【摘要】 连接墙肢与墙肢的连梁是剪力墙结构中的重要耗能构件。用ANSYS9.0对沿梁截面高度配3层箍筋的小跨高比连梁的受力性能进行了非线性有限元分析,分析了连梁在反复水平荷载作用下的强度、刚度、裂缝开展情况、钢筋和混凝土的应力及应变分布规律。研究表明:小跨高比连梁配3层箍筋时,有效地约束了混凝土裂缝开展,各受力钢筋的承载力得到了充分发挥,连梁具有较好的延性和耗能能力。更多还原

【Abstract】 Coupling beam,which connects wall limbs,is an important energy-dissipating member of coupled shear wall structure.Nonlinear finite element analysis on the new reinforcement scheme for coupling beam in which the stirrups are arranged at three levels along the depth of coupling beams is performed using ANAYS9.0.Some performances such as strength,stiffness,crack opening and the distribution patterns of stress-strain of reinforcing bar and concrete of coupling beams under reversed cyclic loading are analyzed.The research shows that small span-depth ratio coupling beams with three-layers stirrups,which can delay the concrete cracking effectively and fully utilize the capacity of reinforcement,has good ductility and energy dissipation capacity.更多还原