【摘要】 钢筋混凝土框架结构作为大型火力发电厂主厂房结构有着良好的经济性。由于生产工艺上的要求,不允许在电厂主厂房结构内设置温度伸缩缝,使得主厂房成为超长结构。解决由于结构超长而出现过大的温度(收缩)效应是一个非常重要的课题。基于火力发电厂钢筋混凝土框架结构的基本数据,建立弹塑性模型分析超长结构的温度效应;并建立温度(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。更多还原

【Abstract】 RC frame structure is much more economic than other type of structures for power plant’s main powerhouse.Expansion joints are not allowed due to the requirement of production process,thus the main powerhouse is actually an extra-long structure.The key for the extra-long structure is to reduce the over-large temperature effect (shrinkage).Based on the basic data of an under-construction power plant,an elastoplastic model was established for analysis of the temperature effect of the extra-long RC frame structure,and an analytical model of joint width under temperature (shrinkage) effect was set up to investigate the validity of inner expansion joints in reducing the temperature effect (shrinkage).更多还原