2014年8月上 施工技术 第43卷第15期 CONSTRUCTION TECHNOLOGY 83 D0I:10.7672/5js2014150083 半刚性节点对插盘式脚手架自振周期的影响 吴福宝，殷晨波，戈文思 (南京工业大学机械与动力工程学院，江苏南京211816) [摘要]为研究插盘式脚手架的固有特性，运用ANSYS软件建立有限元模型，有效模拟了节点连接处的半刚性特 性.通过改变节点连接处刚度系数，分析不同连接刚度对脚手架自振周期的影响规律.结果表明，节点连接处刚 度变化对脚手架的低阶周期影响较大，对高阶自振周期的影响并不显著；并在此基础上拟合出低阶周期随刚度系 数变化的曲线图.指出对于插盘式脚手架的标准单跨单元，结构的步距和层高都已确定，节点连接处的刚度是影 响自振周期的主要因素. [关键词]脚手架；插盘式；半刚性；节点；自振周期 [中图分类号]TU731.2 [文献标识码]A [文章编号]1002-8498(2014)15-0083-03 Effects of Semi-rigid Joints on Natural Vibration Period of Disk Lock Steel Tubular Scaffold Wu Fubao Yin Chenbo Ge Wensi College of Mechanical and Power Engineering Nanjing University of Technology Nanjing Jiangsu 211816 China) Abstract:To investigate the inherent characteristics of the disk lock steel tubular scaffold the finite element model was built by ANSYS.This model effectively simulated the semi-rigid trait of joints.Then the effeets of various stiffness coefficients on natural vibration period of the scaffold were analyzed.The simulation results indicated that different stiffness coefficients had a great influence on the low-order period while the effect on the high-order period was little.On the basis of such analysis the fitted curves for the basic natural vibration period of the scaffold to the stiffness coefficient were plotted.It is pointed out that for standard single-span unit of disk lock steel tubular scaffold when the step distance and storey is assured the connection stiffness is the main influence factor on natural vibration per...
半刚性节点对插盘式脚手架自振周期的影响.pdf
