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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第9卷    第6期    总第50期    2012年12月

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文章编号:1672-7029(2012) 06-0001-06
新型高速铁路客站大跨度站厅结构的竖向地震破坏特征
余志武1,2,邬亮1,2,国巍1,2

(1.中南大学土木工程学院,湖南长沙410075;
2.中南大学高速铁路建造技术国家实验室,湖南长沙410075
)

摘 要: “房桥合一”新型高铁客站的站厅层往往以大跨度钢桁架为其主要结构特征。基于此,以天津西站典型站厅结构为例,提取其主要结构单元,选取多条竖向地震强震记录,并综合采用静力和动力弹塑性方法,研究典型站厅结构大跨度钢桁架单元的竖向地震屈服机制和破坏特征。此外,与站厅结构动力弹塑性计算结果对比,进一步验证了多模态Pushdown 方法在大跨结构竖向抗震性能评估中快速有效。

 

关键字: 房桥合一;站厅结构;竖向地震;屈服机制;破坏特征

Seismic failure characteristics of long-span station hall structure of new type of high-speed railway station under vertical earthquake excitation
YU Zhi-wu1,2,WU Liang1,2,GUO Wei1,2

1.School of Civil Engineering,Central South University,Changsha 410075,China;
2.National Engineering Laboratory for High Speed Railway Construction,Changsha 410075,China

Abstract:The station hall of new type of integrated building-bridge high-speed railway station usually possesses long-span steel trusses as its main structural feature.Considering this point,the station hall of Tianjin West Railway Station was referred and adopted to extract the main structural unit,select multiple vertical strong earthquake records,adopt taken as an example elastic-plastic methods synthetically.Then,the failure characteristic and yielding mechanism of typical station hall structure under vertical earthquake excitation were systematically studied.In addition,by comparing with dynamic elastic-plastic calculating results of station hall,the advantages of multiple modal Pushdown method in seismic performance assessment of long-span structure were further validated.

 

Key words: integrated building-bridge structure; station hall structure; vertical earthquake; yielding mechanism; failure characteristics

ISSN 1672-7029
CN 43-1423/U

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