Dynamic Characteristics and Failure Mechanisms of Spacial Structures

空间结构动力特性及破坏机理

• 批准号: 60460171
• 负责人: HANGAI Yasuhiko
• 金额: $ 4.61万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60460171/
• 关键词: Space-Frame; Spatial Structure; Single-Layer Dome; Seismic Response; Shaking Table Test; Response Analysis; Dynamic Characteristics; 上下動振動

The importance of considering the dynamic treatments of spacial structures at the time of design has been pointed out from the various points of view, based on, for example, the numerical results of large seismic responses for a spherical shell due to vertical earthquake motions.The purpose of the present study is to investigate the dynamic behaviours of reticulated single-layer shallow domes by means of the free vibration tests and the shaking table tests by a newly developed model using "spring" for each member. The results are compared with the another model with the similar configuration and dimension.The model, which is a reticulated single-layer shallow dome with triangular unit, is composed of 132 members connecting at 61 joints, and the base dismeter (a) of this model is 2.8 m. The rise (h) and the rise-to-span ratio (h/a) are 37.5 cm and 0.134, respectively. The stiffness of the member depends on the axial stiffness of the spring, and the members are pin-connected at their joints.The following items are mainly studied:(1) Free vibration tests,(2) Shaking table tests for up-down motion, and(3) Comparison of the results with similar model and numerical analyses.

本文从不同的角度指出了在设计时考虑空间结构动力处理的重要性，本文研究了单层球面网壳在竖向地震作用下的动力特性，给出了单层球面网壳在竖向地震作用下的大地震反应的数值计算结果。本文通过自由振动试验和新研制的各杆件采用“弹簧”的模型振动台试验，对单层扁穹顶结构进行了动力分析。将计算结果与另一个结构尺寸相似的模型进行了比较，该模型为三角形单元的单层扁网壳，由132根杆件组成，节点数为61个，基底直径（a）为2.8m。矢高h为37.5cm，矢跨比h/a为0.134。主要研究内容包括：（1）自由振动试验;（2）上下运动振动台试验;（3）与相似模型和数值分析结果的比较。

项目成果

Tanami, T. and Hangai, Y.: "Shaking Table Tests for the Dynamic Behaviours of Reticulated Single-Layer Dome by Use of a Spring Model" International Colloqium on Space Structures for Sports Buildings, Beljium, China, October, 1987.

Tanami, T. 和 Hangai, Y.：“使用弹簧模型对网状单层穹顶动态行为进行振动台测试”国际体育建筑空间结构学术研讨会，中国贝尔吉姆，1987 年 10 月。

Tanami, T. and Hangai, Y.: "Dynamic Experiments and Earthquake Observation of Reticulated Single-Layer Domes" International Symposium on Practical Aspects in the Computation of Shell and Spatial Structures, leuven, Belgium, July, 1986.

Tanami, T. 和 Hangai, Y.：“网状单层穹顶的动态实验和地震观测”壳和空间结构计算实用方面国际研讨会，比利时鲁汶，1986 年 7 月。

Tanami,T.;Hangai,Y.: International Colloqium on Space Structures for Sports Buildings,Beljium,China,October,1987.

Tanami,T.；Hangai,Y.：体育建筑空间结构国际研讨会，中国贝尔吉姆，1987 年 10 月。

Tanami,T.;Hangai,Y.: International Symposium on Practical Aspects in the Computation of Shell and Spatial Structures,Leuven,Belgium,July.

Tanami,T.；Hangai,Y.：壳和空间结构计算实用方面国际研讨会，比利时鲁汶，7 月。