改修過程の伝統的木造建築物における微振動性状変化のモニタリングによる構造特性評価に関する研究

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(1)ŸÃȱĆȾƓȑŃɈ Vol. 6ɖ2012Č7Ŕɗ. ȑŃ. B .eT,YRGd=VN>@1?P73 $!%(JdO?`-fSU Evaluation of Structural Properties on Traditional Wooden Structures underwent Disassembly and Reconstruction based on Observation of Fluctuation of Micro-tremors ƉºǬŷ1`Éoƅb2 Hidemasa Kaihara and Yoichi Mukai 1ĐƱ. ƱÔłȰ0"7ÿȱĆľǎȏɖ650-8567 ĐƱƻĩĆiä³eāĬȧ5-10-1ɗ Hyogo Prefectural Government, Urban Policy Division. 2ƻĩâìŀĳ. âìɁăìƷǅƾɖ657-8501 ĐƱƻĩĆƒ³ƤÂƦ1-1ɗ. Associare Professor, Kobe University, Dept. of Architecture. Microtremor measurements are carried out to identify the dynamic characteristic of the traditional Japanese wooden structure. Observations are operated over multiple times including the unfinished states during dismantlement and reconstruction of the target structure. Observed results from four times measurements are evaluated by spectrum analyses and the modal shapes and the natural frequencies of the target structure are identified. Eigen value analyses are also conducted to numerically investigate for those observed results, the modal shapes and the natural frequencies which are numerically evaluated are compared with practical results. Keywords : traditional wooden structure, micro-tremor measurement, system identification, FFT analysis. hg< ȣČŃ°ȗēǐƗ*Ľăm;ñŇ8Ʌ(3ůȩȐţ(Û"ǣɉȋ;Ǵ %%3(Ĉōĝ® ȇƍ(58Ĳ®Ƙġ*ȋ:#ñŇ98mÜÊȀ698*5 'ēǐƗ*Ľō(Ʌ# +*Ń°ƭ;ë8ȄƔ 6ú6Ĥ²(ù8ȐţȳȂ9#ůȩƭ'ɋ(3Ȳ Ħ'985 ('8%(+Ń°ȗēǐƗ;Ɠô 6Ȕ8% ĤÌ 63ȳǿ'ĤǠ;İ! |Ǚƭŗȩēǐ(

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