摘要
装配式建筑所受的期望越来越高,装配式轨道交通车站和综合管廊已经取得较大发展,但装配式市政隧道的设计及施工发展却严重滞后,主要原因是装配式隧道预制件吊装重量大、远程运输净高受限、非标构件多、模板成本高等。因此,如何实现结构的轻量化、标准化犹为突出及紧迫。现以开创大道与萝岗新城外环路交叉口立交工程为例,分析了装配式隧道结构形式的选择、结构的模板分解方式、地下结构预应力的设计及应用及隧道平纵曲线段的调节方式和预制模板的统一,并应用了新材料、新产品和新工艺。案例工程采用肋板式结构及湿拼法的拼接方式使得预制构件尽可能轻量化、标准化,成功实现隧道全预制拼装市政隧道与现浇隧道工程造价相当,为装配式市政隧道设计提供一定的参考价值。
The expectations of prefabricated buildings are getting higher and higher.The prefabricated rail transit stations and utility tunnels have made great progress.But the design and construction of prefabricated municipal tunnels are seriously lagging behind.The main reasons are the heavy lifting weight of tunnel prefabricated parts,limited clear height of long-distance transportation,many non-standard components and high formwork costs.Therefore,how to realize the lightweight and standardization of the structure is still outstanding and urgent.Taking the interchange project at the intersection of Kaichuang Avenue and Luogang New Town Outer Ring Road as an example,the selection of the structural form of the prefabricated tunnel,the template decomposition method of the structure,the design and application of the prestress of the underground structure,the adjustment method of the horizontal and vertical curve section of the tunnel and the unity of the prefabricated template are analyzed.And the new materials,new products and new processes are applied.The splicing method of ribbed plate structure and wet splicing method is used for the project to make the prefabricated components as lightweight and standardized as possible,and successfully realizes that the cost of the fully prefabricated municipal tunnel is equivalent to that of the cast-in-place tunnel,which provides a certain reference value for the design of the prefabricated municipal tunnel.
作者
詹素虹
郭太军
刘国强
ZHAN Suhong;GUO Taijun;LIU Guoqiang
出处
《城市道桥与防洪》
2024年第5期273-278,M0023,M0024,共8页
Urban Roads Bridges & Flood Control
关键词
装配式建筑
装配式市政隧道
预制装配
地下结构预应力
轻量化
标准化
隧道防水
prefabricated building
prefabricated municipal tunnel
prefabricate
prestress of underground structure
lightweight
standardization
tunnel waterproofing