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大氣腐蝕干煤棚焊接空心球對結構承載力影響研究
高鵬
摘 要

(遼寧工程技術大學建筑工程學院, 阜新 123000)

[摘要]含硫煤會使干煤棚支承構件腐蝕而造成網殼結構失穩倒塌,有必要對網殼結構服役期間的整體穩定和腐蝕程度之間的關系進行研究。基于電化學加速腐蝕的方法和法拉第定律,計算出通電量和通電時間,定量控制干煤棚焊接空心球試件的腐蝕量,通過試驗得出試件抗壓極限承載力,經回歸分析得出試件抗壓極限承載力和腐蝕率之間的關系,并對干煤棚實例進行數值分析,得出網殼結構服役期間經受大氣腐蝕的整體穩定變化規律,并預測該干煤棚結構安全使用年限為34年。

[關鍵詞]干煤棚; 焊接空心球; 電化學腐蝕; 極限承載力; 數值模擬

中圖分類號:TU317+.2文獻標識碼:A文章編號:1002-848X(2019)04-0098-05

 

Study on effect of atmospheric corroded dry coal shed welded hollow sphere on structural bearing capacity

Gao Peng

(Architectural Engineering Institute, Liaoning Technical University, Fuxin 123000, China)

Abstract: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.

Keywords:dry coal shed; welded hollow sphere; electrochemical corrosion; ultimate bearing capacity; numerical simulation

 

作者簡介:高鵬,碩士,助理工程師,Email:[email protected]

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