Monitoring of a steel incrementally launched bridge construction with strain and temperature FBGs sensors

被引：3

作者：

Bueno, Antonio ^{[1
]}

Torres, Benjamin ^{[2
]}

Barrera, David ^{[1
]}

Calderon, Pedro ^{[2
]}

Sales, Salvador ^{[1
]}

机构：

[1] Univ Politecn Valencia, iTEAM, Camino Vera S-N, Valencia 46022, Spain

[2] Univ Politecn Valencia, ICITECH, Valencia 46022, Spain

来源：

OPTICAL SENSING AND DETECTION | 2010年 / 7726卷

关键词：

FBG sensor; strain optical sensor; temperature optical sensor; incrementally launched bridge; BRAGG GRATING SENSORS; OPTICAL-FIBER;

D O I：

10.1117/12.854575

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present in this paper the results of monitoring the construction process of a steel incrementally launched bridge located at the Kadagua Valley in Bilbao (Spain) with FBG sensors. The installation of FBG strain and temperature sensors was done in order to obtain deformation and temperature variations during the launching operation. The deflection recovery process was also monitored. The setup carried out in the sensors installation process consists of five optical channels (one for each cross section monitored) and a multiplexed structure of nine strain sensor in each optical channel. Temperature sensors were also installed in order to measure temperature variation of the steel structure but also for thermal compensation for the FBG strain sensors. The installation of the optical sensors is explained in detail including cleaning, bonding and connection of the almost fifty sensors installed in this structure. We also are going to explain the behaviour of the steel structure by presenting several figures showing the strain values for each sensor taken in real time during the launching of the bridge.

引用

页数：8

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