某新建主厂房与已经建成投产的旧有主厂房毗邻,新建主厂房有一根角柱被已经建成的两座辅助房屋夹在中间,无法设置。本文就新建主厂房缺下角柱的排架计算单元、上角柱的设置、托梁与旧有主厂房的连接和节点方案等问题进行了分析、比较,选择了一个利用旧有主厂房边柱支承新建主厂房上角柱、并能满足现行国家规范要求、构造简单、便于施工、安全合理的托梁及其支座。 A newly built main plant is adjacent to the old main plant which has been completed and put into operation. There is a corner post in the newly built main plant sandwiched between two auxiliary houses that have been completed and can not be set up. In this paper, the problems of such as the calculation unit of the corner column without posts, the setting of the upper corner column, the connection between the joist and the old main plant and the node scheme were analyzed and compared. The new main plant corner posts, and to meet the current national norms, simple structure, ease of construction, safe and reasonable joists and their bearings.