宝钢环形炉烟囱结构可靠性分析和加固技术研究-结构工程专业毕业论文.docx

宝钢环形炉烟囱结构可靠性分析和加固技术研究专 业:结构工程硕士生:范江民指导教师:姚继涛
摘 要
宝山钢铁股份有限公司钢管厂环形炉烟囱建于海洋性工业环境之中,使用条件复杂,并且其筒身附设有大容量的水箱, 结构形式很特殊,其目前的使用状况不仅难以满足正常使用和耐久性方面的要求,并且可能对结构安全造成威胁。
论文对宝钢钢管厂环形炉烟囱的可靠性和加固技术进行了系统研究。首先,根据调查检测结果,对环形炉烟囱目前的使用状况进行了深入分析。其次,对环形炉烟囱结构进行了有限元力学分析和承载力、受热温度、裂缝、变形校核。其次, 根据烟囱使用状况和计算分析的结果,分析烟囱损伤和缺陷的原因。第三,针对一般的钢筋混凝土烟囱,根据烟囱可靠性的影响因素,完善了烟囱可靠性的评定指标和评定标准,对烟囱可靠性的评定方法进行了改进,并对环形炉烟囱的可靠性进行了评价。最后,针对环形炉烟囱存在的问题,研究制定了可行的维修加固方案,对其可能产生的负面效应进行了论证。
论文研究成果不仅揭示了环形炉烟囱损伤、缺陷的成因以
及力学、物理性能,而且改进了钢筋混凝土烟囱可靠性鉴定的方法,对环形炉烟囱的可靠性作出了合理的评价。论文提出的维修热固方案,不仅使环形炉濯囱长期存在的瓣遂最终雩寻到勰决,而且对软土地基上钢筋混凝土烟囱的处理也有很大的参考价值。
关键谲:惩巍,可靠性,鉴定,翻闺
Studies oil Reliability Analysis and Reinforcement Technique about Bao-steel Hoop Stove Chimney
Specialty:Civil Engineering Name:Fan JiangMin Instructor:Yao Jitao
ABSTRACT
Hoop-stove chimney in the Bao-steel pany steel pipe factory set up in oceanic industrial environment plex working conditions。and structurel form壕at a heavy-duty tank is attached to the canister is very currently
its condition not only hard satisfies the normal usage and request
&the durability but also possibly threatens structural safety.
The systemic study on reliability and reinforcemem technique about hoop-stove chimney of the Bao-steel pany steel pipe factory is made。Firstly,according to investigate the
examination result,the current usage of hoop—stove chimney is
proceeded thomugh analysis。Secondly,the finite element mechanical analysis and some check including beating capacity、 heating temperature、fracture and deformation about hoop-stove
chimney are next in order,in light of usage
condition mad result of calculation and analysis,the reason for chimney impairment and defect is analyzed;Fourthly,for the general reinforced concrete chimney,according to reliability
influencing factor of chimney,assess index and criterion for evaluation of chimney reliability is perfected and appraisal methods of chimney reliability is improved and reliability of chimney the chimney is ev