T形沉井基础施工关键技术

Key Construction Technologies of T-type Caisson Foundation

沉井基础施工技术在道路交通、房屋建筑施工中经常被采用。但异形沉井基础并不多见,不仅开挖复杂,而且技术难度大。结合国道107线郑州段改建工程泵站施工中应用沉井基础施工技术的成功实践,介绍沉井基础的施工方法、施工工艺和所遇问题的处理方法,为类似工程施工提供有益借鉴。

Construction technologies for caisson foundation are frequently used in construction of highway and buildings.However,there are few caisson foundations similar to flat surfaces mentioned in this paper,not only comparatively sophisticated in excavation construction,but also rather difficult for some techniques.Combined with the successful practice in transformation construction of Zhengzhou section on National Road No.107 with the construction of caisson foundation,this paper makes an exploration for the construction methods and crafts,as well as the specific treatments for frequent questions,providing useful references for similar engineering construction.