变电构架空间管节点受力性能分析  

MECHANICS BEHAVIOR ANALYSIS ON SPATIAL TUBULAR JOINT WITH SUBSTATION TRUSS

作　　者：钟宣[1] 郭宏超[2] 

机构地区：[1]中冶建筑研究总院有限公司,北京100088 [2]西安理工大学土木建筑工程学院,西安710048

出　　处：《工业建筑》2014年第2期137-141,44,共6页Industrial Construction

基　　金：国家自然科学基金项目(51308454);中国博士后54批面上项目(2013M542371);陕西省自然科学青年人才项目(2013JQ7006);陕西省教育厅自然科学专项(2013JK0967)

摘　　要：为考虑钢管节点的空间效应和影响,采用ABAQUS软件建立三维空间模型,分析K型、KT型空间管节点的承载力、连接板应力分布及变形等指标,考察减小连接板厚度后节点的受力性能。结果表明:在设计荷载作用下节点没有明显变化,基本处于弹性状态;减小连接板厚度后,个别试件局部进入塑性,但分布面积较小,区域不连通,试件整体受力稳定。表明采用优化后的连接板厚度亦可满足工程设计要求,安全经济。In order to consider the spatial effect and influence of joints, three-dimensional space models were created by using ABAQUS program. The bearing capacity, stress distribution and deformation of connection plates thickness were analyzed for the K-type and KT-type tubular truss joints, and the mechanical performances after reducing connection plate thickness was examined. It was clearly that the joints had no obvious phenomena under design load, the members and connection plates were in the elastic state. The parts of connection plate were in plastic state after the thicknesses of the connection plates was reduced, but the yield region was smaller and not connected, the overall stability of the tubular joint was good. Which show that the optimized thickness of the connection plate can meet the requirements of engineering design, which is safe and economic.

关 键 词：变电构架 数值分析 空间管节点 变形幅值 应力分布 

分 类 号：TU392.3[建筑科学—结构工程]