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为了在实际设计工作中,对钢筋混凝土框架梁构件进行基于性能的抗震设计方法,采用梁截面变形(曲率)作为设计参数进行抗震设计。对变换不同设计参数的梁构件截面进行了非线性变形分析,确定了梁构件截面的变形能力。根据分析结果对梁构件截面定义了三个性能点:屈服点、名义峰值点和变形极限点,并分析了性能点的影响因素,给出了实用计算方法。直接以梁构件截面的性能点进行基于性能的抗震设计,可使设计简单、物理意义明确。
In order to carry out the performance-based seismic design method of RC frame members, the deformation of the beam section (curvature) is taken as the design parameter for seismic design. The nonlinear deformation analysis of beam members with different design parameters is carried out, and the deformation capacity of beam members is determined. According to the analysis results, three performance points are defined for the cross section of beam members: yield point, nominal peak point and deformation limit point, and the influencing factors of performance point are analyzed. Practical calculation methods are given. Performing performance-based seismic design directly at the performance point of beam member cross-section allows for easy design and a clear physical meaning.