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Study on Seismic Behavior of Concrete Structures by using Dynamic Visualization Technique

混凝土结构抗震性能的动态可视化技术研究

基本信息

批准号：
06452263
负责人：
IKEDA Shoji
金额：
$ 4.86万
依托单位：
Yokohama National University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452263/
关键词：
Reinforced Concrete Seismic Pseudo-dynamic Dynamic Visualization Earthquake Response 耐震挙動動的映像

项目摘要

The dynamic visualization technique was invented and developed by the authors in which nonlinear dynamic deformation of a specimen was visualized in the video screen by playing back the tape of the independent infinitesimal shots of video recording taken in the pseudo-dynamic computer controlled test.In this study, improvement the quality of dynamic pictures was performed by means of utilizing newly purchased video camera and related instruments. Seismic response of reinforced concrete column specimens in the various reinforcement condition was obtained by the experiment using above mentioned technique, and rational reinforcement design method was obtained for the seismic safety and serviceability. Two-story reinforced concrete rigid frame specimen was also tested and dynamic mechanism in the seismic failure of this type of the structures was clearly expressed and was recorded in the video tape. The successful result of this study was quits useful to investigate the failure mechanism of the structures in the Great Hanshin Earthquake of 1995.In this study, the dynamic pictures in the screen consist of 33 independent frames each of which has been recorded for 0.03 seconds duration according to the record of the earthquake time series. Therefore, smooth and natural dynamic movement can be observed in the monitor screen and these dynamic pictures were considered to be almost perfect.The authors have made valuable video tapes which can show the various dynamic behavior of reinforced concrete specimens under severe earthquakes designed differently. These video will be quite useful for the improvement of the seismic design and the seismic strengthening of the reinforced concrete structures.

动态可视化技术是作者发明和开发的一种动态可视化技术，它通过回放计算机控制的准动态测试中拍摄的独立的微视频镜头的磁带，在视频屏幕上显示试件的非线性动态变形。本研究利用新购买的摄像机和相关仪器来提高动态图像的质量。通过试验，得到了不同配筋条件下钢筋混凝土柱试件的地震反应，得出了合理的配筋设计方法，保证了结构的抗震安全性和使用性能。对两层钢筋混凝土刚架试件进行了试验，清楚地表达了该类型结构在地震破坏中的动力机理，并记录在录像带中。这一研究的成功结果对研究1995年阪神大地震中结构的破坏机理是有用的。在本研究中，屏幕上的动态画面由33个独立的框架组成，每个框架都根据地震时间序列的记录记录了0.03秒的持续时间。因此，在监视器屏幕上可以观察到平稳自然的动态运动，这些动态画面被认为是近乎完美的。作者制作了有价值的录像带，可以展示不同设计的钢筋混凝土试件在严重地震下的各种动态行为。这些视频将对改进钢筋混凝土结构的抗震设计和抗震加固有很大的帮助。