【摘要】 采用端部带转动弹簧的梁单元力学模型,编制相应的Fortran语言刚架计算程序,对考虑节点刚度的混凝土预制装配框架结构的动力特性及其在地震作用下的层间位移和层间位移角进行了系统研究。结果表明:混凝土预制装配框架结构的自振周期随着节点刚度的减小而不断增大,节点转动刚度对低阶振型自振周期影响较大、对高阶振型自振周期影响较小;层间位移和层间位移角随着节点刚度的增大而不断减小,在节点铰接或者节点刚度较小时不满足小震作用下的钢筋混凝土框架弹性位移角限值要求。更多还原

【Abstract】 In this paper,a mechanics model for the frame beam element with considering joint stiffness is presented.With this model,the paper research the dynamic properties、story displacement and story drift angle of precast concrete frames that considering joint stiffness.The results showed that:period of vibration of precast concrete frames increased as the joint stiffness decreasing,joint stiffness affect period of vibration of lower order modes greater than higher modes.Story displacement and story drift angle decreasing with the joint stiffness increases,hinge joints or little joint stiffness does not meet the limit value of the elastic displacement angle of RC frame.更多还原