论文部分内容阅读
提出了一种基于光纤光栅传感网络系统的索力测量方法.这是一种间接的测量方法,其适用条件在于:结构中使用的拉索一般都是在弹性范围内工作,此时索力与索头上的应变存在一定的关系.利用这种关系,可以在拉索生产后将光纤光栅应变传感器焊接于索头某处,然后对索进行拉力试验标定,绘制出索中拉力与传感器波长变化的关系曲线,这样就可以在施工现场通过读取传感器的波长变化从而推导出索力的变化.本文列举目前常用的索力测量手段,分析其各自的适用范围和局限性;介绍光纤光栅传感网络系统的工作原理,提出将其应用于索力测量的设想;以某实际工程为例,介绍并详细分析对于两种不同构造的拉索,如何采用本方法进行索力测量;最后总结了本方法的适用性以及尚待改进的问题.
A cable tension measurement method based on FBG sensing network system is proposed, which is an indirect measurement method. The applicable conditions are as follows: the cables used in the structure generally work in the elastic range, and the cable force And the head of the strain there is a certain relationship between the use of this relationship can be produced in the cable after the FBG sensor welded to the cable head somewhere, and then cable pull test calibration, draw the cable tension and sensor wavelength Changes in the curve, so that you can read in the construction site by the wavelength of the sensor to derive the change of cable force.This article lists the commonly used cable force measurement methods, analysis of their respective scope and limitations; introduction of fiber grating This paper proposes the idea of applying this method to the cable force measurement. Taking a practical project as an example, this paper introduces and analyzes in detail how to use this method for cable tension measurement for two different types of cables. Finally, The applicability of this method and the problems to be improved.