南水北调长沟泵站大体积混凝士质量控制措施

Quality Control Measures for Mass Concrete Pouring of Changgou Pumping Station in South-to-North Water Diversion Project

摘要:

长沟泵站作为南水北调东线关键节点，其大体积混凝土及异型结构混凝土施工意义重大。文章详述该泵站施工实践，前期根据结构特性与高程，精心规划平面分块、立面分层;施工时，严控底板、流道层模板与混凝土浇筑等工艺，针对不同季节，高温季采取降低水化热、结构防裂等措施，低温季从原材料、工艺等方面着手，效果显著，形成完整质量控制体系，可为类似工程提供参考。

Abstract:

As a key node of the eastern route of the South-to-North Water Diversion Project, the construction of mass concrete and special-shaped structure concrete for Changgou Pumping Station is of great significance. This paper introduces the construction practice of the pumping station in details. In the early stage, according to the structural characteristics and elevation, careful planning of plane block division and vertical layer division was carried out. During construction, strict control the processes such as formwork and concrete pouring of the bottom slab and flow channel layer, measures such as reducing hydration heat and preventing structural cracking were adopted in high-temperature seasons, and measures were taken from raw materials and processes in low-temperature seasons, achieving remarkable results. A complete quality control system has been formed, which can provide key technical references for similar projects.