张速，温庆东
    (中国中元国际工程公司，北京100089)

[摘要] 结合新疆大厦工程的结构设计过程，分析了双塔大底盘结构在裙房屋面处的刚度突变引起楼层地震剪力的变化特点，以及不等高双塔的高度差异对水平地震力作用产生的相互影响和大跨度屋盖产生的应力集中。介绍了针对这些特点而采取的相应处理措施，为类似结构的设计实践提供参考。
[关键词] 不等高双塔；大底盘；水平地震力；大跨度屋盖；型钢混凝土柱

    Structural design of Xinjiang Mansion
    Zhang Su,  Wen Qingdong
    (China IPPR International Engineering Corporation,  Beijing 100089,  China)

Abstract: According to the designing process of Xinjiang Mansion, the characteristic of the transformation of earthquake shearing force at the part of twin towers linking the podium was analyzed. The vertical rigidity mutation of twin towers and large chassis structural system was the causation of bringing this transformation. The different altitudinal diversity between the twin vary height towers has effected the aclinic earthquake action. On the other hand, the long span rooftop has begetted the stress concentrating. Aiming at the problems hereinbefore, some relevant techno-measures have been taken, such as the shape steel RC columns & SRC structure. It can afford reference to the similar structural design.
Keywords: twin vary height towers; large chassis; aclinic earthquake action; long span rooftop; shape steel RC columns