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Research of Mechanical Behaviors and Key Techniques of Steel-concrete Box Beam in Beijing South Station Viaduct

机译：北京南站高架桥钢混箱梁受力性能及关键技术研究

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摘要

The research results of key techniques of steel-concrete box beam in Beijing South Station Viaduct are summarized in this paper, which include design method of sections with varied-width in curved composite beams, analysis of mechanical behaviors of irregular crotch of composite beams in positive and negative moment zone, optimization design and ultimate bearing capacity analysis of steel coping, ultimate bearing capacity analysis of concrete filled steel tubular column foot, and analysis of additional influence of large-diameter piles settlement on subway tunnel. Several design advises are obtained, which can give reference for similar composite beams.
机译：总结了北京南站高架桥钢混箱梁关键技术的研究成果，包括弯曲复合梁变幅截面的设计方法，正复合梁不规则c的力学性能分析。负弯矩区，钢拱顶的优化设计和极限承载力分析，钢管混凝土柱脚的极限承载力分析以及大直径桩沉降对地铁隧道的附加​​影响分析。获得了一些设计建议，可以为类似的复合梁提供参考。

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