| Title |
Layered Section Analysis for PSC Girder with Variable Cross Section Using SI Technique |
| Keywords |
sectional analysis;prestressed concrete girder;nonlinear inelastic analysis;static load test;varying cross section;단면해석;프리스트레스 콘크리트 보;비선형 비탄성 해석;정재하실험;변단면 |
| Abstract |
This study introduces a layered sectional analysis for a PSC girder with a vaiable cross section and curved tendons. To consider the shear equilibrium at a concrete layer with curved tendons, the shear stress distribution has been computed at each section. In addition, to improve the convergence to the solution, a system identification technique is newly adopted in the solution process for strain computation. To examine the feasibility of the proposed approach, a static load test has been conducted for a full scale PSC girder with variable cross section. The prediction shows a good agreement with experiment. It is seen that a uniform cross section has the same moment capacity with a variable cross section while the variable cross section has more shear capacity than the uniform cross section. It is also noted that the maximum displacement of a variable cross section is a little smaller than a uniform cross section. |