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(1 浙江大學空間結構研究中心, 杭州 310058;2 中國建筑設計研究院有限公司, 北京 100044;3 中國鐵路設計集團有限公司, 天津 300308)
[摘要]雄安站屋蓋呈橢圓形平面,長軸為450m,短軸為355.5m,其主體結構采用大跨度空間鋼結構體系。為了探究該屋蓋結構實際受力與變形狀態,提高結構運營期間的安全性,設計并開發針對雄安站屋蓋結構的無線健康監測系統。詳細介紹傳感器選型和測點布設方案,建立以應變、位移和溫度傳感器為基礎的全方位結構健康監測感知層,構建以傳感器節點、通信路由節點與基站進行數據信息交互的樹形網絡拓撲傳輸層,開發集成數據查詢、設備管理和報警維護等多種功能的結構監測智慧平臺分析層?,F場實測數據的分析結果驗證了該無線健康監測系統的有效性。該無線健康監測系統的應用,實現了對結構狀態的實時掌握,有助于保障雄安站的安全運維。
[關鍵詞]雄安站;健康監測;無線監測系統;大跨空間鋼結構
中圖分類號:TU393-3 文獻標識碼:A文章編號:1002-848X(2021)24-0021-05
Design and development of wireless health monitoring system for roof steel structure of Xiong’an Railway Station
LUO Yaozhi1, ZHAO Jingyu1, FAN Zhong2, SONG Zhiwen3, SHEN Yanbin1, CAI Pengcheng1, ZHANG Yu2, ZHU Dan2
(1 Space Structures Research Center, Zhejiang University, Hangzhou 310058, China;2 China Architecture Design and Research Group, Beijing 100044, China;3 China Railway Design Corporation, Tianjin 300308, China)
Abstract: The roof of Xiong’an Railway Station is elliptical in plan, with a long axis of 450m and a short axis of 355.5m, and its main structure is a large-span space steel structural system. In order to investigate the actual force state and deformation of this roof structure and improve the safety of the structure during operation, a wireless health monitoring system was designed and developed for the steel structure of Xiong’an Railway Station. The sensor selection and measurement point deployment plan were introduced in detail, and an all-round structural health monitoring sensing layer based on strain, displacement, and temperature sensors was established. A tree network topology transmission layer was built with sensor nodes, communication routing nodes and base stations for data information interaction. And a structural monitoring cloud platform analysis layer with integrated data query, equipment management, alarm maintenance and other functions was developed. The analysis results of the field-measured data verify the effectiveness of this wireless health monitoring system. The application of this wireless health monitoring system realizes the real-time mastering of the status of the structure, which contributes to guaranteeing the safe operation and maintenance of the Xiong’an Railway Station.
Keywords:Xiong’an Railway Station; health monitoring; wireless monitoring system; large-span space steel structure
*十三五國家重點研發計劃(2017YFC0806100)。
作者簡介:羅堯治,博士,教授,博士生導師,Email: luoyz@zju.edu.cn。