| As a new kind of compound material, the steel fiber reinforced concrete has very good physical and mechanical performance and it is widely applied in civil engineering such as shield segment for its good ductility, crack resistance and impact resistance.But the current reinforced concrete shield segments are easily damaged or burst in production, delivery and construction progress and this brings engineering tremendous inconvenience. To solve this problem, some local companies try to use steel fiber reinforced concrete segment instead.This paper explores the reasonable configuration of reinforced bar of the steel fiber reinforced concrete segment by experimenting the mechanical performance of steel fiber reinforced concrete and steel fiber reinforced concrete segment. The paper mainly covers:1) Carrying on massive mechanical performance experiments on steel fiber reinforced concrete structures without steel reinforcement, whose results and data confirms its performance, especially the improvement of its folding strength, shearing strength and toughness, as well as providing the basis for the kind and volume ratio of the steel fiber used in segments.2) Carrying on the reinforcement ratio design of the steel fiber reinforced concrete segment according to related design codes and confirms its security and rationality by monolithic segment mechanical performance test.3) Based on the design variable revision and structural form analysis, proposing the reasonable configuration of reinforced bar of steel fiber reinforced concrete segment and confirms its economic efficiency under reasonable configuration of reinforced bar. |
