摘要
仁恒世纪大厦为框架-双筒体结构,建筑高度198m,结构平面呈哑铃状,属于具有扭转不规则、楼板不连续、局部不规则(局部穿层柱、个别构件错层)、斜柱托换等一般不规则项的超限高层建筑。介绍了工程结构特点和整体抗震性能化设计过程。论述了嵌固端选择、多角度地震输入、跨层斜板及穿层斜柱受力分析等设计重难点。结果表明:本工程采用的框架-双筒体结构具有良好的抗震性能;设计时将绝对嵌固端和名义嵌固端均设置在基础顶是合适的;塔楼双筒体布置并未导致明显的强弱轴,多角度地震输入的结构响应接近;裙楼跨层斜板对结构整体受力影响较小;穿层斜柱不会发生屈曲稳定破坏,通过构造加强后斜柱拉梁的设计安全可靠。
Renheng Century Mansion is a frame-double tubes structure with building height of 198m,the structural plane is dumbbell-shaped,it belongs to an out-of-code high-rise building with general irregular items such as torsion irregularity,floor discontinuity,local irregularity(partial cross-story column,individual component split-floor)and inclined column transfer,etc.The characteristics of the engineering structure and the overall seismic performance-based design process were introduced.The design difficulties such as the selection of the embedded end,the multi-angle seismic input,the cross-story inclined plate and the force analysis of the cross-story inclined column were discussed.The results show that the frame-double tubes structure adopted in this project has good seismic performance;it is appropriate to set the absolute fixed end and the nominal fixed end on the top of the foundation in the design;the double tubes arrangement of the tower does not lead to obvious strong and weak axes,and the structural response of multi-angle seismic input is close;the cross-story inclined plate of the podium has little influence on the overall force of the structure;the buckling stability failure of the inclined column will not occur,and the design of the inclined column tension beam after structural strengthening is safe and reliable.
作者
高义奇
林超伟
王兴法
洪伯聪
邱裕绵
GAO Yiqi;LIN Chaowei;WANG Xingfa;HONG Bocong;QIU Yumian(PTI Engineering Design Consultancy Shenzhen Co.,Ltd.,Shenzhen 518031,China;Shenzhen PT Lansn International Architecture Design Co.,Ltd.,Shenzhen 518053,China)
出处
《建筑结构》
北大核心
2024年第4期86-91,共6页
Building Structure
关键词
仁恒世纪大厦
超高层建筑
双筒体
多角度地震输入
跨层斜板
穿层柱
斜柱
Renheng Century Mansion
super-high-rise building
double tubes
multi-angle seismic input
inclined cross-story floor
cross-story column
inclined column
