（1 青海省中波台管理中心， 西宁 810008； 2 同济大学土木工程学院， 上海 200092; 3上海同磊土木工程技术有限公司， 上海 200433； 4 江苏英斯泊物联网科技有限公司， 启东 226200）

［摘要］以青海省尖扎中波台自立发射塔为对象，通过布置结构健康监测系统，研究塔关键部位的应力状态和结构动力特性，监测系统主要包括风速风向、应力、加速度等监测项，基于监测结果分析了塔底部支座锚固区和塔身应力状态，采用频谱分析法识别了结构的动力参数。结果表明自立发射塔底部支座锚固区和塔身应力变化值均较小，实测结构频率与按规范中的经验公式计算结果较吻合。

［关键词］自立发射塔； 结构健康监测； 动力特性； 频谱分析

中图分类号：TU317+.2文献标识码：A文章编号：1002-848X(2018)13-0082-04

Health monitoring study of self-supporting radio tower of medium-wave station of Jainca County in Qinghai Province

Ma Yuzhong1, Luo Xiaoqun2, Jin Xiuna3, Zhang Shaoquan4

(1 The Management Center of Medium-Wave Station of Qinghai Province, Xining 810008, China; 2 College of Civil Engineering, Tongji University, Shanghai 200092, China; 3 Shanghai Tonglei Civil Engineering Technology Co., Ltd., Shanghai 200433, China; 4 Jiangsu Yingsibo Internet of Things Technology Co., Ltd., Qidong 226200, China)

Abstract:The stress state and structural dynamic characteristics of the key parts of the tower were studied by arranging the structural health monitoring system in self-supporting radio tower of medium-wave station of Jainca County in Qinghai Province. The monitoring system mainly included the monitoring items of wind speed, wind direction, stress and acceleration. Based on the monitoring results, the stress state of the anchorage zone in bottom of the tower and the tower body were analyzed. The dynamic parameters of the structure were identified by spectrum analysis method. The results show that the changes of stress values in anchorage zone in bottom of the tower and tower body of the self-supporting radio tower are relatively small, and the measured frequency is in good agreement with the empirical formula according to the specification.

Keywords:self-supporting radio tower; structural health monitoring; dynamic characteristic; spectrum analysis

作者简介：马玉忠，本科，高级信息系统项目管理师，Email: mayuzhongx@163.com。