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首页> 外文期刊>Proceedings of the Institution of Civil Engineers >Strengthening the 1960s UK Commonwealth Institute hyperbolic paraboloid roof
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Strengthening the 1960s UK Commonwealth Institute hyperbolic paraboloid roof

机译：加强1960年代英联邦研究所双曲抛坑屋顶

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摘要

The Grade II*-listed 1960s roof to the former Commonwealth Institute consists of a central post-tensioned concrete hyperbolic paraboloid shell, typically only 75 mm thick, and is one of the few examples of large-scale concrete shell structures in the UK. After being unoccupied for a decade, in 2012, the Design Museum announced its plans to move into and redevelop the building. In order to make the space functional, the interior and foundations needed to be demolished and the entire 3100 m(2), 2000 t roof held up 20 m above ground temporarily while the new structure was constructed underneath. This paper explores in detail the steps taken to assess the relatively delicate existing roof structure for the change in loading and future movements in both the temporary and permanent conditions and the resulting innovative strengthening, repair and temporary works required. Limited historical drawings and papers were available, and therefore, non-destructive testing and careful intrusive investigations were used to obtain more information on the as-built details. In order to determine the structural behaviour, hand calculations were conducted to back-calculate the original design intent, and computer modelling was used to conduct sensitivity analyses of the load paths.
机译：20世纪60年代的20世纪60年代屋顶到前英联学院的屋顶包括一个中央后张紧的混凝土双曲抛物面壳，通常只有75毫米厚，是英国大型混凝土壳体结构的少数几个例子之一。在十年内无人居住后，在2012年，设计博物馆宣布其计划进入并重新开发建筑物。为了使空间功能，需要拆除的内部和基础，并且整个3100米（2），2000 T屋顶暂时占据了20米，而新结构构造在下面。本文详细探讨了评估临时和永久条件的加载和未来运动变化的相对精细的现有屋顶结构的步骤，并因此需要进行创新的加强，维修和临时工程。有限的历史图纸和论文可用，因此，不破坏性的测试和仔细的侵入性调查用于获得有关竣工细节的更多信息。为了确定结构行为，进行手动计算以回计算原始设计意图，并且使用计算机建模来进行负载路径的灵敏度分析。

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