（广东省建筑设计研究院， 广州 510010）

［摘要］广东国际大厦由裙房与主塔楼组成，为满足功能要求对其进行改造。对大跨种植屋面采用预应力钢结构体系，并首次提出先铰接后刚接的设计思路。介绍阻尼器的设计方法，并解决宴会厅框架柱二阶效应的力学问题。针对边梁受扭问题，也给出了新的设计思路。阻尼器的使用，缩短了工期也节约了造价；同时通过充分的计算分析，能够确保结构安全。

［关键词］加固改造； 二阶效应； 先铰接后刚接； 预应力钢结构

中图分类号：TU318+.1文献标识码：A文章编号：1002-848X(2016)21-0101-04

Key technology in the skirt building reconstruction of Guangdong International Hotel

Huang Huihui

(Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010， China)

Abstract:Guangdong International Hotel was composed of skirt building and towers, and was reconstructed in order to meet the function requirements. The pre-stressed steel structure was adopted in large-span planting roof and a new design idea of using hinged connection before rigid connection was first proposed. A design method of damper was introduced and the mechanical problem in the second-order effect of frame column of the banquet hall was worked out. A new design idea was put forward for the problem of spandrel beam subjected to torsion. Adoption of damper reduced construction period and saved cost, and sufficient calculation and analysis could ensure the safety of the structure.

Keywords:reinforcement and reconstruction; second-order effect; hinged connection before rigid connection; pre-stressed steel structure

作者简介：黄辉辉，高级工程师，Email：475910361@qq.com。