Experimental Study on the Eccentric Pullout Performance of Four-bar Reinforced Concrete Structures
In order to study the eccentric pullout performance of multi-bar reinforced concrete structures,two axial pullout tests of four-bar reinforced concrete structures and five eccentric pullout tests of four-bars reinforced concrete structures were carried out by using the eccentricity distance and the spacing of the reinforcement as parameters,and the effects of the eccentricity distance and the spacing of the reinforcement were analyzed on the pullout bearing performance of the four-bar reinforced concrete structures.The test results showed that composite damage oc-curred in all the four-bar reinforced concrete specimens.When other conditions were the same,the pull-out capacity of the four-reinforced concrete structure decreased with the increase of the eccentricity distance.In addition,on the basis of the experimental study,the calculation model and calculation formula of the eccentric pull-out load capacity of four-bars reinforced concrete structure were established by considering the effects of eccentricity distance,reinforcement spac-ing,reinforcement edge distance and reinforcement depth,and the calculated values were in good agreement with the experimental values,which provided a technical basis for the design and cal-culation of four-bar reinforced concrete structures.
post implant anchoring technologyfour barseccentric pullout capacitygroup an-chor effectreduction coefficient
万方数据
维普
