地下管线采用钢筋混凝土围护结构加固的施工要点

Key Points of Strengthening Underground Pipeline with Reinforced Concrete Envelope Structure

针对施工现场临时道路下面原有地下管线进行保护和加固的施工要点进行分析总结,尤其对土质较差、地下管线较多、管线之间距离较近、路面承载较重、管线上表面距离路面土层较浅的情况下使用钢筋混凝土围护结构施工时的技术要点进行详细阐述。分析了该项技术的特点,总结了地下管线采用钢筋混凝土维护结构加固应考虑的荷载、效应等条件,提出了各控制要点与关键节点的保证措施。

This paper analyses and summarizes the main points of protection and reinforcement of existing underground pipelines under temporary roads in construction site,expounds in detail the technical points of using reinforced concrete enclosure structure in construction especially when the soil quality is poor,there are many underground pipelines,the distance between pipelines is close,the bearing capacity of pavement is heavy and the surface of pipelines is shallow,analyses the characteristics of this technology,summarizes the load and effect that should be taken into account in the reinforcement of underground pipelines using reinforced concrete maintenance structure,and puts forward the control points and the guarantee measures of key nodes.