PC连续刚构桥病害检测及裂缝成因分析
|
摘要
我国幅员辽阔,水道纵横,桥梁建设成为交通线路上的重要组成部分。预应力混凝土连续刚构桥以其众多优点而备受青睐,但苦于病害的困扰,其发展受到了阻碍。为了避免病害的出现或针对己出现的病害采取有效的加固措施,分析病害影响因素及其发生原因就显得尤为重要。本文主要进行了以下研究工作：
首先阐述了PC连续刚构桥的发展背景、历程、特点及展望,详细介绍了影响此类桥梁使用性能的几个重要因素(结构构造、混凝土收缩徐变、预应力损失、温度)的机理、计算方法和适用条件等。然后,探讨了裂缝、跨中下挠等病害,并将裂缝按照不同的方法进行归类。随后,又对北排涌主桥进行了专项检测,详细分析了实测资料,得出病害检测结果。
采用MIDAS/CIVIL软件建立原始的全桥梁单元模型,建立多种工况进行计算,分别研究了结构在收缩徐变、预应力损失、温度、超载等因素影响下的响应。在病害检测结果的基础上,考虑各因素的综合影响,最终获得了较为符合实际损伤状态的梁单元损伤模型。
出于对38#墩上0#块构造和受力上复杂性的考虑,本文还运用MIDAS/FEA对此区域长约26m的梁段,单独建立局部实体模型来进一步分析,然后对比梁单元模型和实体模型的计算结果并得出相应结论。
China has a vast territory with a large amount of watercourse. Bridge construction has become an important part of the road lines. Prestressed concrete (PC) continuous rigid frame bridge is always favored rely on its advantages, but its development has been hampered because of various diseases. So analyzing the causes and influence factors of diseases is particularly important to avoid appearing of the similar diseases or to take effective reinforcement measures. Researches that have done in this paper are as follows:
Firstly, development background, history, characteristics and prospects of PC continuous rigid frame bridge are briefly introduced. The mechanism, calculation methods and application conditions of several important performance affecting factors (structure, shrinkage and creep, loss of prestress, temperature) are described in detail afterwards. Then, cracking, mid-span down-warping and other diseases are mentioned, in addition, cracks are classified by different principles. After that, a special inspection on Bei Pai Yong main bridge is commenced, and based on which, detailed inspection results are gained.
Secondly, the original beam element model is built with MIDAS/CIVIL software. By calculating a variety of conditions, some researches on structural response with influence of shrinkage and creep, prestress loss, temperature and overload have done. And then, based on detect results and influence factors, a damaged state beam element model is built, which is most in line with the actual damage state.
Considering the complexity of structure and force of0#block on38#pier, MIDAS/FEA software is used to build a partial solid element model, which is about26meters long. Latterly, calculated results of damaged state beam element model and partial solid element model are compared, and some conclusions are obtained.
首先阐述了PC连续刚构桥的发展背景、历程、特点及展望,详细介绍了影响此类桥梁使用性能的几个重要因素(结构构造、混凝土收缩徐变、预应力损失、温度)的机理、计算方法和适用条件等。然后,探讨了裂缝、跨中下挠等病害,并将裂缝按照不同的方法进行归类。随后,又对北排涌主桥进行了专项检测,详细分析了实测资料,得出病害检测结果。
采用MIDAS/CIVIL软件建立原始的全桥梁单元模型,建立多种工况进行计算,分别研究了结构在收缩徐变、预应力损失、温度、超载等因素影响下的响应。在病害检测结果的基础上,考虑各因素的综合影响,最终获得了较为符合实际损伤状态的梁单元损伤模型。
出于对38#墩上0#块构造和受力上复杂性的考虑,本文还运用MIDAS/FEA对此区域长约26m的梁段,单独建立局部实体模型来进一步分析,然后对比梁单元模型和实体模型的计算结果并得出相应结论。
China has a vast territory with a large amount of watercourse. Bridge construction has become an important part of the road lines. Prestressed concrete (PC) continuous rigid frame bridge is always favored rely on its advantages, but its development has been hampered because of various diseases. So analyzing the causes and influence factors of diseases is particularly important to avoid appearing of the similar diseases or to take effective reinforcement measures. Researches that have done in this paper are as follows:
Firstly, development background, history, characteristics and prospects of PC continuous rigid frame bridge are briefly introduced. The mechanism, calculation methods and application conditions of several important performance affecting factors (structure, shrinkage and creep, loss of prestress, temperature) are described in detail afterwards. Then, cracking, mid-span down-warping and other diseases are mentioned, in addition, cracks are classified by different principles. After that, a special inspection on Bei Pai Yong main bridge is commenced, and based on which, detailed inspection results are gained.
Secondly, the original beam element model is built with MIDAS/CIVIL software. By calculating a variety of conditions, some researches on structural response with influence of shrinkage and creep, prestress loss, temperature and overload have done. And then, based on detect results and influence factors, a damaged state beam element model is built, which is most in line with the actual damage state.
Considering the complexity of structure and force of0#block on38#pier, MIDAS/FEA software is used to build a partial solid element model, which is about26meters long. Latterly, calculated results of damaged state beam element model and partial solid element model are compared, and some conclusions are obtained.
引文
[1]范立础.预应力混凝土连续梁桥.人民交通出版社,1988.
[2]邵旭东.桥梁工程.人民交通出版社,1985.
[3]马保林.高墩大跨连续刚构桥.人民交通出版社,2001.
[4]楼庄鸿.国内外大跨径桥梁的现状和发展趋势.中南公路工程,1994.
[5]杨高中.连续刚构桥在我国的应用和发展.公路.1998.
[6]刘作霖.预应力T型刚构桥.人民交通出版社,1982
[7]黄珠.既有大跨度PC连续刚构桥使用性能分析.西南交通大学硕士论文,2008.
[8]陈颜辉.大跨度PC连续刚构桥设计探讨.西南交通大学硕士论文,2008.
[9]邬晓光.刚架桥.人民交通出版社,2000.
[10]徐有邻.混凝土结构工程裂缝的判断与处理.中国建筑工业出版社,2009.
[11]詹建辉,陈卉.特大跨度连续刚构桥主梁下挠及裂缝原因分析.中外公路,2005.
[12]马建.三门峡黄河公路大桥的主桥加固.公路,2004.
[13]杨志平,朱桂新,李卫.预应力混凝土连续刚构挠度长期观测.公路,2004.
[14]李海军,李军.连续梁桥预应力混凝土箱梁腹板裂缝成因浅析.华东公路,2000.
[15]陈开利.帕劳共和国的桥梁倒塌事故.国外公路,1998.
[16]万国朝,黄邦本译.预应力混凝土桥梁分段施工和设计.人民交通出版社,1984.
[17]李俊,李小珍,卫星.连续刚构桥底板纵向裂纹原因分析.公路,2005.
[18]周履,陈永春.收缩徐变.中国铁道出版社,1994.
[19]朱宇锋.大跨径PC连续刚构桥温度效应与收缩徐变效应分析.湖南大学硕士论文,2008.
[20]曹淑上.大跨径连续刚构桥温度效应研究及其裂缝控制分析.重庆大学硕士论文,2007.
[21]付春雨.混凝土梁桥的温度场与温度应力研究.西南交通大学硕士论文,2006.
[22]中华人民共和国交通部.公路桥涵设计通用规范.人民交通出版社,2004.
[23]刘兴法.混凝土结构的温度应力分析.人民交通出版社,1991.
[24]范立础.预应力混凝土连续梁桥.人民交通出版社,1988.
[25]TYLin.Deon of Prestressed Concrete structures.John Wiley & Sons,1981.
[26]朱尔玉,刘磊,兰巍,李学民.现代桥梁预应力结构.北京交通大学出版社,2008.
[27]陈颜辉.大跨度PC连续刚构桥设计探讨.西南交通大学硕士论文.2008.
[28]彭卫.PC连续刚构桥防裂设计.地震出版社.2005.
[29]陈丽军.大跨度混凝土刚构桥齿板锚固处箱梁应力及裂缝分析.西南交通大学硕 士论文.2012.
[30]蔚建华.预应力混凝土桥梁施工技术要点.人民交通出版社.2003.
[31]朱汉华,陈孟冲,袁迎捷.预应力混凝土连续箱梁桥裂缝分析与防治.人民交通出版社.2006.
[32]郑为,高水堂.大跨径预应力混凝土桥梁常见病害分析.管理施工.2011.
[33]张世辉.大跨PC连续刚构桥跨中持续下挠原因分析及施工控制实践.西南交通大学硕士论文.2007.
[34]邢云,吴迅.关于大跨预应力混凝土箱梁桥长期下挠的探讨.结构工程师.2007.
[35]Z.P.Bazant, Wittmann,F.H. Creep and Shrinkage in Concrete Structures.John Wiley&Sons Ltd,1982,2-99
[36]卢志芳.考虑时变性和不确定性的混凝土桥梁收缩徐变及预应力损失计算方法.武汉理工大学博士论文.2011.
[37]Mereson, R. Compressive Creep of Prestressed Concrete Mixtures with and without Mixtures. Master of Science Thesis in Civil Engineering, Virginal Tech, February 2001.
[38]颜开先.基于预应力损失的连续刚构桥应力时程分析.西南交通大学硕士论文.2012.
[39]Zuanfeng Pan, Zhitao Lu, Chung C.Fu. Experimental Study on Creep and Shrinkage of High-Strength Plain Concrete and Reinforced Concrete. Advances in Structural engineering.2011,14(2)
[40]N.J.Gardner, J.W.Zhao. Creep and Shrinkage Revisited. ACI Materials Journal.1993, 90(3)
[41]D.B.Mcdonald, Harold Roper. Accuracy of Predication Models for Shrinkage of Concrete, ACI Materials Journal.1993.
[42]Bazant Z P, Baweja S. Justification and refinement of model B3 for concrete creep and shrinkage 1 statistics and Sensitivity.1995,28(4)
[43]Zuanfegn Pan, Chung C.Fu,Yong Jiang. Uncertainty Analysis of Creep and Shrinkage Effect in Long-Span Continuous Rigid Frame of Sutong Bridge. Journal of bridge engineering.2011,16(2)
[44]丁文胜,吕志涛,孟少平,刘钊.混凝土收缩徐变预测模型的分析比较.桥梁建设.2004(6)
[45]汪剑,方志.大跨预应力混凝土箱梁桥收缩徐变效应测试与分析.土木工程学报.2008(1)
[46]龙佩恒.预应力混凝土箱梁桥开裂的数值分析方法.同济大学土木工程学院.2005
[47]方志,汪剑.预应力混凝土箱梁桥竖向预应力损失的实测与分析.土木工程学报.2006,39(5)
[48]周履,蔡登山.关于预应力混凝土桥梁的混凝土应力限值的讨论.国外桥梁.2001.
[49]张方,钱永久,唐继舜.基于结构性能的预应力混凝土刚构桥损伤分析.西南交通大学学报.2009.
[50]邱顺冬.桥梁工程软件midas Civil应用工程实例.人民交通出版社.2012.
[51]董伟.大跨高墩连续刚构铁路桥的稳定性分析.西南交通大学硕士论文.2009.
[52]袁明.大跨高墩连续刚构的车桥系统耦合振动分析.长沙理工大学硕士论文.2005.
[53]刘中剑.连续刚构桥收缩徐变内力分析.上海交通大学硕士论文.2008.
[54]王雪玲.大跨径预应力混凝土桥梁梁体结构下挠成因分析.长安大学硕士论文.2008.
[55]中华人民共和国交通部.公路钢筋混凝土及预应力混凝土桥涵设计规范.人民交通出版社,2004.
[2]邵旭东.桥梁工程.人民交通出版社,1985.
[3]马保林.高墩大跨连续刚构桥.人民交通出版社,2001.
[4]楼庄鸿.国内外大跨径桥梁的现状和发展趋势.中南公路工程,1994.
[5]杨高中.连续刚构桥在我国的应用和发展.公路.1998.
[6]刘作霖.预应力T型刚构桥.人民交通出版社,1982
[7]黄珠.既有大跨度PC连续刚构桥使用性能分析.西南交通大学硕士论文,2008.
[8]陈颜辉.大跨度PC连续刚构桥设计探讨.西南交通大学硕士论文,2008.
[9]邬晓光.刚架桥.人民交通出版社,2000.
[10]徐有邻.混凝土结构工程裂缝的判断与处理.中国建筑工业出版社,2009.
[11]詹建辉,陈卉.特大跨度连续刚构桥主梁下挠及裂缝原因分析.中外公路,2005.
[12]马建.三门峡黄河公路大桥的主桥加固.公路,2004.
[13]杨志平,朱桂新,李卫.预应力混凝土连续刚构挠度长期观测.公路,2004.
[14]李海军,李军.连续梁桥预应力混凝土箱梁腹板裂缝成因浅析.华东公路,2000.
[15]陈开利.帕劳共和国的桥梁倒塌事故.国外公路,1998.
[16]万国朝,黄邦本译.预应力混凝土桥梁分段施工和设计.人民交通出版社,1984.
[17]李俊,李小珍,卫星.连续刚构桥底板纵向裂纹原因分析.公路,2005.
[18]周履,陈永春.收缩徐变.中国铁道出版社,1994.
[19]朱宇锋.大跨径PC连续刚构桥温度效应与收缩徐变效应分析.湖南大学硕士论文,2008.
[20]曹淑上.大跨径连续刚构桥温度效应研究及其裂缝控制分析.重庆大学硕士论文,2007.
[21]付春雨.混凝土梁桥的温度场与温度应力研究.西南交通大学硕士论文,2006.
[22]中华人民共和国交通部.公路桥涵设计通用规范.人民交通出版社,2004.
[23]刘兴法.混凝土结构的温度应力分析.人民交通出版社,1991.
[24]范立础.预应力混凝土连续梁桥.人民交通出版社,1988.
[25]TYLin.Deon of Prestressed Concrete structures.John Wiley & Sons,1981.
[26]朱尔玉,刘磊,兰巍,李学民.现代桥梁预应力结构.北京交通大学出版社,2008.
[27]陈颜辉.大跨度PC连续刚构桥设计探讨.西南交通大学硕士论文.2008.
[28]彭卫.PC连续刚构桥防裂设计.地震出版社.2005.
[29]陈丽军.大跨度混凝土刚构桥齿板锚固处箱梁应力及裂缝分析.西南交通大学硕 士论文.2012.
[30]蔚建华.预应力混凝土桥梁施工技术要点.人民交通出版社.2003.
[31]朱汉华,陈孟冲,袁迎捷.预应力混凝土连续箱梁桥裂缝分析与防治.人民交通出版社.2006.
[32]郑为,高水堂.大跨径预应力混凝土桥梁常见病害分析.管理施工.2011.
[33]张世辉.大跨PC连续刚构桥跨中持续下挠原因分析及施工控制实践.西南交通大学硕士论文.2007.
[34]邢云,吴迅.关于大跨预应力混凝土箱梁桥长期下挠的探讨.结构工程师.2007.
[35]Z.P.Bazant, Wittmann,F.H. Creep and Shrinkage in Concrete Structures.John Wiley&Sons Ltd,1982,2-99
[36]卢志芳.考虑时变性和不确定性的混凝土桥梁收缩徐变及预应力损失计算方法.武汉理工大学博士论文.2011.
[37]Mereson, R. Compressive Creep of Prestressed Concrete Mixtures with and without Mixtures. Master of Science Thesis in Civil Engineering, Virginal Tech, February 2001.
[38]颜开先.基于预应力损失的连续刚构桥应力时程分析.西南交通大学硕士论文.2012.
[39]Zuanfeng Pan, Zhitao Lu, Chung C.Fu. Experimental Study on Creep and Shrinkage of High-Strength Plain Concrete and Reinforced Concrete. Advances in Structural engineering.2011,14(2)
[40]N.J.Gardner, J.W.Zhao. Creep and Shrinkage Revisited. ACI Materials Journal.1993, 90(3)
[41]D.B.Mcdonald, Harold Roper. Accuracy of Predication Models for Shrinkage of Concrete, ACI Materials Journal.1993.
[42]Bazant Z P, Baweja S. Justification and refinement of model B3 for concrete creep and shrinkage 1 statistics and Sensitivity.1995,28(4)
[43]Zuanfegn Pan, Chung C.Fu,Yong Jiang. Uncertainty Analysis of Creep and Shrinkage Effect in Long-Span Continuous Rigid Frame of Sutong Bridge. Journal of bridge engineering.2011,16(2)
[44]丁文胜,吕志涛,孟少平,刘钊.混凝土收缩徐变预测模型的分析比较.桥梁建设.2004(6)
[45]汪剑,方志.大跨预应力混凝土箱梁桥收缩徐变效应测试与分析.土木工程学报.2008(1)
[46]龙佩恒.预应力混凝土箱梁桥开裂的数值分析方法.同济大学土木工程学院.2005
[47]方志,汪剑.预应力混凝土箱梁桥竖向预应力损失的实测与分析.土木工程学报.2006,39(5)
[48]周履,蔡登山.关于预应力混凝土桥梁的混凝土应力限值的讨论.国外桥梁.2001.
[49]张方,钱永久,唐继舜.基于结构性能的预应力混凝土刚构桥损伤分析.西南交通大学学报.2009.
[50]邱顺冬.桥梁工程软件midas Civil应用工程实例.人民交通出版社.2012.
[51]董伟.大跨高墩连续刚构铁路桥的稳定性分析.西南交通大学硕士论文.2009.
[52]袁明.大跨高墩连续刚构的车桥系统耦合振动分析.长沙理工大学硕士论文.2005.
[53]刘中剑.连续刚构桥收缩徐变内力分析.上海交通大学硕士论文.2008.
[54]王雪玲.大跨径预应力混凝土桥梁梁体结构下挠成因分析.长安大学硕士论文.2008.
[55]中华人民共和国交通部.公路钢筋混凝土及预应力混凝土桥涵设计规范.人民交通出版社,2004.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |