2) N0654321012354689)m0)m000s/m( htpeD( htpeDoitaR edutilpmA7Frequency (Hz)3002001000( .-100cc-200A50100Time (s)C～O：5F/1F TR(NS) LN(EW)10 Left RightBending Moment (kNm)150200250300-2-4-6-8-10-12My=120kNm-14-16-10-18-124080120-2-4-6-8My=117kNm4080120 Left (12m) Right (6m)Bending Moment (kNm)Seismic Performance Evaluation of Existing Wooden StructuresStatic Test of a Wooden StructureWooden House Cluster Model for Seismic Damage Prediction71Yamagata University Graduate School of Science and Engineering E-mail ：shiomitsu@yz.yamagata-u.ac.jpResearch InterestTel ：+81-23-628-4352Wooden StructureFax：+81-23-628-4352E-mail ・ shiomitsu@yz.yamagata-u.ac.jpTel ・ +81-23-628-4352Fax ・ +81-23-628-4352HP ：http://shiomitsu.site/HP・http://shiomitsu.site/Content：ContentWe conducted damage investigation of many pile-foundation We conducted damage investigation of many pile-buildings after the 2011 Tohoku earthquake. One of the important foundation buildings after the 2011 Tohoku earthquake. One research topics of my laboratory is to understand dynamic behavior of the important research topics of my laboratory is to of a pile-foundation building with complicated ground conditions understand dynamic behavior of a pile-foundation building like irregular pile supporting stratum, soft soil characteristics, and so with complicated ground conditions like irregular pile supporting stratum, soft soil characteristics, and so on. on. Based on the results of microtremormeasurements, earthquake Based on the results of microtremor measurements, observations, and numerical simulations, we attempt to understand earthquake observations, and numerical simulations, we dynamic behavior of a pile-foundation building and contribute to attempt to understand dynamic behavior of a pile-foundation refine the design technique of a pile-foundation building from the building and contribute to refine the design technique of a pile-foundation building from the theoretical point of view.theoretical point of view. We are also tackling with the study on vibration We are also tackling with the study on vibration characteristics of characteristics of “Yamagata Basin” which has complicated “Yamagata Basin” which has complicated ground structure. In the ground structure. In the western part of Yamagata Basin, western part of Yamagata Basin, soft soil layers are accumulated in soft soil layers are accumulated in subsurface layers and subsurface layers and the engineering bedrock is supposed to be the engineering bedrock is supposed to be inclined. We try to find the vibration characteristics of Yamagata Basin by inclined. We try to find the vibration characteristics of Yamagata microtremor measurements. I’d like to mention that the effect Basin by microtremormeasurements. I’d like to mention that the of heavy snow load to the vibration characteristics of a effect of heavy snow load to the vibration characteristics of a building is also studied by long term monitoring.building is also studied by long term monitoring.Appealing point：Dynamics in geotechnical engineering and wooden Special objectivesstructures are acceptable. Dynamics in geotechnical engineering and wooden structures are acceptable.Yamagata UniversityGraduate School of Science and Engineering Research Interest ：Geotechnical engineeringYamagata University Graduate School of Science and Engineering Earthquake Engineering, Structural EngineeringE-mail ：mitu@e.yamagata-u.ac.jpResearch InterestGeotechnical engineering Earthquake Engineering, Tel ：+81-23-628-4326Structural EngineeringFax：+81-23-628-4326E-mail ・ mitu@e.yamagata-u.ac.jpTel ・ +81-23-628-4326Fax ・ +81-23-628-4326Content：ContentLarge earthquakes occur frequently in Japan. Therefore, evaluating Large earthquakes occur frequently in Japan. Therefore, the seismic performance of wooden structures is important to evaluating the seismic performance of wooden structures is decrease the people who die due to earthquakes.important to decrease the people who die due to earthquakes.Experiment is necessary to evaluate seismic performance. I have conducted shaking table tests and static tests of a wooden structure. I Experiment is necessary to evaluate seismic performance. verified the relationship between the ground motions and damage to I have conducted shaking table tests and static tests of a building with the shaking table tests using different input ground wooden structure. I verified the relationship between the motions. I developed the analysis model that can reproduce seismic ground motions and damage to building with the shaking behavior with the test result. Now, I'm developing a damage cluster table tests using different input ground motions. I developed model of existing wooden structures. We can conduct earthquake the analysis model that can reproduce seismic behavior with damage prediction and earthquake damage estimation using the the test result. Now, I'm developing a damage cluster model damage cluster model.of existing wooden structures. We can conduct earthquake damage prediction and earthquake damage estimation using Appealing point：the damage cluster model.I will actively engage in industry-academia collaboration and Special objectivescontribute to improving the seismic performance of existing wooden structures. I will actively engage in industry-academia collaboration and contribute to improving the seismic performance of existing wooden structures.Yamagata UniversityGraduate School of Science and Engineering Research Interest ：Wooden StructureNumerical simulation of a pile-foundation building heavily damaged by the 2011 Tohoku earthquakeDamage of str. towerNumerical model of FEMAmplitude ration of 5F/1F of the damaged buildingSensorsSchematic sectionSeismic response of pilesStr. TowerCorridor TowerPile length:8 to17mFillBuilding APile length: 6 to 8mCutSeismic Performance Evaluation of Existing Wooden StructuresAssistant Professor Masashi SHIOMITSUAssistant Professor Masashi ShiomitsuDynamic behavior of a Pile-foundation building and its seismic designProfessor Kazuya Mitsuji Professor Kazuya MitsujiDynamic behavior of a Pile-foundation building and its seismic designShaking Table Test of a Wooden StructureAnalysis Model That Can Reproduce Seismic Behavior
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