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Development of a Simplified Analytical Method to Estimate the Seismic Response of Reinforced Concrete Frames with Solid Masonry Infills.

机译:开发一种简化的分析方法来估计带有实心砖石填充物的钢筋混凝土框架的地震反应。

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摘要

This thesis discusses the analysis of the lateral force-vs-drift relation of reinforced concrete (RC) frames with masonry infill panels under in-plane lateral loads. Such structures have been the topic of several studies due to their recurring catastrophic failures during seismic events. Due to the large number of variables that can affect their seismic performance and lead to various possible failure mechanisms there is no widely accepted method for the assessment of the structural behavior of infilled frames under seismic loads. A parametric study was performed here using detailed analytical models which provided insight to the influence of the various design parameters and material properties. The observations from the parametric study and selected experimental studies were taken into account in the development of a simplified procedure that is proposed here for the estimation of the force-vs-drift behavior of infilled frames. With the proposed method, the force-vs-drift curve for an infilled RC frame can be estimated based on the frame geometry, reinforcing details, and basic material properties. The simplified method is based upon the prediction of the expected failure pattern for an infilled frame which can be achieved using some simple to apply criteria based on the relative shear and flexural strengths of the frame and infill. Four classes have been proposed ranging from strong infill- strong frame cases to weak infill- weak frame. Each class tends to develop a different failure pattern that may include plastic hinges and/or shear failures in the columns as well as diagonal sliding and/or cracking of the infill. The framework has been validated with data from experimental and analytical studies on single-bay, single-story specimens with a wide range of geometries, design details, and material properties. The comparison of the analytical and experimental results indicates that the proposed methodology, although simplified, it can successfully capture the main features of the seismic response of infilled frames, including the initial stiffness as well as the strength and drift at the apparent yield point, peak load and onset of residual capacity.
机译:本文讨论了在平面侧向荷载作用下带砌体填充面板的钢筋混凝土框架的侧向力与漂移关系。由于这种结构在地震事件中反复发生灾难性破坏,因此已成为几项研究的主题。由于大量变量会影响其抗震性能并导致各种可能的破坏机制,因此,目前尚没有一种广泛接受的方法来评估地震荷载下填充框架的结构性能。这里使用详细的分析模型进行了参数研究,该模型提供了对各种设计参数和材料特性的影响的洞察力。在简化程序的开发过程中考虑了参数研究和选定实验研究的观察结果,在此提出了一种简化程序,用于估算填充框架的力-VS-漂移行为。使用所提出的方法,可以基于框架的几何形状,钢筋的细节和基本的材料特性来估计填充的RC框架的力-VS-漂移曲线。简化方法基于对填充框架的预期破坏模式的预测,这可以使用一些简单的基于框架和填充物的相对剪切强度和抗弯强度的适用标准来实现。提出了四类,从强填充-强框架情况到弱填充-弱框架。每一类趋向于发展出不同的破坏模式,其中可能包括塑料铰链和/或立柱中的剪切破坏,以及填充物的对角滑动和/或破裂。该框架已通过对单舱,单层标本的实验和分析研究数据进行了验证,这些标本具有各种几何形状,设计细节和材料特性。分析和实验结果的比较表明,所提出的方法虽然简化了,但可以成功地捕获填充框架的地震响应的主要特征,包括初始刚度以及在明显屈服点,峰值处的强度和漂移。负载和剩余容量的开始。

著录项

  • 作者

    Reese, Austin.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Engineering Civil.
  • 学位 M.S.
  • 年度 2014
  • 页码 121 p.
  • 总页数 121
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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