摘要
含硫煤会使干煤棚支承构件腐蚀而造成网壳结构失稳倒塌,有必要对网壳结构服役期间的整体稳定和腐蚀程度之间的关系进行研究。基于电化学加速腐蚀的方法和法拉第定律,计算出通电量和通电时间,定量控制干煤棚焊接空心球试件的腐蚀量,通过试验得出试件抗压极限承载力,经回归分析得出试件抗压极限承载力和腐蚀率之间的关系,并对干煤棚实例进行数值分析,得出网壳结构服役期间经受大气腐蚀的整体稳定变化规律,并预测该干煤棚结构安全使用年限为34年。
Sulfur-bearing coal corrodes the support of dry coal shed to cause unstable collapse of reticulated shell structure. It is necessary to study the relationship between the overall stability and corrosion degree of reticulated shell structure in service. Based on electrochemical accelerated corrosion method and Faraday's law,the quantity of electricity and electric time were calculated,and quantitative control was conducted on the corrosion of dry coal shed welding hollow sphere specimen. Through test,ultimate compressive bearing capacity of the specimen was obtained,and the relationship between the ultimate compressive bearing capacity of the specimen and the corrosion rate was obtained through regression analysis. The numerical analysis of a dry coal shed project was carried out to obtain the overall stable change rule of reticulated shell structure under atmospheric corrosion during the service,and the safe service life of the dry coal shed structure was predicted to be 34 years.
作者
高鹏
Gao Peng(Architectural Engineering Institute,Liaoning Technical University,Fuxin 123000,China)
出处
《建筑结构》
CSCD
北大核心
2019年第4期98-102,共5页
Building Structure
关键词
干煤棚
焊接空心球
电化学腐蚀
极限承载力
数值模拟
dry coal shed
welded hollow sphere
electrochemical corrosion
ultimate bearing capacity
numerical simulation
