Experimental Investgation on Flexural Behavior of Rc Beams with Grade Hrb500 Reinforcement of Low-cost and High-performance
|School||Anhui University of|
|Keywords||Low-cost high-performance HRB500 grade reinforced Girder Carrying capacity Crack Deflection Steel fiber|
HRB500 grade reinforced especially of the high strength reinforced as the force 主筋 components due to lack of sufficient experimental basis, was not included in the current design of concrete structures \reinforced (hereinafter HRB500 (LH)) Maanshan Iron \u0026 Steel Co., Ltd. uses of vanadium nitride micro-alloying innovative technology recently developed new varieties of hot-rolled ribbed steel bars. HRB500 grade reinforced, HRB500 (LH) reinforced the strength and ductility has not dropped, but the production of the desired vanadium nitrogen alloy content is reduced to a certain extent, reduce the cost of steel production, it is known as low-cost high-performance reinforced . In order to study HRB500 (LH) level reinforced concrete members by force 主筋 applicability, need Experimental study of the mechanical properties of HRB500 (LH) reinforced concrete members. This paper focuses on a reinforced concrete beam members, HRB500 (LH) and flexural properties. Were designed two sets of components, the first group of seven with HRB500 (LH) reinforced concrete beams of steel fibers doped second group of six with HRB500 (LH) and the reinforced steel fiber concrete beams. Beams under concentrated loads static test, observe the specimen from the load until the beam completely undermine the whole process of the loss of carrying capacity test phenomenon began to crack, cracking load and ultimate load measured specimen load value and longitudinal reinforcement strain concrete compressive strain and strain and deflection values. Test data analysis, and control of the content of the current design of concrete structures and steel fiber reinforced concrete structural design and construction procedures, concluded that: 1) whether it is mixed with steel fiber and steel fiber flexural members normal section bearing capacity measured values ??are slightly larger than the calculated value of HRB500 (LH) bearing capacity of reinforced concrete beams follow the existing norms or procedures calculated. 2) HRB500 (LH) reinforced concrete flexural members deflection press \The beam deflection Calculated or steel fiber reinforced concrete structural design and construction procedures formula be adjusted and multiplied by the coefficient of the expansion of 1.25. 3) the design of concrete structures \The calculated and measured values ??are in good agreement can be directly related formula of steel fiber reinforced concrete structural design and construction procedures.