吴曙光 |
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| 作者单位： | 重庆大学 土木工程学院;山地城镇建设与新技术教育部重点实验室,重庆400045;重庆大学 土木工程学院;山地城镇建设与新技术教育部重点实验室,重庆400045;重庆大学 土木工程学院;山地城镇建设与新技术教育部重点实验室,重庆400045;重庆大学 土木工程学院;山地城镇建设与新技术教育部重点实验室,重庆400045 |
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| 基金项目： | 重庆大学中央高校基本科研业务费科研专项资助(CDJZR11200011) |
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| 摘 要： | 为了研究软质岩中压力型锚索锚固段应力分布和传递规律,进行了足尺现场试验.制作了与实际工程条件相似的试验锚索,在试验锚索的锚固段砂浆体中按一定间距设置了应变砖,记录了在不同张拉荷载下各测点的应变情况,测得压力型锚索锚固段的轴向应变和径向应变分布曲线.通过对试验结果进行分析处理,得到了锚固段与围岩界面剪应力分布曲线.测试结...
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| 关 键 词： | 软质岩 压力型锚索 锚固段 应力 应变 |
Stress Distribution in Fixed Anchor Length of Compression Type Anchor in Soft Rock Mass |
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| LU Li,ZHANG Yong-xing,ZHANG Si-ping and WU Shu-guang. Stress Distribution in Fixed Anchor Length of Compression Type Anchor in Soft Rock Mass[J]. Journal of Civil,Architectrual & Environment Engineering, 2011, 33(5): 69-74 |
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| Authors: | LU Li ZHANG Yong-xing ZHANG Si-ping WU Shu-guang |
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| Affiliation: | College of Civil Engineering;Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education Chongqing University, Chongqing 400045, P.R.China;College of Civil Engineering;Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education Chongqing University, Chongqing 400045, P.R.China;College of Civil Engineering;Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education Chongqing University, Chongqing 400045, P.R.China;College of Civil Engineering;Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education Chongqing University, Chongqing 400045, P.R.China |
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| Abstract: | To study stress distribution in fixed anchor length of compression type rock anchor cable, field test was carried out. Strain sensors were placed in the grout paste in fixed anchor length with certain interval. Axial and radial strains of the grout were noted by test. Shear stress distribution curve along the fixed anchor length was obtained by stress-strain relationship and static equilibrium analysis. Analysis results prove that maximal shear stress on the interface can achieve upper level and move forward when the load increases; the transmission length is short; shear stress transfers forward; and three dimensional state is obvious around capacity plates in soft rock mass. |
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| Keywords: | rock mass compression type anchor cable fixed anchor length stress strain |
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