（1 中国电力科学研究院有限公司， 北京 100192； 2 国核电力规划设计研究院有限公司， 北京 100095； 3 国网冀北电力有限公司， 北京 100053）

［摘要］为研究直线旋转输电角钢塔转换层结构的承载能力，对该结构足尺转换层节点进行了承载力试验研究。以1个直线旋转塔转换层节点试件作为研究对象，通过足尺转换层节点试件的承载力试验，获取其变形及应变在荷载作用下的变化规律，研究直线旋转塔转换层的承载力和受力机理。研究表明：直线旋转塔转换层节点试件在荷载作用下的最不利位置出现在转换层连接节点处；试件各杆件在试验荷载下处于弹性状态，其承载力性能和变形性能符合设计要求，有较好的安全储备；转换层刚度与整体试件刚度匹配较好，协同工作性能好。

［关键词］直线旋转输电角钢塔； 转换层节点； 承载力； 变形； 应变

中图分类号：TU391文献标识码：A文章编号：1002-848X(2018)22-0028-05

Experimental study on load-bearing capacity of conversion layer of linear rotating transmission angle tower in restricted mountainous area

Fang Zhenggang1, Mo Zenglu2, Luo Yi3, Yang Zhen1

(1 China Electric Power Research Institute, Beijing 100192, China; 2 State Nuclear Electric Power Planning and Design & Research Institute Co., Ltd., Beijing 100095, China;3 State Grid Jibei Electric Power Company Limited, Beijing 100053, China）

Abstract:In order to study the bearing capacity of the conversion layer structure of  linear rotating transmission angle tower, experimental study on the bearing capacity of the full-scale conversion layer node of the structure was carried out. Taking a specimen of a conversion layer node of a linear rotating tower as a research object, through the test of bearing capacity of a full-scale conversion layer node specimen, the variation laws of its deformation and strain under load were obtained to study the bearing capacity of the conversion layer of the linear rotating tower and stress mechanism. The research shows that the most unfavorable position of the specimen in the conversion tower of the linear rotating tower appears at the connection node of the conversion layer. The rods of the specimen are in the elastic state under the test load and the bearing capacity and deformation meet the design requirements，which has a good safety reserve. The stiffness of the conversion layer matches well with the stiffness of the whole test piece and the work performance is good.

Keywords:linear rotating transmission angle tower; transition layer node; bearing capacity; deformation; strain

*国网公司2017年依托工程基建新技术研究项目（山区受限塔位单回路直线旋转塔的应用研究GCB11202703465）。

作者简介：房正刚，硕士，Email：mexie1204@163.com。