大连国贸中心大厦超高层结构设计与研究
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摘要
大连国贸中心大厦地下6层,地上106层,结构高度433m,目前项目已施工至地下层1处,采用外巨柱框架+内型钢混凝土筒体超高层混合结构体系。通过合理的结构选型和构造措施,使新建结构既能与原基础可靠连接,又能满足塔楼结构抗震性能要求,同时也使已建地下室拆除加固量最小。结构采用基于性能的抗震设计方法,提高了重要和关键构件的安全性。通过弹性和弹塑性分析找到结构的薄弱部位,并采取合理的加强措施。采用多个空间计算程序对该结构进行了静力计算对比和动力特性及抗震性能分析,结果表明,设计选用的结构体系安全可靠,具有良好的抗震性能。
Dalian Guomao Tower with 6-story basement and 106-story above the ground level has a total height of 433m,which has already been constructed to the basement.A hybrid structural system of giant column steel frame and concrete core tube with steel reinforced is adopted.Reasonable structure system and detailed design were selected to ensure that the new structure has a firm connection with the original foundation,to satisfy the requirement of seismic design and to minimize the cost of structural strengthening on the demolished basement.Safety of essential structural components was enhanced by performance-based seismic design.Elastic and elastic-plastic analyses were conducted to locate and strengthen the structural weaknesses.Comparison of the static,dynamic and seismic analysis has verified the safety,reliability and seismic responses of the present structural system through many programs.The results show that the design and selection of the structural system are safe and reliable,and have a good seismic performance.
Dalian Guomao Tower with 6-story basement and 106-story above the ground level has a total height of 433m,which has already been constructed to the basement.A hybrid structural system of giant column steel frame and concrete core tube with steel reinforced is adopted.Reasonable structure system and detailed design were selected to ensure that the new structure has a firm connection with the original foundation,to satisfy the requirement of seismic design and to minimize the cost of structural strengthening on the demolished basement.Safety of essential structural components was enhanced by performance-based seismic design.Elastic and elastic-plastic analyses were conducted to locate and strengthen the structural weaknesses.Comparison of the static,dynamic and seismic analysis has verified the safety,reliability and seismic responses of the present structural system through many programs.The results show that the design and selection of the structural system are safe and reliable,and have a good seismic performance.
引文
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[2]沈祖炎,温东辉,李元齐.中国建筑钢结构技术发展现状及展望[J].建筑结构,2009,39(9):16-17.
[3]容柏生,李盛勇,陈洪涛,等.中国高层建筑中钢管混凝土柱的应用与展望[J].建筑结构,2009,39(9):34-36.
[4]华东建筑设计研究院有限公司.高银117大厦超限设计专家审查报告[R].2010.
[5]深圳华森建筑与工程顾问有限公司.深圳京基金融中心设计专家审查报告[R].2010.
[6]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[7]GB50223—2008建筑工程抗震设防分类标准[S].北京:中国建筑工业出版社,2008.
[8]大连工程地震勘测公司.大连国贸中心大厦工程场地地震安全性评价报告[R].2010.
[9]GB50009—2001建筑结构荷载规范[S].2006年版.北京:中国建筑工业出版社,2006.
[10]JGJ3—2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2011.
[11]中国建筑科学研究院建研科技股份有限公司.大连国贸中心大厦风致振动分析报告[R].2011.
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