中文摘要：

近年来,预应力钢结构在国内外发展迅猛,拉索作为预应力钢结构中的关键构件,其特性对预应力钢结构的成形、受力及整体稳定起着决定性的作用.在分析提出背景和研究必要性的基础上,简述了国内外现有的测量拉索索力的主要方法,并对各种测试方法的特点进行了分析总结,频率法为最常用的索力测试方法;对频率法测索力的原理以及抗弯刚度和边界条件对其影响的研究现状进行了阐述;介绍了拉索抗弯刚度的研究现状,提出了针对拉索抗弯刚度这一频率法中关键因素的研究内容,为进一步研究拉索抗弯刚度以及频率法索力测试技术创造了一定的条件.

英文摘要：

Pre-stressed steel structure is developing rapidly home and abroad in recent years.As cable is a key component of pre-stressed steel structure,its characteristic plays a decisive role in the forming and bearing capacity of the steel structure as well as the overall stability.Based on analysis of the background and necessity to the study,major domestic and foreign existing methods of measuring cable force are reviewed.Characteristics of various methods were also analyzed,and it is shown that the vibrationfrequency method with its advantages,is the most common choice for the cable tension force testing of existing pre-stressed space structure.Principles of the vibration-frequency method and the state of the art of the bending stiffness and boundary condition in vibration-frequency method are described.The research status of cable bending stiffness is also introduced in this paper.Key research issues around the bending stiffness which is the key factor of the vibration-frequency method are presented.It will be an important reference for further research of cable bending stiffness and vibration-frequency method.