Analysis of seidmic properties of CLT shear walls

• Project/Area Number: 26450227
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Wood science
• Research Institution: Shizuoka University
• Principal Investigator: Yasumura Motoi 静岡大学, 農学部, 教授 (40143408)
• Co-Investigator(Kenkyū-buntansha): 小林 研治 静岡大学, 農学部, 准教授 (90576240)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: CLTパネル / FEM解析 / 耐力壁 / 時刻歴地震応答解析 / 開口部 / 平均応力法 / 亀裂 / 大版パネル / 亀裂発生 / CLT耐力壁 / 破壊性状 / 有限要素法 / せん断耐力 / 地震応答解析 / CLT構造 / 有開口耐力壁 / 信頼性解析 / ネジ接合

Outline of Final Research Achievements

This study aims to develop the mechanical model for CLT shear walls and provide useful data for the design of CLT structures. Finite Element model and dynamic model were developed for CLT shear walls and the influence of mechanical properties of joints on the seismic performance of building structures composed of CLT panels. The safety of CLT structure on the various seismic ground motions were studied by performing the time history earthquake response analysis. The failure mechanism of CLT shear walls due to the splitting of CLT at the corner of opening was also analysed by applying the average stress method in FEM analysis and it was shown that this method is appropriate to predict the crack initiation at the corner of opening. These results provide useful date for the design of large panel CLT with opening.

Research Products

• [Journal Article] Seismic performance of CLT low-rise structures with small and large wall elements with opening (2016)
  • Author(s): Motoi Yasumura, Kenji Kobayashi, Minoru Okabe
  • Journal Title: INTER Proceedings Volume: １ Pages: 219-229
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Full-Scale Tests and Numerical Analysis of Low-Rise CLT Structures under Lateral Loading (2015)
  • Author(s): Motoi Yasumura; Kenji Kobayashi; Minoru Okabe; Tatsuya Miyake4; and Kazuyuki Matsumoto
  • Journal Title: J. Struct. Eng. Volume: On-line first Issue: 4 Pages: 1-12
  • DOI: 10.1061/(asce)st.1943-541x.0001348
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Racking resistance and ductility of CLT shear walls under horizontal and vertical loads (2014)
  • Author(s): 安村 基、伊藤宜正
  • Journal Title: Proceedings of 2014 WCTE Volume: 1 Pages: 1-8
• [Journal Article] Shear properties of timber-to-timber joints with large size self-tapping screws (2014)
  • Author(s): 小林研治、安村基
  • Journal Title: Proceedings of 2014 WCTE Volume: 1 Pages: 1-8
• [Journal Article] Cross Laminated Timber made of regional wood from Shizuoka area Part 1: Project outlines and mechanical properties of CLT (2014)
  • Author(s): 小林研治、安村基
  • Journal Title: Proceeding of 2014 INTER Volume: 1 Pages: 363-365
• [Journal Article] Cross Laminated Timber made of regional wood from Shizuoka area Part 2: Seismic performance of CLT structures (2014)
  • Author(s): 安村 基、小林研治
  • Journal Title: Proceeding of 2014 INTER Volume: １ Pages: 367-369
• [Presentation] Failure analysis of CLT shear walls with opening subjected to horizontal and vertical loads (2016)
  • Author(s): Motoi Yasumura, Kenji Kobayashi, Minoru Okabe
  • Organizer: World Conference on Timber Engineering
  • Place of Presentation: ウィーン、オーストリア
  • Year and Date: 2016-08-22
  • Int'l Joint Research
• [Presentation] FAILURE ANALYSIS OF CLT SHEAR WALLS WITH OPENING SUBJECTED TO HORIZONTAL AND VERTICAL LOADS (2016)
  • Author(s): Motoi Yasumura, Kenji Kobayashi, Minoru Okabe
  • Organizer: 2016 WCTE
  • Place of Presentation: Vienna (Austria)
  • Year and Date: 2016-08-22
  • Int'l Joint Research
• [Presentation] Seismic performance of CLT low-rise structures with small and large wall elements with opening (2016)
  • Author(s): Motoi Yasumura, Kenji Kobayashi, Minoru Okabe
  • Organizer: 2016 INTER
  • Place of Presentation: Graz (Austria)
  • Year and Date: 2016-08-16
  • Int'l Joint Research