北京奥体南区3#地块项目结构设计

发布时间：2019-02-27 17:17

【摘要】：北京奥体南区3#地块项目结构总高度172.5m,为超B级高度的超限高层结构,主塔楼采用钢筋混凝土内筒-型钢混凝土外框柱-钢梁组成的混合结构体系。采用SATWE与ETABS两种软件进行整体分析计算,两者计算结果基本一致,结构的周期比、层间位移角、层间受剪承载力比等均满足规范要求;钢筋混凝土核心筒底部加强区的墙肢及型钢混凝土外框柱的偏压、偏拉承载力满足中震不屈服,受剪承载力满足中震弹性;大震下复核受剪截面控制条件。顶部34层设置高位转换层,在水平和竖向地震作用下,转换梁的承载力满足大震不屈服,相关支承构件承载力满足中震弹性要求及强剪弱弯要求。采用PERFORM-3D软件进行动力弹塑性时程分析,结果表明,结构在大震下的性能表现较为合理,结构没有受到严重破坏或倒塌。
[Abstract]:The total height of the 3 # block project in Beijing Olympic body area is 172.5m, which is a super-B high-rise structure. The main tower is composed of reinforced concrete inner tube, steel reinforced concrete outer frame column and steel beam, which is composed of reinforced concrete inner tube, section steel concrete outer frame column and steel beam. Two kinds of software, SATWE and ETABS, are used for overall analysis and calculation, and the results are basically consistent. The periodic ratio of the structure, the displacement angle between layers and the shear bearing capacity ratio between floors meet the requirements of the code. The eccentricity of the wall limbs and steel reinforced concrete outer frame columns in the reinforced concrete core tube bottom is not yielding to the mid-earthquake, and the shear capacity satisfies the medium-earthquake elasticity, and the control condition of the shear section is checked under the large earthquake. Under the action of horizontal and vertical earthquakes, the bearing capacity of the transfer beam meets the requirements of large earthquake, and the bearing capacity of the supporting member meets the requirements of mid-earthquake elasticity and strong shear and weak bending under the action of horizontal and vertical earthquakes. The dynamic elastoplastic time history analysis is carried out with PERFORM-3D software. The results show that the performance of the structure under large earthquake is reasonable and the structure is not seriously damaged or collapsed.
【作者单位】：中国中建设计集团有限公司(直营总部);
【分类号】：TU973.3

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