摘要
在地震荷载作用下,建筑物内部结构会出现不同程度形变,严重时甚至会有倒塌危险。因此,研究了多层钢结构模块建筑筒体结构的受力性能。利用薄壳理论得出筒体的挠度、转度、弯矩与剪力等参数,确定模型及其边界条件,利用ABAQUS、插值算法选取恰当的有限元单元,采用整体式方法划分有限元单元,构建完成筒体结构有限元模型。当筒体结构与刚度分布均匀时,选用振型分解反应谱算法分析筒体结构受力性能,反之,则选用时程分析算法分析其受力性能。实验结果表明,在水平、垂直方向施加荷载时,筒体结构会经历弹性、弹塑性强化与塑性变化过程,在1100KN时筒体产生负刚度,且存在剪力滞后效应。
The internal structure of the building may experience varying degrees of deformation under earthquake load.Therefore,this paper studied the stress performance of the tubular structure of the multi-story steel module building.Firstly,the shell theory was used to calculate the parameters such as deflection,rotation,bending moment and shearing force of the cylinder,and thus to determine the model and its boundary conditions.Secondly,the ABAQUS and interpolation algorithm were adopted to select appropriate finite element units.Meanwhile,finite element elements were divided in a holistic manner,and the finite element model of the tubular structure was constructed.When the cylinder structure and stiffness distribution were uniform,the modal decomposition response spectrum was used to analyze the stress performance of the cylinder structure,otherwise,the time-course analysis was used to analyze its stress performance.Experimental results show that when horizontal and vertical loads are applied,the cylinder structure will undergo elastic,elastoplastic strengthening and plastic changes.When the load reaches 1100KN,the negative stiffness is formed in the cylinder,and there is a shear lag effect.
作者
樊志红
李雁英
王玉艳
FAN Zhi-hong;LI Yan-ying;WANG Yu-yan(School of Architectural Engineering,Shanxi College of Applied Science and Technology,Shanxi Taiyuan 030062,China;College of Electric Power and Architecture,Shanxi University,Shanxi Taiyuan 030006,China)
出处
《计算机仿真》
2024年第2期295-299,共5页
Computer Simulation
关键词
有限元
多层钢结构模块建筑
筒体结构
刚度
有限元单元
ABAQUS finite element
Multi-storey steel structure module buildings
Tubular structure
Rigidity
Finite element
