小幅パネルを対象にしたCLT構造の解析モデルの提案と精度検証

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タイトル別名
  • PROPOSAL OF ANALYSIS MODEL OF CLT STRUCTURE FOR SMALL WIDTH PANEL AND ACCURACY VERIFICATION INTENDED
  • コハバ パネル オ タイショウ ニ シタ CLT コウゾウ ノ カイセキ モデル ノ テイアン ト セイド ケンショウ

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説明

 In Japan, recently some research projects on CLT (Cross Laminated Timber) construction are conducted to establish the law on the design method of CLT buildings suited with the Japanese regulations of seismic design. However, at the present moment, building with CLT construction have to be structurally designed only under “Approval route” where seismic performance of objective building is verified through the time history response analysis to obtain the approval by the minister of MLIT (Ministry of Land, Infrastructure, Transport and Tourism), since the law concerned with practical structural design of CLT construction is not yet issued in Japan.<br> As part of the project in February 2015, to discuss the seismic performance to investigate the structural design method of building structures of CLT, and gave a vibration table tests in order to obtain the basic data. Compressive rupture at the corner of CLT wall panels occurred in shaking table test<br><br> Indication of the construction of the analysis model, tracking behavior when exceeding the test results, as aid in the proposed formula, the construction of the analysis model is useful. In this paper, we report the construction method and accuracy verification of the analysis model, and subject of the analysis model is 1.5 story of plane specimen.<br><br> In this study, directed to a structure that uses the CLT panel 1.0 to 2.0 meters wide in the wall, and use the tensile bolt and screw hitting hardware is at the junction<br> Using the FEM shell model for the construction of the structural model. It reason for using FEM shell model is capable of confirmation of the distribution of compressive stress in the shaking table in the cause in which the considered panel plane of the crushing of the panel leg seen in destructive nature of the test, also, the contact surfaces of the joint and the panels to each other by making substitutions are arranged on the spring element, because we consider an element comparison of the test results and the analysis results can be achieved.<br><br> In this model, CLT panel is an elastic shell elements, the junction is a non-linear spring element. Structural performance of CLT panels and joints were set based on the history of the experimental results. Based on the elements test results, set the properties of each element, you create a structure model of the 1.5-story plane test by the FEM shell model. To compare the analysis and test results of the structural model, we performed the accuracy verification of the structural model, to confirm the validity.

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