输电线路钢管塔法兰节点承载性能研究  

Study on Flange Joint Bearing Performance for Transmission Steel Tower

作　　者：付豪[1] 周雪宁 海晓涛[3] 周洪 

机构地区：[1]东北电力大学建筑工程学院,吉林吉林132012 [2]乐山供电公司,四川乐山614000 [3]中国电力科学研究院,北京100192 [4]湖南省电力勘察设计院,湖南长沙410007

出　　处：《陕西电力》2011年第5期24-28,共5页Shanxi Electric Power

摘　　要：法兰节点作为钢管结构的重要连接节点形式,其承载性能直接影响着杆件的承载力,进而影响输电杆塔的稳定。文中对柔性和刚性两种法兰节点进行分析,针对柔性法兰各部分尺寸参数变化,用ANSYS软件进行了数值模拟并建立多个有限元模型,分别研究其极限承载力。比较了法兰盘厚度、螺栓位置、螺栓数量对柔性法兰极限承载力的影响,对实际工程中用于输电杆塔的法兰设计有一定的参考价值。针对刚性法兰,以方韶站220kVSKT12双回跨越塔编号为FL5的刚性法兰为例,对其进行实体建模,研究刚性法兰的变形、破坏过程,计算其极限承载力并针对螺栓的受力状态进行了分析,得出螺栓在轴向受拉过程中为拉弯组合状态,该研究内容可为相关行业规范的完善提供参考。As an important connection form of steel tubular structure,the bearing capacity of flange joint directly influences the bearing capacity of rod piece,and then affects the stability of whole steel tower.This paper analyzes the flexible and rigid flange joints,simulates each part of flexible flange size-parameters change with ANSYS,and builds several finite element models.The ultimate bearing capacity is discussed respectively.The influence of flanges thickness,bolt locations and bolt quantity on flexible flange is discussed.It provides reference for the design of project.For the rigid flange,this paper builds the entity modeling based on the practical engineering,and studies the deformation and destruction process,calculates the ultimate bearing capacity and analyses the bolt stress state.It is concluded that bolts stands tension and bending in the state of tensile process,which would be reference for the perfection of relevant specification.

关 键 词：输电钢管塔 柔性法兰 刚性法兰 数值模拟 

分 类 号：TM753[电气工程—电力系统及自动化]