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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Damage response of multistorey r/c buildings with different structural systems subjected to seismic motion of arbitrary orientation
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Damage response of multistorey r/c buildings with different structural systems subjected to seismic motion of arbitrary orientation

机译：任意方向地震运动对具有不同结构体系的多层遥控大厦的损伤响应

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In the present study the combined influence of seismic orientation and a number of parameters characterizing the structural system of Reinforced Concrete (R/C) buildings on the level of expected damages are examined. For the purposes of the above investigation eight medium-rise buildings are designed on the basis of the current seismic codes. The structural characteristics examined are the ratio of the base shear received by the structural walls, the ratio of horizontal stiffness in two orthogonal directions and the structural eccentricity. Then, the buildings are analyzed by nonlinear time response analysis using 100 bidirectional earthquake ground motions. The two horizontal accelerograms of each ground motion are applied along horizontal orthogonal axes, forming 72 different angles with the structural axes. The structural damage is expressed in terms of the Park and Ang damage index. The results of the analyses revealed that the damage level of the buildings is strongly affected by the incident angle of the ground motion. The extent at which the orientation of the seismic records influences the damage response depends on the structural system and the distance of the record to the fault rupture. As a consequence, the common practice of applying the earthquake records along the structural axes can lead to significant underestimation of structural damage. Also, it was shown that the structural eccentricity can significantly differentiate the seismic damage level, as well as the impact of the earthquake orientation on the structural damage. Copyright (c) 2015 John Wiley & Sons, Ltd.
机译：在本研究中，研究了地震方向和表征钢筋混凝土（R / C）建筑结构系统的许多参数对预期破坏水平的综合影响。为了上述研究的目的，根据当前的地震规范设计了八座中层建筑。检查的结构特性是结构壁承受的基础剪力比，两个正交方向的水平刚度比和结构偏心率。然后，通过使用100次双向地震地震动的非线性时间响应分析来对建筑物进行分析。沿水平正交轴应用每个地面运动的两个水平加速度图，与结构轴形成72个不同的角度。结构破坏用Park和Ang破坏指数表示。分析结果表明，建筑物的破坏程度受地震动入射角的强烈影响。地震记录的方向影响损伤响应的程度取决于结构系统和记录到断层破裂的距离。结果，沿结构轴应用地震记录的常规做法可能导致对结构破坏的严重低估。此外，还表明，结构偏心率可以显着地区分地震破坏程度，以及地震方向对结构破坏的影响。版权所有（c）2015 John Wiley＆Sons，Ltd.

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