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

为了研究高性能复合材料结构的抗弯性能，本文对高强膨胀混凝土与纤维增强材料进行了试验组合。纤维增强材料分为短纤维增强材料和连续纤维增强材料。钢筋混凝土构件的深度限制为10 cm。膨胀混凝土的目标抗压强度大于80 N/mm^2。高强纤维膨胀混凝土应用于组合钢结构中，不仅可以起到保护钢筋锈蚀的作用，而且可以利用膨胀混凝土的膨胀能有效地引入化学预应力，通过钢构件与高强纤维膨胀混凝土的突出结合，实现高性能组合结构。在此基础上，提出了一种高性能组合结构的设计方法，并取得了以下成果：1）高强膨胀混凝土 ...更多信息 可以制造短碳纤维或短乙烯基纤维。通过对混凝土配合比设计、高性能膨胀剂掺量和短纤维掺量的合理选择，可使膨胀混凝土的抗压强度达到80 N/mm^2以上。2）在混凝土板与钢梁的粘结强度足够大的情况下，化学预应变沿组合钢梁高度方向呈线性分布。然而，如果梁的边缘存在较差的粘结强度，则不能获得高度方向上的化学预应变的线性分布。3）虽然钢梁上部的纵向化学预应变对钢梁的影响很大，由于钢梁的约束作用较弱，化学预应变在远离钢梁处稍大当混凝土与钢梁之间的粘结强度足够大时，组合钢梁可以获得较高的抗弯性能。因此，化学预应力混凝土的效果取决于粘结强度的合理性和程度。5）膨胀混凝土的径向功与单轴A法约束的径向功几乎相同，即使内、外钢管的厚度相差5倍左右。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