Dynamic Mechanical Properties and Damage Mechanism of Shotcrete in Roadway Surrounding Rock
FANG Fang
XIE Dongdong
Abstract：In order to reveal the dynamic mechanical characteristics of shotcrete lining under impact loading, the dynamic me-chanical properties of plain concrete and carbon fiber reinforced concrete under impact loading are studied by using the SHPB technology. The results show that: carbon fiber reinforced concrete has obvious strain rate effect, and its strengthening effect is stronger than plain concrete; the failure stress of carbon fiber reinforced concrete is 1.27 times of that of plain concrete, and the failure strain is 2.4 times of that of plain concrete. The resistance strength and elongation of CFRP are remarkably improved. Compared with plain concrete, carbon fiber sheet can retard the damage evolution rate of concrete.
Keywords：surrounding rockshotcrete liningcarbon fiber reinforced plastics (CFRP)impact loadingbolting and shotcreting support
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 58-61,66 )