Experimental Study On Seismic Behavior Of High Ductile Fiber Reinforced Concrete Low Shear Wall

High ductile fiber reinforced concrete(HDC) with high toughness, crack resistance performance and high damage resistance, especially is able to with multiple fractures and strain hardening characteristics under tension together shear loads, which can significantly improve the brittleness of concrete and seismic performance of components. Therefore it has a widely application prospects.Reinforced concrete low-rise shear wall of high rigidity and bearing capacity, at the bottom of a large space with a conversion layer Shear-wall Structure is widely used. Due to the low shear wall damaged by shear deformation mainly, which showed significant brittle failure under earthquake and bring great difficulty for structure repaired. To give full play to the high ductility of fiber reinforced concrete shear good performance advantages, this article from the perspective of improving the material properties, fiber reinforced concrete made with high ductility instead of ordinary concrete, thus improving low shear deformation capacity and seismic performance.Because the current study the mechanical properties of the material is not perfect HDC, HDC article first compression performance tests conducted research in experimental design based on the four low shear specimen and experimental study was carried out and theoretical analysis. Specific studies are as follows:(1) Through nine different groups with HDC compression ratio were studied HDC cube compressive strength size effect relationship between the prism and the compressive strength of specimens of different sizes to determine the compressive strength evaluation method HDC and size effect coefficient.(2) The existing research on the basis of five groups HDC prism through uniaxial compression test, get HDC compressive stress- strain affects the whole curve, research fiber content, fiber type and loading rate on the curve parameters, and propose the HDC axial compressive toughness segmentation evaluation methods.(3) Through two HDC low shear wall, two steel-HDC combination of low shear walls quasi-static test, study HDC low shear failure mechanism and the combination of low shear wall, bearing capacity, deformation capacity, energy dissipation capacity seismic performance.(4) Considering the role of HDC tensile material, combined with HDC material itself constitutive model HDC shear walls were bending performance analysis, capacity analysis of shear wall bending method is suitable for HDC material.