某炼钢厂老厂房的结构鉴定及加固处理
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摘要
对20世纪60年代建造的某炼钢厂老厂房进行结构安全检测鉴定,混凝土柱、屋架、托架及屋面板等存在顺筋裂缝,混凝土脱落、钢筋锈蚀,柱间支撑及屋盖支撑存在较多缺陷且设置不足,存在较大安全隐患。结合震害经验确定加固设计方案,对混凝土下柱采用外包钢套及加大截面综合法进行加固,对混凝土上柱、屋架及托架采用钢构套加固,混凝土屋面板更换为钢屋面板,完善抗震构造措施,取得了较好的加固效果。
Structure inspection and appraisal of a steel plant's old factory building was carried out,the results showed that for reinforced concrete members such as columns,roof trusses,trussed girders and roof panels,cracks occurred along steel bars,peeling of concrete covers and corrosion of steel bars.Also there were many defects of roof bracings and bracings between columns,and the number of bracings was insufficient.There were many serious security troubles to the factory building.A reinforcement design was made based on experiences of earthquake disasters.The lower concrete columns were strengthened with section enlarging and steel plate,the upper concrete columns,roof trusses and trussed girders were strengthened with steel frame.The old concrete roof panels were replaced with the steel ones,and seismic measures were improved.Good result was obtained for the strengthening of the factory building,and the design could be referred by the strengthening of similar structures.
Structure inspection and appraisal of a steel plant's old factory building was carried out,the results showed that for reinforced concrete members such as columns,roof trusses,trussed girders and roof panels,cracks occurred along steel bars,peeling of concrete covers and corrosion of steel bars.Also there were many defects of roof bracings and bracings between columns,and the number of bracings was insufficient.There were many serious security troubles to the factory building.A reinforcement design was made based on experiences of earthquake disasters.The lower concrete columns were strengthened with section enlarging and steel plate,the upper concrete columns,roof trusses and trussed girders were strengthened with steel frame.The old concrete roof panels were replaced with the steel ones,and seismic measures were improved.Good result was obtained for the strengthening of the factory building,and the design could be referred by the strengthening of similar structures.
引文
[1]GB50144—2008工业建筑可靠性鉴定标准[S].
[2]GB50023—2009建筑抗震鉴定标准[S].
[3]GB50011—2010建筑抗震设计规范[S].
[4]JGJ116—2009建筑抗震加固技术规程[S].
[5]胡孔国,娄宇.汶川地震中工业建筑震害调研及抗震设计建议[J].工业建筑,2009,39(1):7-15,46.
[6]胡晓鹏,徐雷,韩晓雷.汶川8.0级地震单层工业厂房的震害分析[J].西安建筑科技大学学报:自然科学版,2008,40(5):663-666.
[7]《汶川地震建筑震害调查与灾后重建分析报告》编委会.汶川地震建筑灾害调查与灾后重建分析报告[M].北京:中国建筑工业出版社,2008.
[8]清华大学,西南交通大学,北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008(4):1-9.
[9]万馨,赵根田,雷军.某炼钢厂房结构体系的改造与加固[J].工业建筑,2009,39(8):13-15.
[10]张志强,张轲,徐耀武.某钢铁公司炼钢车间主厂房结构现状质量检测[J].工业建筑,2008,38(2):103-105.
[2]GB50023—2009建筑抗震鉴定标准[S].
[3]GB50011—2010建筑抗震设计规范[S].
[4]JGJ116—2009建筑抗震加固技术规程[S].
[5]胡孔国,娄宇.汶川地震中工业建筑震害调研及抗震设计建议[J].工业建筑,2009,39(1):7-15,46.
[6]胡晓鹏,徐雷,韩晓雷.汶川8.0级地震单层工业厂房的震害分析[J].西安建筑科技大学学报:自然科学版,2008,40(5):663-666.
[7]《汶川地震建筑震害调查与灾后重建分析报告》编委会.汶川地震建筑灾害调查与灾后重建分析报告[M].北京:中国建筑工业出版社,2008.
[8]清华大学,西南交通大学,北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008(4):1-9.
[9]万馨,赵根田,雷军.某炼钢厂房结构体系的改造与加固[J].工业建筑,2009,39(8):13-15.
[10]张志强,张轲,徐耀武.某钢铁公司炼钢车间主厂房结构现状质量检测[J].工业建筑,2008,38(2):103-105.
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