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Midland Metropolitan Hospital Birmingham

机译：伯明翰米德兰都市医院

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摘要

Walsh was subcontracted to design the post-tensioned (PT) floors from levels 1-10, with a mezzanine floor level 4.5. This involved the individual design and detailing of 144 separate pours. The concrete strength class was C35/45 for the internal pours and C40/50 for the external pours. The slab thickness was 250mm on the level 1 car park, 300mm for the clinical floors, 275mm for the level 10 plant-room floor and a minimum of 350mm for the level 2 skirt. The layout was a regular 7.8 × 7.8m grid, which made the design relatively straightforward (Figures 1 and 2). The difficulty lay in the sheer size of the project, meaning that there were a large number of different joints to join the slab together, which were carefully placed for slab movement and shrinkage, to isolate cores and to divide the slabs into manageable pours. At the tender stage, it was decided that instead of using a boot joint (as seen in Figure 3) at the movement joints, shear load connectors would be used. This would decrease the amount of time required to construct the slab and also produce a more desired flat soffit, making M&E and finishes easier to install.
机译：沃尔什（Walsh）被分包以从1-10层设计夹层地板（4.5）的后张紧（PT）地板。这涉及到144个独立浇注的个性化设计和细节设计。内部浇筑的混凝土强度等级为C35 / 45，外部浇筑的混凝土强度等级为C40 / 50。 1级停车场的平板厚度为250mm，临床地板的厚度为300mm，10级机房地板的厚度为275mm，2级裙板的最小厚度为350mm。布局为规则的7.8×7.8m网格，这使设计相对简单（图1和2）。困难在于项目的绝对规模，这意味着有大量不同的接缝将平板连接在一起，并仔细放置以进行平板移动和收缩，以隔离岩心并将平板分成易于管理的浇筑。在招标阶段，决定不使用运动接头处的套管接头（如图3所示），而是使用剪切载荷连接器。这将减少建造平板所需的时间，并产生更理想的平坦拱腹，从而使M＆E和饰面更易于安装。

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  • 来源
    《Concrete》 |2017年第5期|38-40|共3页
  • 作者

    Ben Ume; Kuda Guti;

  • 作者单位
  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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