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首页> 外文期刊>Journal of aerospace engineering >Experimental Study of RC Prefabricated Shear Walls with Shear Keys Affected by a Slotted Floor Slab
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Experimental Study of RC Prefabricated Shear Walls with Shear Keys Affected by a Slotted Floor Slab

机译：由开槽地板平板影响剪切键RC预制剪力墙的实验研究

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摘要

Prefabricated RC shear walls are widely used in practical engineering due to their convenient construction. For ease of transport, they are commonly divided into smaller limbs and assembled on site. Steel panel shear keys are therefore adopted to connect the wall limbs and ensure assembly strength and ductility. However, the relative displacement between precast wall limbs can lead to severe damage of floors and, conversely, the wall limbs may be damaged due to the uncoordinated deformation of floor slabs. To this end, the present paper proposes a slotted floor slab with polystyrene-infilled slots set near the wall limbs for increasing the independence of the deformation of limbs. The study focused on the interaction of shear wall limbs and slotted floors. Three specimens of reinforced concrete prefabricated shear walls with shear keys were designed: (1) one specimen without floor slabs; (2) one specimen equipped with a conventional floor slab; and (3) one specimen with a slotted floor slab. Quasi-static tests were conducted, which revealed that conventional floor slabs can increase the lateral resistance and stiffness of the specimen while sacrificing ductility. The slotted floor slabs, in comparison, guarantee deformation ability without weakening the dry-connected shear walls. Above all, floor slabs are better protected if slots are set to release concentrated deformation. (c) 2019 American Society of Civil Engineers.
机译：由于其施工方便，预制的RC剪力墙广泛用于实用工程。为了便于运输，它们通常分为较小的肢体并在现场组装。因此采用钢板剪切键连接壁肢并确保装配强度和延展性。然而，预制壁肢体之间的相对位移可能导致楼层严重损坏，并且相反，由于地板板的不协调变形，壁肢可能会损坏。为此，本文提出了一个开槽地板平板，其中包含聚苯乙烯infilled槽，靠近壁肢，以增加肢体变形的独立性。该研究专注于剪力墙四肢和开槽地板的相互作用。设计了三个带剪切键的钢筋混凝土预制剪力墙标本：（1）一个没有落地板的样品; （2）一个配备常规楼板的试样; （3）一个带开槽地板板的样品。进行了准静态试验，其显示，传统的底板可以增加样品的横向电阻和刚度，同时牺牲延展性。相比之下，开槽地板板可以保证变形能力而不削弱干连接的剪力墙。最重要的是，如果插槽设定为释放集中变形，则楼层板材更好地受到保护。 （c）2019年美国土木工程学会。

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