@article{oai:tokyo-metro-u.repo.nii.ac.jp:00005878, author = {Che, Ailan and Iwatate, Takahiro and Yoshimine, Mitsutoshi and Oda, Yoshiya and Yu, M.H. and 車, 愛蘭 and 岩楯, 敞広 and 吉嶺, 充俊 and 小田, 義也 and 兪, 茂宏}, journal = {総合都市研究}, month = {}, note = {東京都立大学大学院工学研究科土木工学専攻(担当: 岩楯敞広教授、吉嶺充俊助教授)と西安交通大学建築工程与力学学院土木工程系(担当: 兪茂宏教授、劉奉銀講師)とは、「中国西部地域の地震応答特性に関する総合研究」を共同研究として、①西安交通大学およびその周辺の地盤および古建築物の地震時の応答特性、②黄土の力学的特性に関する土質試験を、鋭意実施中である。本研究は、西安市内の6つの古建築物(西安城壁西門-城楼・箭楼、西安城壁東門一城楼・箭楼、鐘楼、鼓楼)を対象に常時微動観測を実施するとともに西安交通大学構内西区広場における物理探査試験を実施し、古建築物の地震応答特性と地盤構造ついて検討したもので、歴史的価値を有する古建築物の保存や今後の都市防災のための基礎資料を得ることを目的としている。, In order to clarify the seismic characteristics of the surface ground and the ancient buildings of Xi'an city,the seismic exploration test,the microtremor observations and the seismic response analyses of the surface ground and the structures were performed. The main results are shown as follows. 1.The surface ground of Xi'an city was formed from Loss soil and the shear velocity of the surface ground was 233m/s from the exploration tests. The predominant frequencies of the surface ground can not obtained from the microtremor measurements. It can be considered that the condition of the surface is very hard and has not a sharp contrast to its substratum. 2. The natural frequencies of the ancient buildings (the west gate of Xi'an ancient city wall (Chenglou and Jianlou),the east gate of Xi'an ancient city wall (Chenglou and Jianlou),the Gulou (GR) and Zhonglou) of Xi'an city were obtained from the microtremor measurements. Furthermore,the amplifications between the base and top floor of each building were obtained from the microtremor measurements. From the results,it can be concluded that amplifications are depended on the form and the basis of the buildings. 3.The results obtained from microtremor observations were agreed well with the calculated results from the 1-D and 2-D dynamic analyses. Moreover,the distributions of stress in the foundation of the ancient building (GR),due to the Hyogoken-Nanbu earthquake,were clarified. This study will be useful for the seismological micro zoning and planning seismic disaster mitigation in Xi'an area., postprint}, pages = {73--92}, title = {中国西部地域の地震応答特性に関する総合研究 : 西安地域の古建築物の動的応答特性その2}, volume = {82}, year = {2003} }