空间结构二阶分析法与其在SAP2000程序中的实现
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（深圳市建筑设计研究总院有限公司，深圳518031）[摘要] 随着复杂空间钢结构的广泛应用，其结构形式也越来越复杂，基于有效计算长度系数设计方法的局限性越来越大，而直接二阶分析方法能更好的处理空间钢结构的稳定计算问题，因此直接二阶分析方法的应用也越来越广泛，欧美规范已把直接二阶设计方法作为主要设计方法。本文介绍了复杂空间结构的二阶分析方法以及通过SAP2000的二次开发，实现采用SAP2000程序对复杂空间结构进行直接二阶分析设计，并通过相应的算例说明了直接二阶分析方法的可靠性和适用性。[关键词] 空间结构;直接二阶分析方法;二次开发中图分类号：TU391 文献标识码：A 文章编号：1002-848X(2013)S1-0859-04Direct second-order analysis method for spatial structure and its achievement in SAP2000 programZhou Bin,Wang Qiwen,Yang Wanghua( Shenzhen General Institute of Architectural Design & Research Co., Ltd., Shenzhen 518031,Abstract: With the extensive application of spatial steel structure, its structure is also more and more complex and the design method based on effective length factor is limited for this structure, but direct second-order analysis method can better deal with stability problems of this structure, so the application of the direct second-order analysis method is more and more widely, direct second-order analysis and design method has been the main design method in Europe and the United States' design code. It is introduced the method of direct second-order analysis in this paper,and the secondary development of SAP2000 which we can achieve the direct second-order analysis based on SAP2000. Finally, reliability and applicability of direct second-order analysis method was demonstrated by the case study.Keywords: spatial structure;direct second-order analysis method;secondary development
