摘要
建筑混凝土轻钢结构强度高、整体刚性好、变形能力强,但由于其构件断面偏小,发生开裂损伤后极限承载能力下降,严重影响建筑整体质量,所以应研究建筑混凝土轻钢结构损伤检测方法。先构建轻钢结构实体并自动生成三维轻钢结构有限元模型,利用模态分析模块求解轻钢结构模态参数。采用希尔伯特振动分解算法,获取轻钢结构损伤检测的最大幅值分量信号,并将其输入至全连接神经网络,检测损伤情况,并输出损伤结果。测试结果显示:获取的一阶和二阶频率结果与实际结果之间最大差值分别为0.75Hz和1.2Hz,说明上述方法可准确得出轻钢结构的相关模态参数,能够完成建筑混凝土轻钢结构损伤的可靠检测。
The light steel structure of building concrete has high strength,good overall rigidity and strong deformation capacity.However,due to the small section of its components,the ultimate bearing capacity decreases after cracking damage,which seriously affects the overall quality of the building.Therefore,the damage detection methods of building concrete and light steel structures are studied.The light steel structure entity is constructed and the three-dimensional finite element model of the light steel structure is automatically generated.The modal parameters of the light steel structure are solved by the modal analysis module.Hilbert vibration decomposition algorithm is used to obtain the maximum amplitude component signal of light steel structure damage detection,which is input to the fully connected neural network to detect the damage and output the damage results.The test results show that the maximum difference between the obtained first-order and second-order frequency results and the actual results is 0.75Hz and 1.2Hz respectively,which indicates that the method can accurately obtain the relevant modal parameters of light steel structures and can complete the reliable detection of damage of building concrete light steel structures.
作者
张泽鹏
王仁义
ZHANG Ze-peng;WANG Ren-yi(School of Architecture and Engineering,Zhengzhou University of Industry Technology,Zhengzhou Henan 451100,China;Zhengzhou University,Civil Engineering College,Zhengzhou Henan 451100,China)
出处
《计算机仿真》
2024年第1期256-260,共5页
Computer Simulation
关键词
建筑混凝土
轻钢结构
损伤检测
模态参数
幅值分量
有限元模型
Building concrete
Light steel structure
Damage detection
Modal parameters
Amplitude component
Finite elementmodel
作者简介
张泽鹏(1992-),男(汉族),河南省新郑市人,硕士,实验师,研究方向:土木工程。;王仁义(1956-),男(汉族),河南省郑州市人,高级工程师,研究方向:建筑结构。
