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Study on prototype test and stress distribution regularity of pressure-dispersive cable

LEI Jin-shan1,YANG Xiu-zhu1,WANG An-zheng1,QIANG Rong2 (1.College of Civil Engineering,Central South University,Changsha 410075,China; 2.China Water Conservancy and Hydropower Engineering Bureau 8 Company Limited,Changsha 410008,China)  
Based on engineering practice,anchoring stress measurement of pressure-dispersive prestressed cable was carried on.Test result showes that for two-stage supporting body,whose space is 2 m,the influence range of bond stress is about 5.0 m from the bottom of anchoring section,and it changed little with external load.Axial force has two peak value,at which there is external load for both supporting body.Range of influence is about 4.8m from the bottom of anchoring section.Measured data is consistent with calculation results,which rerified the stress and strain distribution regularity of grouting body.It will be useful for future similar anchor projects.
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