非接触激光检测技术在排架柱振动测试中的应用  

Application of Contactless Measuring Technique to Vibration Test of Bent Frame Column

作　　者：孙立国[1] 杨子胜[2] 

机构地区：[1]河海大学工程力学系,南京210098 [2]中原工学院建筑工程学院,郑州450007

出　　处：《三峡大学学报（自然科学版）》2013年第6期80-83,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金青年项目(51308188)

摘　　要：通过室内试验得到PDV-100斜向测量物体振动的一般规律,然后应用其检测桥式起重机运行时引起的排架柱顶振动.该方法首先采用两个不同位置的PDV-100激光测振仪测出排架柱顶沿着两光路方向的振动速度,计算出排架柱顶垂直轨道方向和沿着轨道方向的振动速度,最后采用积分法将速度谱转换成位移谱,得到振动位移的时程曲线.该方法特别适合于因现场条件所限,无法在振动方向上布置测试光源的特殊情况.本文的研究进一步推广了PDV-100激光测振仪在土木工程中的应用范围.Through laboratory tests,PDV-100diagonal measurement of body vibrations general rule is obtained;and then applying it to detec run-time overhead crane vibration caused by bent capitals.Firstly,vibration velocities of the bent top along light paths are measured with the PDV-100at two different positions. And secondly,vibration velocities of the bent top along vertical direction and parallel direction of the rail are calculated.Velocity spectrum is changed into displacement spectrum by the method of integral transformation.Temporal curve of the vibration displacement is obtained finally.This method is very useful for the case when testing instrument can not be arranged on the direction of vibration due to the restriction of site condition.This study extends the PDV-100range of applications in civil engineering.

关 键 词：桥式起重机 激光测振仪 振动 频谱 

分 类 号：TV332.15[水利工程—水工结构工程]