摘要
通过对温度作用和混凝土收缩作用进行定性分析,并借助通用有限元程序对其进行定量分析,提出了对于超长结构不设缝的分析方法。最后结合工程实例,分析了预应力对于提高混凝土抗裂,减少结构中伸缩缝的作用。工程实践表明取得了较好的效果。
Because of temperature change and shrinkage of concrete, temperature joints have to be set for the ultra - long concrete structures. It destroys the integration of the buildings. By both qualitative and quantitative analysis with FEM, the technique of ultra - long concrete structure without joints was researched and the effect of prestress were also analyzed. At last, the practice was introduced, which showed good effect.
出处
《低温建筑技术》
2007年第5期59-61,共3页
Low Temperature Architecture Technology
关键词
超长结构
温度应力
收缩应力
预应力技术
uhtra-long structure
temperature stress
shrinkage stress
pre-stressing technique
