多跨连续刚构桥静力特性及地震响应分析
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摘要
近年来,多跨连续刚构桥在实际中的应用越来越广泛,尤其是我国的西南和西北地区,高墩大跨径连续刚构桥无论在技术上还是经济上都有很大优势。连续刚构桥平衡悬臂施工过程中结构受力状态比较复杂,为了保证施工过程的安全性以及桥梁线形、应力符合设计要求,需要对施工过程和运营阶段结构的应力、变形进行验算;其次,在地震灾害中,作为生命线的桥梁工程往往损坏严重,因此研究桥梁的地震响应具有重要的意义。综上,本文的主要工作如下：
首先,以五跨连续刚构桥——三灵快速通道上的弘农涧河特大桥为工程背景,采用大型桥梁专用有限元软件MIDAS/Civil建立了该桥的有限元模型,模拟了该桥悬臂施工的全过程,分析了施工过程中和运营阶段应力、变形情况,并讨论了运营阶段主要荷载工况对结构内力和变形的影响。
其后,对弘农涧河特大桥进行反应谱分析,通过纵桥向+横桥向和纵桥向+横桥向+竖向两种地震输入方式,得出该桥在反应谱法输入下的地震响应的一些结论。
最后,对弘农涧河特大桥进行动力时程响应分析,根据实际情况,选用了EL-Centro波,分析该桥在上述两种不同方向地震加速度组合作用下的响应,并进一步验证了反应谱分析得出的一些结论。最后比较反应谱法和时程分析法的计算结果,得出一些合理结论。
通过上述分析能对弘农涧河特大桥以及同类桥梁的设计施工和抗震设计提供一定的参考。
In recent years, the multi-span continuous rigid frame bridge is used more and more widely in the practical project. the long-span continuous rigid frame bridge with high-rise piers bridge has great advantages both in terms of technology and economy, especially in the Southwest and Northwest regions of our country. The stress state of the structure is very complex during the balanced cantilever construction process. In order to ensure that the construction process is safe and the bridge alignment and stress conform to design requirements, the stress and deformation in the construction process and operation stages need to be checked. Besides, as the lifeline,the bridges are usually seriously damaged in the earthquake, so it is of great importance to study the seismic response of the bridge. From what has been discussed above, the main work in this paper is as follows:
Firstly, as to study the stress and deformation in the construction process and operation stages and discuss the influence on the stress and deformation of the main load condition, the finite element model of the five-span continuous rigid frame bridge--the HongNongJian extra-large bridge in the SanLing express lines is established to apply to large finite element software MIDAS/Civil.
Secondly, the response spectrum analysis was carried out on the HongNongJian extra-large bridge by two different directions seismic input modes. One is longitudinal to the bridge and transverse to the bridge, the other is longitudinal to the bridge, transverse to the bridge and vertical to the bridge, some conclusions are obtained through the analysis.
Finally, in order to analyze the response under the combination of the two different directions seismic acceleration of the bridge, and to further validate the conclusions of the response spectrum analysis, the dynamic time history response analysis was carried out on the HongNongJian extra-large bridge with the EL-Centro wave. According to analysis it draws some reasonable conclusions with
the comparison of the results of the response spectrum analysis and time history analysis.
From the analysis above, certain references about the design construction and seismic design can be provided to the HongNongJian extra-large bridge and the similar bridges.
首先,以五跨连续刚构桥——三灵快速通道上的弘农涧河特大桥为工程背景,采用大型桥梁专用有限元软件MIDAS/Civil建立了该桥的有限元模型,模拟了该桥悬臂施工的全过程,分析了施工过程中和运营阶段应力、变形情况,并讨论了运营阶段主要荷载工况对结构内力和变形的影响。
其后,对弘农涧河特大桥进行反应谱分析,通过纵桥向+横桥向和纵桥向+横桥向+竖向两种地震输入方式,得出该桥在反应谱法输入下的地震响应的一些结论。
最后,对弘农涧河特大桥进行动力时程响应分析,根据实际情况,选用了EL-Centro波,分析该桥在上述两种不同方向地震加速度组合作用下的响应,并进一步验证了反应谱分析得出的一些结论。最后比较反应谱法和时程分析法的计算结果,得出一些合理结论。
通过上述分析能对弘农涧河特大桥以及同类桥梁的设计施工和抗震设计提供一定的参考。
In recent years, the multi-span continuous rigid frame bridge is used more and more widely in the practical project. the long-span continuous rigid frame bridge with high-rise piers bridge has great advantages both in terms of technology and economy, especially in the Southwest and Northwest regions of our country. The stress state of the structure is very complex during the balanced cantilever construction process. In order to ensure that the construction process is safe and the bridge alignment and stress conform to design requirements, the stress and deformation in the construction process and operation stages need to be checked. Besides, as the lifeline,the bridges are usually seriously damaged in the earthquake, so it is of great importance to study the seismic response of the bridge. From what has been discussed above, the main work in this paper is as follows:
Firstly, as to study the stress and deformation in the construction process and operation stages and discuss the influence on the stress and deformation of the main load condition, the finite element model of the five-span continuous rigid frame bridge--the HongNongJian extra-large bridge in the SanLing express lines is established to apply to large finite element software MIDAS/Civil.
Secondly, the response spectrum analysis was carried out on the HongNongJian extra-large bridge by two different directions seismic input modes. One is longitudinal to the bridge and transverse to the bridge, the other is longitudinal to the bridge, transverse to the bridge and vertical to the bridge, some conclusions are obtained through the analysis.
Finally, in order to analyze the response under the combination of the two different directions seismic acceleration of the bridge, and to further validate the conclusions of the response spectrum analysis, the dynamic time history response analysis was carried out on the HongNongJian extra-large bridge with the EL-Centro wave. According to analysis it draws some reasonable conclusions with
the comparison of the results of the response spectrum analysis and time history analysis.
From the analysis above, certain references about the design construction and seismic design can be provided to the HongNongJian extra-large bridge and the similar bridges.
引文
[1]王利红.中等跨度预应力连续刚构桥设计若干问题研究[D].[硕士学位论文].武汉：武汉理工大学,2003.
[2]小沃尔特波多尔尼著.预应力混凝土桥梁分段施工和设计[M].万国朝,黄帮本译.北京：人民交通出版社.1986.
[3]赵玉银.连续刚构桥施工控制及结构仿真分析[M].成都：西南交通大学,2003.
[4]苏武.预应力混凝十连续刚构桥施工中的结构分析及线性控制[D].[硕士学位论文].西安：西安建筑科技大学,2005.
[5]熊文.高墩大跨连续刚构桥的稳定性与计算分析[D].[硕士学位论文].成都：西南交通大学,2006.
[6]鲍卫刚,周泳涛.等.预应力混凝土梁式桥梁设计施工技术指南[M].北京：人民交通出版社,2009.126-128.
[7]王飞.双肢薄壁高墩连续刚构桥悬臂施工稳定分析[D].[硕士学位论文]湖南，湖南大学,2006.
[8]王应槐.高墩大跨连续刚构桥静动力及稳定性研究[D].[硕士学位论文]长沙,长沙理工,2009.
[9]张军辉.大跨径连续刚构梁桥荷载试验评定与研究[D].[硕士学位论文]武汉,武汉理工大学,2009.
[10]Andrzej S.Nowak, Maria M.Szerszen. Bridge load and resistance models. Engineering Structures,1998,20(11):985-990.
[11]Michael H.Faber, Dimitri V.Val, Mark G.Stewart. Proof load testing for bridge assessment and upgrading. Engineering Structures,2000,22(12):1677-1659.
[12]Antonio Brencich, Donato Sabia. Experimental identification of a multi-span masonry bridge:The Tanaro Bridge. Construction and Building Materials,2008,22(10):2087-2099.
[13]G.Giannopoulos, J.Vantomme, J.Wastiels. Numerical analysis and experimental validation for static loads of a composite bridge structure. Composite Struetures,2003,62(2):235-243.
[14]Frank Baron, Shen-Ying Lien. Analytical studies of a cable stayed girder bridge. Computers & Structures,1973,3(3):443-465.
[15]Reynolds JC,Emanuel JH. Thermal stresses and movements in bridges.Am Soc Civil Engers, J Struct Div,1974,100:63-78
[16]尹一平.大跨度三主桁高速铁路桥梁静力特性分析[D].[博士学位论文]武汉，华中科技大学,2008.
[17]王波,张海龙,武修雄等.基于大质量法的高墩大跨连续刚构桥地震时程反应分析[J].桥梁建设,2006(5)：17-20.
[18]王克海,林新元.徐水河大桥地震响应分析[J].世界桥梁,2004(4)：47～49.
[19]孙艺达,唐光武.高文军.深水高墩连续刚构桥抗震性能分析[J].公路交通技术,2010,(6)：47～50.
[20]刘怀林,郑罡.大跨径连续刚构桥抗震分析及抗震性能评价[J].公路交通技术.2009,(6)：81～84.
[21]范立础.桥梁抗震[M].北京：人民交通出版社，997.
[22]袁万城,等译.桥梁抗震设计与加固[M].人民交通出版社,1997.
[23]范立础,等.大跨度桥梁抗震设计[M].人民交通出版社,2001.
[24]范立础,等,高架桥梁抗震设计[M].人民交通出版社,2001.
[25]胡步毛.高墩大跨连续刚构桥地震分析[M].成都：西南交通大学,2008
[26]范立础.桥梁上程[M].北京：人民交通出版社,2001，上册.
[27]范立础.桥梁工程[M].北京：人民交通出版社,2000,下册.
[28]范立础,等.桥梁延性抗震设计[M].北京：人民交通出版社,2001.
[29]李国豪.桥梁结构稳定与振动[M].北京：中国铁道出版社,1992.
[30]马保林.高墩大跨连续刚构桥[M].北京：人民交通出版社,2001.
[31]李宏男.结构多维抗震理论与设计方法[M].北京：科学出版社,1998.
[32]Midas civil structure engineering system[M]北京：北京迈达斯激素和有限公司.
[33]李杰,李娜.预应力混凝土脊骨梁剪力滞效应研究[J].石家庄铁道学院学报(自然科学版)2009,22(4)：66～70.
[34]邹毅松,单荣相.连续刚构桥合龙顶推力的确定[J].重庆交通大学学报2006,25(2)：66～70.
[35]胡清和,邓江明,周水兴等.多跨连续刚构桥顶推合龙方案研究[J].中外公路.2009,29(3)：109～114.
[36]姚国文,宋文峰,周志祥.多跨连续刚构桥水平顶推力与合龙顺序优化[J].公路与汽运.2008,(1).
[37]中华人民共和国交通部行业标准.公路钢筋混凝土及预应力混凝土桥涵设计规范[S].人民交通出版社,2004.
[38]中华人民共和国交通部行业标准.公路钢筋混凝土及预应力混凝土桥涵设计规范[S].人民交通出版社,2004.
[39]吴海军,张雷,陆萍等.沥青铺装层厚度对连续刚构桥主梁温度梯度应力的影响[J].重庆交通大学学报,2011,30(1)：4～8.
[40]张永水,曹淑上.连续刚构桥线形控制方法研究[J].中外公路,2006,26(6),83～86.
[41]王岐峰,李炎,李万恒等.桥梁自振特性与承载力分析[J].公路交通科技,2005,22(11),93-95.
[42]顾戍华,夏禾,郭薇薇.城市轨道交通高架桥自振特性与动力响应研究[J].北方交通,2007，11：64～67.
[43]宁晓骏,李睿,叶燎原.桥梁自振特性的计算及研究[J].公路交通科技,2002,18(2),27～30.
[44]王一文,陈萍.大跨曲线高墩连续刚构桥自振特性研究[J].科学技术与工程,2012，12：9415～9419.
[45]中华人民共和国行业推荐性标准.公路桥梁抗震设计细则[S].北京：人民交通出版社，2008.
[46]朱晓华.连续刚构桥地震反应分析[J].铁道T程学报,2008,(10)：15～19.
[2]小沃尔特波多尔尼著.预应力混凝土桥梁分段施工和设计[M].万国朝,黄帮本译.北京：人民交通出版社.1986.
[3]赵玉银.连续刚构桥施工控制及结构仿真分析[M].成都：西南交通大学,2003.
[4]苏武.预应力混凝十连续刚构桥施工中的结构分析及线性控制[D].[硕士学位论文].西安：西安建筑科技大学,2005.
[5]熊文.高墩大跨连续刚构桥的稳定性与计算分析[D].[硕士学位论文].成都：西南交通大学,2006.
[6]鲍卫刚,周泳涛.等.预应力混凝土梁式桥梁设计施工技术指南[M].北京：人民交通出版社,2009.126-128.
[7]王飞.双肢薄壁高墩连续刚构桥悬臂施工稳定分析[D].[硕士学位论文]湖南，湖南大学,2006.
[8]王应槐.高墩大跨连续刚构桥静动力及稳定性研究[D].[硕士学位论文]长沙,长沙理工,2009.
[9]张军辉.大跨径连续刚构梁桥荷载试验评定与研究[D].[硕士学位论文]武汉,武汉理工大学,2009.
[10]Andrzej S.Nowak, Maria M.Szerszen. Bridge load and resistance models. Engineering Structures,1998,20(11):985-990.
[11]Michael H.Faber, Dimitri V.Val, Mark G.Stewart. Proof load testing for bridge assessment and upgrading. Engineering Structures,2000,22(12):1677-1659.
[12]Antonio Brencich, Donato Sabia. Experimental identification of a multi-span masonry bridge:The Tanaro Bridge. Construction and Building Materials,2008,22(10):2087-2099.
[13]G.Giannopoulos, J.Vantomme, J.Wastiels. Numerical analysis and experimental validation for static loads of a composite bridge structure. Composite Struetures,2003,62(2):235-243.
[14]Frank Baron, Shen-Ying Lien. Analytical studies of a cable stayed girder bridge. Computers & Structures,1973,3(3):443-465.
[15]Reynolds JC,Emanuel JH. Thermal stresses and movements in bridges.Am Soc Civil Engers, J Struct Div,1974,100:63-78
[16]尹一平.大跨度三主桁高速铁路桥梁静力特性分析[D].[博士学位论文]武汉，华中科技大学,2008.
[17]王波,张海龙,武修雄等.基于大质量法的高墩大跨连续刚构桥地震时程反应分析[J].桥梁建设,2006(5)：17-20.
[18]王克海,林新元.徐水河大桥地震响应分析[J].世界桥梁,2004(4)：47～49.
[19]孙艺达,唐光武.高文军.深水高墩连续刚构桥抗震性能分析[J].公路交通技术,2010,(6)：47～50.
[20]刘怀林,郑罡.大跨径连续刚构桥抗震分析及抗震性能评价[J].公路交通技术.2009,(6)：81～84.
[21]范立础.桥梁抗震[M].北京：人民交通出版社，997.
[22]袁万城,等译.桥梁抗震设计与加固[M].人民交通出版社,1997.
[23]范立础,等.大跨度桥梁抗震设计[M].人民交通出版社,2001.
[24]范立础,等,高架桥梁抗震设计[M].人民交通出版社,2001.
[25]胡步毛.高墩大跨连续刚构桥地震分析[M].成都：西南交通大学,2008
[26]范立础.桥梁上程[M].北京：人民交通出版社,2001，上册.
[27]范立础.桥梁工程[M].北京：人民交通出版社,2000,下册.
[28]范立础,等.桥梁延性抗震设计[M].北京：人民交通出版社,2001.
[29]李国豪.桥梁结构稳定与振动[M].北京：中国铁道出版社,1992.
[30]马保林.高墩大跨连续刚构桥[M].北京：人民交通出版社,2001.
[31]李宏男.结构多维抗震理论与设计方法[M].北京：科学出版社,1998.
[32]Midas civil structure engineering system[M]北京：北京迈达斯激素和有限公司.
[33]李杰,李娜.预应力混凝土脊骨梁剪力滞效应研究[J].石家庄铁道学院学报(自然科学版)2009,22(4)：66～70.
[34]邹毅松,单荣相.连续刚构桥合龙顶推力的确定[J].重庆交通大学学报2006,25(2)：66～70.
[35]胡清和,邓江明,周水兴等.多跨连续刚构桥顶推合龙方案研究[J].中外公路.2009,29(3)：109～114.
[36]姚国文,宋文峰,周志祥.多跨连续刚构桥水平顶推力与合龙顺序优化[J].公路与汽运.2008,(1).
[37]中华人民共和国交通部行业标准.公路钢筋混凝土及预应力混凝土桥涵设计规范[S].人民交通出版社,2004.
[38]中华人民共和国交通部行业标准.公路钢筋混凝土及预应力混凝土桥涵设计规范[S].人民交通出版社,2004.
[39]吴海军,张雷,陆萍等.沥青铺装层厚度对连续刚构桥主梁温度梯度应力的影响[J].重庆交通大学学报,2011,30(1)：4～8.
[40]张永水,曹淑上.连续刚构桥线形控制方法研究[J].中外公路,2006,26(6),83～86.
[41]王岐峰,李炎,李万恒等.桥梁自振特性与承载力分析[J].公路交通科技,2005,22(11),93-95.
[42]顾戍华,夏禾,郭薇薇.城市轨道交通高架桥自振特性与动力响应研究[J].北方交通,2007，11：64～67.
[43]宁晓骏,李睿,叶燎原.桥梁自振特性的计算及研究[J].公路交通科技,2002,18(2),27～30.
[44]王一文,陈萍.大跨曲线高墩连续刚构桥自振特性研究[J].科学技术与工程,2012，12：9415～9419.
[45]中华人民共和国行业推荐性标准.公路桥梁抗震设计细则[S].北京：人民交通出版社，2008.
[46]朱晓华.连续刚构桥地震反应分析[J].铁道T程学报,2008,(10)：15～19.