2011 Fiscal Year Final Research Report

Study on Sensitive and Simple Seismic Diagnosis for Wooden Houses Built before 1981

Research Project

Project/Area Number	21560605
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Building structures/materials
Research Institution	Toyota National College of Technology
Principal Investigator	IMAOKA Katsuya 豊田工業高等専門学校, 建築学科, 教授 (20193667)
Project Period (FY)	2009 – 2011
Keywords	耐震診断 / 木造住宅 / 固有振動数 / ねじれ振動
Research Abstract	In order to evaluate the seismic performance of 2-storied wooden houses which were built before 1981, sensitive and simple seismic diagnosis using horizontal vibration generator have been carried out to over 100 houses in Toyota city or Nagoya area. From the investigation, the natural frequency of the house becomes higher when the weight of the roof is lighter and the seismic capacity grade ratio is bigger in case of full 2-storied type. When the house has enough measurement space at the second floor, the torsional amplitude ratio from the vibration test properly corresponds to the eccentricity of the house in case of span direction.

(5 results)