摘要
针对杭州铁路南站站房屋盖上跨运营线路时的拼装跨度大、结构复杂、施工"天窗"期短等特点,经综合考虑,决定采用分单元滑移拼装技术进行站房屋盖钢桁架的拼装施工。在滑移过程中,对分单元桁架进行动态监测,通过计算机同步控制及监测,对钢桁架施加顶推力,同步控制所有滑移轨道上滑靴的前进,消除了不同步性带来的屋盖桁架变形。同时通过"千斤顶+钢垫板"的组合,完成单元桁架的落位安装、固定,降低了落位过程中的不均匀变形对钢桁架的影响。经实践,施工取得了较好的社会和经济效益。
Aiming at several features of Hangzhou South Railway Station building roof over-crossing the operational railway lines, such as large assembly span, complicated structure and short construction period of skylight, after overall consideration, a decision was made to use a subdivided gliding assembly technology for construction of steel roof truss. During gliding, the subdivided truss unit was under dynamic monitoring, through computer synchronous control and monitoring, applying jacking force on steel truss to control the slipper, which eliminated the deformation of roof truss caused by asynchronism. At the same time, the unit steel truss was installed and fixed through combination Of jack and steel plate, which reduced the impact of inhomogeneous deformation on steel truss. Through practice, the construction has achieved better social and economical benefits.
出处
《建筑施工》
2017年第10期1496-1498,1511,共4页
Building Construction
关键词
大型铁路站房
钢桁架
屋盖
跨营运线路施工
拼装分单元滑移
large railway station building
steel truss
roof
over-crossing construction of operational railway line
assembly and subdivided sliding
