输变电站钢结构设计优化研究

Research on Optimization of Steel Structure Design for Power Transmission and Transformation Stations

为进一步提高输变电站钢结构建设质量,本文采用数值模拟方法,对钢结构设计细节尤其连接方法进行计算分析,分别对高强螺栓连接以及焊缝链接两种连接方式进行模拟计算,以明确焊缝、螺栓间距等因素对钢结构受力变形的影响,所得结论如下:①通过对高强螺栓的数值模拟可知,随着螺栓间距的增加,螺栓剪切强度逐渐增加;②针对焊缝的剪切破坏过程进行数值模拟可知,塑性弯矩M增加和最大弯矩M的连接阻力随着底板厚度值的增加而增加,此外在破坏模式方面,底板厚度对该参数没有特别的影响。本文研究内容对后续输变电站钢结构的设计工作具有一定借鉴作用。

In order to further improve the quality of steel structure construction in power transmission and transformation stations,this article adopts numerical simulation methods to calculate and analyze the details of steel structure design,especially the connection methods.High strength bolt connection and weld joint connection were simulated and calculated separately to clarify the influence of factors such as weld seam and bolt spacing on the stress deformation of steel structures.The conclusions drawn are as follows:①Through numerical simulation of high-strength bolts,it can be concluded that as the spacing between bolts increases,the shear strength of bolts gradually increases;②Numerical simulation of the shear failure process of the weld reveals that the connection resistance between the plastic bending moment M and the maximum bending moment M increases with the increase of the bottom plate thickness.In addition,regarding the failure mode,the bottom plate thickness has no special effect on this parameter.The research content of this article has certain reference value for the design of steel structures in subsequent power transmission and transformation stations.