断層近傍強震動下における免震動建物の応答・損傷特性と損傷制御

断层附近强地震动作用下隔震建筑响应/损伤特征及损伤控制

• 批准号: 04F04100
• 负责人: 中島 正愛
• 金额: $ 0.77万
• 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: 2004
• 资助国家: 日本
• 起止时间: 2004 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04F04100/
• 关键词: 免震建物; 強震動; 衝突; 擁壁; 等価線形化法; 耐震設計

大地震下における機能保持と過大地震下における安全性確保を命題として、免震建物の応答を、過大地震下での擁壁との衝突とそれに伴う上部構造の損傷、免震層の剛性・減衰が上部構造加速度応答に及ぼす影響、耐震設計に供しうる免震建物最大変形予測法という視点にたって考察した。主たる知見は下記の通りである。(1)擁壁部がもつ復元力特性を、RC壁とその背後にある土との連成系として弾塑性有限要素法解析から明らかにした。擁壁の耐力特性は特に擁壁高さに依存すること、RC壁自体よりも背後土による抵抗が相対的に大きいことを示したうえで、擁壁部の初期剛性と降伏耐力の範囲を明示した。(2)衝突を伴う免震建物地震応答解析を実施し、入力レベル、上部構造特性、衝突回数、上部構造損傷の相関を検討した。衝突を起こす可能性が高い断層近傍強震動はその継続時間が短いので、衝突回数はせいぜい2〜3回程度に留まることが多く、またその損傷は上部構造の下部に集中する傾向があることを明らかにした。(3)上部構造の基本特性と免震層の剛性と減衰特性が与えられた一般的な免震建物に作用する、免震層最大水平変位と上部構造最大加速度を、応答スペクトルから予測する方法を新たに提案し、その妥当性を一連の数値解析との照合から検証した。等価線形化法に立脚する方法であるが、免震建物がもつ長い固有周期特性を踏まえ、減衰の違いによる応答低減係数の調節、擬似加速度と絶対加速度との相違の調節等によって高い精度を確保している。

In case of a large earthquake, the earthquake proof machine can maintain the safety and safety of the structure under a large earthquake to ensure the safety of the building, the response of the earthquake-proof building, the abrupt failure of the wall under a large earthquake, the upper part of the shock-proof fatigue failure, the response of the upper part of the shock-proof structure and the vibration shadow, the maximum shape of the earthquake-proof building can be measured by the method. The Lord knows that I have no idea that I am sorry to hear you. The main results are as follows: (1) the mechanical properties of the wall, the back of the RC wall, the soil connection system, the plastic finite element method and the plastic finite element method. The wall endurance characteristic, the wall height, the dependence, the RC wall, the back soil, the resistance, the wall, the wall, the wall height, the wall height and the wall height. (2) the analysis of the earthquake of abrupt and shock-free buildings should include the construction characteristics of the upper part, the number of outburst, the phase of the upper part, and the structure of the upper part. The probability of outburst is high, the probability of outburst is high, the time of earthquake response is short, the number of outburst is 2 and 3 times, and the upper part of the building is concentrated in the upper part of the building. (3) the basic characteristics of the upper part, such as the basic characteristics of shock-proof, the characteristic of sexual attenuation, the action of shock-free buildings, the maximum horizontal position of shock-proof, the maximum acceleration of the upper part, the new proposal and appropriateness of the method, the analysis of the number of the analysis of the maximum acceleration of the maximum horizontal position of the shock-proof structure. The equal line shaping method, the standing foot method, the long-term inherent periodic characteristics of earthquake-proof buildings, the long-term inherent periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, the natural periodic characteristics of earthquake-proof buildings, and so on