（中国建筑西北设计研究院有限公司， 西安 710018）

［摘要］洛阳上阳宫观风殿属于塔类阁楼式建筑，建筑功能要求首层为大空间多功能厅，二层框架柱不能落地。结构设计时结合建筑造型和布置特点，采用了钢筋混凝土桁架进行竖向构件的转换。分析了钢筋混凝土转换桁架腹杆布置方式对钢筋混凝土桁架竖向受力性能的影响，提出了弦杆和腹杆连接处节点加强构造。对结构进行罕遇地震作用下的弹塑性时程分析，以检验其结构布置的合理性和结构的抗震性能。计算结果表明，结构能满足“大震不倒”的设防要求。

［关键词］阁楼式建筑； 桁架转换； 腹杆布置； 节点构造； 弹塑性时程分析

中图分类号：TU318文献标识码：A文章编号：1002-848X(2017)22-0038-05

Conversion truss design of Guanfeng Pavilion in Shangyang Palace in Luoyang

 Dong Kaili, Liu Feng, Wu Xiangyan, Jia Junming, Wu Kun, Che Shunli

(China Northwest Architecture Design and Research Institute Co., Ltd., Xi′an 710018， China)

Abstract:Guanfeng Pavilion in Shangyang Palace in Luoyang belongs to attic-style pagoda. The architecture has functional requirement of a large space multi-function hall without structural columns in the first floor, so columns of the second floor must be canceled off in the first floor. Based on building shape and architectural layout in structural design, reinforced concrete conversion truss was adopted to conduct conversion of vertical components. The influence of the  web member layout of the reinforced concrete conversion truss on the vertical mechanical behavior of the reinforced concrete truss was analyzed. The strengthening construction of joints between chord and web members was presented. The elasto-plastic time-history analysis of the structure subjected to the rare earthquake was carried out to verify the rationality of the structural arrangement and the seismic performance of the structure. The calculation results show that the structure can meet the fortification requirements of “not collapsing under rare earthquake”.

Keywords:attic-style pagoda; truss conversion; web member layout; joint construction; elasto-plastic time-history analysis

*中建股份科技研发课题（CSCEC-2012-Z-16）。

作者简介：董凯利，本科，教授级高级工程师，一级注册结构工程师，Email:444916189@qq.com。