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パルス性地震動に対する伝統木造建物の地震挙動の解明と耐震診断法の構築

阐明传统木结构建筑响应脉冲地震的抗震性能并开发地震诊断方法

基本信息

批准号：
13J02580
负责人：
杉野未奈
金额：
$ 1.54万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2013
资助国家：
日本
起止时间：
2013-04-01 至 2015-03-31
项目状态：
已结题

项目摘要

本研究では、内陸地殻内地震の震源近傍で発生するパルス性地震動に対する伝統木造建物の地震時挙動を解明し、簡易かつ高精度な耐震診断法を構築することを目的とし、当該年度は下記の独創的な研究を行った。１、「単位軸組架構の動的変形特性評価式の一般化」：本研究では、伝統木造建物の構造要素である単位軸組架構について、固有振動数の振幅依存性を表す動的変形特性の一般化を目指して、架構の接合部、非構造部材の有無、壁材・木材の違い、軸組断面寸法などの仕様の違いが復元力特性や動的変形特性に及ぼす影響を分析した。分析においては、微小変形から最大変形角1/10rad以上で水平抵抗力を喪失するまで実施した単位軸組架構の静的水平加力実験結果と、単位軸組架構の振動台実験結果を用いた。分析結果より、架構の仕様によって復元力特性は大きく変化するが、単位軸組架構の1/1000rad以上での動的変形特性は仕様によらず概ね一つの回帰式で表現可能であることを示した。２、「伝統木造建物の簡易耐震性能評価法の構築」：本研究では、一般的な伝統木造建物の簡略的な耐震性能評価に適用する動的変形特性の評価式を、前述１および振動台実験の結果、既往の地震観測記録に基づいて構築した。まず、常時微動計測から得た固有振動数と、1/1000radでの等価固有振動数の低下率と、1/1000rad以上での単位軸組架構の静的加力実験の結果に基づいて伝統木造建物の動的変形特性の評価式を構築した。次に、伝統木造建物の耐震診断基準となる最大応答変形角を、常時微動計測結果と上記の動的変形特性を用いて簡略的に推定する方法を提示したのち、既往の実大木造建物の振動台実験結果を用いて精度検証を行うとともに、実在する京町家への適用事例を示した。

In this study, the earthquake source near the source of the earthquake in the interior and the earth, the earthquake motion near the earthquake, the dynamic explanation of the building of the building system during the earthquake, the high-precision earthquake resistance cut-off method, the purpose of the earthquake proof method, and the current research program for the next year. The main contents are as follows: 1. "the generalization of the shape characteristics of the structural behavior of the frame structure": in this study, the building elements of the building structure of the system wood, the structure of the frame, the number of natural vibrations, the amplitude-dependent behavior of the table, the generalization of the shape characteristics of the structure, the joints of the frame, the non-structural parts of the wood, the wall wood, the wall wood, The cross-sectional size method is used to analyze the shape characteristics and the effects of the force characteristics of the components. The results of horizontal stress test and vibration table test were analyzed when the maximum shape angle 1/10rad and the maximum shape angle of the micro-shaped frame were higher than 1/10rad. The results of the static horizontal loading test and the vibration table test results were analyzed. The results of the analysis show that the force characteristics of the components of the system, the structure of the system, and the shape characteristics of the activities above the 1/1000rad show that it is possible to show that it is possible. 2. "earthquake resistance performance test of structural wood building": in this study, the seismic performance test of the general system wood building building strategy is based on the shape characteristics of the vibration test, the results of the vibration table test of the above-mentioned 1-inch vibration platform, and the previous seismic records. The number of natural vibrations, such as the number of natural vibrations, the low rate of natural vibrations, and the static loading results of the structure above 1/1000rad, are obtained by measuring the number of natural vibrations, such as the number of natural vibrations, and so on. For secondary and structural wood structures, the maximum response angle is measured at the base level of earthquake resistance, and the shape characteristics of the previous vibration tests are prompted by the method of presumptive vibration, and the results of the previous vibration table tests of large wooden buildings are verified by the precision test, and the examples are used to show the performance of the vibration table in Beijing.