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Research on Analysis Method of Mechanical Properties of Modular Steel Frame Based on Multi-Scale and Beam Elements
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摘要: 为探索装配式模块化钢框架结构的整体分析方法和适用性,利用ABAQUS有限元软件建立多尺度有限元模型进行静、动力分析,对比分析了梁单元、实体单元、多尺度节点计算模型的静力特性,并从模块结构的内力分析、模态分析两个方面对比梁单元、实体单元、多尺度框架计算模型的差异性。此外,将多尺度模型应用于模块化钢框架结构中进行动力弹塑性时程分析,对比分析了梁单元与多尺度框架6~12层模型的动力响应差异。分析结果表明:ABAQUS内置多点约束方法能够实现梁单元与实体单元之间连接;多尺度模型与实体单元的计算精度取得较好的一致性,二者相比,多尺度计算模型可增加约40%计算效率;动力模态分析表明,多尺度模型与实体单元振型的固有频率基本一致,验证了采用多尺度模型计算结果的可靠性;当模块结构层数超过10层,梁单元计算模型的计算精度大幅度降低,而多尺度计算模型计算精度呈稳定趋势。Abstract: In order to explore the analysis method and applicability of prefabricated modular steel frame structures, the multi-scale finite element model is established in the ABAQUS finite element software to analyze static and dynamic characteristic. The static characteristic of beam element, solid element and multi-scale joint calculation models are compared and analyzed. The differences of beam element, solid element and multi-scale frame calculation model are compared from two aspects of internal force analysis and model analysis of modular structure. In addition, the multi-scale model is applied to the dynamic elastic-plastic time history analysis of the modular steel frame structure, and the dynamic response differences between the beam element and the multi-scale frame 6 to 12-story model are compared and analyzed. The results show that internal multi-point constraint method in ABAQUS can achieve the connection between beam element and solid element; the calculation accuracy of the multi-scale model is in good agreement with that of the solid element. Comparing the two models, the multi-scale calculation model can increase the calculation efficiency by about 40%; the dynamic modal analysis shows that the natural frequencies of the multi-scale model and the solid element are basically the same, which verifies the reliability of the multi-scale model calculation results; when the number of modular structure floors exceeds 10, the calculation accuracy of the beam element calculation model is greatly reduced, while the calculation accuracy of the multi-scale calculation model is stable.
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Key words:
- modular steel frame /
- beam elements /
- solid elements /
- multi-scale elements /
- interface connection
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[1] Lacey A W,Chen W,Hao H,et al.Effect of inter-module connection stiffness on structural response of a modular steel building subjected to wind and earthquake load[J].Engineering Structures,2020[2020-06-15].https://doi.org/10.1016/j.engstruct.2020.110628. [2] Annan C D,Youssef M A,El Naggar M H.Experimental evaluation of the seismic performance of modular steel-braced frames[J].Engineering Structures,2009,31(7):1435-1446. [3] 陈志华,冯云鹏,刘佳迪,等.柱承重式钢模块建筑结构体系适用高度研究[J].建筑钢结构进展,2021,23(1):31-39. [4] 梁晓婕.模块化装配式钢框架结构动力特性分析[D].青岛:青岛理工大学,2021. [5] 陆新征,林旭川,叶列平.多尺度有限元建模方法及其应用[J].华中科技大学学报(城市科学版),2008(4):76-80. [6] 石永久,王萌,王元清.基于多尺度模型的钢框架抗震性能分析[J].工程力学,2011,28(12):20-26. [7] 王萌,石永久,王元清.强震下钢框架动力时程分析模型应用对比分析[J].土木工程学报,2012,45(增刊2):80-83. [8] 刘亮,吴晓涵,吴宏磊.基于多尺度模型的钢管混凝土节点抗震性能分析[J].结构工程师,2015,31(3):75-81. [9] 王开宇.基于多点约束的多尺度建模方法研究[D].哈尔滨:哈尔滨工业大学,2016. [10] 马青萍,王辉明.装配整体式框架结构多尺度分析和力学性能研究[J].工程抗震与加固改造,2022,44(1):15-21,143. [11] 张莹,孙广俊,李鸿晶.混凝土结构多尺度建模界面连接方法[J].东南大学学报(自然科学版),2015,45(1):126-132. [12] 刘明扬,王燕,郏书朔.新型模块化钢框架板式内套筒连接节点力学性能研究[J].钢结构,2018,33(1):1-5,10. [13] 庄妍,王康宇.基于von Mises屈服准则的结构安定性研究[J].地下空间与工程学报,2016,12(增刊1):170-174,191. [14] 中华人民共和国住房和城乡建设部.建筑结构荷载规范:GB 50009—2012[S].北京:中国建筑工业出版社,2010. [15] 中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010. [16] 中华人民共和国住房和城乡建设部.高层民用建筑钢结构技术规程:JGJ 99—2015[S].北京:中国建筑工业出版社,2010. -
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