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    蘇州混凝土水泥制品研究院有限公司

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    發布時間:2020-01-06 00:00:00
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    RPC本構關系及矩形RPC梁抗彎承載力研究
    RPC Constitutive Relation and Ultimate Flexural Capacity of Rectangular RPC Beams
    2020年第10期
    活性粉末混凝土(RPC);鋼纖維;梁;力學性能;本構關系
    Reactive powder concrete; Steel fibre; Beam; Mechanical property; Constitutive relationship
    2020年第10期
    10.19761/j.1000-4637.2020.10.055.06
    國家自然科學基金項目(51608028)。
    龍佩恒,黃琳藝,喬 宏,宋 浩,李 飛
    北京建筑大學 土木與交通工程學院,北京100044

    龍佩恒,黃琳藝,喬 宏,宋 浩,李 飛

    摘 ? 要:設計了3組不同配比活性粉末混凝土(RPC)試件,研究了鋼纖維對RPC試件力學性能的影響,分析了RPC抗壓本構關系,并提出了新的RPC抗拉本構方程。在此基礎上設計了矩形梁抗彎承載力試驗,研究了鋼纖維對RPC梁的延性、韌性、承載力和抗裂性能的影響。結果表明:摻鋼纖維RPC梁的開裂荷載、屈服荷載及極限承載力較未摻鋼纖維RPC梁均提升了20%以上,構件的裂縫寬度能夠控制在0.1 mm以內。

    Abstract: 3 groups of reactive powder concrete(RPC) specimens with different mix proportions were designed, the influence of steel fiber on the mechanical properties of RPC specimens was studied, the compressive constitutive relationship of RPC was analyzed, and a new RPC tensile constitutive equation was put forward. On this basis, a rectangular beam flexural bearing capacity test was designed, and the influence of steel fiber on the ductility, toughness, bearing capacity and anti-cracking performance of RPC beams was studied. The results show that the crack load、 yield load and ultimate flexural capacity of RPC beams with steel fiber are increased by more than 20% compared with RPC beams without steel fiber, and the crack width of the members can be controlled to less than 0.1 mm.

    龍佩恒,黃琳藝,喬宏,等.RPC本構關系及矩形RPC梁抗彎承載力研究[J].混凝土與水泥制品,2020(10):55-60.

    LONG P H,HUANG L Y,QIAO H,et al.RPC Constitutive Relation and Ultimate Flexural Capacity of Rectangular RPC Beams[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):55-60.

    瀏覽量:
    1000
    摘 ? 要:設計了3組不同配比活性粉末混凝土(RPC)試件,研究了鋼纖維對RPC試件力學性能的影響,分析了RPC抗壓本構關系,并提出了新的RPC抗拉本構方程。在此基礎上設計了矩形梁抗彎承載力試驗,研究了鋼纖維對RPC梁的延性、韌性、承載力和抗裂性能的影響。結果表明:摻鋼纖維RPC梁的開裂荷載、屈服荷載及極限承載力較未摻鋼纖維RPC梁均提升了20%以上,構件的裂縫寬度能夠控制在0.1 mm以內。 Abstract: 3 groups of reactive powder concrete(RPC) specimens with different mix proportions were designed, the influence of steel fiber on the mechanical properties of RPC specimens was studied, the compressive constitutive relationship of RPC was analyzed, and a new RPC tensile constitutive equation was put forward. On this basis, a rectangular beam flexural bearing capacity test was designed, and the influence of steel fiber on the ductility, toughness, bearing capacity and anti-cracking performance of RPC beams was studied. The results show that the crack load、 yield load and ultimate flexural capacity of RPC beams with steel fiber are increased by more than 20% compared with RPC beams without steel fiber, and the crack width of the members can be controlled to less than 0.1 mm.
    英文名 : RPC Constitutive Relation and Ultimate Flexural Capacity of Rectangular RPC Beams
    刊期 : 2020年第10期
    關鍵詞 : 活性粉末混凝土(RPC);鋼纖維;梁;力學性能;本構關系
    Key words : Reactive powder concrete; Steel fibre; Beam; Mechanical property; Constitutive relationship
    刊期 : 2020年第10期
    DOI : 10.19761/j.1000-4637.2020.10.055.06
    文章編號 :
    基金項目 : 國家自然科學基金項目(51608028)。
    作者 : 龍佩恒,黃琳藝,喬 宏,宋 浩,李 飛
    單位 : 北京建筑大學 土木與交通工程學院,北京100044

    龍佩恒,黃琳藝,喬 宏,宋 浩,李 飛

    摘 ? 要:設計了3組不同配比活性粉末混凝土(RPC)試件,研究了鋼纖維對RPC試件力學性能的影響,分析了RPC抗壓本構關系,并提出了新的RPC抗拉本構方程。在此基礎上設計了矩形梁抗彎承載力試驗,研究了鋼纖維對RPC梁的延性、韌性、承載力和抗裂性能的影響。結果表明:摻鋼纖維RPC梁的開裂荷載、屈服荷載及極限承載力較未摻鋼纖維RPC梁均提升了20%以上,構件的裂縫寬度能夠控制在0.1 mm以內。

    Abstract: 3 groups of reactive powder concrete(RPC) specimens with different mix proportions were designed, the influence of steel fiber on the mechanical properties of RPC specimens was studied, the compressive constitutive relationship of RPC was analyzed, and a new RPC tensile constitutive equation was put forward. On this basis, a rectangular beam flexural bearing capacity test was designed, and the influence of steel fiber on the ductility, toughness, bearing capacity and anti-cracking performance of RPC beams was studied. The results show that the crack load、 yield load and ultimate flexural capacity of RPC beams with steel fiber are increased by more than 20% compared with RPC beams without steel fiber, and the crack width of the members can be controlled to less than 0.1 mm.

    龍佩恒,黃琳藝,喬宏,等.RPC本構關系及矩形RPC梁抗彎承載力研究[J].混凝土與水泥制品,2020(10):55-60.

    LONG P H,HUANG L Y,QIAO H,et al.RPC Constitutive Relation and Ultimate Flexural Capacity of Rectangular RPC Beams[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):55-60.

    摘要
    參數
    結論
    參考文獻
    引用本文

    摘   要:設計了3組不同配比活性粉末混凝土(RPC)試件,研究了鋼纖維對RPC試件力學性能的影響,分析了RPC抗壓本構關系,并提出了新的RPC抗拉本構方程。在此基礎上設計了矩形梁抗彎承載力試驗,研究了鋼纖維對RPC梁的延性、韌性、承載力和抗裂性能的影響。結果表明:摻鋼纖維RPC梁的開裂荷載、屈服荷載及極限承載力較未摻鋼纖維RPC梁均提升了20%以上,構件的裂縫寬度能夠控制在0.1 mm以內。

    Abstract: 3 groups of reactive powder concrete(RPC) specimens with different mix proportions were designed, the influence of steel fiber on the mechanical properties of RPC specimens was studied, the compressive constitutive relationship of RPC was analyzed, and a new RPC tensile constitutive equation was put forward. On this basis, a rectangular beam flexural bearing capacity test was designed, and the influence of steel fiber on the ductility, toughness, bearing capacity and anti-cracking performance of RPC beams was studied. The results show that the crack load、 yield load and ultimate flexural capacity of RPC beams with steel fiber are increased by more than 20% compared with RPC beams without steel fiber, and the crack width of the members can be controlled to less than 0.1 mm.

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    (1)通過試驗驗證了RPC抗壓本構關系,并基于試驗數據擬合提出了RPC抗拉本構關系公式。
    (2)摻入鋼纖維能提高RPC的延性和韌性,僅摻入1.5%的鋼纖維能使RPC試件的抗折強度提升兩倍左右。
    (3)摻入鋼纖維能抑制RPC梁的裂縫擴展,大部分裂縫寬度能夠控制在0.1 mm以內。
    (4)相比于未摻鋼纖維的RPC矩形梁,摻入鋼纖維的RPC矩形梁的開裂荷載、屈服荷載、極限荷載均提升20%以上。
    (5)RPC在摻入鋼纖維后表現出比較優異的力學性能,有望作為承重構件在工程中使用。

    [1] WANG C,YANG C H,LIU F,et al.Preparation of Ultra-High Performance Concrete with common technology and materials[J]. Cement and Concrete Composites,2012,34(4):538-544.
    [2] 王月,安明喆,余自若,等.活性粉末混凝土力學性能研究現狀[J].混凝土,2013(12):21-26.
    [3] 余自若,閻貴平,張明波.活性粉末混凝土的彎曲強度和變形特性[J].北京交通大學學報,2006(1):40-43.
    [4] CHADLI M,MEKKI M,MEZGHICHE B.Formulation and study of metal fiber-reinforced reactive powder concrete[J].World Journal of Engineering,2018,15:531-539.
    [5] 馬亞峰.活性粉末混凝土(RPC200)單軸受壓本構關系研究[D].北京:北京交通大學,2006.
    [6] 郝文秀,徐曉.鋼纖維活性粉末混凝土力學性能試驗研究[J].建筑技術,2012,43(1):35-37.
    [7] 郭曉宇,亢景付,朱勁松.超高性能混凝土單軸受壓本構關系[J].東南大學學報(自然科學版),2017,47(2):369-376.
    [8] 管品武,涂雅箏,張普,等.超高性能混凝土單軸拉壓本構關系研究[J].復合材料學報,2019,36(5):1295-1305.
    [9] 呂雪源,王英,符程俊,等.活性粉末混凝土基本力學性能指標取值[J].哈爾濱工業大學學報,2014,46(10):1-9.
    [10] 原海燕,安明喆,賈方方,等.鋼纖維增強RPC受拉應力-應變曲線試驗[J].廣西大學學報(自然科學版),2015,40(4):921-927.
    [11] GOAIZ H A,YU T,HADI M N S.Quality Evaluation Tests for Tensile Strength of Reactive Powder Concrete[J].American Society of Civil Engineers,2018,30(5):0002257.
    [12] 耿春雷,許零,陳紅巖,等.活性粉末混凝土的研究與工程應用進展[J].材料導報,2012,26(5):70-73.
    [13] 周文元.活性粉末混凝土在道路橋梁工程中的應用[J].水運工程,2004(12):103-105.
    [14] 鄭文忠,李莉.活性粉末混凝土配制及其配合比計算方法[J].湖南大學學報(自然科學版),2009,36(2):13-17.

    龍佩恒,黃琳藝,喬宏,等.RPC本構關系及矩形RPC梁抗彎承載力研究[J].混凝土與水泥制品,2020(10):55-60.

    LONG P H,HUANG L Y,QIAO H,et al.RPC Constitutive Relation and Ultimate Flexural Capacity of Rectangular RPC Beams[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):55-60.

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