摘要
由于吊杆长度刚度、边界条件等因素对结构的影响程度不同,可得到频率法测吊杆力在不同假设下的四种计算模型。结合某140 m提篮式系杆拱桥,对四种模型进行了计算分析,与实测的数据进行对比,结果表明,在测试吊杆力时,系杆拱桥特别是短索的测试中必须考虑刚度以及边界条件的影响。
According to the different influence of the stiffness and boundary conditions of the derrick,four models of different assumptions in measuring the suspender forces by the frequency method are given.The four modes are calculated and analyzed combed with an arch bridge.The conclusion points out that,in measuring the suspender force,the bowstring arch bridge,especially the short cable,must consider the influence of the stiffness and boundary conditions.
出处
《石家庄铁道大学学报（自然科学版）》
2011年第3期16-19,共4页
Journal of Shijiazhuang Tiedao University(Natural Science Edition)
关键词
系杆拱桥
频率法
吊杆力
bowstring arch bridge
frequency method
the suspender force
