（西安建筑科技大学理学院， 西安 710055）

［摘要］在多尺度计算方法的基础上提出了一种精确、高效的结构局部精细化计算方法，并采用通用有限元软件ABAQUS建立一钢框架的精细化模型、多尺度模型、基于子结构的多尺度模型和宏观模型进行受力分析。分析结果表明，基于子结构的多尺度模型能够达到与多尺度模型相同的计算精度，同时能够大大提高计算效率减少计算时间，并且计算容易收敛。基于子结构的多尺度模型为复杂结构关键构件的应力分析提供了一种新方法。

［关键词］多尺度； 子结构； 高效率计算； 钢框架

中图分类号： TU311.41 文献标识码： A文章编号：  1002-848X(2016)S2-0387-04

High efficient calculation method study of substructure-based multi-scale model

Liu Junqing, Qiao Longbang, Zhu Chao, Liu Kai

(School of Science, Xi′an University of Architecture & Technology, Xi′an 710055, China)

Abstract: An accurate and efficient calculation method is proposed based on the multi-scale method to analyze local joint. Fine finite element model, multi-scale model, substructure-based multi-scale model and macro model is developed in the general finite element software ABAQUS to analyze one and the same steel frame.The results show that: substructure-based multi-scale model has the same accuracy with multi-scale model, while the former has a high computational efficient and easy to convergence. This study provides a new method to analyze key joint of complex high-rise building.

Keywords: multi-scale; substructure; high efficiency calculation; steel frame