【摘要】 本文介绍两层双跨钢筋混凝土框架在反复荷载作用下的试验,采用直接由混凝土和钢筋的应力-应变关系确定梁、柱恢复力特征值,用单分量弹塑性杆系模型和逐步积分方法,分析了试验框架直到破坏的变形全过程。计算与试验结果基本符合。同时,还讨论了节点区钢筋变形与锚固滑动、节点剪切变形等因素对框架弹塑性性能的影响。更多还原

【Abstract】 In this paper, reversed cyclic horizontal load tests on two-bay two-storey reinforced concrete model frames are described.Based on stress-strain relationship of concrete and reinforcements, the restoring force characteristic parameters of beams and columns are predicted. Single component model representing the elastoplastic member of the tested frame and the method of step-by-step integration are applied to analyse the complete deformation process until the tested model frames failed,It has been found that the results measured on models match closely with those calculated. Meanwhile,deformation and slipping of anchorages of steel reinforcements within joints region and influence of shear deformation of the joints on elastoplastic behavior of the reinforced concrete are also discussed.更多还原