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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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    BFRP筋/鋼筋混合配筋混凝土梁抗彎試驗與有限元分析
    Flexural Test and Finite Element Analysis of BFRP Bars/steel Hybrid Reinforced Concrete Beams
    2020年第10期
    混合配筋混凝土梁;BFRP筋;抗彎性能試驗;有限元分析
    Hybrid reinforcement concrete beam; BFRP bar; Flexural test; Finite element analysis
    2020年第10期
    10.19761/j.1000-4637.2020.10.045.06
    國家自然科學基金項目(51704029);遼寧省興遼英才青年拔尖項目(XLYC1807050)。
    付 瑩1,孔祥清2,于 洋2,高紅軍3
    1.渤海大學 工學院,遼寧 錦州 121001;2.遼寧工業大學 土木建筑工程學院,遼寧 錦州 121001; 3.錦州集信高溫材料有限公司,遼寧 錦州 121001

    付 瑩1,孔祥清2,于 洋2,高紅軍3

    摘 ? 要:通過抗彎性能試驗,分析了玄武巖纖維增強筋(BFRP筋)/鋼筋混合配筋混凝土梁的承載力、破壞形態、撓度及裂縫發展情況。在試驗基礎上利用ANSYS軟件建立了BFRP筋/鋼筋混合配筋混凝土梁的三維有限元數值分析模型,并與試驗結果進行了對比。在數值分析模型基礎上研究了FRP筋類型及其布置方式對混合配筋混凝土梁抗彎性能的影響。結果表明:BFRP筋/鋼筋混合配筋混凝土梁的破壞形式均為鋼筋屈服后受壓區混凝土被壓碎;配筋面積比Af /As越大,初裂荷載越小,裂縫總數越少,撓度逐漸增加;建立的數值分析模型能較準確地模擬BFRP筋/鋼筋混合配筋混凝土梁的抗彎性能;BFRP筋、AFRP筋(芳綸纖維增強筋)及GFRP筋(玻璃纖維增強筋)與鋼筋混合配筋混凝土梁的荷載-撓度曲線比較接近;與BFRP筋相比,CFRP筋(碳纖維增強筋)/鋼筋混合配筋混凝土梁的開裂荷載和極限荷載分別高14.2%和9.3%,最大撓度小35%左右;BFRP筋的布置方式(單層或雙層)對混合配筋混凝土梁抗彎性能的影響不大。

    Abstract: Through flexural test, the flexural capacity, failure mode, flexibility deformation and crack distribution of basalt fiber reinforced bars (BFRP bars) and steel hybrid reinforced concrete beams were analyzed. Based on the test datas, a 3D finite element model of BFRP bars/steel hybrid reinforced concrete beams was established by using ANSYS software, and compared with the experimental results. Based on the numerical analysis model, the influence of FRP bar types and their arrangement on flexural performance of hybrid reinforced concrete beams was studied. The results show that the failure mode of BFRP bars/steel hybrid reinforced concrete beams is that the concrete in the compression zone is crushed after the steel bars yield. The larger the Af /As, the smaller the initial crack load, the smaller the total number of cracks, and the deflection is increased gradually. The established numerical analysis model can more accurately simulate the flexural performance of BFRP bars/steel hybrid reinforced concrete beams. The load-deflection curves of BFRP bars, AFRP bars, and GFRP bars and steel hybrid reinforced concrete beams are close. Compared with BFRP bars, the cracking load and ultimate load of CFRP bars/rebar hybrid reinforced concrete beams are 14.2% and 9.3% higher, respectively, and the maximum deflection is about 35% smaller. The arrangement of BFRP bars (single layer or double layer) has little effect on the flexural performance of hybrid reinforced concrete beams.

    付瑩,孔祥清,于洋,等.BFRP筋/鋼筋混合配筋混凝土梁抗彎試驗與有限元分析[J].混凝土與水泥制品,2020(10):45-50.

    FU Y,KONG X Q,YU Y,et al.Flexural Test and Finite Element Analysis of BFRP Bars/steel Hybrid Reinforced Concrete Beams[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):45-50.

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    摘 ? 要:通過抗彎性能試驗,分析了玄武巖纖維增強筋(BFRP筋)/鋼筋混合配筋混凝土梁的承載力、破壞形態、撓度及裂縫發展情況。在試驗基礎上利用ANSYS軟件建立了BFRP筋/鋼筋混合配筋混凝土梁的三維有限元數值分析模型,并與試驗結果進行了對比。在數值分析模型基礎上研究了FRP筋類型及其布置方式對混合配筋混凝土梁抗彎性能的影響。結果表明:BFRP筋/鋼筋混合配筋混凝土梁的破壞形式均為鋼筋屈服后受壓區混凝土被壓碎;配筋面積比Af /As越大,初裂荷載越小,裂縫總數越少,撓度逐漸增加;建立的數值分析模型能較準確地模擬BFRP筋/鋼筋混合配筋混凝土梁的抗彎性能;BFRP筋、AFRP筋(芳綸纖維增強筋)及GFRP筋(玻璃纖維增強筋)與鋼筋混合配筋混凝土梁的荷載-撓度曲線比較接近;與BFRP筋相比,CFRP筋(碳纖維增強筋)/鋼筋混合配筋混凝土梁的開裂荷載和極限荷載分別高14.2%和9.3%,最大撓度小35%左右;BFRP筋的布置方式(單層或雙層)對混合配筋混凝土梁抗彎性能的影響不大。 Abstract: Through flexural test, the flexural capacity, failure mode, flexibility deformation and crack distribution of basalt fiber reinforced bars (BFRP bars) and steel hybrid reinforced concrete beams were analyzed. Based on the test datas, a 3D finite element model of BFRP bars/steel hybrid reinforced concrete beams was established by using ANSYS software, and compared with the experimental results. Based on the numerical analysis model, the influence of FRP bar types and their arrangement on flexural performance of hybrid reinforced concrete beams was studied. The results show that the failure mode of BFRP bars/steel hybrid reinforced concrete beams is that the concrete in the compression zone is crushed after the steel bars yield. The larger the Af /As, the smaller the initial crack load, the smaller the total number of cracks, and the deflection is increased gradually. The established numerical analysis model can more accurately simulate the flexural performance of BFRP bars/steel hybrid reinforced concrete beams. The load-deflection curves of BFRP bars, AFRP bars, and GFRP bars and steel hybrid reinforced concrete beams are close. Compared with BFRP bars, the cracking load and ultimate load of CFRP bars/rebar hybrid reinforced concrete beams are 14.2% and 9.3% higher, respectively, and the maximum deflection is about 35% smaller. The arrangement of BFRP bars (single layer or double layer) has little effect on the flexural performance of hybrid reinforced concrete beams.
    英文名 : Flexural Test and Finite Element Analysis of BFRP Bars/steel Hybrid Reinforced Concrete Beams
    刊期 : 2020年第10期
    關鍵詞 : 混合配筋混凝土梁;BFRP筋;抗彎性能試驗;有限元分析
    Key words : Hybrid reinforcement concrete beam; BFRP bar; Flexural test; Finite element analysis
    刊期 : 2020年第10期
    DOI : 10.19761/j.1000-4637.2020.10.045.06
    文章編號 :
    基金項目 : 國家自然科學基金項目(51704029);遼寧省興遼英才青年拔尖項目(XLYC1807050)。
    作者 : 付 瑩1,孔祥清2,于 洋2,高紅軍3
    單位 : 1.渤海大學 工學院,遼寧 錦州 121001;2.遼寧工業大學 土木建筑工程學院,遼寧 錦州 121001; 3.錦州集信高溫材料有限公司,遼寧 錦州 121001

    付 瑩1,孔祥清2,于 洋2,高紅軍3

    摘 ? 要:通過抗彎性能試驗,分析了玄武巖纖維增強筋(BFRP筋)/鋼筋混合配筋混凝土梁的承載力、破壞形態、撓度及裂縫發展情況。在試驗基礎上利用ANSYS軟件建立了BFRP筋/鋼筋混合配筋混凝土梁的三維有限元數值分析模型,并與試驗結果進行了對比。在數值分析模型基礎上研究了FRP筋類型及其布置方式對混合配筋混凝土梁抗彎性能的影響。結果表明:BFRP筋/鋼筋混合配筋混凝土梁的破壞形式均為鋼筋屈服后受壓區混凝土被壓碎;配筋面積比Af /As越大,初裂荷載越小,裂縫總數越少,撓度逐漸增加;建立的數值分析模型能較準確地模擬BFRP筋/鋼筋混合配筋混凝土梁的抗彎性能;BFRP筋、AFRP筋(芳綸纖維增強筋)及GFRP筋(玻璃纖維增強筋)與鋼筋混合配筋混凝土梁的荷載-撓度曲線比較接近;與BFRP筋相比,CFRP筋(碳纖維增強筋)/鋼筋混合配筋混凝土梁的開裂荷載和極限荷載分別高14.2%和9.3%,最大撓度小35%左右;BFRP筋的布置方式(單層或雙層)對混合配筋混凝土梁抗彎性能的影響不大。

    Abstract: Through flexural test, the flexural capacity, failure mode, flexibility deformation and crack distribution of basalt fiber reinforced bars (BFRP bars) and steel hybrid reinforced concrete beams were analyzed. Based on the test datas, a 3D finite element model of BFRP bars/steel hybrid reinforced concrete beams was established by using ANSYS software, and compared with the experimental results. Based on the numerical analysis model, the influence of FRP bar types and their arrangement on flexural performance of hybrid reinforced concrete beams was studied. The results show that the failure mode of BFRP bars/steel hybrid reinforced concrete beams is that the concrete in the compression zone is crushed after the steel bars yield. The larger the Af /As, the smaller the initial crack load, the smaller the total number of cracks, and the deflection is increased gradually. The established numerical analysis model can more accurately simulate the flexural performance of BFRP bars/steel hybrid reinforced concrete beams. The load-deflection curves of BFRP bars, AFRP bars, and GFRP bars and steel hybrid reinforced concrete beams are close. Compared with BFRP bars, the cracking load and ultimate load of CFRP bars/rebar hybrid reinforced concrete beams are 14.2% and 9.3% higher, respectively, and the maximum deflection is about 35% smaller. The arrangement of BFRP bars (single layer or double layer) has little effect on the flexural performance of hybrid reinforced concrete beams.

    付瑩,孔祥清,于洋,等.BFRP筋/鋼筋混合配筋混凝土梁抗彎試驗與有限元分析[J].混凝土與水泥制品,2020(10):45-50.

    FU Y,KONG X Q,YU Y,et al.Flexural Test and Finite Element Analysis of BFRP Bars/steel Hybrid Reinforced Concrete Beams[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):45-50.

    摘要
    參數
    結論
    參考文獻
    引用本文

    摘   要:通過抗彎性能試驗,分析了玄武巖纖維增強筋(BFRP筋)/鋼筋混合配筋混凝土梁的承載力、破壞形態、撓度及裂縫發展情況。在試驗基礎上利用ANSYS軟件建立了BFRP筋/鋼筋混合配筋混凝土梁的三維有限元數值分析模型,并與試驗結果進行了對比。在數值分析模型基礎上研究了FRP筋類型及其布置方式對混合配筋混凝土梁抗彎性能的影響。結果表明:BFRP筋/鋼筋混合配筋混凝土梁的破壞形式均為鋼筋屈服后受壓區混凝土被壓碎;配筋面積比Af /As越大,初裂荷載越小,裂縫總數越少,撓度逐漸增加;建立的數值分析模型能較準確地模擬BFRP筋/鋼筋混合配筋混凝土梁的抗彎性能;BFRP筋、AFRP筋(芳綸纖維增強筋)及GFRP筋(玻璃纖維增強筋)與鋼筋混合配筋混凝土梁的荷載-撓度曲線比較接近;與BFRP筋相比,CFRP筋(碳纖維增強筋)/鋼筋混合配筋混凝土梁的開裂荷載和極限荷載分別高14.2%和9.3%,最大撓度小35%左右;BFRP筋的布置方式(單層或雙層)對混合配筋混凝土梁抗彎性能的影響不大。

    Abstract: Through flexural test, the flexural capacity, failure mode, flexibility deformation and crack distribution of basalt fiber reinforced bars (BFRP bars) and steel hybrid reinforced concrete beams were analyzed. Based on the test datas, a 3D finite element model of BFRP bars/steel hybrid reinforced concrete beams was established by using ANSYS software, and compared with the experimental results. Based on the numerical analysis model, the influence of FRP bar types and their arrangement on flexural performance of hybrid reinforced concrete beams was studied. The results show that the failure mode of BFRP bars/steel hybrid reinforced concrete beams is that the concrete in the compression zone is crushed after the steel bars yield. The larger the Af /As, the smaller the initial crack load, the smaller the total number of cracks, and the deflection is increased gradually. The established numerical analysis model can more accurately simulate the flexural performance of BFRP bars/steel hybrid reinforced concrete beams. The load-deflection curves of BFRP bars, AFRP bars, and GFRP bars and steel hybrid reinforced concrete beams are close. Compared with BFRP bars, the cracking load and ultimate load of CFRP bars/rebar hybrid reinforced concrete beams are 14.2% and 9.3% higher, respectively, and the maximum deflection is about 35% smaller. The arrangement of BFRP bars (single layer or double layer) has little effect on the flexural performance of hybrid reinforced concrete beams.

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    (1)BFRP筋/鋼筋混合配筋混凝土梁的破壞形式均為鋼筋屈服后受壓區混凝土被壓碎,且配筋面積比Af /As越大,初裂荷載越小,裂縫總數量越少。
    (2)混合配筋混凝土梁的荷載-撓度曲線表現出明顯的三線性特征,曲線的兩個轉折點分別對應開裂荷載和鋼筋屈服荷載。隨配筋面積比Af /As的增大,混合配筋混凝土梁的撓度逐漸增加,說明可以通過合理控制BFRP筋/鋼筋的配筋面積比來滿足規范對構件變形控制的要求。
    (3)數值計算得到的BFRP筋/鋼筋混合配筋混凝土梁的破壞形式、荷載-撓度關系以及裂縫開展等均與試驗結果基本一致,說明本文建立的三維有限元數值模型能夠有效模擬BFRP筋/鋼筋混合配筋混凝土梁的抗彎性能。
    (4)BFRP筋、AFRP筋及GFRP筋與鋼筋混合配筋混凝土梁的荷載-撓度曲線較接近,而CFRP筋/鋼筋混合配筋混凝土梁的抗彎性能與其他三種混合配筋混凝土梁相差較大。與BFRP筋/鋼筋混合配筋混凝土梁相比,CFRP筋/鋼筋混合配筋混凝土梁的開裂荷載和極限荷載分別高14.2%和9.3%,最大撓度則小35%左右。
    (5)在配筋率和配筋面積比一定的情況下,改變BFRP筋布置方式(單層或雙層)對混合配筋混凝土梁的影響不大。

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    付瑩,孔祥清,于洋,.BFRP/鋼筋混合配筋混凝土梁抗彎試驗與有限元分析[J].混凝土與水泥制品,2020(10):45-50.

    FU Y,KONG X Q,YU Y,et al.Flexural Test and Finite Element Analysis of BFRP Bars/steel Hybrid Reinforced Concrete Beams[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):45-50.

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