Experimental performance of steel beam-to-column connection under loading protocols with near-fault seismic effect

Ker Chun Lin, H. C. Chen, S. J. Zhuang, C. H. Chen

Research output: Contribution to journalConference articlepeer-review

Abstract

This study is to investigate seismic performance of steel beam-to-column moment connections for moment resisting frames (MRFs) considering a quasi-static loading protocol with near-fault Seismic effect. In this paper, a total of four full-scale beam-to-column connection specimens are conducted. Two kinds of beam-to-column moment connection are considered. This two include an enhanced beam section (EBS) connection with cover plates attaching on beam flanges and a reduced beam section (RBS) connection with arc cutting beam flanges those are two of the most popular beam-to-column connections in Taiwan steel structural practices. This paper adoptes three loading protocols that include one protocol with far-field earthquake effect specified in AISC 341-16 and two protocols with near-fault earthquale effects proposed by Krawinkler et al. [2000], and proposed by Lin et al. [2018] for the maximum considered earthquake (MCE) of Taiwan Seismic Code. Test results indicates that Specimens NMR and NMC are able to resist the loading protocol with Taiwan near-ault effect. In addition, there are two loading conditions of critical loading condition and degrade loading condition to be observed. If an RBS specimen experiences a loading protocol contained the critical loading condition, it may fracture before fully developing plastic moment and its total deformation angle range may be degraded. If an RBS specimen experiences a loading protocol contained the degraded loading condition, its total deformation angle range may be degraded. Moreover, Krawinkler near-fault loading protocol contains the critical loading condition and is a very severe loading protocol. Therefore, before using Krawinkler near-fault loading protocol, it should be identified whether the seismic level of building site is so high as that of Krawinkler near-fault loading protocol involved.

Original languageEnglish
JournalInternational Conference on Advances in Experimental Structural Engineering
Volume2020-February
StatePublished - 1 Jan 2020
Event8th International Conference on Advances in Experimental Structural Engineering, AESE 2020 - Christchurch, New Zealand
Duration: 3 Feb 20205 Feb 2020

Keywords

  • Beam-to-column connection
  • EBS-with-cover plate connection
  • Far-field earthquake
  • Loading history protocol
  • Near-fault earthquake
  • Reduced beam section (RBS) connection

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