空间管桁架在±1100 kV户内直流场中的应用研究

Research and Application on Space Tubular Truss in ± 1 100 kV Indoor DC Hall

[目的]超高大跨度结构在电力行业应用越来越多,其结构选型对工艺适应性及安全经济性意义重大。[方法]通过±1 100 kV昌吉换流站直流场工程实例,介绍了超高大跨不规则特高压户内直流场结构选型过程。根据户内直流场工艺布置及荷载特点,详细阐述了该户内直流场采用空间管桁架结构方案技术优势、结构布置特点及工艺适应性,介绍该户内直流场结构整体计算及主要构件的设计计算结果,并同网架方案进行了技术经济对比分析,展望了空间管桁架结构在超高大跨度不规则电力建筑中的应用前景和注意事项。[结果]对比分析结果表明:空间管桁架结构为空间自稳定系统,结构安全性好,工艺适应性强,加工安装方便,造型美观简洁。[结论]对于超高大跨度电力建筑可以优先考虑选用空间管桁架结构方案。

[Introduction] High big-span irregular structures are increasingly used in the power industry,and their structural selection is of great significance to process adaptability,structure safety and economy. [Method] Through ± 1 100 kV Changji DC Converter Station project,space tubular truss structure was introduced to be used in the indoor DC Hall structure design,which is a high bigspan irregular electric structure. According to the electrical process layout and its loadings. This paper gave the process how to select the space tubular truss structural form,the structure characteristics and its technology advantages; the structure integral calculation and key component design calculation results were show n in the design; after comparing with the lattice grid structure form both in technical and economic aspect,prospects of using space tubular truss structure in high big-span irregular electric structures and its key matters in design was discussed. [Result] Analysis shows that the space tubular truss structure is a space self-stabilizing system with good structural safety,strong process adaptability,convenient processing and installation,simple and beautiful. [Conclusion] The space tubular truss structure will be a preferred choice for the design of high big-span irregular electric structures in the future.