新型组合抗侧力构件抗震性能研究

摘要

为克服钢板剪力墙和中心支撑钢构件两种抗侧力体系的缺点,首次提出了将钢板剪力墙的钢板与中心支撑体系的支撑相结合构成一种新型组合抗侧力构件——钢板-钢支撑组合抗侧力构件,其原理与优点在于钢板的平面外位移由于受到支撑的约束而减小,其滞回曲线的“捏拢”现象得以减轻,耗能能力得以提高;另一方面,支撑因钢板拉力场的约束,避免或推迟了平面内极值点失稳的发生,延性大大增加,耗能能力得到充分发挥.%To overcome the weaknesses of concentrically braced steel frames (CBSFs) and steel plate shear wall,a new composite member of steel plate and brace resisting lateral force was developed in which the steel brace and steel plate shear wall were organically fixed together.The principle and excellence of the new system lie that on the one hand,the brace restrains the displacement out of plane of steel plate so that the "pinching phenomenon" of hysteretic curve of steel plate is improved,the capacity to dissipate seismic energy is enhanced.On the other hand,the buckling of extreme point type of the compressed brace in the plane is prevented or deferred because of the restraint of the tension field of steel plate wall so that the ductility and the capacity to dissipate energy are increased.