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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Influence of boundary conditions on the out-of-plane response of brick masonry walls in buildings with RC slabs
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Influence of boundary conditions on the out-of-plane response of brick masonry walls in buildings with RC slabs

机译：边界条件对带有RC板的建筑物中砖砌墙面外响应的影响

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摘要

In modern unreinforced masonry buildings with stiff RC slabs, walls of the top floor are most susceptible to out-of-plane failure. The out-of-plane response depends not only on the acceleration demand and wall geometry but also on the static and kinematic boundary conditions of the walls. This paper discusses the influence of these boundary conditions on the out-of-plane response through evaluation of shake table test results and numerical modelling. As a novum, it shows that the in-plane response of flanking elements, which are orthogonal to the wall whose out-of-plane response is studied, has a significant influence on the vertical restraint at the top of the walls. The most critical configuration exists if the flanking elements are unreinforced masonry walls that rock. In this case, the floor slabs can uplift, and the out-of-plane load-bearing walls loose the vertical restraint at the top. Numerical modelling confirms this experimentally observed behaviour and shows that slab uplift and the difference in base and top excitation have a strong influence on the out-of-plane response of the walls analysed. Copyright (C) 2016 John Wiley & Sons, Ltd.
机译：在具有刚性RC板的现代无钢筋砌体建筑中，顶层墙壁最容易发生面外破坏。平面外响应不仅取决于加速度需求和墙的几何形状，还取决于墙的静态和运动边界条件。本文通过评估振动台测试结果和数值建模，讨论了这些边界条件对平面外响应的影响。作为一个新词，它表明与研究了平面外响应的壁正交的侧翼元素的平面内响应对壁顶部的垂直约束有重大影响。如果侧翼元素是晃动的未加固砌体墙，则存在最关键的配置。在这种情况下，楼板可能会抬高，而平面外承重墙会松开顶部的垂直约束。数值模拟证实了这种实验观察到的行为，并显示了平板的隆起以及基础和顶部激励的差异对所分析壁的面外响应有很大影响。版权所有（C）2016 John Wiley＆Sons，Ltd.

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