An experimental study on seismic performance and failure mode at the end of RC beams with non-structural wall having structural gaps

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420572
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Yokohama National University
• Principal Investigator: TASAI AKIRA 横浜国立大学, 都市イノベーション研究院, 教授 (40155057)
• Co-Investigator(Kenkyū-buntansha): KUSUNOKI KOICHI 東京大学, 地震研究所, 准教授 (00292748)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 構造スリット / 梁 / 塑性率 / 等価粘性減衰 / 端部せん断補強筋 / せん断破壊 / スラブ / トラスアーチ理論

Outline of Final Research Achievements

Static loading tests were conducted to investigate seismic behavior of beams with non-structural walls having structural gap.One beam, whose spacing between stirrups in hinge regions was decreased, and three beams with slab and their walls are as spandrel or hanging wall. were tested. For four beams, spacing between stirrups was decreased and with slabs, were able to finish the tests without shear failure. As the test results, the beam with non-structural wall having structural gaps had the possibility of shear failure occurred, even in the beam having more than 1.1 of shear margin. Moreover, it was found that it was possible to prevent shear failure by increasing the end reinforcement and effect of the slab restraint.

Free Research Field

建築構造学　鉄筋コンクリート構造