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重庆发电厂扩建工程江边栈桥一号桥墩为圆形实心的~#150混凝土构筑物,桥墩下口直径5.62米,上口直径4米(墩顶上有一墩帽,直径5米)墩身高22米。我们采用了先在墩中心浇一临时柱,在柱顶上用钢管与周围的定型组合钢模连结固定,在模板周围用钢丝绳箍的办法,解决了由于新浇混凝土偏心侧压力造成模板偏斜的问题。此法简单易行,保证工程质量,收到了较好的效果。一、临时柱的作用有时在施工大体积混凝土独立墩时,虽然根据规范要求考虑了混凝土侧压力对模板的作用,但是仍然造成模板偏斜,影响工程质量。究其原因是:施工直径3米以上的墩子,由于工作面大,铺一层混凝土需一个小
Chongqing Power Plant Expansion Project Riverside Trestle Pier No.1 Pier is a round concrete ~#150 concrete structure with a diameter of 5.62 meters and an upper diameter of 4 meters (a pier with a pier on the top of a pier, diameter of 5 meters) and a pier height of 22 meters. . We used a temporary column in the center of the pier first, and fixed it on the top of the column with a steel pipe and the surrounding stereotyped combination steel mold. The method of using a steel wire hoop around the template solved the template deflection caused by the eccentric side pressure of the newly poured concrete. The problem. This method is simple and easy to implement, guarantees project quality and has received good results. First, the role of the temporary column Sometimes in the construction of mass concrete concrete pier, although according to the specification requirements taking into account the role of concrete side pressure on the template, but still cause the template deflection, affecting the project quality. The reason is: the construction of blocks with a diameter of more than 3 meters, due to the large working surface, a layer of concrete needs a small