Abstract
To promote the development of cross-laminated timber (CLT) structures, the Japanese Government Notifications on Structural Design of CLT Buildings (GN 611) was issued in 2016. In GN 611, three types of platform-framing CLT structures were classified in the simple calculation method of Route-1. Compared with a platform-framing structure, which has been clarified in GN 611, a balloon-framing structure is superior in shortening the construction period and reducing the number of CLT panels and metal connectors. To study the seismic properties of balloon-framing CLT structures and develop new structures for a CLT building, four full-scale, 3-story CLT structures were tested under quasi-static cyclic loading: Specimen 1 was a platform-framing structure with narrow wall panels; Specimen 2 was a balloon-framing structure with continuous wall panels; Specimen 3 a was platform-framing structure with wide wall panels; and Specimen 4 was a balloon-framing structure with continuous wall panels and glulam beams. In this study, experiments were conducted, and the seismic performance of the balloon- and platform-framing CLT structures were evaluated and compared. The test results indicated that the seismic properties of Specimens 1, 2, and 3 were similar and that the design method of Specimen 1, as specified in GN 611, was applicable for Specimens 2 and 3. Specimen 4 exhibited higher lateral load resistance than the other three specimens. The performance of Specimen 4 depended on the moment-resisting performance of the glulam beam and CLT wall joint. In this case, the moment-resisting performance obtained through the experiment was significantly higher than the predicted performance.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was supported by the National Institute for Land and Infrastructure Management of Japan (NILIM). The experiments were conducted at the Building Research Institute of Japan. The first author was supported by the China Scholarship Council (CSC). All contributions to this research are gratefully acknowledged.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 2 • February 2021
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© 2020 American Society of Civil Engineers.
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Received: Feb 29, 2020
Accepted: Aug 28, 2020
Published online: Nov 24, 2020
Published in print: Feb 1, 2021
Discussion open until: Apr 24, 2021
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