Tendon model for nonlinear analysis of prestressed concrete structures

Citation
Xh. Wu et al., Tendon model for nonlinear analysis of prestressed concrete structures, J STRUC ENG, 127(4), 2001, pp. 398-405
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Civil Engineering
Journal title
JOURNAL OF STRUCTURAL ENGINEERING-ASCE
ISSN journal
0733-9445 → ACNP
Volume
127
Issue
4
Year of publication
2001
Pages
398 - 405
Database
ISI
SICI code
0733-9445(200104)127:4<398:TMFNAO>2.0.ZU;2-D
Abstract
A tendon model based on the finite-element method, that can represent the i nteraction between tendon and concrete of the prestressed concrete member, is proposed. Especially for multitendon cases, this model is capable of sim ulating the slip of tendon in concrete duct so it can deal with the prestre ssing transfer of posttensioned structures and calculate unbonded prestress ed structures more efficiently. Another relevant model is also proposed to represent friction and bond at the interface of tendon and concrete. By usi ng these models, a numerical procedure is established for material and geom etric nonlinear analysis of prestressed concrete structures, including time -dependent effects due to load history, relaxation of prestress, and creep and shrinkage of concrete. The procedure can predict the responses of prete nsioned and bonded or unbonded posttensioned plane concrete structures such as elastic and plastic deformation, cracking, and damage patterns througho ut their prestressing transfer and service-load history. A numerical exampl e is presented to demonstrate the validity and efficiency of the present me thod. Comparison of computed results with experimental ones shows good agre ement.