超大型双曲线混凝土冷却塔振动台试验研究
Shaking Table Model Test of a Super Large Hyperbolic Concrete Cooling Tower
陈良 1张明玉 2陈家丰 3郝玮 3李淼2
作者信息
- 1. 中国电力工程顾问集团 华北电力设计院有限公司,北京 100120
- 2. 中国神华胜利发电厂,内蒙古 锡林浩特 026000
- 3. 中建研科技股份有限公司,北京 100013
- 折叠
摘要
神华胜利发电厂混凝土冷却塔位于7度抗震设防区,塔高225 m,塔筒为双曲线型.这种超大型冷却塔在地震等极端荷载下一旦发生破坏,后果将是灾难性的.目前对冷却塔的研究多以数值模拟为主,试验研究较少.通过设计开展缩尺比为1∶33的地震振动台模型试验,研究冷却塔的结构动力响应特性,分析不同地震烈度下结构的刚度退化和损伤情况,寻找结构的薄弱部位,并综合动力试验和数值模拟结果,评价结构的可靠性,提出合理的抗震措施和结构建议.
Abstract
The concrete cooling tower of Shenhua Shengli Power Plant is located in the 7 degree seismic fortifica-tion zone,with a height of 225 m and a hyperbolic cylinder.Once the super large cooling tower is destroyed un-der extreme load such as earthquakes,the consequences will be catastrophic.At present,the research on cool-ing tower is mainly based on numerical simulation,and the experimental research is few.By designing and car-rying out a seismic shaking table model test with a scale ratio of 1∶33,the structural dynamic response character-istics of the cooling tower are studied,the stiffness degradation and damage of the structure under different seis-mic intensities are analyzed,the weak parts of the structure are found.Considering the results of dynamic test and numerical simulation,the reliability of the structure is evaluated,and reasonable anti-seismic measures and structural suggestions are put forward.
关键词
超大型冷却塔/钢筋混凝土/地震选波/振动台试验/数值模拟Key words
super large cooling tower/reinforced concrete/seismic wave selection/shaking table test/numerical simulation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据