起重运输机械Issue(1)：24-30,7.
基于时间序列参数图形化的塔式起重机塔身钢结构损伤辨识方法研究
刘超 1臧泓源 1杨蕊 1宋世军 1张会敏2
作者信息
- 1. 山东建筑大学机电工程学院 济南 250101
- 2. 泰山学院机械与建筑工程学院 泰安 271000
- 折叠
摘要
Abstract
In order to quickly identify the state of tower crane,the author proposed a damage identification method of tower crane steel structure based on graphical time series parameters.According to this method,the simulation model of QTZ40 tower crane can be used to obtain the top displacement data of the tower body in good condition and in different damage position combinations under no load.The time series analysis is carried out by using the data of the tower in good condition,and an autoregressive model of good condition is established.An autoregressive model of the state to be detected is established based on the data of the state to be detected of the tower;The first three parameters of the autoregressive model in the X-axis direction and Y-axis direction of the tower body are selected as the extracted eigenvalues to construct a characteristic triangle.Establishing a safety interval by taking the area of the intact triangle as a reference value;Damage identification of tower steel structure is carried out by taking the triangle area of the state to be detected as the damage identification value.This method has the following advantages:using fewer parameters for graphics,reflecting the information contained in the monitoring data through the graphic area and optimizing the number of sensors,and quickly identifying the tower state only by arranging few sensors at the top of the tower.Meanwhile,the validity of this method was verified by the physical experiment platform of tower stiffness of tower crane.关键词
塔式起重机/塔身/时间序列/模型参数/三角形面积/损伤辨识Key words
tower crane/tower body/time series/model parameters/triangular area/damage identification分类
机械制造引用本文复制引用
刘超,臧泓源,杨蕊,宋世军,张会敏..基于时间序列参数图形化的塔式起重机塔身钢结构损伤辨识方法研究[J].起重运输机械,2024,(1):24-30,7.
