单向索的索端弹簧刚度和索截面估算方法  

ESTIMATION METHOD OF SPRING STIFFNESS AND CROSS-SECTION FOR CABLE-END OF ONE-WAY CABLE

作　　者：吴宏康 卓新[1] 

机构地区：[1]浙江大学建筑工程学院,杭州310000

出　　处：《钢结构》2017年第3期82-85,96,共5页Steel Construction

摘　　要：为了得到弹簧刚度和索截面面积的估算方法,针对含索端弹簧的单向单层索网幕墙的受力特点,引入两个假定,并利用结构力学原理,推导得到其工作状态下的内力、挠度的求解算式。结合索端弹簧刚度减小,会引起索中轴力减小和跨中挠度增大的特点,综合考虑相关规范的规定,推导得出3种不同情况下的索端弹簧刚度及索截面的快速计算式,并且总结了索端弹簧刚度、外荷载、索长对索截面、索初应变取值的影响规律。Two introduced assumptions and the principle of structural mechanics were used to deduce the formula of axial force and mid-span deflection of one-way cable curtain walls with cable-end spring. When the stiffness of cable end spring decreased,the axial force of cable decreased and the mid-span deflection increased. Considering the formula of axial force and mid-span deflection of the relevant specifications,several formulas were deduced to estimate the spring stiffness and cable cross-section for three situations. And the influence rule of stiffness of cable-end spring,external load and cable length on the value of cable cross-section and initial strain were summarized.

关 键 词：玻璃幕墙 索端弹簧 刚度 索截面 初应变 

分 类 号：TU399[建筑科学—结构工程]