摘要
钢结构管承支座作为桥梁、建筑及管线通道等大型结构中的关键连接部件,其线弹性静力性能对工程实践具有重要指导作用。本文通过ANSYS有限元软件对有限元模型、模态特性和线弹性静力性能展开系统分析。根据实际工况建立了三维有限元模型,通过模态分析获得管承支座前8阶固有频率和振型,并对其结构特性进行了深入探讨。同时,对设计荷载条件下的应力分布和变形规律进行线弹性静力性能分析,明确了管承支座结构中最不利位置。研究结果表明:管承支座结构模态特性呈现出明显的局部主导特征和对称性规律,最大静力位移集中出现在管承座两侧顶端区域,总位移峰值达到0.824 mm,结构总等效应力最大值为135 MPa,出现在管承座与管承支架交界面上部节点处。
As a key connecting component in large-scale structures such as bridges,buildings and pipeline passages,the linear elastic static performance of steel pipe bearing supports has an important guiding role in engineering practice.In this paper,the finite element model,modal characteristics and linear elastic static performance are systematically analyzed by ANSYS finite element software.A three-dimensional finite element model is established according to the actual working conditions,and the first eight orders of the pipe bearing support’s intrinsic frequency and vibration pattern are obtained through modal analysis,and its structural characteristics are discussed in depth.At the same time,the stress distribution and deformation law under the design load conditions are analyzed by linear elastic static performance,and the most unfavorable position in the pipe bearing support structure is clarified.The results show that the modal characteristics of the pipe bearing support structure show obvious local dominant characteristics and symmetry law,the maximum static displacement concentrates in the top region of both sides of the pipe bearing,and the peak total displacement reaches 0.824 mm,the maximum value of the total equivalent stress of the structure is 135 MPa,which occurs at the upper node of the interface between the pipe bearing seat and the pipe bearing bracket.
作者
赵杰
ZHAO Jie(Anhui Construction Engineering Inspection Technology Group Co.,Ltd.,Hefei Anhui 230000,China)
出处
《北方建筑》
2025年第3期154-157,共4页
Northern Architecture
关键词
钢结构管承支座
有限元模型
模态分析
变形规律
应力分布
steel pipe bearing support
finite element model
modal analysis
deformation law
stress distribution
