（中国建筑西北设计研究院有限公司， 西安 710018）

［摘要］南阳市博物馆、图书馆项目为大底盘多塔连体复杂结构。博物馆、图书馆均采用带支撑的钢筋混凝土框架结构，结构底部大底盘平面超长，各单塔结构存在楼面大开洞、错层、外周设大倾角斜柱等不规则情况；博物馆与图书馆顶部设置大跨异形空间连体钢结构，采用一端刚接一端弹性连接，其受力及节点构造均较复杂。针对工程特点，重点探讨了结构布置、构造措施、性能目标、多模型包络计算及钢结构变形及应力分析等方面采取的应对措施，并对结构进行了弹性时程分析及静力弹塑性推覆（Pushover）分析等补充验算。结果表明，结构整体设计满足设定的性能目标及现行国家规范的相关要求。

［关键词］大底盘； 多塔； 连体结构； 异形空间钢桁架

中图分类号：TU318文献标识码：A文章编号：1002-848X(2019)15-0071-06

Structural design of Nanyang Museum and Library

Wang Weifeng， Wu Kun， Ma Xiaoyu

（Northwestern Architectural Design Institutes Company Ltd.， Xi′an 710018， China）

Abstract:Nanyang Museum and Library project is a multi-tower connected structure with the large chassis. The museum and the library are all reinforced concrete frame structure with braces. The length of the large chassis plane at the structure bottom is over limit, and there are irregular conditions in each single tower structure, such as floors with large opening, staggered floors and inclined columns with large dip angle on the periphery. The museum and the library are connected on their roofs by a long-span special-shaped space steel structure, which adopts rigid connection at one end and elastic connection at the other end, with complex stress and node structure. According to the characteristics of the project, the measures adopted in structural layout, construction measures, performance objectives, multi-model envelope calculation and deformation and stress analysis of the steel structure were discussed in detail, and supplementary checking calculation such as the elastic time history analysis and the static pushover analysis were also carried out. The results show that the overall design of the structure meets the requirements of the performance objectives and the relevant requirements of the current national standards.

Keywords:large chassis; multi-tower; connected structure; special-shaped space steel truss

作者简介：王伟锋，学士，高级工程师，一级注册结构工程师，Email: 2410064075@qq.com。