- 摘 要
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（中國建筑西北設計研究院有限公司， 西安 710018）
［摘要］洛陽上陽宮觀風殿屬于塔類閣樓式建筑，建筑功能要求首層為大空間多功能廳，二層框架柱不能落地。結構設計時結合建筑造型和布置特點，采用了鋼筋混凝土桁架進行豎向構件的轉(zhuǎn)換。分析了鋼筋混凝土轉(zhuǎn)換桁架腹桿布置方式對鋼筋混凝土桁架豎向受力性能的影響，提出了弦桿和腹桿連接處節(jié)點加強構造。對結構進行罕遇地震作用下的彈塑性時程分析，以檢驗其結構布置的合理性和結構的抗震性能。計算結果表明，結構能滿足“大震不倒”的設防要求。
［關鍵詞］閣樓式建筑； 桁架轉(zhuǎn)換； 腹桿布置； 節(jié)點構造； 彈塑性時程分析
中圖分類號：TU318文獻標識碼：A文章編號：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
*中建股份科技研發(fā)課題（CSCEC-2012-Z-16）。
作者簡介：董凱利，本科，教授級高級工程師，一級注冊結構工程師，Email:444916189@qq.com。
