小震作用下钢筋混凝土框架的时程可靠度分析

Time-History Reliability Analysis of Reinforced Concrete Frames under Frequent Earthquakes

将地震地面运动作为随机过程,采用时域离散化手段,将改进虚拟变量法与矩阵位移法、时程分析法相结合,提出小震作用下钢筋混凝土框架结构的时程可靠度分析方法.该方法能考虑地震动和结构参数的双重随机性,可进行地震全过程的可靠度分析.算例分析表明了该方法的有效性.

By taking earthquake motions as a random process and through time dispersion, a method combining improved pseudo variable method, matrix displacement method and timehistory method is proposed to analyze the timehistory reliability of reinforced concrete frames that are under frequent earthquakes. This method takes the randomicity of earthquake motions and structural parameters into account, and can be used for reliability analysis of the whole process of an earthquake. An example shows the validity of the method.