纤维布加固钢筋混凝土抗弯构件的非线性有限元分析
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摘要
随着我国现代经济的发展,对工程质量的要求越来越高,由于材料老化、环境腐蚀、使用功能改变、施工质量低劣以及自然灾害等问题而导致大量的结构设施需要修复和加固。纤维增强复合材料(FRP)是目前建筑结构加固工程领域的一种新型材料,具有钢材所无法比拟的耐腐蚀性和可加工性。通过实验来研究构件与结构的受力性能、破坏机理与计算方法是传统的结构研究方法,具有客观、科学、直观等特点,但是大量的试验将耗费大量的资金、人力与时间,试件的数量、参数变化总是受到限制。这恰恰与建立在大量数据统计分析基础上的概率极限状态计算方法相矛盾。利用有限元法进行计算机仿真来模拟试验,不但能够节省大量的资金,人力与时间,而且还可以避开人为主观因素的影响。
本文建立了纤维布加固钢筋混凝土梁的非线性有限元模型,应用该模型对试验梁进行了数值模拟,试验结果与计算结果吻合较好,说明本文建立的有限元计算模型是可靠的,能较好的模拟纤维布加固钢筋混凝土梁的受力性能,同时为试验结果提供了有力的支持。
应用纤维布加固钢筋混凝土梁非线性有限元模型,对纤维布层数、配筋率、纤维布抗拉强度、纤维布弹性模量、预加载程度等参数进行了分析研究,提出了各参数对纤维布加固钢筋混凝土梁承载力的影响。
在钢筋混凝土梁有限元模型可靠的基础上,进一步建立了钢筋混凝土双向板的有限元模型,应用模型对加固条带宽度、加固层数、配筋率、粘贴方式等参数进行了分析研究,提出了各参数对纤维布加固钢筋混凝土双向板加固效果的影响,可供实际加固工程设计时参考。
Along with our country's modern economic developping,the request to the project quality is getting higher and higher. Because of the material getting older, the environment's corrode,the changing of structure's function, construction quality inferior and natural disaster, massive structure facility need to be repaired and reinforced. Fibre Reinforcement Polymer(FRP) is a new material in the construction structure strengthening works domain at present.It has inoxidizability and machinability which the steel are unable to compare. We can study the component and the structure stress performance, the failure mechanism and the computational method through the experiment.This method is the traditional structural research method.It has objectively, scientific, direct-viewing and so on characteristics, but the massive experiments will consume the massive funds, the manpower and the time, the number of test sample, the parameter variation are always restricted. This exactly contradict to the probability limit method which establish theory in mass data statistical analysis foundation. Using the finite element method through computer to simulat test can not only save the massive funds, the manpower and the time, but can also avoid the artificial subjective factor.
This article establishes non-linear finite element model for the FRP to reinforce the reinforced concrete beam and use this model to simulate experimental beam. The computed result is similar to the test result. It explained that the finite element computation model this article established was reliable.The model can well simulate the textile fiber cloth reinforced the reinforced concrete beam's stress performance and provided the powerful support for the test result simultaneously.
Using the reinforced concrete beam non-linear finite element model,this article studies influence of many parameters,which include the textile fiber cloth layer, the ratio of reinforcement, the textile fiber cloth tensile strength, textile fiber parameters, cloth elasticity coefficient, pre-load degree and so on.Then this artical proposes various parameters reinforce the reinforced concrete beam supporting capacity to the textile fiber cloth the influence.
Founded by the reinforced concrete beam finite element model reliable,this artical has further established the reinforced concrete bidirectional board finite element model, this article studies influence of many parameters,which include banding width, reinforcement layer, ratio of reinforcement, glue way using the model and so on.Then this artical proposes various parameters reinforced the reinforced concrete bidirectional board reinforcement effect to the textile fiber cloth the influence.It has many significance when the actual strengthening works referred.
本文建立了纤维布加固钢筋混凝土梁的非线性有限元模型,应用该模型对试验梁进行了数值模拟,试验结果与计算结果吻合较好,说明本文建立的有限元计算模型是可靠的,能较好的模拟纤维布加固钢筋混凝土梁的受力性能,同时为试验结果提供了有力的支持。
应用纤维布加固钢筋混凝土梁非线性有限元模型,对纤维布层数、配筋率、纤维布抗拉强度、纤维布弹性模量、预加载程度等参数进行了分析研究,提出了各参数对纤维布加固钢筋混凝土梁承载力的影响。
在钢筋混凝土梁有限元模型可靠的基础上,进一步建立了钢筋混凝土双向板的有限元模型,应用模型对加固条带宽度、加固层数、配筋率、粘贴方式等参数进行了分析研究,提出了各参数对纤维布加固钢筋混凝土双向板加固效果的影响,可供实际加固工程设计时参考。
Along with our country's modern economic developping,the request to the project quality is getting higher and higher. Because of the material getting older, the environment's corrode,the changing of structure's function, construction quality inferior and natural disaster, massive structure facility need to be repaired and reinforced. Fibre Reinforcement Polymer(FRP) is a new material in the construction structure strengthening works domain at present.It has inoxidizability and machinability which the steel are unable to compare. We can study the component and the structure stress performance, the failure mechanism and the computational method through the experiment.This method is the traditional structural research method.It has objectively, scientific, direct-viewing and so on characteristics, but the massive experiments will consume the massive funds, the manpower and the time, the number of test sample, the parameter variation are always restricted. This exactly contradict to the probability limit method which establish theory in mass data statistical analysis foundation. Using the finite element method through computer to simulat test can not only save the massive funds, the manpower and the time, but can also avoid the artificial subjective factor.
This article establishes non-linear finite element model for the FRP to reinforce the reinforced concrete beam and use this model to simulate experimental beam. The computed result is similar to the test result. It explained that the finite element computation model this article established was reliable.The model can well simulate the textile fiber cloth reinforced the reinforced concrete beam's stress performance and provided the powerful support for the test result simultaneously.
Using the reinforced concrete beam non-linear finite element model,this article studies influence of many parameters,which include the textile fiber cloth layer, the ratio of reinforcement, the textile fiber cloth tensile strength, textile fiber parameters, cloth elasticity coefficient, pre-load degree and so on.Then this artical proposes various parameters reinforce the reinforced concrete beam supporting capacity to the textile fiber cloth the influence.
Founded by the reinforced concrete beam finite element model reliable,this artical has further established the reinforced concrete bidirectional board finite element model, this article studies influence of many parameters,which include banding width, reinforcement layer, ratio of reinforcement, glue way using the model and so on.Then this artical proposes various parameters reinforced the reinforced concrete bidirectional board reinforcement effect to the textile fiber cloth the influence.It has many significance when the actual strengthening works referred.
引文
[1]《建筑结构可靠度设计统一标准》(GB50068-2001)
[2]《混凝土结构设计规范》(GB50010-2002)
[3]Hamid Saadatmanesh,Mohammad R.Ehsani,RC beams strengthened with GFRP plates,Ⅰ:Experimental study.Journal of structural engineering[J],1991,Vol.117(11),November,P3417-3433.
[4]F.J.Vecchio and F.Bucci,Analysis of repaired reinforced concrete structures.Journal of structural engineering,Vol.125,No.6,June,1999,P644-52.
[5]中国统计年鉴1999年中国统计信息网(http://www.stats.gov.vn/yearbook).
[6]卓尚木等,钢筋混凝土结构事故分析与加固[M].1997,北京:中国建筑工业出版社.
[7]姚继涛,马永欣,等.建筑物可靠性鉴定和加固—基本原理和方法[M].科学出版社,2003:266-320.
[8]万墨林,韩继云.混凝土结构加固技术[M].中国建筑工业出版社,1995.
[9]张富春,林志伸,肖良钊,庄秉文.建筑物的鉴定加固与改造[M]北京:中国建筑工业出版社,1992.
[10]《建筑结构补强加固技术》编写组.建筑结构补强加固技术[M].北京:中国铁道出版社,1987.
[11]王铁成等.纤维增强塑料的应用现状及其存在的问题.中国首届纤维增强塑料(FRP)混凝土结构学术交流会报告集[M].2000.336-340.
[12]滕锦光,陈建飞,S.T.史密斯,林力.FRP加固混凝土结构.中国建筑工业出版社
[13]赵彤,谢剑著 碳纤维布补强加固混凝土结构新技术 天津大学出版社
[14]周长东,黄承逵 玻璃纤维聚合物在混凝土结构补强加固工程中的应用.混凝土与水泥制品,2001,(4):35-37.
[15]刘君杰,王建坤.纤维增强混凝土的应用现状[J].《天津纺织科技》,41(4):9-14.
[16]李果,王文炜,王国成.FRP加固的钢筋混凝土梁剥离破坏研究综述[J].混凝土,2003,8:37-42.
[17]周仕刚,高永飞.CFRP加固初始受载钢筋混凝土梁弯曲性能的试验研究[J].玻璃钢/复合材料,2003_1_:12-16.
[18]杨政,郭万林,董蕙茹.FRP板加固钢筋混凝土梁正截面强度分析[J].玻璃钢/复合材料,2002,5:3-6.
[19]王文炜,赵国藩.玻璃纤维布加固钢筋混凝土梁正截面抗弯承载力计算[J].建筑结构学报,2004,25(3):92-98.
[20]黄奕辉,李梁峰.GFRP加固混凝土梁的抗弯承载力参数分析.华侨大学学报(自然科学版)[J],24(4):374-379.
[21]丁洪涛,易伟建,洗巧玲.碳纤维布(CFRP)加固压弯构件全过程分析[J].湖南大学学报(自然科学版),2003,30(3):139-141.
[22]陈丽莹,高日.二次受力下CFRP加固混凝土结构抗弯承载力计算方法[J].北方交通大学学报, 27(1):80-83.
[23]刘承斌,周瑾,王柏生,张亦薇 普通玻璃纤维布加固钢筋混凝土梁抗弯性能试验研究[J].玻璃钢/复合材料,2004 2:17-19.
[24]John Newhook,Amin Ghali,Gamil Tadros.Cracking,Deformability of Concrete Flexural Sections with Fiber Reinforced Polymer[J].JOURNAL OF STRUCTURAL ENGINEERING/SEPTEMBER 2002/1195-1201.
[25]Mahmoud T.EI-Mihihny,Joseph W.Tedesco.Analysis of reiforced concrete beams strengthened with FRP laminates[J].JOURNAL OF STRUCTURAL ENGINEERING,JUNE 2000.684-691.
[26]徐芸,徐萌,查润华.碳纤维板加固钢筋混凝土梁裂缝的试验研究;[J]九江学院学报2005,22(4)22-25.
[27]Joseph Robert Yost,Charles H.Goodspeed,Edwin R.Schmeckpeper.Flexuralperformance of concrete beams reinforced with FRP gdds[J].JOURNAL OF COMPOSITES FOR CONSTRUCTION FEBRUARY 2001.18-25.
[28]O.Rabinovitchl,Y.Frostig.Delamination failure of RC beams strengthened with FRP strips-a closed-form high-order and fracture mechanics approach[J].JOURNAL OF ENGINEERING MECHANICS.AUGUST 2001.852-861.
[29]Carlo Pellegrino,Claudio Modem.Fiber Reinforced Polymer Shear Strengthening of reinforced concrete Beams with Transverse Steel Reinforcement[J].JOURNAL OF COMPOSITES FOR CONSTRUCTION/MAY 2002/104-111.
[30]碳纤维片材加固修复混凝土结构技术规程[f].中国计划出版社.2003.5.
[31]李献忠.工程结构试验理论与技术[M].天津大学出版社,2004.3.
[32]陈小兵,李荣.FRP加固混凝土结构的设计原则及国外设计标准.工业建筑[J].2001,3(4)17-18.
[33]ACI Committee 440.Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures.24 May 2001.
[34]叶列平.混凝土结构[M].清华大学出版社.2005.8.
[35]天津大学、同济大学、东南大学主编.混凝土结构(上册)[M].中国建筑工业出版社,1998.
[36]王铁梦,工程结构裂缝控制[M].中国建筑工业出版社1997,107-110
[37]江见鲸著.钢筋混凝土结构非线性有限元分析[M].陕西科学技术出版社,1994.
[38]蔡光汀,侯云芳.碳纤维布加固混凝土结构的性能及技术[M].混凝土(9)2001(43-45).
[39]姚继涛等.建筑物可靠性鉴定和加固—基本原理和方法[M].科学出版社,2003.
[40]建筑结构补强加固技术编写组.建筑结构补强加固技术[M].中国铁道出版社,1987.
[41]过镇海,时旭东.钢筋混凝土原理和分析[M].北京,清华大学出版社.2003.239-252,335-340.
[42]顾祥林,孙飞飞编著混凝土结构的计算机仿真[M].同济大学出版社.2002
[43]老虎工作室,李权著.ANSYS在土木工程中的应用[M].人民邮电出版社
[44]陆新征,江见鲸.利用ANSYS SOLID65单元分析复杂应力条件下的混凝土结构[J].建筑结构.2003,33(6),22-24
[45]吕西林,金国芳,吴晓涵.钢筋混凝土结构非线性有限元理论与应用[M].上海:同济大学出版社.1997,109-114
[46]朱伯芳.有限单元法原理与应用[M].中国水利水电出版社.1998,20-39
[47]王勖成,邵敏.有限单元法基本原理和数值方法[M].清华大学出版社.2000,71-89
[48]李皓月,周天明,刘相新编著.ANSYS工程计算应用教程[M].中国铁道工业出版社.2003,1-422
[49]何政,欧进萍.钢筋混凝土结构非线性分析.哈尔滨工业大学出版社
[50]洪庆章,刘清吉,郭嘉源编著.ANSYS教学范例.中国铁道出版社
[51]姜勇,张波编著.ANSYS9.0实例精解.清华大学出版社
[52]杜平安,甘娥忠,于亚婷编著.有限元法-原理、建模及应用.国防工业出版社
[53]刘涛,杨风鹏编著.精通ANSYS.清华大学出版社
[54]李黎明编著.ANSYS有限元分析实用教程.清华大学出版社
[55]万黎黎,陈忠范 采用三种纤维加固钢筋混凝土板的试验研究.结构工程师2007.2(1)23
[56]江见鲸 陆新征 叶列平著 混凝土结构有限元分析 清华大学出版社
[57]郝文化 主编 ANSYS土木工程应用实例 中国水利水电出版社.
[2]《混凝土结构设计规范》(GB50010-2002)
[3]Hamid Saadatmanesh,Mohammad R.Ehsani,RC beams strengthened with GFRP plates,Ⅰ:Experimental study.Journal of structural engineering[J],1991,Vol.117(11),November,P3417-3433.
[4]F.J.Vecchio and F.Bucci,Analysis of repaired reinforced concrete structures.Journal of structural engineering,Vol.125,No.6,June,1999,P644-52.
[5]中国统计年鉴1999年中国统计信息网(http://www.stats.gov.vn/yearbook).
[6]卓尚木等,钢筋混凝土结构事故分析与加固[M].1997,北京:中国建筑工业出版社.
[7]姚继涛,马永欣,等.建筑物可靠性鉴定和加固—基本原理和方法[M].科学出版社,2003:266-320.
[8]万墨林,韩继云.混凝土结构加固技术[M].中国建筑工业出版社,1995.
[9]张富春,林志伸,肖良钊,庄秉文.建筑物的鉴定加固与改造[M]北京:中国建筑工业出版社,1992.
[10]《建筑结构补强加固技术》编写组.建筑结构补强加固技术[M].北京:中国铁道出版社,1987.
[11]王铁成等.纤维增强塑料的应用现状及其存在的问题.中国首届纤维增强塑料(FRP)混凝土结构学术交流会报告集[M].2000.336-340.
[12]滕锦光,陈建飞,S.T.史密斯,林力.FRP加固混凝土结构.中国建筑工业出版社
[13]赵彤,谢剑著 碳纤维布补强加固混凝土结构新技术 天津大学出版社
[14]周长东,黄承逵 玻璃纤维聚合物在混凝土结构补强加固工程中的应用.混凝土与水泥制品,2001,(4):35-37.
[15]刘君杰,王建坤.纤维增强混凝土的应用现状[J].《天津纺织科技》,41(4):9-14.
[16]李果,王文炜,王国成.FRP加固的钢筋混凝土梁剥离破坏研究综述[J].混凝土,2003,8:37-42.
[17]周仕刚,高永飞.CFRP加固初始受载钢筋混凝土梁弯曲性能的试验研究[J].玻璃钢/复合材料,2003_1_:12-16.
[18]杨政,郭万林,董蕙茹.FRP板加固钢筋混凝土梁正截面强度分析[J].玻璃钢/复合材料,2002,5:3-6.
[19]王文炜,赵国藩.玻璃纤维布加固钢筋混凝土梁正截面抗弯承载力计算[J].建筑结构学报,2004,25(3):92-98.
[20]黄奕辉,李梁峰.GFRP加固混凝土梁的抗弯承载力参数分析.华侨大学学报(自然科学版)[J],24(4):374-379.
[21]丁洪涛,易伟建,洗巧玲.碳纤维布(CFRP)加固压弯构件全过程分析[J].湖南大学学报(自然科学版),2003,30(3):139-141.
[22]陈丽莹,高日.二次受力下CFRP加固混凝土结构抗弯承载力计算方法[J].北方交通大学学报, 27(1):80-83.
[23]刘承斌,周瑾,王柏生,张亦薇 普通玻璃纤维布加固钢筋混凝土梁抗弯性能试验研究[J].玻璃钢/复合材料,2004 2:17-19.
[24]John Newhook,Amin Ghali,Gamil Tadros.Cracking,Deformability of Concrete Flexural Sections with Fiber Reinforced Polymer[J].JOURNAL OF STRUCTURAL ENGINEERING/SEPTEMBER 2002/1195-1201.
[25]Mahmoud T.EI-Mihihny,Joseph W.Tedesco.Analysis of reiforced concrete beams strengthened with FRP laminates[J].JOURNAL OF STRUCTURAL ENGINEERING,JUNE 2000.684-691.
[26]徐芸,徐萌,查润华.碳纤维板加固钢筋混凝土梁裂缝的试验研究;[J]九江学院学报2005,22(4)22-25.
[27]Joseph Robert Yost,Charles H.Goodspeed,Edwin R.Schmeckpeper.Flexuralperformance of concrete beams reinforced with FRP gdds[J].JOURNAL OF COMPOSITES FOR CONSTRUCTION FEBRUARY 2001.18-25.
[28]O.Rabinovitchl,Y.Frostig.Delamination failure of RC beams strengthened with FRP strips-a closed-form high-order and fracture mechanics approach[J].JOURNAL OF ENGINEERING MECHANICS.AUGUST 2001.852-861.
[29]Carlo Pellegrino,Claudio Modem.Fiber Reinforced Polymer Shear Strengthening of reinforced concrete Beams with Transverse Steel Reinforcement[J].JOURNAL OF COMPOSITES FOR CONSTRUCTION/MAY 2002/104-111.
[30]碳纤维片材加固修复混凝土结构技术规程[f].中国计划出版社.2003.5.
[31]李献忠.工程结构试验理论与技术[M].天津大学出版社,2004.3.
[32]陈小兵,李荣.FRP加固混凝土结构的设计原则及国外设计标准.工业建筑[J].2001,3(4)17-18.
[33]ACI Committee 440.Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures.24 May 2001.
[34]叶列平.混凝土结构[M].清华大学出版社.2005.8.
[35]天津大学、同济大学、东南大学主编.混凝土结构(上册)[M].中国建筑工业出版社,1998.
[36]王铁梦,工程结构裂缝控制[M].中国建筑工业出版社1997,107-110
[37]江见鲸著.钢筋混凝土结构非线性有限元分析[M].陕西科学技术出版社,1994.
[38]蔡光汀,侯云芳.碳纤维布加固混凝土结构的性能及技术[M].混凝土(9)2001(43-45).
[39]姚继涛等.建筑物可靠性鉴定和加固—基本原理和方法[M].科学出版社,2003.
[40]建筑结构补强加固技术编写组.建筑结构补强加固技术[M].中国铁道出版社,1987.
[41]过镇海,时旭东.钢筋混凝土原理和分析[M].北京,清华大学出版社.2003.239-252,335-340.
[42]顾祥林,孙飞飞编著混凝土结构的计算机仿真[M].同济大学出版社.2002
[43]老虎工作室,李权著.ANSYS在土木工程中的应用[M].人民邮电出版社
[44]陆新征,江见鲸.利用ANSYS SOLID65单元分析复杂应力条件下的混凝土结构[J].建筑结构.2003,33(6),22-24
[45]吕西林,金国芳,吴晓涵.钢筋混凝土结构非线性有限元理论与应用[M].上海:同济大学出版社.1997,109-114
[46]朱伯芳.有限单元法原理与应用[M].中国水利水电出版社.1998,20-39
[47]王勖成,邵敏.有限单元法基本原理和数值方法[M].清华大学出版社.2000,71-89
[48]李皓月,周天明,刘相新编著.ANSYS工程计算应用教程[M].中国铁道工业出版社.2003,1-422
[49]何政,欧进萍.钢筋混凝土结构非线性分析.哈尔滨工业大学出版社
[50]洪庆章,刘清吉,郭嘉源编著.ANSYS教学范例.中国铁道出版社
[51]姜勇,张波编著.ANSYS9.0实例精解.清华大学出版社
[52]杜平安,甘娥忠,于亚婷编著.有限元法-原理、建模及应用.国防工业出版社
[53]刘涛,杨风鹏编著.精通ANSYS.清华大学出版社
[54]李黎明编著.ANSYS有限元分析实用教程.清华大学出版社
[55]万黎黎,陈忠范 采用三种纤维加固钢筋混凝土板的试验研究.结构工程师2007.2(1)23
[56]江见鲸 陆新征 叶列平著 混凝土结构有限元分析 清华大学出版社
[57]郝文化 主编 ANSYS土木工程应用实例 中国水利水电出版社.