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(1 河北工業(yè)大學(xué)土木與交通學(xué)院， 天津 300401；2 廊坊師范學(xué)院建筑工程學(xué)院， 廊坊 065000)

［摘要］高層鋼框架結(jié)構(gòu)在水平荷載作用下，層間位移包含有害位移和無(wú)害位移兩部分。在結(jié)構(gòu)側(cè)移的傳統(tǒng)計(jì)算中，通常忽略P-Δ效應(yīng)的影響；在二階側(cè)移計(jì)算中，也未從有害位移的角度進(jìn)一步分析，這對(duì)較柔的高層鋼框架結(jié)構(gòu)來(lái)說(shuō)會(huì)造成較大的誤差。因此，針對(duì)這一問(wèn)題，提出了高層鋼框架結(jié)構(gòu)考慮P-Δ效應(yīng)影響的彈性層間有害位移的簡(jiǎn)化計(jì)算方法。通過(guò)采用簡(jiǎn)化方法和對(duì)角撐法對(duì)一個(gè)承受水平均布荷載的15層純鋼框架結(jié)構(gòu)進(jìn)行模擬計(jì)算對(duì)比，并討論了P-Δ效應(yīng)對(duì)層間有害位移的影響。結(jié)果表明提出的簡(jiǎn)化方法實(shí)用可行，能夠很好地滿足工程的實(shí)際需求。 

［關(guān)鍵詞］高層鋼框架結(jié)構(gòu)；P-Δ效應(yīng)；彈性層間有害位移；簡(jiǎn)化計(jì)算 

中圖分類號(hào)：TU973+.2 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)16-0064-05

Simplified calculation of elastic harmful inter-story drift of high-rise steel frame structure considering P-Δ effect 

PI  Fengmei1,2,  REN  Wenjie1,  CHEN  Bowen1,  ZHAO  Yue1 

(1 School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401， China；2 Institute of Architecture Civil Engineering, Langfang Normal University, Langfang 065000， China) 

Abstract:The inter-story drift of high-rise steel frame structure is composed of harmful drift and harmless drift under horizontal load. The influence of P-Δ effect is usually ignored in the traditional calculation of structural lateral displacement, and the harmful drift is not further analyzed in the calculation of second-order lateral displacement. It will produce larger error for the flexible high-rise steel frame structure. Therefore, in order to solve this problem, a simplified method of the elastic inter-story harmful drift of high-rise steel frame structure considering P-Δ effect was proposed. The results using the simplified method and the diagonal bracing method of a 15-story steel frame structure under horizontal uniform load were compared. And the influence of P-Δ effect on harmful drift was discussed. The results show that the simplified method is practical and feasible, and can well meet the actual needs of the project. 

Keywords:high-rise steel frame structure； P-Δ effect； elastic harmful inter-story drift； simplified calculation

*國(guó)家自然科學(xué)基金面上項(xiàng)目（51878240）。

 作者簡(jiǎn)介：皮鳳梅，博士研究生，講師，Email:  pyhwyb@126.com； 通信作者：任文杰，博士，教授，博士生導(dǎo)師，Email: rwjwlq@126.com。