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Seismic Assessment of Freestanding Ceramic Vase with Shaking Table Testing and Performance-Based Earthquake Engineering
Journal of Earthquake Engineering ( IF 2.5 ) Pub Date : 2021-11-02 , DOI: 10.1080/13632469.2021.1979132
Baofeng Huang 1 , Selim Günay 2 , Wensheng Lu 3
Affiliation  

ABSTRACT

Earthquake damage to freestanding nonstructural components has occurred in past earthquakes. Ceramic vase is one of the most vulnerable freestanding nonstructural components in museums, residential, and historical buildings. To investigate the seismic performance of a freestanding vase, shaking table tests were conducted, where four motions, consisting of two historic and two artificial ones, were selected and generated. The kinetic friction coefficient was acquired with a slow-pull test, which was used to define the possible response modes. The rocking and sliding responses of the vase were observed by accelerometers and high-speed camera. Results showed that the response mode of the vase was highly dependent on the input peak acceleration, i.e., the higher the peak acceleration, the larger the peak and residual displacements and rocking angles. In addition, the dynamic response varies with the excitation of different input motions, indicating that the frequency contents of the input motion also affect the rocking intensity. Generally, the experimental kinetic friction coefficient from the shaking table test matched the one from the slow-pull test closely, demonstrating that the two approaches were reasonable and accurate enoughand can be accepted. Using the philosophy of the second generation of performance-based earthquake engineering, damage modes, performance levels, and fragility curves were defined and generated on account of crack intensity, repair actions, and rocking angles, respectively. These efforts are also beneficial for the seismic evaluation of the freestanding objects in building structures.



中文翻译:

采用振动台测试和基于性能的地震工程对独立式陶瓷花瓶进行抗震评估

摘要

过去的地震中曾发生过对独立非结构构件的地震破坏。陶瓷花瓶是博物馆、住宅和历史建筑中最脆弱的独立非结构部件之一。为了研究独立式花瓶的抗震性能,进行了振动台测试,其中选择并生成了四种运动,包括两种历史运动和两种人工运动。动摩擦系数是通过慢拉测试获得的,用于定义可能的响应模式。通过加速度计和高速摄像机观察花瓶的摇摆和滑动响应。结果表明,花瓶的响应模式高度依赖于输入峰值加速度,即峰值加速度越高,峰值和残余位移和摇摆角越大。此外,动态响应随着不同输入运动的激励而变化,表明输入运动的频率成分也会影响摇摆强度。总体而言,振动台试验的动摩擦系数与慢拉试验的试验动摩擦系数非常接近,表明这两种方法是合理和准确的,是可以接受的。使用第二代基于性能的地震工程的理念,分别根据裂纹强度、修复动作和摇摆角度定义和生成损伤模式、性能水平和脆性曲线。这些努力也有利于建筑结构中独立物体的抗震评估。动态响应随着不同输入运动的激励而变化,表明输入运动的频率成分也会影响摇摆强度。总体而言,振动台试验的动摩擦系数与慢拉试验的试验动摩擦系数非常接近,表明这两种方法是合理和准确的,是可以接受的。使用第二代基于性能的地震工程的理念,分别根据裂纹强度、修复动作和摇摆角度定义和生成损伤模式、性能水平和脆性曲线。这些努力也有利于建筑结构中独立物体的抗震评估。动态响应随着不同输入运动的激励而变化,表明输入运动的频率成分也会影响摇摆强度。总体而言,振动台试验的动摩擦系数与慢拉试验的试验动摩擦系数非常接近,表明这两种方法是合理和准确的,是可以接受的。使用第二代基于性能的地震工程的理念,分别根据裂纹强度、修复动作和摇摆角度定义和生成损伤模式、性能水平和脆性曲线。这些努力也有利于建筑结构中独立物体的抗震评估。表明输入运动的频率内容也会影响摇摆强度。总体而言,振动台试验的动摩擦系数与慢拉试验的试验动摩擦系数非常接近,表明这两种方法是合理和准确的,是可以接受的。使用第二代基于性能的地震工程的理念,分别根据裂纹强度、修复动作和摇摆角度定义和生成损伤模式、性能水平和脆性曲线。这些努力也有利于建筑结构中独立物体的抗震评估。表明输入运动的频率内容也会影响摇摆强度。总体而言,振动台试验的动摩擦系数与慢拉试验的试验动摩擦系数非常接近,表明这两种方法是合理和准确的,是可以接受的。使用第二代基于性能的地震工程的理念,分别根据裂纹强度、修复动作和摇摆角度定义和生成损伤模式、性能水平和脆性曲线。这些努力也有利于建筑结构中独立物体的抗震评估。证明这两种方法足够合理和准确,是可以接受的。使用第二代基于性能的地震工程的理念,分别根据裂纹强度、修复动作和摇摆角度定义和生成损伤模式、性能水平和脆性曲线。这些努力也有利于建筑结构中独立物体的抗震评估。证明这两种方法足够合理和准确,是可以接受的。使用第二代基于性能的地震工程的理念,分别根据裂纹强度、修复动作和摇摆角度定义和生成损伤模式、性能水平和脆性曲线。这些努力也有利于建筑结构中独立物体的抗震评估。

更新日期:2021-11-02
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