SEISMIC DESIGN CHARACTERIZATION OF RC SPECIAL MOMENT RESISTING FRAMES IN PAKISTAN-FIELD SURVEY TO LABORATORY EXPERIMENTS

Journal of Engineering and Applied Sciences , University of Engineering and Technology, Peshawar Pub Date : 2016-12-31 DOI:10.25211/JEAS.V35I2.2057

Y. I. Badrashi, Qaisar Ali, M. Ashraf, M. Rashid

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引用次数: 8

Abstract

This study was undertaken to study the influence of construction deficiencies on hysteretic behavior of exterior beam-column connections. Building stock survey was conducted in five major cities of Pakistan for identification and quantification of material and detailing disparities between design specifications and construction practices. The effect of these disparities was studied using quasi-static cyclic testing on two exterior beam-column connections; EJ-1A (code-compliant) with no deficiencies and EJ-2A (non-compliant) incorporating all identified deficiencies. Damage patterns and hysteretic force-deformation behavior of these models is presented and the performance of the two specimens is compared. The study found that moderate to high deficiencies exist between design specifications and construction practices for the construction of RC buildings in Pakistan. The study also concluded that significant loss of strength and ductility is observed between code-compliant and non-code-compliant exterior beam-column connections subjected to reverse cyclic loading.

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巴基斯坦钢筋混凝土特殊抗弯矩框架抗震设计特征——现场调查与室内试验

本研究旨在研究结构缺陷对外部梁柱连接的滞回性能的影响。在巴基斯坦的五个主要城市进行了建筑存量调查，以确定和量化材料，并详细说明设计规格和建筑做法之间的差异。通过对两个外部梁柱连接的准静力循环试验研究了这些差异的影响;没有缺陷的EJ-1A(代码兼容)和包含所有识别缺陷的EJ-2A(不兼容)。介绍了两种模型的损伤形态和滞回力变形特性，并对两种模型的性能进行了比较。研究发现，在巴基斯坦建造钢筋混凝土建筑的设计规范和施工实践之间存在中度到高度的缺陷。研究还得出结论，在反向循环荷载作用下，符合规范和不符合规范的外部梁柱连接之间的强度和延性损失显著。

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Journal of Engineering and Applied Sciences , University of Engineering and Technology, Peshawar

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