（上海建筑设计研究院有限公司， 上海 200040）

［摘要］Y形转换柱位于建筑主入口位置，是建筑造型上的创新尝试。Y形转换柱独特的结构形式给结构设计带来了新的挑战。设计中采用SAP2000截面设计器验算Y形柱的正截面承载能力；计算分叉位置节点域的抗剪能力；采用控制塑性铰开展顺序的思路验算Y形柱分叉位置下部柱端的塑性铰转动能力；最后，采用ABAQUS有限元软件对Y形柱进行非线性有限元分析以揭示节点区复杂受力状态下的应力分布。

［关键词］分叉柱；  Y形转换柱； ABAQUS； 有限元

中图分类号： TU318 文献标识码： A文章编号：  1002-848X(2016)S1-0228-05

Analysis and design of the Y-conversion column

Qiu Chunyi

(Shanghai Institute of Architectural Design & Research Limited Company, Shanghai 200040, China)

Abstract: The Y-conversion column locates towards the main entrance of the building, which is the innovative attempt on architectural style. The unique structure type of the Y-conversion column makes new challenges for structural design. Analyses were performed to research the normal section bearing capacity of the Y-conversion column by SAP2000. Calculations for the shear capacity of the joint zone were performed based on the design code. Researches on the rotational capacity of plastic hinge were performed too, which can help to learn the appearing orders of plastic hinge of the Y-conversion column. In the end, the nonlinear finite element analysis of the Y-column was carried out by using ABAQUS finite element software, which shows the stress distribution under the complicated loading states in the joint zone.

Keywords: bifurcated column; Y-conversion column; ABAQUS； finite element

作者简介： 邱春毅，学士，工程师，Email：08qcy@163.com。