Modeling Parameters for Nonlinear Behavior of Members with FRP and the Seismic Evaluation of Non-ductile Reinforced Concrete Buildings

• Main Authors: Tai-Lang Lo, 羅太郎
• Other Authors: Bin-Chan Lin
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/48060488744145230542

碩士 === 中原大學 === 土木工程研究所 === 95 === ABSTRACT Seismic capacities of buildings are based on the ductile ability of members. However many old buildings were lacked of seismic design concept in initially design or did not follow the requirements of building code in the construction. Then caused to non-ductile of members, such as transverse reinforcement spacing was too large in the plastic hinge region of members, or transverse reinforcement with 90° hook, or beam-column joint zone lack of shear reinforcement, or spliced reinforcement or anchorage length not enough, or concrete quality poor or cover not enough for the reinforcement etc. Concrete members retrofitted with FRP are the one of ways to enforce its ductile ability or strength. This study is to simulate the nonlinear behavior of members, based on concrete constitutive laws with FRP, to calculate concrete maximum strain and the plastic hinge rotation of members. In the meanwhile, the capacity curvature of buildings is obtained by the procedure of nonlinear pushover analysis of ETABS. Furthermore, we can estimate for the seismic evaluation of old buildings after retrofitted by the FRP by the method of capacity spectrum to obtain intersection point of the demand spectrum.