Development of A New Prestressed Composite Slabs by Using Bottom Skin Plate as Prestressing Tendon

以底皮板为预应力筋的新型预应力复合板的研制

• 批准号: 05555129
• 负责人: OHTA Toshiaki
• 金额: $ 4.86万
• 依托单位: KYUSHU 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 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555129/
• 关键词: Composite Slab; Prestressed Concrete; Creep; Joint; Drying Shrinkage; Effective Prestress; スラブ

This study, firstly, presents an outline of two-way tensioning equipment for steel plate and bars designed by the authors. Then, it discribes the result of two-way prestressing test for composite slabs, comparing with the numerical result by the finite element analysis based on incomplete interaction between steel and concrete. Finally, the creep behavior of the two-way prestressed composite slab are made clear by the creep test as well as numerical analysis on basis of the Trost's creep equation.The results obtained are : as follows :(a) By the proposed new prestressing technique, the effective prestress can be introduced in concrete by almost 150 to 175kgf/cm^2 (15 to 17MPa) in longitudinal direction and 50kgf/cm^2 (4.9MPa) in transverce direction, respectively.(b) FEM analysis assumed the incomplete interaction between steel plate and concrete can be evaluated for the introduced prestress in such a composite slab.(c) Trost's method can estimate practically the creep behavior of two-way prestressed composite slab on assumption of independent creep behavior in each direction by Fukr.

本文首先介绍了作者设计的钢板和钢筋双向张拉设备的概况。然后介绍了组合板双向预应力试验结果，并与基于钢-混凝土不完全相互作用的有限元分析结果进行了比较。最后，通过徐变试验和基于Trost徐变方程的数值分析，对双向预应力叠合板的徐变特性进行了研究，结果表明：（1）采用新的预应力技术，混凝土中纵向有效预应力可达150 ~ 175 kgf/cm ~ 2（15 ~ 17 MPa），横向有效预应力可达50 kgf/cm ~ 2（4.9MPa）; (b)有限元分析假设钢板与混凝土之间的不完全相互作用，可以评估这种组合板中引入的预应力。(c)Trost法在假设双向预应力叠合板各向徐变独立的前提下，可以对双向预应力叠合板的徐变性能进行实用的估算。

项目成果

T.Ohta,S.Hino,N.Shinnishi and N.Kohno: "A New Prestressing Technique for Steel Plate-concrete Composite Slabs" Proc.of the 4th ASCCS Int.Conf.No.4. 283-286 (1994)

T.Ohta、S.Hino、N.Shinnishi 和 N.Kohno：“钢板-混凝土组合板预应力新技术”，第四届 ASCCS Int.Conf.No.4 论文集。

太田俊昭、日野伸一、新西成男、河野伸征、金敬鎮: "プレストレスト合成版製作用の鋼板・鋼棒2方向緊張装置の開発" 九州大学工学集報. 67巻6号. 651-657 (1994)

Toshiaki Ota、Shinichi Hino、Shigeo Shinnishi、Nobuyuki Kono、Kyungjin Kim：“用于生产预应力复合板的钢板和钢筋双向张紧装置的开发”九州大学工程通报第 67 卷第 6 期。 651-657（1994）

T.Ohta, S.Hino, N.Shinnishi and N.Kohno: "A New Prestressing Technique for Steel Plate-Concrete Composite Slabs" Proc.of the 4th ASCCS Int.Conf.No.4. 283-286 (1994)

T.Ohta、S.Hino、N.Shinnishi 和 N.Kohno：“钢板-混凝土复合板预应力新技术”Proc.of the 4th ASCCS Int.Conf.No.4。

T.Ohta, S.Hino, N.Shinnishi N.Kohno and K.Kim: "Development of Two-way Tensioning Machine for Steel Plate and Bars to Produce a Composite Slab" Technology Reports of Kyushu Univ.Vol.67, No.3. 651-657 (1994)

T.Ohta、S.Hino、N.Shinnishi N.Kohno 和 K.Kim：“用于钢板和棒材生产复合板坯的双向张紧机的开发”九州大学技术报告第 67 卷第 1 期

太田俊昭: "鋼板・コンクリート合成版の2方向プレストレス化に伴う導入プレストレスとクリープ特性の解明" 第3合成構造の活用に関するシンポジウム講演論文集. 37-42 (1995)

Toshiaki Ota：“与钢板/混凝土复合板双向预应力相关的引入预应力和蠕变特性的阐明”复合结构利用研讨会论文集 3. 37-42 (1995)