オクタプラッテの応力解析と実験

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In this report, the natures of "Okta-platte", a kind of spaced frames, are analyzed theoretically and experimentally. First, the outlines of two methods for theoretical stress analysis are informed, and then experimental stress analysis by load tests on the model of "Okta-platte" is reported. (1) Theoretical stress analysis The stresses of "Okta-platte" under load are able to be analyzed in plate analogy. There are two methods for analysis. One of these is the analysis of "Okta-platte" as a solid plate. According to this method, the stresses in the members of "Okta-platte" are easily calculated, for the stress distribution of a solid plate is already known. The otner is the analysis as a grid framework. As "Okta-platte" is composed of the repetition of unit truss, whic has the same members, the same differential equation as that of a plate is obtained. If this equation can be solved, the stresses in the members are calculated. There are some coincidences between the results of calculations by two methods. (2) Experimental analysis Intending to know the stress distribution of "Okta-platte" under load experimentally, the load tests on the model of it where carried out. The model was composed of steel pipe members, which were jointed each other by welding. Under various boundary conditions, the stress distribution and the vertical deflection were recorded by the help of wire strain gage and other meters. Comparing the results of tests with those of theoretical analyses, it is consequently shown that: (a) The stress distribution and the deflection of "Okta-platte" are similar to those of a solid plate. (b) The tow methods of calculations of the stresses in the members are useful for designing "Okta-platte". (c) The deflection of "Okta-platte" is rather equal to the result of analysis by means of the latter than by the former method.
社団法人日本建築学会の論文
1962-06-30

オクタプラッテの応力解析と実験

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