摘要
西安高新青少年活动中心项目由A座塔楼、B座塔楼及裙房组成。A座建筑高度140m,构架高度152.8m;B座建筑高度99.75m,与裙楼一体形成非对称不等高的大底盘双塔结构。两座塔楼均采用钢筋混凝土框架-核心筒结构体系。本文针对分塔模型、双塔模型的计算结果进行综合对比,对高烈度区地震作用下的大底盘各层楼板应力进行有限元分析,并进行了大震静力推覆计算,且采取相对应的抗震加强措施,以保证本工程满足“三阶段,两水准”的抗震设计要求。本工程竖向构件底部轴力差异较大,桩基设计时采用变刚度调平的原则,以期控制差异沉降在合理范围,长期观测所得沉降数据较为理想。
Xi’an Gaoxin Youth Activity Center project is composed of tower A, tower B and podium. Tower A is 140m high and the frame height is 152.8m;tower B is 99.75m high;tower A and tower B forms an asymmetric unequal heights large chassis two-tower structure with the podium building. Both towers use the reinforced concrete frame-core tube structural system. In this paper, a comprehensive comparison is made between the calculation results of the separate tower model and the two-tower model, and carried out The finite element analysis of the stress of each floor of the large chassis under the earthquake action, and the static force nappe calculation of great earthquake is also carried out respectively of towers, and take corresponding seismic strengthening measures to ensure that the project to meet the "Three stages, Two levels" seismic design requirements. The axial force at the bottom of the vertical members of the project varies greatly, and the principle of variable stiffness leveling is adopted in the design of pile foundation in order to control the differential settlement in a reasonable range. The settlement data obtained from long-term actual monitoring are ideal.
作者
潘映兵
桂鹤阳
王波
郑春艳
王世斌
PAN Yingbing;GUI Heyang;WANG Bo;ZHENG Chunyan;WANG Shibin(China Northwest Architecture Design and Research Institute Co.,Ltd.,Xi'an 710018,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S02期151-159,共9页
Building Structure
基金
中国建筑西北设计研究院有限公司外部科研课题(WB-2020-JG-06)
关键词
大底盘
超限
多塔
弹塑性
桩基
高烈度
large chassis
ultralimit
multi-tower
elastic-plastic
pile foundation
high intensity
