航天城中小学项目地上部分包括小学楼、中学楼、综合楼、宿舍楼四个单体;地下部分整个连为一体,主要为大空间冰球馆、体育馆、报告厅、游泳馆、设备用房及地下车库等。本工程地下部分:大空间冰球馆、体育馆采用钢桁架形式,游泳馆采用型钢混凝土梁形式,报告厅为27m跨型钢混凝土转换结构。地上部分主体结构采用钢筋混凝土框架-剪力墙体系。主要阐述本项目结构设计的关键及难点问题,包括重荷载下钢桁架设计及节点连接设计、27m跨型钢混凝土转换梁设计、地下大空间及下沉庭院开洞等导致的挡土墙复杂传力的结构设计、小学楼屋顶长悬挑型钢梁吊挂下部2层坡道结构设计、综合楼弹塑性分析等。 Aerospace City primary and secondary school projects on the ground, including primary school building, middle school building, comprehensive building, dormitory four single; underground part of the whole even as one, mainly for the large space ice hockey hall, gymnasium, lecture hall, swimming pool, equipment room and Underground garage and so on. The underground part of the project: large space ice hockey hall, gymnasium in the form of steel trusses, swimming pool with the form of steel beam, the hall for the 27m span steel concrete conversion structure. The main part of the ground structure using reinforced concrete frame - shear wall system. The key and difficult problems in the structural design of the project are described in detail, including the design of steel truss and joint connection design under heavy load, the design of 27m span steel-concrete transition beam, the large underground space and the opening of the sunken courtyard, The structural design, the roof of the primary school building cantilevered beam hanging two lower ramp structure design, comprehensive building elastoplastic analysis.