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Research on Dynamic Characteristic of Five Story Pagodas

五层塔动力特性研究

基本信息

批准号：
16560521
负责人：
KAWAI Naohito
金额：
$ 1.98万
依托单位：
Building Research Institute (2005-2006)Independent Administrative Institution National Institutes for Cultural Heritage Tokyo National Research Institute for Cultural Properties (2004)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

To obtain the basic data of dynamic characteristics of five story pagodas, we executed micro tremor measurement and human power excitation tests on three pagodas, which were built in middle or pre-modern age. As the results, the values of natural period based on the micro tremor measurement were, 1.20 (sec.), 0.41 (sec.) and 0.23 (sec.) for primary, secondary and third degree mode respectively for main structure, and 0.19 (sec.) for center column of Nakayama-Hokekyo-ji Temple, 1.15 (sec.), 0.41 (sec.) and 0.23 (sec.) for main structure, and 0.73 (sec.) and 0.38 (sec.) for center column of Itsukushima Shrine, and 1.32 (sec.), 0.50 (sec.) and 0.25 (sec.) for main structure, and 0.85 (sec.) and 0.38 (sec.) for center column of Myojo-ji Temple. The values of damping factor derived from the natural vibration after the human power excitation were, 1.56% and 2.10% for NS and EW direction respectively of Nakayama-Hokekyo-ji Temple, 2.76% and 3.97% for Itsukushima Shrine, and 2.15% and 1.40% fo … More r Myojo-ji Temple.Next, using the data from above mentioned measurements and preceding researches, we investigated the relationship between natural period and height, and the values of damping factor for 21 pagodas. By a least squares method, the relationship between the natural period y (sec.) and the height x (m) was y=0.0391x in case the total height was used, and y=0.0528x in case the height of the main structure was used. And the values of damping factor for these pagodas were from 1.4% to 5.3%.Finally, modeling of vibration models considering both shear and flexural deformation was proposed for five story pagodas. The valuables in the model were fixed by system identification using primary to third degree natural periods and vibration modes of Myojo-ji Temple as the target. As the results, it revealed that this model can represent well the natural periods and vibration modes of the pagoda. And next, one earthquake response calculation was tried using this model with the modification that the hysteresis curves of shear springs were assumed to be combination of bi-linear and slip. The result was that this pagoda does not collapse even against the strong ground motion record, JMA Kobe-NS. Less

为获得五层塔动力特性的基础数据，对三座建于中、近代的五层塔进行了脉动测试和人力激励试验。结果，基于微动测量的固有周期的值为1.20（秒），0.41（秒）和0.23（秒）主结构主、次、三阶振型分别为0.19（sec.）中山北京寺中柱，1.15秒，0.41（秒）和0.23（秒）主结构为0.73（秒）和0.38（秒）严岛神社的中心柱，和1.32（秒），0.50（秒）和0.25（秒）主结构，0.85（秒）和0.38（秒）明上寺的中心柱。由人力激励后的自振阻尼因子值，中山北京寺南北向和东西向分别为1.56%和2.10%，严岛神社南北向和东西向分别为2.76%和3.97%，严岛神社南北向和东西向分别为2.15%和1.40%。 ...更多信息然后，利用上述测量数据和前人的研究成果，对21座塔的自然周期与塔高的关系以及塔的阻尼因子值进行了研究。通过最小二乘法，得到了自振周期y（sec.）在使用总高度的情况下，高度x（m）为y=0.0391x，在使用主结构高度的情况下，高度x（m）为y=0.0528x。最后，建立了考虑剪切变形和弯曲变形的五层塔的振动模型。以妙上寺的一阶至三阶固有周期和振型为对象，通过系统辨识确定模型中的有用值。结果表明，该模型能较好地反映宝塔的自振周期和振型。然后，将剪切弹簧的滞回曲线假定为双线性和滑移的组合，利用该模型进行了一个地震反应计算。结果是，这座宝塔即使在强烈的地面运动记录JMA Kobe-NS下也没有倒塌。少

项目成果

期刊论文数量（22）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

SEISMIC PERFORMANCE OF JAPANESE WOODEN PAGODAS

日本木塔的抗震性能

DOI：
发表时间：
2004
期刊：
Proceedings of the 8^<th> World Conference on Timber Engineering : Lahti, Finland Vol.III
影响因子：
0
作者：
Akito UCHIDA;Chikahiro MINOWA;Naohito KAWAI;Hideyuki MAEKAWA;Toshikazu HANAZATO
通讯作者：
Toshikazu HANAZATO

Dynamic Characteristic of Traditional Wooden Buildings Part 14 : Vibration Test on Nakayama Hokekyo-ji Pagoda

传统木结构建筑的动力特性第14部分：中山法华寺塔的振动测试

DOI：
发表时间：
2006
期刊：
Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan C-1
影响因子：
0
作者：
H.Maekawa;N.Kawai;T.Hanazato;C.Minowa;S.Matsudome;S.Michiba
通讯作者：
S.Michiba

Dynamic Characteristic of Traditional Wooden Buildings Part 15 : Vibration Test on Itsukushima Shrine Pagoda

传统木结构建筑的动力特性第15部分：严岛神社宝塔的振动测试

DOI：
发表时间：
2007
期刊：
Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan C-1(in press)
影响因子：
0
作者：
H.Maekawa;N.Kawai;T.Hanazato;C.Minowa;S.Matsudome;S.Michiba
通讯作者：
S.Michiba

Dynamic Characteristic of Japanese Pre-modern Five-storied Pagodas

日本前现代五层塔的动力特性