摘要
在建的百万千瓦机组大型火力发电厂主厂房由于工艺上原因,通常无法设置伸缩缝而形成超长结构。采用钢筋混凝土框架的超长结构具有良好的技术经济指标,但解决由于超长带来的过大的温度(收缩)效应是一个非常重要的课题。本文基于某火力发电厂钢筋混凝土框架结构的基本数据,建立了超长框架结构在温度(收缩)作用下的裂缝宽度分析模型,研究了内置伸缩缝对降低超长框架温度(收缩)效应的影响及其有效性。
The length of 1000MW power plant main building is usually 100m or longer,and the expansion joint is not allowed due to the production process,so that the building becomes an over-long structure.Although the RC over-long structure is much more economical than other types of structure planning,it is important to reduce the effect of the temperature change and shrinkage.In order to investigate the validity on the effect of the temperature and shrinkage for an overlong structure by setting inner expansion joint,the non-linear analysis of the over-long RC frame structure under the temperature and shrinkage were conducted based on an under-construction power plant.
出处
《低温建筑技术》
2010年第6期4-6,共3页
Low Temperature Architecture Technology
基金
浙江大学-浙江省电力设计院科技合作项目
国家支撑计划项目(2006BAJ03A04-03)
关键词
超长框架结构
温度作用
弹塑性
裂缝宽度
over-long frame structure
temperature effect：shrinkage
crack width
