预应力混凝土用钢绞线在大型模板中的应用

摘要

In general, large concrete pile cap template reinforcement, usually with a reinforced screw welding do nella, nut is ifxed, in order to prevent the template mold, caused by the accident. In a period of Taki output line project of Haiyang nuclear power, in line with the green, environmental protection, saving the cost management idea, uses the prestressed concrete reinforcement template strand, prestressed concrete strand can be repeatedly used, easy to extract. PVC pipe water injection process it to reduce the large volume concrete hydration heat, preventing cracks in the concrete, and achieved good results.%一般情况下，大型混凝土承台模板加固，通常用钢筋加丝杆焊接做内拉，螺母固定，以防止模板开模，造成事故。在海阳核电一期输出线路塔基工程中，本着绿色、环保、节约成本的管理理念，采用预应力混凝土用钢绞线加固模板，预应力混凝土用钢绞线能重复利用，便于抽出。PVC管注水工艺恰恰又起到降低大体积混凝土水化热的作用，防止混凝土裂缝，取得良好的效果。