超长环形钢框架结构温度效应研究
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摘要
基于复杂超长环形结构的实例,采用MIDAS Gen有限元软件对不同框架截面的结构和有无后浇带的结构进行分析,并给出了整体变形、楼板应力、框架内力等分析结果。在分析结果基础上,阐述了此类结构温度应力和温度变形分布规律性,并探讨此类结构变形成分组成特点;通过比较不同模型楼板应力,总结框架刚度分布与楼板应力水平的关系,并分析设置后浇带对框架梁内力的影响。得到的结论主要有楼板配筋方法、柱子截面选择原则以及后浇带工况下钢梁轴力设计校核,对类似超长环形结构设计有一定参考价值。
Based on the example of complex and super-long ring structure, the structures with different frame sections and the structure with or without post-pouring belt were analyzed by using MIDAS Gen finite element software. The analysis results of global deformation, floor stress and internal force of the frame were given. On the basis of analysis results, the distribution regularity of temperature stress and temperature deformation of this kind of structure was elaborated, and the composition characteristics of displacement components were discussed. By comparing the slab stresses of different models, the relationship between the column stiffness distribution of the frame and the stress level of the floor was summarized. At the same time, the influence of setting post-pouring belt on the internal force of frame beam was analyzed. The main conclusions include the reinforcement method of floor slab, the selection principle of column section and the design and verification of steel beam axial force under the condition of post-pouring belt were obtained. The conclusion has some reference value for the design of similar super-long ring structure.
Based on the example of complex and super-long ring structure, the structures with different frame sections and the structure with or without post-pouring belt were analyzed by using MIDAS Gen finite element software. The analysis results of global deformation, floor stress and internal force of the frame were given. On the basis of analysis results, the distribution regularity of temperature stress and temperature deformation of this kind of structure was elaborated, and the composition characteristics of displacement components were discussed. By comparing the slab stresses of different models, the relationship between the column stiffness distribution of the frame and the stress level of the floor was summarized. At the same time, the influence of setting post-pouring belt on the internal force of frame beam was analyzed. The main conclusions include the reinforcement method of floor slab, the selection principle of column section and the design and verification of steel beam axial force under the condition of post-pouring belt were obtained. The conclusion has some reference value for the design of similar super-long ring structure.
引文
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[9]景辉,金来建,谢军,等.平面为开口环形结构的温度应力分析研究[J].建筑结构, 2013, 43(S1):672-676.
[10]王铁梦.工程结构裂缝控制[M].北京:中国建筑工业出版社.
[2]郑晓芬.环形超长混凝土温度问题研究[J].结构工程师, 2006, 22(6):11-13.
[3]郑毅敏.某体育场环形超长结构问题研究温度应力分析[J].结构工程, 2007, 23(4):31-34.
[4]张玉明,边广生,孟少平.平面形状为圆环形的混凝土框架结构温度应力研究[J].工程力学,2011,28(S1):136-140.
[5]李夏,范重,牟在根.超长结构温度作用取值及影响分析[C]//第十六届全国现代结构工程学术研讨会论文集.聊城, 2016.
[6]建筑结构荷载规范:GB50009—2012[S].北京:中国建筑工业出版社, 2012.
[7]李鸿猷.高层建筑结构日照影响的探索[J].建筑结构学报, 1989, 10(3):52-68.
[8]郑毅敏,张盼盼,赵昕,等.上海中心大厦日照温差效应分析[J].建筑结构2011, 41(5):28-32.
[9]景辉,金来建,谢军,等.平面为开口环形结构的温度应力分析研究[J].建筑结构, 2013, 43(S1):672-676.
[10]王铁梦.工程结构裂缝控制[M].北京:中国建筑工业出版社.