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http://dx.doi.org/10.4334/JKCI.2008.20.6.697

Analytical Method on PSC I Girder with Strengthening of External Tendon  

Park, Jae-Guen (Dept. of Civil Engineering, Sungkyunkwan University)
Lee, Byeong-Ju (Korea Expressway Transportation & Technology Institute)
Kim, Moon-Young (Dept. of Civil Engineering, Sungkyunkwan University)
Shin, Hyun-Mock (Dept. of Civil Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korea Concrete Institute / v.20, no.6, 2008 , pp. 697-704 More about this Journal
Abstract
This paper presents an analytical prediction of Nonlinear characteristics of prestressed concrete bridges by strengthened of externally tendon considering construction sequence, using unbonded tendon element and beam-column element based on flexibility method. Unbonded tendon model can represent unbounded tendon behavior in concrete of PSC structures and it can deal with the prestressing transfer of posttensioned structures and calculate prestressed concrete structures more efficiently. This tendon model made up the several nodes and segment, therefore a real tendon of same geometry in the prestressed concrete structure can be simulated the one element. The beam-column element was developed with reinforced concrete material nonlinearities which are based on the smeared crack concept. The fiber hysteresis rule of beam-column element is derived from the uniaxial constitutive relations of concrete and reinforcing steel fibers. The formulation of beam-column element is based on flexibility. Beam-column element and unbonded tendon element were be involved in A computer program, named RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology), that were used the analysis of RC and PSC structures. The proposed numerical method for prestressed concrete structures by strengthened of externally tendon is verified by comparison with reliable experimental results.
Keywords
externally tendon; construction sequence; unbonded tendon element; fiber beam-column element; PSC structure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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