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（1 深圳市力鵬工程結(jié)構(gòu)技術(shù)有限公司， 深圳 518034；

2 深圳市力鵬建筑結(jié)構(gòu)設(shè)計(jì)事務(wù)所， 深圳 518034）

［摘要］詳細(xì)介紹了重力二階效應(yīng)的計(jì)算方法，提出了二階效應(yīng)比的概念，結(jié)合9個(gè)實(shí)際工程案例二階效應(yīng)比的分析，指出了現(xiàn)有方法存在的問題?，F(xiàn)有程序容易實(shí)現(xiàn)P-Δ效應(yīng)的計(jì)算，建議一般的高層建筑結(jié)構(gòu)均宜考慮P-Δ效應(yīng)的影響，不規(guī)則高層建筑結(jié)構(gòu)及超高層結(jié)構(gòu)應(yīng)考慮P-Δ效應(yīng)的影響。

［關(guān)鍵詞］重力二階效應(yīng)； P-Δ貢獻(xiàn)； 二階效應(yīng)比； 剛重比

中圖分類號(hào)：TU318文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)03-0034-06

Discussion about second-order effects of gravity loading in high-rise building

Xu Xuan1, Zeng Qingli1, Wei Lian1, 2

（1 Shenzhen Li Peng Structural Engineering Technology Co., Ltd., Shenzhen 518034,  China；

2 Shenzhen Li Peng Building Structure Design Institute, Shenzhen 518034,  China）

Abstract:The method of considering second-order effects of gravity loading was described in detail, then a new coefficient named as “ratio of second-order effects(RSE)” was proposed. Based on analysis of RSE of 9 practical projects and discussion of current methods of considering second-order effects of gravity loading, several problems of current methods were pointed out. It is very easy to consider P-Δ effects by present building design programs. Thus it is suggested that P-Δ effects should better be considered in all  regular high-rise building structures, and should be considered in all  irregular and super high-rise structures.

Keywords:second-order effects of gravity loading; P-Δ contribution; ratio of second-order effect; stiffness gravity ratio

作者簡(jiǎn)介：許璇，碩士，工程師，Email:depporah@163.com。