钢管混凝土格构式风电塔架节点力学性能对比分析  

Comparative Analysis of Mechanical Properties of Concrete-Filled Steel Tubular Lattice Wind Turbine Tower Joints

作　　者：李斌 赵振中 程亚超 LI Bin;ZHAO Zhenzhong;CHENG Yachao(School of Civil Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学土木工程学院,内蒙古包头014010

出　　处：《重庆理工大学学报（自然科学）》2020年第7期108-113,175,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金项目(51768056)。

摘　　要：为了寻求更适合钢管混凝土格构式风电塔架建设的现有节点的形式,设计了两个相贯节点平面模型塔架、两个管板节点平面模型塔架,进行了试验加载和有限元数值模拟。对破坏过程及特征、承载力-变形关系等进行对比分析。研究结果表明:静力水平荷载作用下,模型塔架典型的破坏特征为节点区破坏,低周循环水平荷载作用下,模型塔架典型的破坏特征为交叉斜腹杆连接处母材沿径向撕裂与柱肢柱脚断裂联合破坏;同一塔架结构形式,相贯节点连接形式的模型塔架比管板节点连接形式的模型塔架,具有更高的承载力和塑性变形能力,更有利于钢管混凝土格构式风电塔架的建设和推广。In order to find out which type of existing joints is more suitable for the construction of concrete-filled steel tube lattice wind turbine tower,two plane model towers with tubular joints and two plane model towers with gusset plate joints are designed in this paper. The experimental loading and finite element numerical simulation are carried out. The failure process and characteristics,bearing capacity-deformation relationship are compared and analyzed. The results show that under static horizontal load,the typical failure characteristics of model tower are joint area failure. Under low cyclic repeated horizontal load,the typical failure characteristics of model tower are radial tearing of base material at cross diagonal webs connection and fracture of column leg and column foot. In the same tower structure,model tower with tubular joints is more than gusset plate joints. The model tower has higher bearing capacity and plastic deformation capacity,and is more conducive to the construction and promotion of concrete-filled steel tube lattice wind turbine tower.

关 键 词：钢管混凝土 塔架 相贯节点 管板节点 力学性能 

分 类 号：TU398[建筑科学—结构工程]