海南大厦主楼结构竖向变形分析

发布时间：2018-07-02 21:26

本文选题：海南大厦 + 超限高层　；参考：《建筑结构》2016年S1期

【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。
[Abstract]:The main building of Hainan Tower is a complex super high rise building in the highland seismic area. The main building is 198.6m, 4 floors underground and 46 floors on the ground. The structure system adopts a steel frame steel frame - reinforced concrete core tube structure system. Reference is made to the regulation of the time variation effect of the elastic modulus of concrete, creep and shrinkage of concrete by the European standard EC2. In SAP2000 software, the finite element model considering the construction process is established, and the vertical deformation and difference between the frame column and the core tube are analyzed. At the same time, the construction simulation of the time-varying effect of concrete is not taken into consideration, and the deformation difference in the three analysis of the time-varying effect of concrete is considered, and the nonlinear elasticity of the structure is known. The deformation accounts for about 50% of the total deformation. In addition, the internal force conditions of the flexion braces under the consideration of the construction process and the time-varying effect of concrete are analyzed. It is shown that the inclined rod produces greater internal force due to the difference of vertical deformation of the wall column under the action of constant loading, and the timing should be paid attention to.
【作者单位】：中国建筑设计研究院有限公司;
【分类号】：TU973.2

【相似文献】