Development of Computer Simulator for Rigid Blocks under Earthquake Excitations

地震激励下刚性块体计算机模拟器的研制

• 批准号: 06558053
• 负责人: YAMAZAKI Fumio
• 金额: $ 5.44万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06558053/
• 关键词: Earthquake; Interior Object; Overturning; Distinct Element Method; Simulation; Shaking Table Test

Shaking table tests were conducted to investigate the response of rectangular wooden blocks and block assemblies of various sizes and slenderness to harmonic and earthquake base excitation. The shaking table tests were followed by analytical and numerical studies in order to estabish criteria for the initiation of rocking and overturning of rigid blocks. The Distinct Element Method (DEM) was employed as a tool of numerical simulation. From the comparison study with the results of the experiments and analytical solutions, DEM was found to have good accuracy for this problem.The DEM was further utilized to establish overturning criteria of rigid blocks. For a set natural earthquake, motions, numerical studies were conducted and a relationship of overturning was proposed as a function of size, slenderness ratio, peak input acceleration and peak input velocity.This relationship may be conveniently used in seismic risk estimation of interior objects subjected to strong earthquake motion.

进行了摇桌测试，以研究各种尺寸和细长的矩形木质块和对谐波和地震底座激发的响应。摇桌测试之后进行了分析和数值研究，以遵循刚开始和翻转刚性块的标准。不同的元素方法（DEM）被用作数值模拟的工具。从与实验和分析溶液的结果的比较研究中，发现DEM对于此问题具有良好的准确性。DEM进一步用于建立刚性块的推翻标准。为了进行自然地震，进行了数值研究，并提出了推翻的关系，这是根据大小，细长比率，峰值输入加速度和峰值输入速度的函数的函数。在内部的地震风险估计中，可以方便地使用这种关系。

项目成果

T.Winkler, K.Meguro and F.Yamazaki: "Response of Interior Objects to Earthquakes" Proceedings of the 50th Annual Conference of Japan Society of Civil Engineers. I-B. 1172-1173 (1995)

T.Winkler、K.Meguro 和 F.Yamazaki：“内部物体对地震的响应”日本土木工程师学会第 50 届年会论文集。

T.Winkler: "Response of Rigid Body Assemblies to Dynamic Excitation" Earthquake Engineering and Structural Dynamics. 24. 1389-1408 (1995)

T.Winkler：“刚体组件对动态激励的响应”地震工程和结构动力学。

T.Winkler: "Response of Rigid Body Assemblies to Dynamic Excitation" 第9回日本地震工学シンポジウム論文集. 3. 139-144 (1994)

T. Winkler：“刚体组件对动态激励的响应”第九届日本地震工程研讨会论文集 3. 139-144 (1994)。

T.Winkler: "Overturning of Rigid Bodies under Dynamic Excitation" Proc.of 5th U.S.National Conference on Earthquake Engineering. 2. 859-868 (1994)

T.Winkler：“动态激励下的刚体翻转”第五届美国全国地震工程会议论文集。

T.Winkler, K.Meguro and F.Yamazaki: "Response of Interior Objects to Earthquake" Proceedings of the 23th Japan Society of Civil Engineers Earthquake Engineering Symposium. 553-556 (1995)

T.Winkler、K.Meguro 和 F.Yamazaki：“内部物体对地震的响应”第 23 届日本土木工程师学会地震工程学研讨会论文集。