乐  慈
(天津市建筑设计院，天津300074)

[摘要] 通过对天津数字电视大厦工程的抗震分析，总结了多筒混合结构体系的力学特点，提出了该类结构体系的概念设计原则和关键技术措施，为类似超限工程的设计提供借鉴。
[关键词] 超限高层；弹塑性分析；多简体系；复杂连体结构

    Seismic Analysis for Multi-tube Mixed Structure of Tianjin Digital Television Building
    Le Ci
    ( Tianjin Architecture Design Institute, Tianjin  300074, China)

Abstract: By means of the seismic analysis of Tianjin Digital Television building, the mechanical properties of the multi-tube steel-concrete mixed structure are summarized, and the concept design principles and the structure measures of this kind structure system are proposed.  It can be reference for the concept design of the similar out-of-code high-rise projects.
Keywords: out-of-code high-rise building;  elastic and plastic analysis;  multi-tube structure  system;  complicated connecting structure