(中国建筑设计研究院 北京 100044)
【提要】西直门交通枢纽及服务用房是一个建筑造型独特，使用功能广泛，结构体系复杂的大型公共建筑。结构设计中合理地设置防震缝，将复杂多塔高层结构分成多个简单的抗侧力结构单元。主体采用框架抗震墙结构，局部过街楼采用大跨度钢结构空腹桁架体系，屋顶采用钢拱结构，以刚性杆与张拉索网组合为纵向支撑实现通透展厅要求。基础采用底部后压浆钻孔灌注桩体系。
【关键词】 多塔大底盘 框架抗震墙结构 钢结构空腹桁架体系 底部后压浆钻孔灌注桩
Structural Design of Xizhimen Exchange Hub Project(West Zone)/Peng Yonghong，Wu Ping，Meng Shangye，Zhang Shitong(China Architecture Design & Research Group，Beijing 100044，China)
Abstract:Xizhimen Exchange Hub Project is a complex largescale public engineering with multifunction.The highrise multitower structure is divided into several parts by earthquake clefts.The frame shearwall system is adopted in the main structure,and the steel large span vierendeel truss is applied in the corridor structure.The steel arch is used in the roof, and the rigidity poles and space cable pole network are composed to the vertical bracings.The postpressure grouting bored pile is used in the foundation design.
Keywords:multitower; large basement; frameshear wall system; vierendeel truss; postpour grouting bored pile