高性能复合砂浆钢筋网加固分析及其在桥梁应用研究
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摘要
高性能复合砂浆钢筋网为水泥基层以及钢筋网形成的薄层复合片材,与水泥钢筋网相比,具有较高的韧性、延展性、耐久性、抗裂性以及抗裂性等,是加固混凝土结构理想的材料,逐渐被应用到建筑物的加固领域上。
基于国内外的研究现状,本文所做的工作如下:
(1)综叙高性能复合砂浆钢筋网的发展现状以及加固混凝土梁的设计原理,以最大的配筋率为控制条件,合理分布二层钢筋网面范围,提高结构的抗力,与同等面积的单层钢筋网面相比,二层面形成的结构层性能均匀,能增强水泥钢筋网基层与原结构的协同工作性。
(2)为充分利用钢筋网材料的强度,以7.2m跨度的简支梁(b=250,h=600)模型作为算例,使用ANSYS分析软件,对结构面进行细化,将双层面计算结果与卜良桃试验中的B3梁结果进行比较,提高结构抗力,降低结构的挠度,同时钢筋网剥离起到一定的抑制作用。
(3)复核了沙河裕民桥的结构抗力,对沙河裕民桥连续梁抗力不足的问题,以界限配筋率ρb为延性控制条件,进行高性能复合砂浆钢筋网加固,提高抗力效应,并相应提出施工以及监控要求。
针对大跨度连续梁进行高性能复合砂浆钢筋网加固研究,积极的推广高性能复合砂浆钢筋网技术的应用,对实际工程起一定指导意义,并且提出高性能复合砂浆钢筋网加固的进一步研究方向。
High performance Ferrocement is composited of Ferrocement by for the formation of grass-roots network of thin-layer reinforced composite sheet, with high toughness, ductility, durability and crack resistance, is an ideal material being applied to the area of reinforcement.
According to existed results, my achievements are described as follows:
(1) Fully Syria mortar reinforced composite high-performance networks, as well as the development of reinforced concrete beam design principles, with the double-layers ferrocement in middle and edges parts, improving the structure of the resistance, with the same size of single-layer, enhance the quality network of reinforced concrete structure.
(2) Take full tension of ferrocement,using the 7.2m-span simply supported beam (b = 250, h = 600) model as an example, with ANSYS for refinement of the structure of double-layers, compared with Ltao.P beam B3 Test results, improving effective resistance, reducing the structure of the deflection of ferrocement to play a certain extent stripping.
(3) Reviewed the structure of Shahe Yumin Bridge resistance, analysis the reasons of insufficient resistance, high-performance mortar reinforced composite reinforcement to mprove the resistance effect, and proposed monitoring requirements.
Study on High performance Ferrocement of large-span continuous beam, generalized the application in stengthing fields and gives some actual guidance, as well as supply the direction of further research.
基于国内外的研究现状,本文所做的工作如下:
(1)综叙高性能复合砂浆钢筋网的发展现状以及加固混凝土梁的设计原理,以最大的配筋率为控制条件,合理分布二层钢筋网面范围,提高结构的抗力,与同等面积的单层钢筋网面相比,二层面形成的结构层性能均匀,能增强水泥钢筋网基层与原结构的协同工作性。
(2)为充分利用钢筋网材料的强度,以7.2m跨度的简支梁(b=250,h=600)模型作为算例,使用ANSYS分析软件,对结构面进行细化,将双层面计算结果与卜良桃试验中的B3梁结果进行比较,提高结构抗力,降低结构的挠度,同时钢筋网剥离起到一定的抑制作用。
(3)复核了沙河裕民桥的结构抗力,对沙河裕民桥连续梁抗力不足的问题,以界限配筋率ρb为延性控制条件,进行高性能复合砂浆钢筋网加固,提高抗力效应,并相应提出施工以及监控要求。
针对大跨度连续梁进行高性能复合砂浆钢筋网加固研究,积极的推广高性能复合砂浆钢筋网技术的应用,对实际工程起一定指导意义,并且提出高性能复合砂浆钢筋网加固的进一步研究方向。
High performance Ferrocement is composited of Ferrocement by for the formation of grass-roots network of thin-layer reinforced composite sheet, with high toughness, ductility, durability and crack resistance, is an ideal material being applied to the area of reinforcement.
According to existed results, my achievements are described as follows:
(1) Fully Syria mortar reinforced composite high-performance networks, as well as the development of reinforced concrete beam design principles, with the double-layers ferrocement in middle and edges parts, improving the structure of the resistance, with the same size of single-layer, enhance the quality network of reinforced concrete structure.
(2) Take full tension of ferrocement,using the 7.2m-span simply supported beam (b = 250, h = 600) model as an example, with ANSYS for refinement of the structure of double-layers, compared with Ltao.P beam B3 Test results, improving effective resistance, reducing the structure of the deflection of ferrocement to play a certain extent stripping.
(3) Reviewed the structure of Shahe Yumin Bridge resistance, analysis the reasons of insufficient resistance, high-performance mortar reinforced composite reinforcement to mprove the resistance effect, and proposed monitoring requirements.
Study on High performance Ferrocement of large-span continuous beam, generalized the application in stengthing fields and gives some actual guidance, as well as supply the direction of further research.
引文
[1] Loan D, Shah S P. Moment Capacity and Cracking Behaviour of Ferrocement in Flexure[J]. Journal of the American Concrete Institute, 1973,Vo1.70,No.12, 799-804.
[2] Johnston C D, Mowat D N. Ferrocement-Material Behaviour in Flexural[J]. Journal of Struct,1974,Vol.100,No.5,2054-2069.
[3] M.A. Mansur and P. Paramasivam. Cracking Behavior and Ultimate Strength of Ferrocement in Flexure[J]. Journal of Ferrocement.1986,Vo1.16,No. 4,405-415.
[4] M.A.Mansur. Ultimate Strength Design of Ferrocement in Flexure[J]. Journal of Ferrocement.1988,Vo1,18,No.4, 385-395.
[5] ACI 549 Committee.A Guide for the Design, Construction and Repair of Ferrocement[J]. ACI Structural Journal.1988,Vo1.85,No.3,323-351.
[6] Romualdi J P. Ferrocement for infrastructure rehabilitation[J].Concrete International: Design and Construction.1987,Vo1.9,No.9, 24-28.
[7] Irons M. Laminated for better repair[J]. Concrete International: Design and Construction. 1987,Vo1.9,No.9,34-38.
[8]黄忠邦.国外关于钢筋网水泥砂浆抗震加固的研究[J].建筑结构,1994,(5) 44-47.
[9] Andrews G, Sharma A K. Repaired Reinforced Concrete Beams[J]. Concrete International.1988,Vol.l0,No.4,47-51.
[10] Basaunbul I A, Gubati A, Al Sulaimani, et al. Repaired Reinforced Concrete Beams [J]. ACI Material Journal.1990, Vo1.87,No.4,345-354.
[11] E.H.Fahmy, Y.B.I. Shaheen, Y. S.Korany.Repairing Reinforced Concrete Columns Using Ferrocement Laminates[J]. Journal of Ferrocement,1999,Vo1.29(2),115-124.
[12] Mothana Ahmed Al-Kubaisy, Mohd Zamin Jumaat. Ferrocement Laminate Strengthens RC Beams[J]. Concrete International, Vo1.22(6), 37-43.
[13] Abdulah, Katsuki Takiguchi. An investigation into the behavior and strength of reinforced concrete columns strengthened with ferrocement jackets[J]. Cement & Concrete Composites, 2003,Vo1.25(2), 233-242.
[14] B.Vidivelli,C.Antony Jeyasehar and P.R.Srividya.Repair and Rehabilitation of Reinforced Concrete Beams by Ferrocement [J]. Journal of Ferrocement, 2004, Vo1.34(3), 410-415.
[15]曾令宏.钢筋网复合砂浆加固混凝土受弯构件的试验研究[D].长沙:湖南大学土木工程学院,2003.
[16]龙凌霄.高性能复合砂浆钢筋网加固RC梁受弯承载力研究[D].长沙:湖南大学土木工程学院,2005.
[17]聂建国,王寒冰,张天申等.高强不锈钢绞线网—渗透性聚合物砂浆抗弯加固的试验研究[J].建筑结构学报,2005,Vo1.26,No.2,1-9.
[18]卜良桃.高性能复合砂浆钢筋网加固RC梁的性能研究[D].长沙:湖南大学土木工程学院,2006.
[19]卜良桃,高伟等.高性能复合砂浆钢筋网在某RC框架梁加固中的应用[J].施工技术.2006,35(8):19-21.
[20]叶蓁,胡尚瑜,卜良桃等. HPF加固RC足尺梁二次受力抗弯试验研究[J].湖南大学学报(自然科学版),2007,34(3),15-18.
[21]蒋隆敏.钢筋网高性能水泥复合砂浆加固RC柱在静载与低周反复荷载作用下的性能研究[D].长沙:湖南大学土木工程学院, 2006.
[22]罗兴华,卜良桃等.销钉用于HPF加固混凝土构件的界面黏结性能[J].河海大学学报(自然科学版),2008,Vol.36(3),367-370.
[23] Desayi P, El-kholy S A. Lightweight fibre-reinforced ferro-Cement in tension[J]. Cement&Concrete Composites,1991,13(1):37-48.
[24]李崇智,冯乃谦等.现代高性能混凝土的研究与发展[J].建筑技术,2003, 34(1):23-26.
[25]卜良桃.高性能复合砂浆钢筋网(HPF)加固混凝土结构新技术[D],北京;中国建筑工业出版社,2007,95-99.
[26] Hani H.Nassif, Husam Najm. Experimental and analytical investigation of ferrocement-concrete composite beams[J]. Cement & Concrete Composites.2004,Vo1.26 (70),790-796.
[27] M.A.AI-Hubaisy, Mohd Zamin Jumaat. Flexural behaviour of reinforced concrete slas with ferrocement tension zone cover[J]. Construction and Building Materials. 2000,Vo1.14(3),245-252.
[28]谢慧才,李庚英,熊光晶.新老混凝土粘结界面的微结构及集料—水泥界面的差异.工业建筑,2003,33 (1).
[29]王振领.新老混凝土粘结理论与试验及在桥梁加固工程中的应用研究[D].成都:西南交通大学土木工程学院,2002.
[30]董毓利.混凝土非线性力学基础[M].北京:中国建筑工业出版社,1997.
[31]宋玉普.多种混凝土材料的本构关系和破坏准则[M].北京:中国水利水电出版社,2002.
[32]赵志芳,周厚贵,袁群等.新老混凝土的粘结机理研究与工程应用[M].北京:中国水利水电出版社,2003,8-28.
[33]熊光晶,姜浩,陈立强等.新老混凝土修补界面层粘结质量的改善途径[J].工业建筑,2001,31(10):70-72.
[34]何伟.新老混凝土界面粘结材料及强度的研究[D].长沙:湖南大学土木工程学院,2004,15-16.
[35]高剑平,潘景龙,王雨光.不同界面剂对新旧混凝土粘结强度影响的试验研究[J].哈尔滨建筑大学学报,2001,34 (5):25-29.
[36]刘金伟,谢慧才.修补钢筋混凝土梁新老混凝土界面粘结强度的试验研究[J].土木工程学报,2001, 34(1): 30-32.
[37]李庚英,谢慧才.一种改善新老混凝土修补界面长期性能的方法[J].工业建筑,2002,32(9),54-56.
[38]管大庆,陈章洪等.界面处理对新老混凝土粘结性能的影响[J].混凝土,1994,5.16-22.
[39] van Mier J G M.Fracture Processes of Concrete-Assessment of Material Parameters for Fracture Models [M].CRC Press,1997.
[40] Horsch T,Wittmann F H.Three-dimensional numerical concrete applied to investigate effective properties of composite materials [A].Proceeding of the fourth international conference on fracture mechanics of concrete and concrete structures [C]. Cachan, France, 2001.57-64.
[41] Hordijk D A.Tensile and tensile fatigue behavior of concrete: experiments, modeling and analyses [J].HERON,1992,37(1):5-45.
[42]刘金伟,熊光晶,谢慧才.新老混凝土修补界面方位对粘结强度的影响[J].工业建筑, 2001,31(5):67-69.
[43]敖进滔,谢慧才,熊光晶等.影响新老混凝土粘结界面强度的主要因素[J].工程力学增刊,1997(2):328-333.
[44] GB50068-2001建筑结构可靠度设计统一标准[S].北京:中国建筑工业出版社,2001.
[45] GB50010-2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[46]东南大学,天津大学,同济大学合编.混凝土结构设计原理[M],北京:中国建筑工业出版社,2005(第三版).
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[50]姚继涛.既有结构可靠性理论及应用[M].北京:科学出版社,2008.
[51]尚守平.高性能水泥复合砂浆钢筋网加固混凝土结构设计施工指南[M].北京:中国建筑工业出版社,2008.
[52] CECS 146-2003碳纤维片材加固混凝土结构技术规程[S].北京:中国建筑工业出版社,2003.
[53] GJG18-2003钢筋焊接及验收规程[S].北京:中国建筑工业出版社.
[2] Johnston C D, Mowat D N. Ferrocement-Material Behaviour in Flexural[J]. Journal of Struct,1974,Vol.100,No.5,2054-2069.
[3] M.A. Mansur and P. Paramasivam. Cracking Behavior and Ultimate Strength of Ferrocement in Flexure[J]. Journal of Ferrocement.1986,Vo1.16,No. 4,405-415.
[4] M.A.Mansur. Ultimate Strength Design of Ferrocement in Flexure[J]. Journal of Ferrocement.1988,Vo1,18,No.4, 385-395.
[5] ACI 549 Committee.A Guide for the Design, Construction and Repair of Ferrocement[J]. ACI Structural Journal.1988,Vo1.85,No.3,323-351.
[6] Romualdi J P. Ferrocement for infrastructure rehabilitation[J].Concrete International: Design and Construction.1987,Vo1.9,No.9, 24-28.
[7] Irons M. Laminated for better repair[J]. Concrete International: Design and Construction. 1987,Vo1.9,No.9,34-38.
[8]黄忠邦.国外关于钢筋网水泥砂浆抗震加固的研究[J].建筑结构,1994,(5) 44-47.
[9] Andrews G, Sharma A K. Repaired Reinforced Concrete Beams[J]. Concrete International.1988,Vol.l0,No.4,47-51.
[10] Basaunbul I A, Gubati A, Al Sulaimani, et al. Repaired Reinforced Concrete Beams [J]. ACI Material Journal.1990, Vo1.87,No.4,345-354.
[11] E.H.Fahmy, Y.B.I. Shaheen, Y. S.Korany.Repairing Reinforced Concrete Columns Using Ferrocement Laminates[J]. Journal of Ferrocement,1999,Vo1.29(2),115-124.
[12] Mothana Ahmed Al-Kubaisy, Mohd Zamin Jumaat. Ferrocement Laminate Strengthens RC Beams[J]. Concrete International, Vo1.22(6), 37-43.
[13] Abdulah, Katsuki Takiguchi. An investigation into the behavior and strength of reinforced concrete columns strengthened with ferrocement jackets[J]. Cement & Concrete Composites, 2003,Vo1.25(2), 233-242.
[14] B.Vidivelli,C.Antony Jeyasehar and P.R.Srividya.Repair and Rehabilitation of Reinforced Concrete Beams by Ferrocement [J]. Journal of Ferrocement, 2004, Vo1.34(3), 410-415.
[15]曾令宏.钢筋网复合砂浆加固混凝土受弯构件的试验研究[D].长沙:湖南大学土木工程学院,2003.
[16]龙凌霄.高性能复合砂浆钢筋网加固RC梁受弯承载力研究[D].长沙:湖南大学土木工程学院,2005.
[17]聂建国,王寒冰,张天申等.高强不锈钢绞线网—渗透性聚合物砂浆抗弯加固的试验研究[J].建筑结构学报,2005,Vo1.26,No.2,1-9.
[18]卜良桃.高性能复合砂浆钢筋网加固RC梁的性能研究[D].长沙:湖南大学土木工程学院,2006.
[19]卜良桃,高伟等.高性能复合砂浆钢筋网在某RC框架梁加固中的应用[J].施工技术.2006,35(8):19-21.
[20]叶蓁,胡尚瑜,卜良桃等. HPF加固RC足尺梁二次受力抗弯试验研究[J].湖南大学学报(自然科学版),2007,34(3),15-18.
[21]蒋隆敏.钢筋网高性能水泥复合砂浆加固RC柱在静载与低周反复荷载作用下的性能研究[D].长沙:湖南大学土木工程学院, 2006.
[22]罗兴华,卜良桃等.销钉用于HPF加固混凝土构件的界面黏结性能[J].河海大学学报(自然科学版),2008,Vol.36(3),367-370.
[23] Desayi P, El-kholy S A. Lightweight fibre-reinforced ferro-Cement in tension[J]. Cement&Concrete Composites,1991,13(1):37-48.
[24]李崇智,冯乃谦等.现代高性能混凝土的研究与发展[J].建筑技术,2003, 34(1):23-26.
[25]卜良桃.高性能复合砂浆钢筋网(HPF)加固混凝土结构新技术[D],北京;中国建筑工业出版社,2007,95-99.
[26] Hani H.Nassif, Husam Najm. Experimental and analytical investigation of ferrocement-concrete composite beams[J]. Cement & Concrete Composites.2004,Vo1.26 (70),790-796.
[27] M.A.AI-Hubaisy, Mohd Zamin Jumaat. Flexural behaviour of reinforced concrete slas with ferrocement tension zone cover[J]. Construction and Building Materials. 2000,Vo1.14(3),245-252.
[28]谢慧才,李庚英,熊光晶.新老混凝土粘结界面的微结构及集料—水泥界面的差异.工业建筑,2003,33 (1).
[29]王振领.新老混凝土粘结理论与试验及在桥梁加固工程中的应用研究[D].成都:西南交通大学土木工程学院,2002.
[30]董毓利.混凝土非线性力学基础[M].北京:中国建筑工业出版社,1997.
[31]宋玉普.多种混凝土材料的本构关系和破坏准则[M].北京:中国水利水电出版社,2002.
[32]赵志芳,周厚贵,袁群等.新老混凝土的粘结机理研究与工程应用[M].北京:中国水利水电出版社,2003,8-28.
[33]熊光晶,姜浩,陈立强等.新老混凝土修补界面层粘结质量的改善途径[J].工业建筑,2001,31(10):70-72.
[34]何伟.新老混凝土界面粘结材料及强度的研究[D].长沙:湖南大学土木工程学院,2004,15-16.
[35]高剑平,潘景龙,王雨光.不同界面剂对新旧混凝土粘结强度影响的试验研究[J].哈尔滨建筑大学学报,2001,34 (5):25-29.
[36]刘金伟,谢慧才.修补钢筋混凝土梁新老混凝土界面粘结强度的试验研究[J].土木工程学报,2001, 34(1): 30-32.
[37]李庚英,谢慧才.一种改善新老混凝土修补界面长期性能的方法[J].工业建筑,2002,32(9),54-56.
[38]管大庆,陈章洪等.界面处理对新老混凝土粘结性能的影响[J].混凝土,1994,5.16-22.
[39] van Mier J G M.Fracture Processes of Concrete-Assessment of Material Parameters for Fracture Models [M].CRC Press,1997.
[40] Horsch T,Wittmann F H.Three-dimensional numerical concrete applied to investigate effective properties of composite materials [A].Proceeding of the fourth international conference on fracture mechanics of concrete and concrete structures [C]. Cachan, France, 2001.57-64.
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