The Experimental Research On Shear Strengthing Of The Cantilever Beam With The High Performance Ferrocement

High performance ferrocement (HPF) technology is a new method to reinforcethe concrete structure and masonry structure.It has the good reinforcement effect andthe high economical usability, therefore had certain utilization in the actual project. Inrecent years, some domestic scholars have taken a series of experimental study andthe theory exploration on flexural behavior of RC beams, but the achievement onshear performance is little. Therefore, this article selects the overhanging beam whatperformance to be closer to continuous beam and the frame beam as the experimentalcomponent.and analysis the shear performance of strengthening research on the backof the experimental foundation.Firstly, some basic materials mechanics performance tests have been tested to thehigh performance ferrocement, it has provided the ferrocement'sconstitutive relationfor the following theoretical analysis.Secondly, we take the shear performance experiment on three RC beams whichare not been strengthened and six RC beams which are strengthened with HPF, inwhich mainly take cuts the cross ratio and holds the Dutch condition as the influencefactor. And carried on the discussion to each influence factor to the reinforcementeffect through drew up the nucleus to the tentative data analysis.This article then used the ANSYS software carry on the non-linear finite elementanalysis on three beams which are once force-bearing, in which has with emphasisanalyzed the reinforcement stirrup strain distribution situation and the test result hascarried on this the analysis contrast, and provide the beneficial supplement for furtheranalyzed HPF the reinforcement mechanism.This article take the shear capacity of strengthening beams as the key point of theanalysis discussion. Standard on the basic theory of truss-arche, proposed thecomputational model of strengthening beams which are occur shear-compressionfailure.and analyzed the influence of two stress. In allusion to the small shear spanratio strengthening beams,we used an statically indeterminate truss model to carry onthe discussion to it. In the synthesis tentative data and the theoretical analysisfoundation, proposed the ultimate bearing capacity formula of strengthening beams asshear span ratio and holding the load condition as the major effect factor.Thenthrough analysis and contraste with the research results of other member's in the sametask group's, take some factors to discussing such as the anchor measure, thecomponent typewhich are influence the shear bearing capacity. Finally, introduced the HPF Strengthening method construction technics and theperformance test method with a project example which the author participate in.In this article, through research the Shear capacity of Strengthening cantileverbeam; we provide the part basis to authorize the regulation of the HPF to reinforce theRC structure technology, and has some certain theory value and the practicalsignificance to perfect and the rich this reinforcement technology...