Axial Compressive Performance of Multi-Fractured Rock Masses Constrained by CFRP
In order to study the reinforcement performance of carbon fiber reinforced polymer(CFRP)on multi-fractured rock masses,a solid model of the specimen was obtained by using 3D printing technology and the rock specimen containing 20 cracks was prepared by using pouring method,and its surface was constrained and rein-forced with CFRP cloth.The strain evolution characteristics of the specimen during uniaxial compression were ob-served and recorded using digital imaging correlation(DIC).The experimental results show that under the same loading rate,CFRP constraint can significantly improve the bearing capacity of multi-fractured rock specimens,but the peak strength growth trend decreases with the increase of CFRP cloth layers.The CFRP constraint enhances the resistance of multi-fractured rock specimens to failure and significantly improves the brittle failure characteristics of the specimens in the post peak stage.The CFRP constraint allows more prefabricated cracks to participate in the failure process of the specimen,enhances the integrity of the specimen,and has a good global reinforcement effect.
国家科技期刊平台
NSTL
万方数据
维普
