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Article: Efficient single-step time-dependent analysis of PC structures
Title | Efficient single-step time-dependent analysis of PC structures |
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Authors | |
Keywords | Mathematical modelling Cables & tendons Concrete structures |
Issue Date | 2012 |
Publisher | Thomas Telford (ICE Publishing). The Journal's web site is located at http://www.icevirtuallibrary.com/content/serial/eacm |
Citation | Proceedings of the Institution of Civil Engineers: Engineering and Computational Mechanics, 2012, v. 165 n. 2, p. 89-102 How to Cite? |
Abstract | This paper describes an efficient single-step method to predict the time-dependent behaviour of prestressed concrete (PC) structures due to concrete creep, concrete shrinkage and cable relaxation. A versatile tendon sub-element is first developed to model prestressing cables of arbitrary profiles. To enable accurate estimation of losses of cable forces, a new relaxation model is formulated based on the equivalent creep coefficient, which is verified to work not only in the case of intrinsic relaxation but also under various boundary conditions. An efficient single-step finite-element method is then devised for time-dependent analysis of PC structures considering creep, shrinkage and relaxation based on the age-adjusted elasticity modulus, shrinkage-adjusted elasticity modulus and relaxation-adjusted elasticity modulus respectively. The effects of creep, shrinkage and relaxation on the long-term performance of PC structures are investigated. The numerical results obtained indicate not only the accuracy of the method but also the significance of considering the interaction among various time-varying factors. |
Persistent Identifier | http://hdl.handle.net/10722/163888 |
ISSN | 2023 Impact Factor: 1.1 2023 SCImago Journal Rankings: 0.217 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Si, X | en_US |
dc.contributor.author | Au, FTK | en_US |
dc.contributor.author | Tsang, NCM | en_US |
dc.date.accessioned | 2012-09-20T07:52:46Z | - |
dc.date.available | 2012-09-20T07:52:46Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Proceedings of the Institution of Civil Engineers: Engineering and Computational Mechanics, 2012, v. 165 n. 2, p. 89-102 | en_US |
dc.identifier.issn | 1755-0777 | - |
dc.identifier.uri | http://hdl.handle.net/10722/163888 | - |
dc.description.abstract | This paper describes an efficient single-step method to predict the time-dependent behaviour of prestressed concrete (PC) structures due to concrete creep, concrete shrinkage and cable relaxation. A versatile tendon sub-element is first developed to model prestressing cables of arbitrary profiles. To enable accurate estimation of losses of cable forces, a new relaxation model is formulated based on the equivalent creep coefficient, which is verified to work not only in the case of intrinsic relaxation but also under various boundary conditions. An efficient single-step finite-element method is then devised for time-dependent analysis of PC structures considering creep, shrinkage and relaxation based on the age-adjusted elasticity modulus, shrinkage-adjusted elasticity modulus and relaxation-adjusted elasticity modulus respectively. The effects of creep, shrinkage and relaxation on the long-term performance of PC structures are investigated. The numerical results obtained indicate not only the accuracy of the method but also the significance of considering the interaction among various time-varying factors. | - |
dc.language | eng | en_US |
dc.publisher | Thomas Telford (ICE Publishing). The Journal's web site is located at http://www.icevirtuallibrary.com/content/serial/eacm | en_US |
dc.relation.ispartof | Proceedings of the Institution of Civil Engineers: Engineering and Computational Mechanics | en_US |
dc.rights | Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees | - |
dc.subject | Mathematical modelling | - |
dc.subject | Cables & tendons | - |
dc.subject | Concrete structures | - |
dc.title | Efficient single-step time-dependent analysis of PC structures | en_US |
dc.type | Article | en_US |
dc.identifier.email | Au, FTK: francis.au@hku.hk | en_US |
dc.identifier.authority | Au, FTK=rp00083 | en_US |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1680/eacm.10.00030 | - |
dc.identifier.scopus | eid_2-s2.0-84879962470 | - |
dc.identifier.hkuros | 209130 | en_US |
dc.identifier.volume | 165 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.spage | 89 | en_US |
dc.identifier.epage | 102 | en_US |
dc.identifier.isi | WOS:000215452200004 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 1755-0777 | - |