Experimental Study on Strain Softening Behaviour of Shear Fracture in Concrete Structures

摘要

With the aim of examining the shear transfer mechanism and the strain softening behaviour of shear fracture process in concrete structures, shear tests were performed. Also the differences in the shear transfer mechanism and the strain softening behaviour of the shear fracture process betweeen construction joints of different degrees of surface roughness and unjointed concrete structures was investigated. As a result, it has become clear that the shear fracture process is subdivided into approximately four stages: pre-crack initiation stage, crack propagation stage, transition stage, and interlocking stage. Strain softening behaviour of the shear fracture was observed in the crack propagation stage indirectly.