Nonlinear Finite Element Static Analysis On Reinforced Masonry Shear Wall

Based on summarizing considerable relational reference abroad and domestic, this thesis focuses on the static numerical analysis on reinforced masonry shear wall with restricting constructional columns at the boundary and some core columns in it. This paper also designs six reinforced concrete hollow block shear wall specimen as basic models for test and numerical analysis. Through designing influence parameters,testing parameters and loading devices, six finite element compute model were advanced based on ANSYS . The numerical analysis result accord with the mature theoretical results a little.Based on the infinite element compute model above,impact of the shear resistant of the ratio of grout for concrete and the ratio of height to section thickness and the horizontal reinforcement ratio was discussed by building fourty new infinite element compute models about masonry shear wall with different ratio of grout for concrete and ratio of height to section thickness.Impact of ratio of height to section thickness to reinforced masonry shear walls: when H/B=1.0～1.8, with the ratio of height to section thickness increasing , the shear load-bearing capacity is becoming to drop slowly. When H/B=l.8～2.2, with the ratio of height to section thickness increasing , the shear load-bearing capacity is becoming to drop comparatively rapidly. To the situation of ratio of grout for concrete of 66% in shear walls: when 0.225<σ/f<0.425, with the axial compression ratio increasing, the shear load-bearing capacity is becoming to grow progressively; while when 0.425<σ/f<0.625, with the axial compression ratio increasing, the shear load-bearing capacity is becoming to drop step by step. To the situation of ratio of grout for concrete of 100% in shear walls: when 0.200<σ/f<0.466,with the axial compression ratio increasing, the shear load-bearing capacity is becoming to grow progressively; while when 0.466<σ/f<0.555, with the axial compression ratio increasing, the shear load-bearing capacity is becoming to drop step by step. With the ratio of grout for concrete increasing, the shear load-bearing capacity is becoming to grow progressively. The promotion of horizontal reinforcing steel bar to reinforced masonry shear walls is obvious and with ratio of height to section thickness increasing in opening walls ,the extent of exertion of horizontal reinforcing steel bar is becoming to drop accordingly.