楔に新たな機構を付与した伝統木造社寺建築の柱-貫仕口の提案

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タイトル別名
  • NUKI-TO-COLUMN JOINTS USING WEDGE CONTROLLED WITH SPRINGS FOR JAPANESE TRADITIONAL WOODEN FRAMES
  • セツ ニ アラタ ナ キコウ オ フヨ シタ デントウ モクゾウ シャジ ケンチク ノ ハシラ-カンシグチ ノ テイアン

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説明

<p> The authors’ previous studies on the structural characteristics of Nuki-to-column joints using wedges for Japanese traditional wooden frames showed that the problem with such joints is the extraction of wedges due to cyclic loading. This paper proposes a joint with a spring device to solve this problem. The proposed joint maintains the embedment characteristics of joints at all times and retains the advantages of conventional Nuki-to-column joints. The proposed joint is a Nuki-to-column joint with a spring device attached to the wedge of the traditional joint.</p><p> We show the superiority of the proposed joint through full-scale and element tests, and demonstrate the possibility of practical application.</p><p> Chapter 1 describes the significance of this study.</p><p> Chapter 2 outlines the problem with the traditional joint and describes the proposed joint.</p><p> Chapter 3 shows the structural characteristics of the proposed joint through full-scale tests and demonstrates the superiority of the joint.</p><p> Chapter 4 shows the results of element tests that were conducted to examine the proposed spring device in detail. Furthermore, a method for determining the hysteretic characteristics of the joint based on element tests is demonstrated.</p><p> Chapter 5 shows the superiority of the proposed joint using evaluations of energy absorption and time history response displacement.</p><p> The following conclusions were obtained in this study:</p><p> 1) Through full-scale and element tests, this study showed that the parameters for the proposed joint are wedge type, spring constant, tree species, and wedge angle.</p><p> 2) The bending moment, stiffness, and bilinear hysteresis for the proposed joint were compared with those for a conventional joint. A method for determining the hysteretic characteristics of the joint based on element tests was demonstrated.</p><p> 3) A hysteretic model for the proposed joint was proposed for time history response analysis based on a bilinear-slip model.</p><p> 4) The proposed joint showed higher energy absorption performance than that for a conventional joint. The time history response analysis showed that the maximum response for the proposed joint was less than half that for the conventional joint.</p>

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