1995年兵庫県南部地震における鉄筋のガス圧接継手の継手破断の被害原因に関する調査研究

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Many RC and SRC structural buildings were damaged at the 1995 Hyogoken Nanbu Earthquake. This paper is the research study on the cause of damages of gas-pressure welded joints of reinforcements that were used in those damaged RC and SRC structural buildings. The research study in this paper consists of two researches, Research 1 and Research 2. The Research 1 is a field work of a visual research on the joint failures of gas-pressure welded joints in the damaged RC and SRC structural buildings. The Research 2 is a static tension test research of the 365 gas-pressure welded joint test pieces that were picked up from the damaged RC and SRC structural buildings. From Reseach 1 and Research 2, we taked mainly the following conclusions. (1)The joint failures of gas-pressure welded joints were confirmed academically. (2)The joint failures of gas-pressure welded joints were caused by the poor execution of joint works. (3)The ratio of joint failures was 12.6% in the static tension test of the 365 gas-pressure welded test pieces.
1999-07-30