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在软土地区铺设大管径排水管道,当管道埋深较大时,顶管施工与开槽施工相比,在技术和经济上具有很大优势。结合宁波南环快速路项目污水管道工程,介绍了顶管工程设计中所涉及到的顶管井形式及尺寸、顶距的确定、顶力的计算、顶管管材的选择、顶管坑的维护形式等内容,并总结了顶管工程设计中的一些经验,以供参考。
In the soft soil area laying large diameter drainage pipe, when the pipeline depth is larger, compared with the construction of pipe jacking, in terms of technology and economy has great advantages. Combined with the sewage pipe project of Ningbo Nanhuan Expressway project, this paper introduced the form and dimension of jacking pipe, the determination of jacking pit, the calculation of jacking force, the selection of jacking pipe and the maintenance form of jacking pit etc. Content, and summed up some experience in the design of pipe jacking for reference.