钢筋混凝土平板-T形柱结构的等效梁法计算模型研究
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摘要
为了解决现有的钢筋混凝土板柱结构计算模型存在的问题,运用ETABS分析程序对不同柱网尺寸、不同楼层总高度的典型的钢筋混凝土平板-T形柱结构采用等效梁方法进行简化建模分析,并将分析结果和运用ETABS分析程序的杆壳单元模拟的相应结构模型的分析结果进行比较,对这种简化方法进行了评价,并提出了能够反映在水平荷载和竖直荷载共同作用下板柱结构受力变形特征的计算模型。分析表明,现有等效梁方法能够反映板柱结构的受力变形特征,只是模拟结果不稳定且绝大部分结果偏刚;等效梁的宽度取值主要与所考察受力方向的结构跨度、结构层高和总高度有关。
In order to solve the problem existed in calculating model of reinforced concrete flat slab-column structures,the typical reinforced concrete flat slab-T-shaped column structures with a series of span sizes and story heights were modeled and analyzed by ETABS analysis program according to equivalent beam method.The analysis results were compared with the results of relevant models made by shaft-shell element in ETABS analysis program.The simplify method was evaluated,and the calculating model was put forward,which can fairly analogue the deformation features of flat slab-column structures loaded by horizontal and vertical loads.The analysis result shows that the current equivalent beam method can analogue the deformation features of flat slab-column structures,although the results are unstable and mainly more stiffness.The width of equivalent beam section is dependent on the parameters such as the span in the action direction and story height and total height of structures.
In order to solve the problem existed in calculating model of reinforced concrete flat slab-column structures,the typical reinforced concrete flat slab-T-shaped column structures with a series of span sizes and story heights were modeled and analyzed by ETABS analysis program according to equivalent beam method.The analysis results were compared with the results of relevant models made by shaft-shell element in ETABS analysis program.The simplify method was evaluated,and the calculating model was put forward,which can fairly analogue the deformation features of flat slab-column structures loaded by horizontal and vertical loads.The analysis result shows that the current equivalent beam method can analogue the deformation features of flat slab-column structures,although the results are unstable and mainly more stiffness.The width of equivalent beam section is dependent on the parameters such as the span in the action direction and story height and total height of structures.
引文
1朱聘儒.双向板无梁楼盖.北京:中国建筑工业出版社,1999
2 JGJ/T92-93无粘结预应力混凝土结构技术规程
3郑文忠,俞伟根,吕志涛.后张预应力混凝土平板-柱结构合理计算模式和方法的研究.工程力学,1995,12(3):39-54
4吴强,程文禳.水平力作用下板柱结构等代梁计算宽度的研究.工业建筑,2004,34(3):77-79
5李俊兰,吕西林,周德源.地震作用下板柱结构等代框架法计算模型的研究.建筑结构学报,1999,20(1):39-45
6 Hwang SJ,Moehle J P.Vertical and Lateral Load Tests of a Nine-PanelFlat-Plate Frame.ACI Structure Journal,2000,97(1):193-203
7 Hwang S J,Moehle J P.Models for Laterally Loaded Slab-ColumnFrames.ACI Structure Journal,2000,97(2):345-352
8 Banchik C A.Effective Beam Width Coefficients for Equivalent FrameAnalysis of Flat-Plate Structures.ME Thesis,University of California atBerkeley,Calif.,1987:56
2 JGJ/T92-93无粘结预应力混凝土结构技术规程
3郑文忠,俞伟根,吕志涛.后张预应力混凝土平板-柱结构合理计算模式和方法的研究.工程力学,1995,12(3):39-54
4吴强,程文禳.水平力作用下板柱结构等代梁计算宽度的研究.工业建筑,2004,34(3):77-79
5李俊兰,吕西林,周德源.地震作用下板柱结构等代框架法计算模型的研究.建筑结构学报,1999,20(1):39-45
6 Hwang SJ,Moehle J P.Vertical and Lateral Load Tests of a Nine-PanelFlat-Plate Frame.ACI Structure Journal,2000,97(1):193-203
7 Hwang S J,Moehle J P.Models for Laterally Loaded Slab-ColumnFrames.ACI Structure Journal,2000,97(2):345-352
8 Banchik C A.Effective Beam Width Coefficients for Equivalent FrameAnalysis of Flat-Plate Structures.ME Thesis,University of California atBerkeley,Calif.,1987:56
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