基于能量的框架-搖擺墻結構與框架-剪力墻結構地震反應分析對比
徐佳琦， 呂西林
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（1 同濟大學土木工程防災國家重點實驗室，上海 200092）[摘要] 搖擺墻結構作為一種新型的可恢復功能結構，近年來從理論分析到數(shù)值計算都進行了較多研究，但大多集中于研究搖擺墻結構在地震中的變形能力。已有研究表明地震動輸入能量以及結構耗能機理對于認識結構的地震反應特性具有重要意義。利用通用有限元軟件SAP2000，以相似的墻體布置分別建立13層框架-剪力墻結構和框架-搖擺墻結構模型，按照8度抗震設防要求進行彈塑性時程分析，得到二者層間位移曲線以及樓層剪力-位移曲線，再利用軟件OriginPro進行數(shù)據處理，得到結構滯回曲線及消耗的能量，從而表明以上兩結構各自耗能部位及所占比例。通過兩者的比較，證明了框架-搖擺墻結構的耗能更多依靠于搖擺墻整體擺動的動能、勢能和阻尼器的滯回耗能，抗震性能優(yōu)于框架-剪力墻結構。[關鍵詞] 框架-搖擺墻結構;框架-剪力墻結構; 彈塑性時程分析; 能量耗散; SAP2000中圖分類號：TU313.3 文獻標識碼：A 文章編號：1002-848X(2013)S2-0418-05作者簡介：徐佳琦，博士，Email：08xujiaqi@#edu.cnEnergy based seismic response of frame-rocking-wall structure and frame-shear-wall structureXu Jiaqi, Lu Xilin（The Key Laboratory for Disaster Mitigation in Civil Engineering, Tongji University, Shanghai 200092, China）Abstract：As a new branch of earthquake resilient structure, researches of rocking-wall structure have been carried out from theoretical analysis to numerical calculation in recent years, but most of which have been concentrated simply on the seismic deformation ability. Studies have shown that seismic input energy and the energy dissipation mechanism has great significance for understanding the seismic response characteristics. The seismic responses of a 13-story reinforced concrete (RC) frame with similar design of rocking-wall and shear-wall respectively were compared. Using the elastic-plastic time history analysis by general finite element software SAP2000, in accordance with the 8 degree earthquake, the result of displacement curve and shear force-displacement curve can be got. By the data analysis software OriginPro, the result of hysteretic curve and energy dissipation can be got, which can prove that the energy dissipation of rocking-wall structure relies on kinetic energy, potential energy and the damper more, and the seismic performance is better than the shear-wall structure.Keywords：frame-rocking-wall structure; frame-shear-wall structure; elastic-plastic time history analysis; energy dissipation; SAP2000
