混凝土顶升法施工技术研究

Study on Construction Technology of Concrete Lift-up Method

结合抚顺皇家海洋世界跨线桥110m提篮式双曲钢管混凝土拱施工,介绍了顶升法泵送混凝土的施工和质量控制方法;并依据混凝土顶升的施工原理、顶升压力,分析了影响因素,改进了混凝土配合比;采取设置止回装置和排气溢流孔等方法,解决了钢管拱混凝土一次顶升的难题。

Combining with the construction of the Royal Fushun ocean world overpass 1 lOre double steel pipe concrete vault with basket type, the lift-up pump concrete construction and a quality control method of concrete are introduced. And according to the principles of concrete lift-up construction, lift-up pressure, some relative influence factors are analyzed and mix proportion of concrete is optimized; in addition, using the methods of setting non-return devices, exhaust overflow ori- rice, etc. can solve the once lift-up problem of steel tube arch concrete.