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（東華工程科技股份有限公司， 合肥 230024）

［摘要］對(duì)某行政辦公樓進(jìn)行新增外掛電梯的改造設(shè)計(jì)，對(duì)比分析了多種改造的結(jié)構(gòu)方案。針對(duì)最終方案確定相關(guān)關(guān)鍵參數(shù)，采用振型分解反應(yīng)譜法分析了新增結(jié)構(gòu)對(duì)原結(jié)構(gòu)在小震作用下結(jié)構(gòu)整體指標(biāo)的影響程度，通過(guò)靜力彈塑性分析給出了結(jié)構(gòu)能力譜與需求譜的關(guān)系，判斷結(jié)構(gòu)在大震作用下的性能狀態(tài)。分析結(jié)果表明：當(dāng)新增結(jié)構(gòu)抗側(cè)剛度較大時(shí)，不同材料阻尼比的確定是關(guān)鍵； 新增電梯對(duì)整體結(jié)構(gòu)在小震和大震作用下的承載能力和變形能力的影響并不明顯，但需對(duì)局部構(gòu)件進(jìn)行加固。

［關(guān)鍵詞］辦公樓； 外掛電梯； 改造設(shè)計(jì)； 彈塑性分析； 加固設(shè)計(jì)

中圖分類號(hào)：TU398+.2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)06-0068-05

Reconstruction design of a newly added external elevator in an administrative office building

Chi Xiang

(East China Engineering Science and Technology Co., Ltd., Hefei 230024, China)

Abstract:The reconstruction design of a newly added external elevator in an administrative office building was carried out, and a variety of reconstruction structural schemes were compared and analyzed. The relevant key parameters were determined in view of the final scheme, and the mode decomposition response spectrum method was used to analyze the impact of the new structure on the overall index of the original structure under the action of frequent earthquakes. The relationship between the structural capacity spectrum and the demand spectrum was given through the static elastoplastic analysis to judge the performance state of the structure under the action of rare earthquakes. The results show that when the lateral stiffness of the new structure is large, the determination of the damping ratio of different materials is the key; the influence of the newly added elevator on the bearing capacity and deformation capacity of the whole structure under frequent and rare earthquakes is not obvious, but the local components need to be reinforced.

Keywords:office building; external elevator; reconstruction design; elastoplastic analysis; reinforcement design

作者簡(jiǎn)介：池祥，碩士，工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：chixiang@chinaecec.com。