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Stress Distribution in Fixed Anchor Length of Compression Type Anchor in Soft Rock Mass |
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| Authors: | LU Li ZHANG Yong-xing ZHANG Si-ping and WU Shu-guang |
| Institution: | 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 |
| 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. |
| Keywords: | rock mass compression type anchor cable fixed anchor length stress strain |
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