本文選題：冷卻塔　切入點：檢測鑒定　出處：《防災減災工程學報》2017年01期

【摘要】：某冷卻塔已使用20多年,存在一定程度的老化和破損,對其外觀缺陷、混凝土碳化程度、鋼筋銹蝕程度及傾斜度等進行檢測鑒定,應用有限元方法,計算該冷卻塔在風荷載、溫度作用、重力荷載單獨作用和組合作用下的內力和變形,并取組合作用進行整體穩(wěn)定性和局部穩(wěn)定性分析,驗算塔身裂縫發(fā)展情況。結果表明,冷卻塔剛度、承載力、安全系數(shù)、整體穩(wěn)定性和局部穩(wěn)定性均能滿足現(xiàn)行規(guī)范的規(guī)定,塔身裂縫除局部筒壁不滿足最大裂縫寬度限制的要求外,其它范圍均滿足。根據(jù)檢測鑒定及有限元計算結果,對冷卻塔采用粘碳纖維布、混凝土表面防碳化處理、鋼筋除銹防銹等加固補強措施。
[Abstract]:A cooling tower has been in use for more than 20 years, and there exists some degree of aging and breakage. The external defects, the degree of concrete carbonization, the degree of corrosion of steel bar and the inclination of the cooling tower are tested and identified, and the wind load of the cooling tower is calculated by using finite element method. The internal force and deformation under the action of temperature and gravity load alone and combined, and the integral stability and local stability of the combined action are analyzed to check the development of the cracks in the tower body. The results show that the stiffness and bearing capacity of the cooling tower, The safety factor, global stability and local stability can all meet the requirements of the current code. Except for the requirement of the maximum crack width limit on the local cylinder wall, the other ranges are satisfied. According to the results of inspection and identification and finite element calculation, The cooling tower is strengthened with carbon fiber sticky cloth, anti-carbonization treatment of concrete surface, rust and rust removal of steel bar and so on.
【作者單位】： 武漢大學土木建筑工程學院;
【基金】：國家自然科學基金項目(51578428)資助
【分類號】：TQ051.5

【相似文獻】

相關會議論文 前1條

1 郭平;;加強U形波紋管的有限元計算[A];第十一屆全國膨脹節(jié)學術會議膨脹節(jié)設計、制造和應用技術論文選集[C];2010年

，

本文編號：1690800