不间断运营的地下通道改扩建技术研究

Study on Reconstruction and Expansion Technology of Underpass under Uninterrupted Operation

摘要:

竹园污水处理厂四期工程为新建120万m3/d的污水处理设施及配套污泥设施，工程分为50万m3/d和70万m3/d两个厂区，为达到提高工程质量、缩短工期、减少环境影响等工程目标，同时突出技术创新的目的，工程中两个厂区生物反应池的缺氧区段采用了不同形式的预制装配技术。对工程中不同形式的预制装配技术进行介绍，并利用BIM技术对预制装配式结构从设计到施工进行全过程模拟，从工程的运输、吊装、受力体系以及功效等方面分析其优劣，总结预制装配式结构与现浇结构之间以及不同装配式结构之间的差异。期望通过竹园污水四期工程中装配式混凝土结构的实施，为我国污水处理厂装配式技术提供技术积累和工程经验。

Abstract:

Taking an underpass reconstruction project of the access road in Pudong Airport as an example, the stress analysis and construction sequence research of the underpass structure are carried out in order to meet the uninterrupted operation of underpass. The problem that the traditional underpass reconstruction and expansion project is required to close the underground road traffic is solved, that is, the underground traffic can still operate continuously during the whole construction period, which has the symbolic significance.