永临结合装配式地铁车站构件型式与拼装模式比选

李育慧1麦家儿1孙菁1王利军2何冠鸿1

Comparative Selection of Component Types and Assembly Modes for PermanentTemporary Integration Prefabricated Metro Stations

LI YuhuiMAI JiaerSUN JingWANG LijunHE Guanhong
摘要:
装配式车站已在我国多个城市的地铁车站中有所应用,针对装配式地铁车站永临结合方案研究不足的问题,需对装配式地铁车站永临结合方案的结构型式、拼装模式进行分析。方法:介绍了永临结合装配式车站方案;介绍了构件连接型式及其拼装模式;对不同梁型(预制普通混凝土梁、预制型钢混凝土梁、钢混组合梁和预应力箱梁)的预制横纵梁构件在装配式地铁车站中的应用进行了适用性分析和经济性比选。结果及结论:永临结合方案能节省工程工期和造价;顶板、中板与侧墙采用铰接连接能提升施工速度和精确度;顶板和楼板的预制板可根据受力和开孔情况而采用不同的拼装模式;当横向跨度较小时,预制普通混凝土梁具有适应性广、施工方便的优势;随着横向跨度的增大,采用预应力箱梁能有效控制构件的造价、自重和尺寸。
Abstracts:
Prefabricated stations are widely used in metro systems across various cities in China. However, the research on PTI (permanenttemporary integration) scheme for prefabricated metro stations is insufficient. Therefore, it is necessary to analyze the structural types and assembly modes in PTI scheme for prefabricated metro stations.Method: The scheme of PTI in prefabricated station is introduced, and types of component connections and assembly modes are discussed. An applicability analysis and economic comparison of prefabricated transverse and longitudinal beam components with different beam types (precast ordinary concrete beams, precast steelreinforced concrete beams, steelconcrete composite beams, and prestressed box beams) in prefabricated metro stations is carried out.Result & Conclusion: The PTI scheme can save construction time and costs. The use of hinged connections between the floor slab, middle slab and sidewalls can improve construction speed and accuracy. The prefabricated panels for roof slab and floor slab can be assembled in different modes based on stress conditions and openings. For smaller transverse spans, precast ordinary concrete beams offer advantages of wide adaptability and convenient construction. As the transverse span increases, the use of prestressed box beams can effectively control component costs, selfweight and dimensions.
论文检索