（中国建筑设计研究院有限公司， 北京100044）

［摘要］海南大厦主楼为位于高地震区的复杂超限超高层建筑，主楼高为198.6m，地下4层，地上46层，结构体系采用了钢管混凝土柱钢框架-钢筋混凝土核心筒结构体系。参考欧洲规范EC2关于混凝土弹性模量变化、徐变和收缩的时变效应的规定，采用SAP2000软件，建立了考虑施工过程模拟有限元模型，分析了外框架柱与核心筒的竖向变形及差异。同时对比一次性加载、不考虑混凝土时变效应的施工模拟、考虑混凝土时变效应的施工模拟三种分析中的变形差异，可知结构的非线性弹性变形约占总变形量的50%左右。此外分析了伸臂桁架、防屈曲支撑在考虑施工过程、混凝土时变效应下的内力情况，表明斜杆在恒加活荷载作用下由于墙柱竖向变形的差异产生了较大的内力，在设计时应当予以重视。

［关键词］海南大厦；  超限高层； 混凝土时变效应； 竖向变形差异； 斜杆内力

中图分类号： TU398 文献标识码： A文章编号：  1002-848X(2016)S1-0023-05

Vertical deformation analysis of main building of Hainan Building

Zhang Xiongdi, Zhang Fukui, Ren Qingying

（China Architecture Design Group， Beijing 100044, China）

Abstract： Main building of  Hainan Building is located in the high seismic zone. The main building is a 198.6-meter complicated super high-rise building beyond code limits with 4 levels below the ground and 46 level above the ground. The structural systems adapt the steel composite column moment frames with concrete core. Referring to the specification of the time-variant effects of the Young’s Modulus, creep and shrinkage in Eurocode EC2, the SAP2000 was applied to build the finite element model with respect to the construction process simulation and analyze the vertical deformation and the difference of the exterior moment frame columns and the wall. Compare the difference of the deformations of the three analyses, including one-time loading, reinforced concrete construction process simulation with and without considering the time-variant effects, it shows the structural nonlinear elastic deformation is around 50% of the total deformation. The analysis of internal force of the overhanging trusses and buckling-restrained braces under the construction process and time-variant effects were introduced. Furthermore, since large internal force was produced due to the different vertical deformation of the wall column under dead load, which should be pay more attention to the diagonal member design.

Keywords: Hainan Building； super high-rise beyond code limit； concrete time-variant effect； vertical deformation variance； diagonal member internal force