摘要
基于索股线形与其无应力长度、自重荷载集度的相互关系,提出了主缆索股架设紧缆后内力重分配和紧缆实际线形的模拟算法;提出了非理想平行索股架设紧缆后的质量重分配计算假定并推导了相应的计算公式,建立了计算过程和迭代收敛准则,并运用VC++计算机语言编制了相应的计算程序;分析了各种跨度悬索桥主缆一般索股架设时采用不同间距对成缆线形及内力的影响。结果表明:适当增大一般索股架设调整时的控制间距对成缆线形基本没有影响,对索股间的内力影响有限。
Based on the principle of the interaction of wire strand shape,its unstressed length and dead weight uniform,authors proposed simulation algorithm of internal force redistribution and the cable actual shape after its erection and tightening.The weight distribution calculation assumptions of non-ideal parallel wire strands after the cable tightening were carried out,and the corresponding calculation formula to establish its term and iterative process of convergence criteria were derived,meanwhile,the corresponding calculation program was developed by using VC＋＋ computer language.In addition,the influences of different spacing on cable shapes and internal forces were analyzed when the general wire strands were erected and adjusted.Results show that proper increase of the control spacing of the general wire strands,has no effect on cable shape and has only limited effect on the internal forces of the wire strands.
出处
《建筑科学与工程学报》
CAS
2010年第3期13-18,共6页
Journal of Architecture and Civil Engineering
基金
"十一五"国家科技支撑计划项目(2008BAG07B05)
关键词
悬索桥
主缆架设
索股间距
紧缆
控制参数
suspension bridge
erection of main cable
spacing of wire strand
cable tightening
control parameter
