成昆线孙水河5号桥加固方案研究
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摘要
本论文采用桥梁常规试验与理论计算分析相结合的方法对成昆线孙水河5号桥主桥预应力混凝土铰接悬臂梁既有病害对梁体结构影响进行分析,根据孙水河5号桥的具体情况,结合国内外桥梁加固成功经验,提出3种加固方法:增加桥墩的两跨连续梁方案、增加桥墩的四跨连续梁方案以及跨中梁段增大截面加固方案。经过对该三种加固方案的理论计算与对比,确定增加桥墩的两跨连续梁加固方案的可行性。
本文主要研究内容及成果包括:
(1)通过对既有结构设计分析和现场试验结果分析确定该桥主桥梁体裂纹病害形成原因及特征,以及加固的必要性。
(2)通过对国内外桥梁加固成功经验的借鉴确定适合成昆线孙水河5号桥主桥梁体裂纹病害的三种加固方案为重点研究内容。
(3)通过对既有结构施工阶段和运营阶段总体分析以及梁段局部有限元分析,验证主桥剪力铰冲击效应是引起本桥梁体裂纹病害的主要原因。
(4)对增加桥墩的两跨连续梁加固方案进行静力计算和结构动力特性和结构地震反应分析,并对加固后主梁运营状态做出评价。
(5)通过对采用增大截面方法进行加固的梁段进行局部分析,对剪力铰附近梁段总体应力和局部应力做出评价。
(6)通过对三种加固方案的技术可行性和经济可行性比较确定增加桥墩的两跨连续梁加固方案为优选方案。
This thesis analyze the effects which come from the existing disease on prestressed concrete hinged cantilever girder on the beam body of the No.5 SunShui bridge on Chengkun railway. It combines the methods of bridge conventional test and theoretical calculation to analysis the existing disease. According to the basic condition of this bridge and successful reinforcement experience home and abroad, three reinforcement methods are proposed: two-span continuous beam scheme with increased piers, four-span continuous beam scheme with increased piers and scheme, and increases the section in mid-span beam segment. Through theoretical calculation and comparison of these three schemes, the feasibility of two-span continuous beam scheme with increased piers is confirmed.
The main contents and achievements of this thesis are as follows:
(1).Through the analysis of existing structure design and field test results, the characteristics and causes of the cracks existing in the beam body of the main bridge as well as the necessity of reinforcement are confirmed.
(2) On the basis of successful bridge reinforcement experience home and abroad, three reinforcement schemes for the crack disease in the beam body are selected as the main research contents.
(3) By the general analysis for construction stage and serve stage of the existing structure as well as the detail finite element analysis of the beam segment, the impact effect of the shear hinge in the main bridge is verified as the main reason for the crack disease of the beam body.
(4) Static calculation, dynamic analysis as well as seismic response analysis are done to study the two-span continuous beam scheme with increased piers. Then the serve stage of the girder after reinforcement is evaluated.
(5) Through the detail analysis of the beam segment that is reinforced by enlarging the section area, a conclusion is drawn to evaluate the overall stress and local stress of the beam segment near to the shear hinge.
(6) By the comparison of the technical and economical feasibility for these three reinforcement schemes, two-span continuous beam scheme with increased piers is chosen as the optimum scheme.
本文主要研究内容及成果包括:
(1)通过对既有结构设计分析和现场试验结果分析确定该桥主桥梁体裂纹病害形成原因及特征,以及加固的必要性。
(2)通过对国内外桥梁加固成功经验的借鉴确定适合成昆线孙水河5号桥主桥梁体裂纹病害的三种加固方案为重点研究内容。
(3)通过对既有结构施工阶段和运营阶段总体分析以及梁段局部有限元分析,验证主桥剪力铰冲击效应是引起本桥梁体裂纹病害的主要原因。
(4)对增加桥墩的两跨连续梁加固方案进行静力计算和结构动力特性和结构地震反应分析,并对加固后主梁运营状态做出评价。
(5)通过对采用增大截面方法进行加固的梁段进行局部分析,对剪力铰附近梁段总体应力和局部应力做出评价。
(6)通过对三种加固方案的技术可行性和经济可行性比较确定增加桥墩的两跨连续梁加固方案为优选方案。
This thesis analyze the effects which come from the existing disease on prestressed concrete hinged cantilever girder on the beam body of the No.5 SunShui bridge on Chengkun railway. It combines the methods of bridge conventional test and theoretical calculation to analysis the existing disease. According to the basic condition of this bridge and successful reinforcement experience home and abroad, three reinforcement methods are proposed: two-span continuous beam scheme with increased piers, four-span continuous beam scheme with increased piers and scheme, and increases the section in mid-span beam segment. Through theoretical calculation and comparison of these three schemes, the feasibility of two-span continuous beam scheme with increased piers is confirmed.
The main contents and achievements of this thesis are as follows:
(1).Through the analysis of existing structure design and field test results, the characteristics and causes of the cracks existing in the beam body of the main bridge as well as the necessity of reinforcement are confirmed.
(2) On the basis of successful bridge reinforcement experience home and abroad, three reinforcement schemes for the crack disease in the beam body are selected as the main research contents.
(3) By the general analysis for construction stage and serve stage of the existing structure as well as the detail finite element analysis of the beam segment, the impact effect of the shear hinge in the main bridge is verified as the main reason for the crack disease of the beam body.
(4) Static calculation, dynamic analysis as well as seismic response analysis are done to study the two-span continuous beam scheme with increased piers. Then the serve stage of the girder after reinforcement is evaluated.
(5) Through the detail analysis of the beam segment that is reinforced by enlarging the section area, a conclusion is drawn to evaluate the overall stress and local stress of the beam segment near to the shear hinge.
(6) By the comparison of the technical and economical feasibility for these three reinforcement schemes, two-span continuous beam scheme with increased piers is chosen as the optimum scheme.
引文
[1]成都铁路局工务检测所、西南交通大学.成昆线K495+804孙水河5号桥常规试验报告.2007
[2]成昆铁路技术总结委员会.成昆铁路·第四册·桥梁.人民铁道出版社.1980
[3]中国铁路桥梁史编辑委员会,中国铁路桥梁史,北京:中国铁道出版社.1987
[4]张劲泉.公路旧桥加固成套技术及工程实例.人民交通出版社.2007
[5]陈开利.桥梁工程鉴定与加固手册.人民交通出版社.2005
[6]刘作霖.预应力T型刚构桥.人民交通出版社.1982
[7]刘效尧.公路桥涵设计手册—梁桥(下册).人民交通出版社.2000
[8]谢幼藩.铁路钢筋混凝土桥(下册).中国铁道出版社.1982
[9]强士中.桥梁工程(下册).高等教育出版社.2004
[10]同济大学.铁路桥梁检定规范.中国铁道出版社.2004
[11]孙立功.桥梁工程(铁路).西南交通大学.2008
[12]叶志明.土木工程概论.高等教育出版社.2009
[13]范立础.预应力砼连续梁桥.人民交通出版社.1985
[14]戴竞.预应力砼连续梁桥设计施工.土木工程学报.1980
[15]李国豪.桥梁结构稳定与振动.中国铁道出版社.1992
[16]李小珍.高速铁路列车～桥梁系统耦合振动理论及应用研究.西南交通大学博士论文.2000
[17]夏禾.车辆与结构动力相互作用.科学出版社.2002
[18]翟婉明.车辆-轨道耦合动力学.中国铁道出版社.1997
[19]交通部公路科学研究院,东南大学.全国既有桥梁加固、改造与评价学术会议论文集 人民交通出版社.2008
[20]刘来君.桥梁加固设计与施工技术.人民交通出版社.2004
[21]蒙云.卢波.桥梁加固与改造.人民交通出版社.2004
[22]姚玲森.桥梁工程(公路与城市道路工程专业用).人民交通出版社.1985
[23]白宝玉.桥梁工程.高等教育出版社.2005
[24]张辉.桥梁工程技术.东北大学出版社.2006
[25]匡希龙.桥涵施工.西南交通大学出版社.2008
[26]王常才.桥涵施工技术(第二版).人民交通出版社.2007
[27]姚玲森.桥梁工程(第2版).人民交通出版社.2008
[28]刘夏平.桥梁工程——全国普通高等院校土木工程类实用创新型系列规划.科学出版社.2005
[29]王国鼎等.桥梁检测与加固(高等学校试用教材).人民交通出版社.2003
[30]张俊平.桥梁检测与维修加固.人民交通出版社.2006
[31]刘明.土木工程结构试验与检测.高等教育出版社.2008
[32]张俊平.桥梁检测.人民交通出版社.2002
[33]王军文.土木工程结构试验[1/1](普通高等学校土木工程专业新编系列教材).中国铁道出版社.2008
[34]曹国辉.土木工程结构试验.中国电力出版社.2009
[35]张树仁.桥梁病害诊断与改造加固设计.人民交通出版社.2006
[36]左成平.混凝土结构粘结加固设计与算例.中国建筑工业出版社.2007
[37]土木工程学会桥梁及结构工程分会.第十七届全国桥梁学术会议论文集.(上下册)(2006.重庆).人民交通出版社.2006
[38]中国公路学会桥梁和结构工程学会.2003年全国桥梁学术会议论文集.人民交通出版社.2003
[39]杨文渊.桥梁施工工程师手册(第二版).人民交通出版社.2006
[40]张立明.Aigor Ansys在桥梁工程中的应用方法与实例.人民交通出版社.2003
[41]单成林.旧桥加固设计原理及计算示例.人民交通出版社.2007
[42]张树仁,王宗林 桥梁病害诊断与改造加固设计 人民交通出版社 2006年04月
[43]李广慧.车辆-无碴轨道-桥梁系统振动特性及其应用.黄河水利出版社.2007
[44]交通部公路科学研究院、东南大学.全国既有桥梁检测、评估及加固学术交流与技术研讨会议论文集.人民交通出版社.2008
[45]邵旭东.桥梁设计与计算.人民交通出版社.2007
[46]李国平.桥梁预应力混凝土技术及设计原理.人民交通出版社.2004
[47]徐栋.桥梁体外预应力设计技术.人民交通出版社.2008
[48]孙广华.曲线梁桥计算.人民交通出版社.1997
[49]秦荣.大跨度桥梁结构.科学出版社.2008
[50]朱尔玉.现代桥梁预应力结构.清华大学出版社.2008
[51]刘山洪.简明预应力混凝土桥梁施工手册.人民交通出版社.2006
[52]邱仲潘,Visual C++6从入门到精通,电子工业出版社,2001
[53]侯捷,STL源码剖析,华中科技大学出版社,2002
[54]侯捷 於春景,C++设计新思维泛型编程与设计模式之应用,华中科技大学出版社,2002
[2]成昆铁路技术总结委员会.成昆铁路·第四册·桥梁.人民铁道出版社.1980
[3]中国铁路桥梁史编辑委员会,中国铁路桥梁史,北京:中国铁道出版社.1987
[4]张劲泉.公路旧桥加固成套技术及工程实例.人民交通出版社.2007
[5]陈开利.桥梁工程鉴定与加固手册.人民交通出版社.2005
[6]刘作霖.预应力T型刚构桥.人民交通出版社.1982
[7]刘效尧.公路桥涵设计手册—梁桥(下册).人民交通出版社.2000
[8]谢幼藩.铁路钢筋混凝土桥(下册).中国铁道出版社.1982
[9]强士中.桥梁工程(下册).高等教育出版社.2004
[10]同济大学.铁路桥梁检定规范.中国铁道出版社.2004
[11]孙立功.桥梁工程(铁路).西南交通大学.2008
[12]叶志明.土木工程概论.高等教育出版社.2009
[13]范立础.预应力砼连续梁桥.人民交通出版社.1985
[14]戴竞.预应力砼连续梁桥设计施工.土木工程学报.1980
[15]李国豪.桥梁结构稳定与振动.中国铁道出版社.1992
[16]李小珍.高速铁路列车～桥梁系统耦合振动理论及应用研究.西南交通大学博士论文.2000
[17]夏禾.车辆与结构动力相互作用.科学出版社.2002
[18]翟婉明.车辆-轨道耦合动力学.中国铁道出版社.1997
[19]交通部公路科学研究院,东南大学.全国既有桥梁加固、改造与评价学术会议论文集 人民交通出版社.2008
[20]刘来君.桥梁加固设计与施工技术.人民交通出版社.2004
[21]蒙云.卢波.桥梁加固与改造.人民交通出版社.2004
[22]姚玲森.桥梁工程(公路与城市道路工程专业用).人民交通出版社.1985
[23]白宝玉.桥梁工程.高等教育出版社.2005
[24]张辉.桥梁工程技术.东北大学出版社.2006
[25]匡希龙.桥涵施工.西南交通大学出版社.2008
[26]王常才.桥涵施工技术(第二版).人民交通出版社.2007
[27]姚玲森.桥梁工程(第2版).人民交通出版社.2008
[28]刘夏平.桥梁工程——全国普通高等院校土木工程类实用创新型系列规划.科学出版社.2005
[29]王国鼎等.桥梁检测与加固(高等学校试用教材).人民交通出版社.2003
[30]张俊平.桥梁检测与维修加固.人民交通出版社.2006
[31]刘明.土木工程结构试验与检测.高等教育出版社.2008
[32]张俊平.桥梁检测.人民交通出版社.2002
[33]王军文.土木工程结构试验[1/1](普通高等学校土木工程专业新编系列教材).中国铁道出版社.2008
[34]曹国辉.土木工程结构试验.中国电力出版社.2009
[35]张树仁.桥梁病害诊断与改造加固设计.人民交通出版社.2006
[36]左成平.混凝土结构粘结加固设计与算例.中国建筑工业出版社.2007
[37]土木工程学会桥梁及结构工程分会.第十七届全国桥梁学术会议论文集.(上下册)(2006.重庆).人民交通出版社.2006
[38]中国公路学会桥梁和结构工程学会.2003年全国桥梁学术会议论文集.人民交通出版社.2003
[39]杨文渊.桥梁施工工程师手册(第二版).人民交通出版社.2006
[40]张立明.Aigor Ansys在桥梁工程中的应用方法与实例.人民交通出版社.2003
[41]单成林.旧桥加固设计原理及计算示例.人民交通出版社.2007
[42]张树仁,王宗林 桥梁病害诊断与改造加固设计 人民交通出版社 2006年04月
[43]李广慧.车辆-无碴轨道-桥梁系统振动特性及其应用.黄河水利出版社.2007
[44]交通部公路科学研究院、东南大学.全国既有桥梁检测、评估及加固学术交流与技术研讨会议论文集.人民交通出版社.2008
[45]邵旭东.桥梁设计与计算.人民交通出版社.2007
[46]李国平.桥梁预应力混凝土技术及设计原理.人民交通出版社.2004
[47]徐栋.桥梁体外预应力设计技术.人民交通出版社.2008
[48]孙广华.曲线梁桥计算.人民交通出版社.1997
[49]秦荣.大跨度桥梁结构.科学出版社.2008
[50]朱尔玉.现代桥梁预应力结构.清华大学出版社.2008
[51]刘山洪.简明预应力混凝土桥梁施工手册.人民交通出版社.2006
[52]邱仲潘,Visual C++6从入门到精通,电子工业出版社,2001
[53]侯捷,STL源码剖析,华中科技大学出版社,2002
[54]侯捷 於春景,C++设计新思维泛型编程与设计模式之应用,华中科技大学出版社,2002