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钢管混凝土系杆拱桥是一种被广泛应用的桥梁结构形式,其施工工艺日趋成熟,但施工安全质量风险仍不可小视。以上海某下承式钢管混凝土系杆拱桥为工程实例,通过对桥梁施工过程的回顾和总结,提出了系杆拱桥施工过程中钢管拱肋加工、吊装定位、混凝土灌注、吊杆安装以及各阶段测量监控的质量控制要点。 相似文献
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系杆拱桥是由拱肋、系杆、吊杆、行车道板及桥面系等组合起来的桥梁结构。文章结合系杆拱桥静载试验实例,阐述了系杆拱桥的主要受力特点以及理论分析方法,并通过静载试验论述了系杆拱桥主要控制截面的确定方法,以及评定系杆拱桥工作状态的分析方法与指标。 相似文献
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桥梁施工的控制是桥梁施工技术中重要的环节之一。本文以某钢箱系杆拱桥工程项目为例,利用Midas/Civil有限元分析软件,对下承式钢箱系杆拱桥进行建模分析。对施工过程中的结构内力和位移等进行监控,对比理论数据与实际监控数据,控制拱桥的施工过程在允许的误差范围内。研究表明,模拟计算数据与实际监控数据在允许的误差范围内,为现场的施工提供了一定的理论依据。 相似文献
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结合汀泗桥140m钢箱系杆拱桥的施工监控实例,简要的介绍了高速铁路客运专线下钢箱系杆拱桥拼装与无砟轨道施工的变形控制,通过实测值与理论值的对比分析来指导施工,以期保证桥梁的实际受力符合设计受力状态,桥梁线型满足运营要求。 相似文献
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Andrea Kahn 《Journal of Architectural Education》2013,67(2):62-64
Sitelessness and loss of place suggest the instability of boundaries that otherwise sustain the legibility of public institutions. Such conditions negate conventional affinities between architecture, ceremonial urban space, monuments, and monumental sculpture. Nowadays, the theoretical basis for a relationship between these actors is in flux. This article takes up several different contemporary conceptions of public space and the public thing and employs them in an interpretation of two recent projects: Maya Lin's Vietnam Veterans Memorial and Richard Serra's ill-fated Tilted Arc. These projects embody changing conditions in the dialogue between art, architecture, and the city. 相似文献
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对系杆拱桥进行有限元建模,分析拱的平面内屈曲长度系数,并将其与EC3中推荐的数值进行比较。首先简要介绍了EC3中针对拱的平面内屈曲性能提出的分析方法。随后说明了系杆拱桥的模型、桥梁特性和计算方法,并进行了参数分析。同时也对拉索损坏的情况进行了讨论。最后归纳了研究结论。 相似文献
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结合麓湖桥中式拱桥施工实例,介绍了钢筋混凝土无铰板拱拱圈施工技术,并详细阐述了支撑拱圈的满堂碗扣支架的搭设方案设计与计算.该工程仅4个月就完成施工,施工安全、工程质量优良,可供同类工程参考. 相似文献
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Jeffrey Cook 《Journal of Architectural Education》2013,67(1):62-64
Abstract JAE's White Issue is long overdue. The notion that architectural experimentation requires a rigorous feedback between design and research has been at play in design pedagogy since at least the 1960s and 1970s, which included the seminal research studio by Robert Venturi, Denise Scott Brown, and Steven Izenour, Learning from Las Vegas 1; the rise of operations research and systems engineering; the urban networks research of Shadrach Woods, the Smithsons, Constantinos Doxiadis, or Kenzo Tange; and the structure and materials research of Buckminster Fuller, Frei Otto, and Robert Le Ricolais, to name but a few. Concerns about the deterministic instrumentalism of systems thinking led to a new wave of humanism and composition, seen especially in the postmodernist uses of both historical examples and junkspace vernaculars as a Disneyesque brand image. The work of Venturi and Scott Brown, ironically, was to lead the way on the heels of the “duck vs. decorated shed” conclusions of Learning from Las Vegas.2 Unlike most postmodernists, however, Venturi and Scott Brown did not abandon research, and their understanding of the relationships between pop culture, branding, and marketing techniques remains sophisticated and timely. 相似文献
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介绍京杭运河大桥边跨拱肋支架的设计与施工,对上承式中小型中跨度拱桥施工方案的设计、不规则大型混凝土构件现浇支架的设计、现浇支架基础的处理、混凝土结构物三维线形的施工控制等方面进行探讨。 相似文献
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上海川杨河新建工程为提篮式钢系杆拱桥施工,所以桥的拱肋线型控制难、合龙精度和变形等成为施工中的难题。工程通过施工方案的分析与比选,采用了“先拱后梁”的施工方式,顺利地解决了难题并加快了施工进度。 相似文献