Seismic performance of non-ductile detailing RC frames:An experimental investigation

IF 1.4 4区 工程技术 Q3 ENGINEERING, CIVIL
B. A. Hidayat, Hsuan-Teh Hu, F. Hsiao, A. Han, Panapa Pita, Y. Haryanto
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引用次数: 3

Abstract

Non-ductile detailing of Reinforced Concrete (RC) frames may lead to structural failure when the structure is subjected to earthquake response. These designs are generally encountered in older RC frames constructed prior to the introduction of the ductility aspect. The failure observed in the beam–column joints (BCJs) and accompanied by excessive column damage. This work examines the seismic performance and failure mode of non-ductile designed RC columns and exterior BCJs. The design was based on the actual building in Tainan City, Taiwan, that collapsed due to the 2016 Meinong earthquake. Hence, an experimental investigation using cyclic testing was performed on two columns and two BCJ specimens scaled down to 50%. The experiment resulted in a poor response in both specimens. Excessive cracks and their propagation due to the incursion of the lateral loads could be observed close to the top and bottom of the specimens. Joint shear failure appeared in the joints. The ductility of the member was below the desired value of 4. This is the minimum number required to survive an earthquake with a similar magnitude to that of El Centro. The evidence provides an understanding of the seismic failure of poorly detailed RC frame structures.
非延性钢筋混凝土细部框架抗震性能试验研究
当结构受到地震响应时,钢筋混凝土(RC)框架的非延性细节可能导致结构失效。这些设计通常在引入延性方面之前建造的旧RC框架中遇到。在梁柱节点(BCJ)中观察到的故障,并伴随着过度的柱损坏。本文研究了非延性设计RC柱和外部BCJ的抗震性能和破坏模式。该设计基于台湾台南市因2016年美浓地震而倒塌的实际建筑。因此,使用循环试验对两个柱和两个缩小到50%的BCJ试样进行了实验研究。实验导致两个样本的反应都很差。在试样顶部和底部附近可以观察到由于横向载荷的侵入而产生的过度裂纹及其扩展。节理出现剪切破坏。构件的延展性低于期望值4。这是在与El Centro类似震级的地震中幸存所需的最低人数。这些证据提供了对细节较差的RC框架结构的地震破坏的理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Earthquakes and Structures
Earthquakes and Structures ENGINEERING, CIVIL-ENGINEERING, GEOLOGICAL
CiteScore
2.90
自引率
20.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Earthquakes and Structures, An International Journal, focuses on the effects of earthquakes on civil engineering structures. The journal will serve as a powerful repository of technical information and will provide a highimpact publication platform for the global community of researchers in the traditional, as well as emerging, subdisciplines of the broader earthquake engineering field. Specifically, some of the major topics covered by the Journal include: .. characterization of strong ground motions, .. quantification of earthquake demand and structural capacity, .. design of earthquake resistant structures and foundations, .. experimental and computational methods, .. seismic regulations and building codes, .. seismic hazard assessment, .. seismic risk mitigation, .. site effects and soil-structure interaction, .. assessment, repair and strengthening of existing structures, including historic structures and monuments, and .. emerging technologies including passive control technologies, structural monitoring systems, and cyberinfrastructure tools for seismic data management, experimental applications, early warning and response
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