Study on Failure Mode of Steel Fiber Reinforced High Strength Concrete Wall under Blasting Load

Abstract

The dynamic response of the SFRHSC wall under blasting load is simulated and analyzed by establishing the 1/4 wall model with finite element explicit dynamic analysis software ANSYS/ls-dyna. Considering the damage and strain rate effect, the J-H-C model is used as material model, and model parameters are calculated by using the test of literature data. The explosion loaded by CONWEP model and *LOAD_BLAST keyword. Different failure modes of wall under different scaled distances are analyzed, the results show that shear failure will occur when the scaled distance is small, flexure failure will happen when the scaled distance is large, in addition, comparing with normal reinforced concrete, the displacement in the center of the SFRHSC wall is smaller under the same condition, which embodied that the high tensile strength and compressive toughness of SFRHSC are significantly enhanced the anti-explosion ability of the wall. The research results of this article can provide reference for the design of SFRHSC fender wall.