（1 深圳市力鹏工程结构技术有限公司， 深圳 518034；

2 深圳市力鹏建筑结构设计事务所， 深圳 518034）

［摘要］详细介绍了重力二阶效应的计算方法，提出了二阶效应比的概念，结合9个实际工程案例二阶效应比的分析，指出了现有方法存在的问题。现有程序容易实现P-Δ效应的计算，建议一般的高层建筑结构均宜考虑P-Δ效应的影响，不规则高层建筑结构及超高层结构应考虑P-Δ效应的影响。

［关键词］重力二阶效应； P-Δ贡献； 二阶效应比； 刚重比

中图分类号：TU318文献标识码：A文章编号：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

作者简介：许璇，硕士，工程师，Email:depporah@163.com。