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Study on Measurements of Creep and Shrinkage of Composite Structures, Construction of Database as well as Their Applications

复合结构蠕变收缩测量、数据库建设及应用研究

基本信息

批准号：
05555130
负责人：
NAKAI Hiroshi
金额：
$ 1.92万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555130/
关键词：
Composite Structures Creep and Shrikage Database Analysis of Creep Stress Analysis of Shrinkage Stress 汎用プログラムの開発汎用プログラム開発

项目摘要

A total of 5 meetings were held in 1993 through 1994, in which study works concerning the present research was steadily carried out. The following lines summarize their contents :Firstly, an experiment on creep and shrinkage was carried out on 6 specimens of concrete filled rectangular pipes, being almost completed after its almost one year's measurements. A rheological method for numerical analysis was developed and the prediction curves were completed to apply to the practical date. In addition, an opportunity of executing an experiment on creep of the slabs (either precast or cast in-situ)of composite girders due to the shrinkage of the slab, made it possible to include these results in the present research.Next, using Paradox 4.0J,a software acquired for the purposes of the present research, the following 2 date base concerning creep and shrinkage of composite structures were constructed. The first one, focusing on the measured date of the already registered references, was constructed so that abstracts, results and keywords of the papers, author names and affiliation, can be easily accessed through a personal computer. The other, included the results of the present research, for the creep coefficients and amount of shrinkage of elements of composite structures, and in a similar way, allowed to accessed them through a personal computer. In order to help in the actual design, the graphic date base presents comparisons with the various design specifications.In addition, as applicationn to the above results, analysis of stress and deformation due to creep and shrinkage of composite girders with extemal cables were carried out, based on a new theoretical formulation. After a number of analysis, its suitability from various points of view were discussed.

1993年至1994年共召开了5次会议，稳步开展了与本研究有关的研究工作。首先，对6个矩形钢管混凝土试件进行了徐变收缩试验，经过近一年的测试，试验基本完成。建立了流变学数值分析方法，完成了预测曲线，并将其应用于实际数据。此外，由于板的收缩，对组合梁板（预制或现场浇筑）的徐变进行了实验，使得将这些结果纳入本研究成为可能。接下来，使用Paradox 4.0J，为本研究目的而获得的软件，构建了以下2个有关组合结构徐变和收缩的数据库。第一个网站的重点是已登记参考文献的计量日期，其设计目的是使论文的摘要、结果和关键词、作者姓名和所属单位可以通过个人计算机方便地查阅。另一个，包括本研究的结果，复合结构的元件的徐变系数和收缩量，并以类似的方式，允许通过个人计算机访问它们。为了便于实际设计，图形数据库提供了与各种设计规范的比较，此外，作为上述结果的应用，根据新的理论公式，对体外索组合梁的徐变和收缩引起的应力和变形进行了分析。经过多次分析，从多个角度对其适用性进行了探讨。