Sensor placement of long-term health monitoring for large bridges based on the real-time correction of finite element model |
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| Authors: | CHEN Yue ZHOU Jian-ting and SHEN Pei-wen |
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| Institution: | College of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing 400074, P.R. China;College of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing 400074, P.R. China;Chongqing Construction Science Research Institute, Chongqing 400015, P.R. China |
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| Abstract: | The process of optimized placement of long-term health monitoring sensors for large bridges generally begins with finite element models, but there will arise great discrepancies between theoretically-calculated results and actual measurements. Therefore, rectified finite element models need to be rectified by virtue of model rectifying technology. Firstly, the result of construction monitoring and finished state load test is used to real-time modification of finite element model. Subsequently, an accurate finite element model is established. Secondly, the optimizing the layout of sensor with following orthogonality guarantees orthogonal property and linear independence for the measured data. Lastly, the effectiveness and feasibility of method in the paper is tested by real-time modifying finite element model and optimizing the layout of sensor for Nujiang Bridge. |
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| Keywords: | large bridges health monitoring real-time correction optimal sensor placement |
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