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ANALYSIS AND TREATMENT OF ACCIDENT IN MILL BUILDINGS OF LIGHT-WEIGHT STEEL STRUCTURE WITH PORTAL FRAME AFTER SNOWSTORM
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摘要: 2007年3月初东北地区遭遇罕见暴雪，造成大量轻钢结构工程事故，有必要进行总结反思。针对某门式刚架轻钢工业厂房的事故进行较全面的分析，介绍结构损坏情况及鉴定结果，总结事故原因，同时提出修复加固处理方案。分析得出：包括北方地区女儿墙和南侧附房导致的堆雪作用以及清雪过程出现的次生灾害等是造成事故的主要原因，进而对当前轻钢结构设计提出建议。Abstract: In early March of 2007,the northeast region in China encountered an unusual snowstorm,which caused a large number of light-weight steel structure engineering accidents.It is necessary to summarize and intruspect.An overall analysis on a certain mill building of light-weight steel structure with portal frame.It is introduced the damage condition and appraisal result,and summarized the accident causes,moreover,it is also described the scheme of strengthening and rehabilitation.The paper comes to the conclusion that accumulated snow effect of parapet and southern attached building in North area and secondary disasters produced in the process of snow cleaning are the causes,so as to give suggestions on the current design of light-weight steel structures.
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Key words:
- light-weight steel structure /
- portal frame /
- accumulated /
- snow load parapet /
- snow cleaning
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[2] GBJ 987建筑结构荷载规范[S]; [3] GBJ 144-90工业厂房可靠性鉴定标准[S]; [4] CECS 102∶2002门式刚架轻型房屋钢结构技术规程[S]; [5] GB500092001建筑结构荷载规范[S]; [6] 路军,罗广宇.多脊和带女儿墙轻钢建筑在设计中应注意的问题[J].钢结构,2001,16(4):35-36; [7] 孙葆玮.建筑与雪[J].防灾博览,2006(2); [8] 王元清,王,石永久,等.门式刚架轻型房屋钢结构厂房的加固设计[J].工业建筑,2001,31(8):60-62; [9] 杨海波,李冬,王晓刚,等.暴风雪对轻钢结构工程破坏的原因分析及启示[J].煤炭工程,2006(9):41-42; [10] 蔡益燕.2007辽宁雪灾对轻型钢结构房屋建筑的启示[J].中国建筑金属结构,2007(4):33-34. -
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