Development of near-fault loading protocols for first-story steel columns in dual systems with BRBs. (2nd January 2023)

• Record Type: Journal Article
• Authors: Liu, Yu-Fang; Chou, Chung-Che; Peng, GuanRu; Chen, Kuan-Ju
• Is Part Of: Journal of the Chinese Institute of Engineers. Volume 46:Number 1(2023)
• Page Start: 39
• Page End: 52
• Publication Date: 2023-01-02
• Subjects: Chen -- Ping-Hei; Chen -- Ping-Hei; Loading protocol -- near-fault earthquake -- buckling-restrained brace (BRB) -- nonlinear time-history analysis; Technology -- Periodicals; Engineering -- Periodicals; 620.005
• DOI: 10.1080/02533839.2022.2141343
• Languages: English
• ISSNs: 0253-3839

Abstract

ABSTRACT: The AISC 341–16 (2016) has loading protocols for beam-to-column moment connections and buckling-restrained braces, but it does not have a loading protocol for columns. Because a first-story column base is expected to form a plastic hinge in a building, a loading protocol for first-story columns in a dual system that comprises moment-resisting frames and buckling-restrained braced frames under varied axial force and lateral drift is required. Moreover, the symmetric cyclic loading protocols of AISC 341 do not include the effect of near-fault earthquakes, which is common in Taiwan. Therefore, the effect of near-fault earthquakes on first-story columns must be considered during the development of a loading protocol for dual systems. In the present study, four dual systems (representing 3-story, 7-story, 15-story, and 25-story frames) are subjected to 11 near-fault earthquake motions, used for developing near-fault loading protocols of first-story columns for the lateral drift and axial load responses.