全装配式预制拼装技术在软土地区城市明挖地下道路隧道中的应用研究

Study on Application of Full Assembly Prefabrication Technology in Excavation of Urban Underground Road Tunnel in Soft Soil Region

地下工程工业化建造是地下工程的发展方向,目前传统明挖法地下道路隧道工业化率较低,钢筋绑扎、混凝土浇筑等作业均需在现场完成。采用全装配式预制拼装技术可以大幅减少现场作业量,提高人口利用效率,同时提高隧道本身的结构质量。但受制于明挖隧道的特点,在软土地区城市核心地区修建明挖地下道路隧道依然存在着部分技术难点,目前尚未有成功案例。以《复杂环境下明挖隧道工程绿色工业化智能建造关键技术研究》科研课题为背景,结合上海某工程,提出软土地区全装配式预制拼装技术的解决方案,对未来全装配式预制拼装技术的推广提供借鉴。

The underground engineering industrialization construction is the development orientation of underground engineering. At present, the industrialization rate of underground road tunnel by the traditional excavation method is lower. The works of steel bar binding, concrete pouring and so on are all required to complete on site. The application of full assembly prefabrication technology can remarkably reduce the amount of field work, improve the efficiency of manual utilization, and at the same time improve the structure quality of tunnel. But limited by the characteristics of excavated tunnel, there are still some technical difficulties in the excavation of underground road tunnel in the urban core area of the soft soil region. There is no successful case now. Taking the scientific research task of Study on Key Green Industrialized Intelligent Construction Technology of Tunnel Excavation Engineering in Complex Environment as the background, and combined with a project in Shanghai, the article puts forward the solving scheme of full assembly prefabrication technology in soft soil region, which can be referred for the promotion of the full assembly prefabrication technology in future.