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考虑地震动的随机性对层间隔震结构损伤破坏造成的差异性,选取16条随机地震动,利用Open SEES平台分别对两种隔震结构进行增量动力分析,同时结合改进的Park-Ang局部损伤模型和加权秩和比的统计分析方法分别对层间隔震结构和柱顶隔震结构的损伤破坏模式进行统计分析。研究表明:两种隔震结构的失效均主要表现为隔震层支座、上部子结构梁构件和下部子结构柱构件的损伤破坏,但两种结构各子结构的损伤破坏顺序和破坏机理存在很大差异。层间隔震结构的主要破坏模式顺序依次为:隔震层、上部子结构梁构件、下部子结构柱构件;而柱顶隔震结构破坏依次为上部子结构梁构件、隔震层、下部子结构柱构件。
Taking into account the randomness of ground motion caused by the damage caused by the damage of the interlaced base isolation structure, 16 random ground motions are selected and the incremental dynamic analysis of the two isolation structures is carried out by using the Open SEES platform. Combined with the improved Park-Ang local The damage model and weighted rank sum ratio method are used to analyze the damage modes of the seismic isolation structure and the seismic isolation structure. The results show that the failure of the two kinds of isolation structures are mainly the damage of the isolation bearing, the upper sub-structure beam and the lower sub-structure. However, the damage order and failure mechanism exist in the two sub-structures Huge difference. The order of the main failure modes of the interlaced seismic isolation structure is as follows: the isolation layer, the upper substructure beam component and the lower substructure column component; and the failure of the top seismic isolation structure is in turn the upper substructure beam component, the isolation layer and the lower substructure Column member.