PROPOSAL OF NEW FOUNDATION CONSTRUCTION WORKS WITH HIGH DAMPING AND MITIGATION PERFORMANCE; PART 2EARTHQUAKE OBSERVATION OF BLOCKS AND SEISMIC RESPONSE PREDICTION OF FULL-SCALED FOUNDATIONS
After the forced vibration tests, we have continued seismic observations at the experiment site (two types of foundation blocks, that is CF and IF, and their surrounding grounds) to confirm the effectiveness of the proposed foundation procedure during earthquakes. The CF was constructed by a conventional construction ethod and the IF applied the proposed improved foundation technique. Previously we have obtained many earthquake records, i.e., The Mid Niigata prefecture Earthquake in 2004, The Northwest Chiba prefecture Earthquake in 2005 and so forth. The Northwest Chiba prefecture Earthquake provided the largest acceleration observation record in the last ten years at the experiment site. The evaluation of the spectral intensity of the observation records indicated that the proposed foundation technique would effectively reduce the severe damage of earthquake destructivity. However, the efficient results by the seismic response were not shown in comparison with forced vibration tests because the size of the foundation block was too small. Therefore, the seismic response analysis of a full-scaled structure that installs the damping material into trenches dug along the foundation was carried out, and the effectiveness of the proposed damping material on seismic response mitigation of the structure was demonstrated.
Damping performance damping mixtures foundation blocks earthquake observation seismic response prediction
Y.Shimomura Y.Ikeda M.Kawamura N.Sako S.Ishimaru
Professor,Dept.of Construction,Nihon University Junior College,Japan Manager,Taisei Corporation,Japan Professor,College of Industrial Technology,Nihon University,Japan Assistant Professor,Dept.of Construction,Nihon University Junior College,Japan Professor,College of Science and Technology,Nihon University,Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）