(1 中国建筑西南设计研究院有限公司，成都 610081； 2 四川大学建筑与环境学院，成都 610207)

［摘要］   成都市南部副中心科技创业中心项目为大型建筑群，主要建筑为U形平面、阶梯状退台的复杂结构。对复杂结构的抗震分析、超长及大跨混凝土结构的预应力设计、中庭钢桁架屋盖和雨篷的构造措施、多土层和岩土共存锚杆的粘结强度取值等方面的设计内容进行了介绍，并提出了合理确定预应力钢筋张拉控制力的设计理念，可为同类结构的设计提供参考。
［关键词］   阶梯状U形平面；   抗震分析；   预应力结构；   钢桁架屋盖；   抗浮锚杆

Structure design on Innovation Center of Science and Technology of Southern Sub-center of Chengdu
Feng Yuan1, Wu Shu1, Chen Wenming1, Xia Xun1, Xiong Feng2,
Sun Shan1, Gou Xin1, Chen Deliang1, Peng Hua1
(1 China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610081, China;
2 College of Architecture and Environment of Sichuan University, Chengdu 610207, China)
Abstract:Innovation Center of Science and Technology of Southern Sub-center of Chengdu is a large building group, the main building comprises several complicated structures with U-shaped plane and stepped faade.  Seismic analysis of complicated structure, design of overlength and large-span prestressed concrete structure, constructional measure of steel truss roof of atrium and awning, cohesive strength value of anchor bar in multiple soil layers and in rock layers, were introduced. Design conception for rational determination of tensile control force of prestressed reinforced bar was proposed, which can provide reference for similar structures.
Keywords:U-shaped plane and stepped faade; seismic analysis; prestressed structure; steel truss roof; anti-float anchor bar
作者简介：冯远，教授级高级工程师，一级注册结构工程师，Email：xnyfy@vip.163.com。