| Status | 已發表Published |
| Bayesian Updating of The soil parameters in finite element modeling for a multistage excavation | |
Tan, F. ; Zhou, W. H.  ; Yuen, K. V.
| |
| 2015 | |
| Source Publication | Proceedings of the second international conference on sustainable urbanization
 |
| Pages | 98-98 |
| Publication Place | Hong Kong |
| Publisher | The Hong Kong Polytechnic University |
| Abstract | Back-analysis is usually performed based on field observations or measurements for important and/or challenging excavation projects. However, the field measurement data often involve significant uncertainties originated from many factors, such as the poorly known soil parameters, substantial modeling error, and construction variability. The predictions of the wall and ground responses, even those made with advanced finite element modeling, often fail to match the observed responses at the end of the excavation stage. In order to consider these uncertainties in the finite element modeling, the Bayesian approach is adopted to update the soil parameters in finite element modeling for a multi-stage excavation project, and their posterior distributions are obtained by using the Markov chain Monte Carlo (MCMC) simulation method with the Metropolis-Hastings algorithm. In this process, the Bayesian updating of soil parameters is realized in multiple stages. The measured lateral deformations along a bored pile shaft at each excavation stage are used to update the soil parameters used in the finite element modeling and then the updated parameters are used to predict the responses of the subsequent excavation stages. |
| Keyword | back-analysis bayesian approach multistage excavation Markov chain monte carlo simulation |
| Language | 英語English |
| The Source to Article | PB_Publication |
| PUB ID | 14524 |
| Document Type | Conference paper |
| Collection | GRADUATE SCHOOL DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING |
| Corresponding Author | Zhou, W. H. |
| Recommended Citation GB/T 7714 | Tan, F.,Zhou, W. H.,Yuen, K. V.. Bayesian Updating of The soil parameters in finite element modeling for a multistage excavation[C], Hong Kong:The Hong Kong Polytechnic University, 2015, 98-98. |
| APA | Tan, F.., Zhou, W. H.., & Yuen, K. V. (2015). Bayesian Updating of The soil parameters in finite element modeling for a multistage excavation. Proceedings of the second international conference on sustainable urbanization, 98-98. |
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