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（1 青海省中波臺(tái)管理中心， 西寧 810008； 2 同濟(jì)大學(xué)土木工程學(xué)院， 上海 200092; 3上海同磊土木工程技術(shù)有限公司， 上海 200433； 4 江蘇英斯泊物聯(lián)網(wǎng)科技有限公司， 啟東 226200）

［摘要］以青海省尖扎中波臺(tái)自立發(fā)射塔為對(duì)象，通過(guò)布置結(jié)構(gòu)健康監(jiān)測(cè)系統(tǒng)，研究塔關(guān)鍵部位的應(yīng)力狀態(tài)和結(jié)構(gòu)動(dòng)力特性，監(jiān)測(cè)系統(tǒng)主要包括風(fēng)速風(fēng)向、應(yīng)力、加速度等監(jiān)測(cè)項(xiàng)，基于監(jiān)測(cè)結(jié)果分析了塔底部支座錨固區(qū)和塔身應(yīng)力狀態(tài)，采用頻譜分析法識(shí)別了結(jié)構(gòu)的動(dòng)力參數(shù)。結(jié)果表明自立發(fā)射塔底部支座錨固區(qū)和塔身應(yīng)力變化值均較小，實(shí)測(cè)結(jié)構(gòu)頻率與按規(guī)范中的經(jīng)驗(yàn)公式計(jì)算結(jié)果較吻合。

［關(guān)鍵詞］自立發(fā)射塔； 結(jié)構(gòu)健康監(jiān)測(cè)； 動(dòng)力特性； 頻譜分析

中圖分類(lèi)號(hào)：TU317+.2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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

作者簡(jiǎn)介：馬玉忠，本科，高級(jí)信息系統(tǒng)項(xiàng)目管理師，Email: mayuzhongx@163.com。