Effects of Hoop in Steel and R/C Composite

钢和 R/C 复合材料中环箍的影响

• 批准号: 60550390
• 负责人: TAKIGUCHI Katsuki
• 金额: $ 1.41万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 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/grant/KAKENHI-PROJECT-60550390/
• 关键词: Steel and R; C Composite; Hoop Reinforcement; Buckling; Concrete under Compression

The main conclusions of this study are as follows; (a) The proposed SRC system, 'steel' - 'concrete' - 'hoop reinforcement' composite has quite good aseismic performance. (b) Flexural cracks concentrated at the critical sections in the proposed SRC members subjected to bending-shear cracks, and flexural-shear cracks were not observed. (c) Hoop reinforcement improved the compressive behaviour of the concrete and protected the steel from local buckling. (d) Hoop reinforcement contributed to the ductility of members under various loading conditions. (e) Deformation of the SRC member under compression is due not only to compressive strain but also to slip along the inclined crack, and affected by the existance of the H-shaped steel itself. The relation between compressive force and deformation of SRC cannot be evaluated as the sum of those of concrete and steel. (f) The maximun moment carried at the critical sections of members under bending-shear were greater than those under bending. Compressive stress - strain relationship of concrete in the members under bending-shear should be affected by the restraint of thr neighbouring solid concrete.

本研究的主要结论如下：(1)提出的型钢混凝土‘钢’-‘混凝土’-‘箍筋’组合体系具有较好的抗震性能。(B)在受弯剪裂缝作用的型钢混凝土构件中，弯曲裂缝主要集中在临界截面，没有观察到弯剪裂缝。(C)箍筋改善了混凝土的抗压性能，并防止钢筋局部屈曲。(D)在各种荷载条件下，箍筋有助于提高构件的延性。(E)型钢混凝土受压构件的变形不仅与压应变有关，还与沿斜裂缝的滑移有关，并受H型钢本身存在的影响。型钢混凝土的压应力与变形的关系不能用混凝土和钢材的压力和变形之和来评价。(F)弯剪作用下构件临界截面处的最大弯矩大于弯曲作用下的最大弯矩。弯剪构件中混凝土的压应力-应变关系应受到相邻实体混凝土约束的影响。

项目成果

鈴木敏郎,滝口克己,他: 日本建築学会構造系論文報告集. No.354. 40-51 (1985)

Toshiro Suzuki、Katsumi Takiguchi 等人：日本建筑研究所结构研究论文集，第 354. 40-51 号（1985 年）。

T.SUZUKI, K.TAKIGUCHI, et al: "Development and Design Recommendations for Composite Structure" The First East Asian Conference on Structural Engineering and Construction. 2. 1076-1087 (1986)

T.SUZUKI、K.TAKIGUCHI 等人：“复合结构的开发和设计建议”第一届东亚结构工程与施工会议。

鈴木敏郎,滝口克己,他: Proc.The First East Asian Conference on Structural Engineering and Construction. Vol.2. 1076-1087 (1986)

Toshiro Suzuki、Katsumi Takiguchi 等人：第一届东亚结构工程与施工会议，第 2 卷（1986 年）。

T.SUZUKI , K.TAKIGUCHI , et al: "Experimental Study on the Ultimate Strength of SRC Column-Steel Beam Connections" Transactions of Architectural Institute of Japan. No.354. 40-51 (1985)

T.SUZUKI，K.TAKIGUCHI，等：“SRC柱-钢梁连接极限强度的实验研究”日本建筑学会学报。

鈴木敏郎,滝口克己,他: 第7回日本地震工学シンポジウム講演集. 1387-1392 (1986)

Toshiro Suzuki、Katsumi Takiguchi 等：第七届日本地震工程研讨会论文集 1387-1392（1986）。