High performance composite structures with combination of expansive concrete and fiber reinforcements

膨胀混凝土和纤维增强材料相结合的高性能复合材料结构

• 批准号: 17360202
• 负责人: TSUJI Yukikazu
• 金额: $ 8.13万
• 依托单位: Gunma University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360202/
• 关键词: Chemical prestress; High performance concrete; Composite steel structure; Flexural Behavior; Chemical prestrain; Expansive concrete; Fiber reinforcements; Expansive strain; 土木材料; 構造・機能材料

In this study, in order to experimentally investigate the flexural behaviors of high performance composite structures, trial combinations of high strength expansive concrete and fiber reinforcements were carried out. Fiber reinforcements consist of short fibers and continuous fiber reinforcements. A depth of reinforced concrete member is limited to 10 cm. Target compressive strength of expansive concrete is larger than 80N/mm^2. High strength expansive concrete can be applied to composite steel structures for the purpose of not only to protect steel corrosion but also to introduce chemical prestress effectively by using higher expansive energy of the expansive concrete.High performance composite structures can be attained by the prominent combination of steel members and high strength fiber reinforced expansive concrete. From the research results, a design method of high performance composite structures is proposed and following items are gained.1)High strength expansive concrete with … More short carbon fibers or short vinyl fibers can be manufactured. Compressive strength of the expansive concrete is larger than 80N/mm^2.after selecting appropriate combinations of not only mix design of concrete but also quantity of high performance expansive additive and content of short fibers.2)Chemical prestrains are lineally distributed across the height of composite steel girders if bond strength between a concrete slab and a steel girder is strong more than enough. However linear distributions of chemical prestrain could not be gained for the height direction if the poor bond strength is existed around a edge of the girder. The phenomena can be seen easily for the higher composite steel girders.3)Though longitudinal chemical prestrains at the upper position of the steel girder are strongly affected, chemical prestrains are a little larger at the position far from the steel girder due to weaker restraint by the steel girder.4)Higher flexural behaviors of the composite steel girder can be attained if the bond strength between concrete and steel girder were strong enough. Therefore the effect of chemically prestressed concrete depends on the soundness and degree of the bond strength.5)Radial directional work-done by the expansive concrete is almost the same as that of uni-axial A method restraint even if the thickness of inner steel pipe and of outer steel pipe are varied about five times. Less

为了对高性能组合结构的抗弯性能进行试验研究，进行了高强膨胀混凝土和纤维增强复合材料的试验研究。纤维增强材料由短纤维和连续纤维组成。钢筋混凝土构件的深度限制为10厘米。膨胀混凝土的目标抗压强度大于80N/mm2。高强膨胀混凝土应用于组合钢结构，不仅可以防止钢筋锈蚀，而且可以利用膨胀混凝土较高的膨胀能有效地引入化学预应力。钢构件和高强纤维膨胀混凝土的突出结合可以获得高性能的组合结构。根据研究结果，提出了高性能组合结构的设计方法，取得了以下成果：1)掺…的高强膨胀混凝土可以制造更多的短碳纤维或短乙烯基纤维。在选择合适的混凝土配合比设计、高性能膨胀剂掺量和短纤维掺量的组合后，膨胀混凝土的抗压强度大于80N/mm~2。2)如果混凝土板与钢梁之间的粘结强度足够大，则化学预应变沿组合钢梁的高度呈线性分布。然而，如果梁的边缘粘结强度较差，则不能得到化学预应变在高度方向的线性分布。对于高度较高的组合钢梁，这种现象比较明显。3)虽然钢梁上部的纵向化学预应变受影响较大，但由于钢梁的约束较弱，在远离钢梁的位置化学预应变较大。4)如果混凝土与钢梁之间的粘结强度足够大，则组合钢梁的受弯性能较好。因此，化学预应力混凝土的效果取决于粘结强度的坚固性和粘结强度的大小。5)内、外钢管厚度变化约5倍时，膨胀混凝土的径向作业量与单轴A法约束的作业量基本相同。较少

项目成果

Internal Damage of Reinforced Concrete and Chemically Pre-stressed Concrete under Uniaxial Load

单轴荷载作用下钢筋混凝土和化学预应力混凝土的内部损伤

• 发表时间: 2005
• 期刊: Proc.of the Fourth International Symposium on New Technologies for Urban Safety of Mega Cities in Asia
• 作者: Y.Yamakoshi;M.Koganezawa;Y.Yamakoshi;山越芳樹;萩原淳弘;玉置一清;Atsuhiro Hagiwara;Kazukiyo Tamaoki;萩原 淳弘;粉川 心介;野田 一路;Aloke Rajbhandary;石松信哉;Zhihai LIN;Shinya ISHIMATSU;萩原淳弘;保利彰宏;保利彰宏;佐久間隆司;李春鶴;佐久間隆司;Aloke Rajbhandary;Shinya Ishimatu;Zhihai LIN;Shinya ISHIMATSU;Atsuhiro Hagiwara;Akihiro Hori;Akihiro Hori;Takashi Sakuma;Chun-He Li;Takashi Sakuma;保利 彰宏;Bimal Babu Adhikary;石松 信哉;萩原 淳弘;辻 幸和;Rajbhandary A.;Raktipong SAHAMITMONGKOL;Raktipong SAHAMITMONGKOL
• 通讯作者: Raktipong SAHAMITMONGKOL

膨張コンクリートに関する既往の研究と今後の課題

膨胀混凝土的过去的研究和未来的问题

• 发表时间: 2006
• 期刊: コンクリートテクノ Vol.25, No.11
• 作者: Y.Yamakoshi;M.Koganezawa;Y.Yamakoshi;山越芳樹;萩原淳弘;玉置一清;Atsuhiro Hagiwara;Kazukiyo Tamaoki;萩原 淳弘;粉川 心介;野田 一路;Aloke Rajbhandary;石松信哉;Zhihai LIN;Shinya ISHIMATSU;萩原淳弘;保利彰宏;保利彰宏;佐久間隆司;李春鶴;佐久間隆司
• 通讯作者: 佐久間隆司

スパイラル筋による軸直交方向拘束を与えたケミカルプレストレス部材のTension Stiffening効果

垂直于轴线方向螺旋钢筋约束化学预应力构件的拉伸刚化效应

• 发表时间: 2006
• 期刊: コンクリート工学年次論文集 Vo1.28, No.2
• 作者: Y.Yamakoshi;M.Koganezawa;Y.Yamakoshi;山越芳樹;萩原淳弘;玉置一清;Atsuhiro Hagiwara;Kazukiyo Tamaoki;萩原 淳弘;粉川 心介;野田 一路;Aloke Rajbhandary;石松信哉
• 通讯作者: 石松信哉

膨張コンクリートの内的拘束膨張ひずみと組織構造

膨胀混凝土内约束膨胀应变与微观结构

• 发表时间: 2006
• 期刊: Cement Science and Concrete Technology No.60
• 作者: Y.Yamakoshi;M.Koganezawa;Y.Yamakoshi;山越芳樹;萩原淳弘;玉置一清;Atsuhiro Hagiwara;Kazukiyo Tamaoki;萩原 淳弘;粉川 心介;野田 一路;Aloke Rajbhandary;石松信哉;Zhihai LIN;Shinya ISHIMATSU;萩原淳弘;保利彰宏;保利彰宏;佐久間隆司
• 通讯作者: 佐久間隆司

再生骨材と膨張材を用いたRCはりの曲げおよびせん断性状

使用再生骨料和膨胀材料的 RC 梁的弯曲和剪切性能

• 发表时间: 2006
• 期刊: Cement Science and Concrete Technology No.60
• 作者: Y.Yamakoshi;M.Koganezawa;Y.Yamakoshi;山越芳樹;萩原淳弘;玉置一清;Atsuhiro Hagiwara;Kazukiyo Tamaoki;萩原 淳弘;粉川 心介;野田 一路;Aloke Rajbhandary;石松信哉;Zhihai LIN;Shinya ISHIMATSU;萩原淳弘;保利彰宏;保利彰宏;佐久間隆司;李春鶴
• 通讯作者: 李春鶴