摘要
在预制箱梁的混凝土浇筑过程中,芯模的上浮问题一直是困扰施工生产的技术难题。结合实际工程现场进行了大量的试验,分析了泵送混凝土浇筑箱梁上浮力的影响因素,介绍了一种测试混凝土上浮力的简单试验方法,通过试验结果的分析,讨论了混凝土浇筑箱梁时浇筑高度及有无振捣对芯模上浮力的影响,得到了施工时有效控制芯模上浮的措施。
The core form unstable was a problem during prefabricate the box girder. This paper analyses the factors which effect the buoyant force of pumpable concrete on formwork. A simple method of testing concrete pouring buoyant force and experimental reuhs are presented. Influence of the height of pouring and vibration of concrete on the form pressure is discussed and the measure to control the core form unstable is found.
出处
《中南公路工程》
2007年第1期115-118,共4页
Central South Highway Engineering
基金
重庆科委资助项目(200311079)
关键词
泵送混凝土
箱梁
芯模
上浮力
pumpable concrete
box girder
core formwork
buoyant force
