鋼筋混凝土框架梁構(gòu)件基于性能的實用抗震設(shè)計方法
李 亞
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（中國中元國際工程公司, 北京 100089）[摘要] 為了在實際設(shè)計工作中，對鋼筋混凝土框架梁構(gòu)件進行基于性能的抗震設(shè)計方法，采用梁截面變形(曲率)作為設(shè)計參數(shù)進行抗震設(shè)計。對變換不同設(shè)計參數(shù)的梁構(gòu)件截面進行了非線性變形分析，確定了梁構(gòu)件截面的變形能力。根據(jù)分析結(jié)果對梁構(gòu)件截面定義了三個性能點：屈服點、名義峰值點和變形極限點，并分析了性能點的影響因素，給出了實用計算方法。直接以梁構(gòu)件截面的性能點進行基于性能的抗震設(shè)計，可使設(shè)計簡單，物理意義明確。[關(guān)鍵詞] 基于性能抗震設(shè)計; 鋼筋混凝土框架梁; 實用設(shè)計方法中圖分類號：TU375.3 文章標(biāo)識碼：A 文章編號：1002-848X(2013)S2-0414-04作者簡介：李亞，碩士，工程師，Email：liya@163.com。Performance-based seismic design practical method for RC frame beamsLi Ya(China IPPR International Engineering Corporation, Beijing 100089)Abstract: In order to give practical performance-based seismic design ( PBSD ) method, we used beam section deformation (curvature) as design parameters for seismic design. Based on the beam section nonlinear analysis, the beam section deformability was determined. The performance points were defined with yield point, nominal peak point and ultimate curvature point, based on the beam analysis results. We analyzed the influence factors of beam performance points, and give the practical calculation method of the performance points. It is simple and has clear physical significance that with beam section performance points parameters to do PBSD.Keywords: performance-based seismic design; RC frame beam; practical design method
