Statistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams

Stress is one of the most important physical indexes reflecting the mechanical behavior of concrete structures. In general, stress in structures cannot be directly monitored and can only be estimated through an established model of stress and strain. The accuracy of the estimated stress depends on t...

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Autores principales:	Huibing Xie, Bing Han, Wutong Yan, Peng Jiang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	bridge monitoring pre-stressed concrete beams statistic inverse theory stress estimation monitored strain creep Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/7cf5b5693d894023aca1d636b2b11a03
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spelling	oai:doaj.org-article:7cf5b5693d894023aca1d636b2b11a032021-11-11T15:13:24ZStatistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams10.3390/app1121101612076-3417https://doaj.org/article/7cf5b5693d894023aca1d636b2b11a032021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10161https://doaj.org/toc/2076-3417Stress is one of the most important physical indexes reflecting the mechanical behavior of concrete structures. In general, stress in structures cannot be directly monitored and can only be estimated through an established model of stress and strain. The accuracy of the estimated stress depends on the rationality of the established model for stress and strain. As the strain measured by sensors contains creep, shrinkage, and elastic strain, it is difficult to establish an analytical model for strain and stress. In this paper, a statistical inverse method was utilized to estimate the stress in continuously pre-stressed concrete beams based on the monitored strain. Stress in the beams and the model uncertainty factors were treated as model parameters. A linear-simplified method was adopted to determine the prior distribution of the stresses. The posterior distribution of the stresses at different locations during bridge construction can be obtained by the proposed method. A continuously pre-stressed concrete beam bridge was taken as the case study to verify the effectiveness of the proposed method. Additionally, the constitution of the total strain in the different construction stages was calculated. It was concluded that the creep strain is the dominant part of the total strain.Huibing XieBing HanWutong YanPeng JiangMDPI AGarticlebridge monitoringpre-stressed concrete beamsstatistic inverse theorystress estimationmonitored straincreepTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10161, p 10161 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bridge monitoring pre-stressed concrete beams statistic inverse theory stress estimation monitored strain creep Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	bridge monitoring pre-stressed concrete beams statistic inverse theory stress estimation monitored strain creep Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Huibing Xie Bing Han Wutong Yan Peng Jiang Statistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams
description	Stress is one of the most important physical indexes reflecting the mechanical behavior of concrete structures. In general, stress in structures cannot be directly monitored and can only be estimated through an established model of stress and strain. The accuracy of the estimated stress depends on the rationality of the established model for stress and strain. As the strain measured by sensors contains creep, shrinkage, and elastic strain, it is difficult to establish an analytical model for strain and stress. In this paper, a statistical inverse method was utilized to estimate the stress in continuously pre-stressed concrete beams based on the monitored strain. Stress in the beams and the model uncertainty factors were treated as model parameters. A linear-simplified method was adopted to determine the prior distribution of the stresses. The posterior distribution of the stresses at different locations during bridge construction can be obtained by the proposed method. A continuously pre-stressed concrete beam bridge was taken as the case study to verify the effectiveness of the proposed method. Additionally, the constitution of the total strain in the different construction stages was calculated. It was concluded that the creep strain is the dominant part of the total strain.
format	article
author	Huibing Xie Bing Han Wutong Yan Peng Jiang
author_facet	Huibing Xie Bing Han Wutong Yan Peng Jiang
author_sort	Huibing Xie
title	Statistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams
title_short	Statistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams
title_full	Statistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams
title_fullStr	Statistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams
title_full_unstemmed	Statistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams
title_sort	statistical inversion approach for stress estimation based on strain monitoring in continuously pre-stressed concrete beams
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7cf5b5693d894023aca1d636b2b11a03
work_keys_str_mv	AT huibingxie statisticalinversionapproachforstressestimationbasedonstrainmonitoringincontinuouslyprestressedconcretebeams AT binghan statisticalinversionapproachforstressestimationbasedonstrainmonitoringincontinuouslyprestressedconcretebeams AT wutongyan statisticalinversionapproachforstressestimationbasedonstrainmonitoringincontinuouslyprestressedconcretebeams AT pengjiang statisticalinversionapproachforstressestimationbasedonstrainmonitoringincontinuouslyprestressedconcretebeams
_version_	1718436385012056064

Statistical Inversion Approach for Stress Estimation Based on Strain Monitoring in Continuously Pre-Stressed Concrete Beams

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