【摘要】 根据钢框架结构的受力特点,提出了平面简化柱梁模型、双重体系简化柱梁模型和空间简化柱梁模型。它们不但能考虑结构的空间作用、材料非线性和几何非线性等因素影响,还能考虑钢框架结构梁柱的强度比和刚度比、节点域变形、柱附加轴力引起的弯曲变形、梁间塑性铰和双重体系间转角的不协调性对地震响应的影响。简化柱梁模型能够对高层平面钢框架结构和空间结构进行有效的简化,并进行了钢框架的二阶弹塑性动力分析。更多还原

【Abstract】 Based on the characteristics of steel frames, a new model, named as simplified column-beam model, is developed for the seismic response of planar steel frames, planar double systems and spacial steel frame structures. The model takes into account the strength and the stiffness ratio of the beam-to-column, the deformation of joint panel, additional axial force, plastic hinge in the middle of the beam, material nonlinearity and geometric nonlinearity and the incongruity of intersection angle between planar double systems. It simplifies the analysis of highrise planar steel frames, planar double systems and spacial structures effectively. It is also applicable to the second-order elastic-plastic dynamic analysis of steel frames.更多还原