空冷凝汽器支架结构管柱抗震性能研究  

STUDY ON SEISMIC BEHAVIOR OF TUBULAR REINFORCED CONCRETE COLUMNS OF AIR-COOLED SUPPORT STRUCTURE

作　　者：杜宁军 

机构地区：[1]西安建筑科技大学,西安710055

出　　处：《低温建筑技术》2013年第7期63-65,共3页Low Temperature Architecture Technology

摘　　要：对应用于空间钢桁架空冷凝汽器支架结构的大尺寸、小壁径比钢筋混凝土管柱的抗震性能进行了试验及数值模拟。制作了四个缩尺比为1/8的钢筋混凝土管柱试件,并进行了拟静力试验,得出了各试件的滞回曲线、骨架曲线等。利用OpenSees对钢筋混凝土管柱进行了低周反复加载条件下的非线性分析。结果显示,计算所得的滞回曲线、骨架曲线与试验所得的曲线大体吻合,这表明通过OpenSees所建立的空心管柱有限元模型能够比较好地模拟这种大尺寸、小壁径比钢筋混凝土管柱的受力以及耗能性能。The seismic behavior of great-size thin-wall tubular reinforced concrete columns used by air-cooled condenser support system is experimentaUy and numerically investigated. Fistly, four specimens 1/8 of prototype reinforced concrete columns are fabricated. Then, they are tested under repeated horizontal load with constant axial loads. Finally, the nonlinear finite element models are established to simulate the seismic behavior of great-size thin-wall tubular reinforced concrete under low-cycle and reverse horizontal loading test by using OpenSees. The results show that the hysteretic curves and skeleton curves match well with the experimental curves, so the nonlinear finite element model could accurately simulate the seismic behavior of tubular reinforced concrete columns.

关 键 词：空冷凝汽器支架结构 钢筋混凝土管柱 OPENSEES 

分 类 号：TU391[建筑科学—结构工程]