（中冶集团建筑研究总院 北京  100088）
【提要】 通过预应力索拱体系在包头一机展览馆中的应用，对索中预应力值的确定、索张拉方式的选择以及索节点的处理作了一定的探讨；同时比较了预应力索拱体系和拱柱体系的特点。分析结果表明，索拱体系的采用使得工程的用钢量大大减少。由于工程设计与施工紧密结合，使设计合理，施工也大大简化。
【关键词】 展览馆 预应力 索 拱 节点
Application of Prestressed Cable and Arch  System at Baotou Yiji Exhibition/Zhu Yifeng,Li Ce
(Central Research Institute of Building and Construction of MCC Group，Beijing 100088 China)
Abstract:Through the application of prestressed cable and arch system at Baotou Yiji exhibition,some explorations have been made on deciding the value of prestress in the cable,selecting method of drawing cable and dealing with the junction of cable.The characteristics of the prestressed cable and arch system and the archcolumn system have been compared. The analysis results show that the steel usage of the engineering reduces largely because of the application of the cable and arch combination structure system.
Keywords:exhibition hall; prestress； cable; arch; junction; roof