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A platform for research: civil engineering, architecture and urbanism
Indirect Estimation Method of Bridge Displacement Under Moving Vehicle Based on Measured Acceleration
Direct measurement of dynamic displacement during bridges load testing usually is time-consuming, expensive and sometimes is difficult to perform. This paper proposes an indirect measurement method of bridge dynamic displacement by acceleration integration. The dynamic-static separation processing and a multi-round baseline correction technique based on least squares method are used in the proposed approach. After the baseline of measured acceleration data is corrected totally, the filter is used to eliminate high frequency noise and separate quasi-static and free vibration response before integrating. Considering the natural difference between dynamic and static response an innovative effective baseline correction method is established during acceleration integration process. The accuracy and feasibility of proposed displacement estimated method is verified based on a real bridge in-situ dynamic load test. The results indicate that the proposed method has a satisfied accuracy and can be applied in engineering practice.
Indirect Estimation Method of Bridge Displacement Under Moving Vehicle Based on Measured Acceleration
Direct measurement of dynamic displacement during bridges load testing usually is time-consuming, expensive and sometimes is difficult to perform. This paper proposes an indirect measurement method of bridge dynamic displacement by acceleration integration. The dynamic-static separation processing and a multi-round baseline correction technique based on least squares method are used in the proposed approach. After the baseline of measured acceleration data is corrected totally, the filter is used to eliminate high frequency noise and separate quasi-static and free vibration response before integrating. Considering the natural difference between dynamic and static response an innovative effective baseline correction method is established during acceleration integration process. The accuracy and feasibility of proposed displacement estimated method is verified based on a real bridge in-situ dynamic load test. The results indicate that the proposed method has a satisfied accuracy and can be applied in engineering practice.
Indirect Estimation Method of Bridge Displacement Under Moving Vehicle Based on Measured Acceleration
Lecture Notes in Civil Engineering
Wu, Zhishen (editor) / Nagayama, Tomonori (editor) / Dang, Ji (editor) / Astroza, Rodrigo (editor) / Wang, Mingwei (author) / Li, Yan (author) / Lin, Guowei (author) / Liu, Baocheng (author) / Ye, Changyun (author)
Experimental Vibration Analysis for Civil Engineering Structures ; Chapter: 19 ; 207-221
2022-08-24
15 pages
Article/Chapter (Book)
Electronic Resource
English
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