ディスク型シヤキーを用いた内付け補強架構の接合部破壊時の保有水平耐力の評価手法: 鋼製ディスクとアンカーボルトを併用した耐震補強用シャキーに関する研究

摘要

日本国内では，依然として古い耐震基準で設計された，耐震性能の低い建築物が多く使用されており，これらの建築物を大規模な地震から守るためには，耐震補強の普及が重要となる。地震時に補強設計で意図した性能を発揮させるには,補強部材(例えば,鉄骨ブレースや増設耐震壁)を既存躯体に剛に接合する必要がある。%We developed the new joint element called "disk shear-key" for seismic retrofitting. This joint element is consisted of steel disk and anchor bolt. We had tested to clear the basic structural performance by direct shear test. Retrofitting members are connected to existing frame through indirect-joints generally. In this paper, the joint loading test and the frame loading test are conducted to investigate structural performance of disk shear-key put in indirect-joints. As a result, it is found that the horizontal load-capacity of frame is estimated by adding shear strength of column, punching shear strength and shear strength of disk shear-key constructed by the joint loading test results.