胡國(guó)領(lǐng)等
摘要:以南水北調(diào)總干渠上85 m跨徑的某鋼管混凝土系桿拱橋?yàn)槔?,采用有限元軟件Midas Civil建立該橋的空間有限元模型,根據(jù)移動(dòng)荷載分析及動(dòng)力特性計(jì)算結(jié)果,制定橋梁的荷載試驗(yàn)方案。通過全橋荷載試驗(yàn)與理論分析,對(duì)比檢驗(yàn)了橋梁結(jié)構(gòu)的設(shè)計(jì)與施工質(zhì)量,評(píng)估了橋梁結(jié)構(gòu)的承載能力,文中的荷載試驗(yàn)方法可為跨南水北調(diào)總干渠同類型橋梁評(píng)定提供借鑒參考。
關(guān)鍵詞:鋼管混凝土系桿拱橋;荷載試驗(yàn);有限元;動(dòng)力特性;承載能力
中圖分類號(hào):TV68;U441 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):
16721683(2014)05005805
Load test analysis of tied truss arch bridge over main canal of SouthtoNorth Water Diversion Project
HU Guoling1,CHEN Yanyang2,CAO Jing2,HU Zhenwei1
(1.Henan Provincial Construction and Administration Bureau of SouthtoNorth Water Diversion Middle Route Project,Zhenzhou 450008,China;
2.Henan Provincial Communications Planning Survey & Design Institute CO.,LTD.Zhenzhou 450052,China)
Abstract:The finite element software Midas Civil was used to develop a threedimensional model of a practical CFST tied arch bridge with a main span of 85 m over the main canal of the SouthtoNorth Water Diversion Project.Based on the results of moving load analysis and dynamic characteristic property calculation,the load test plan of the bridge was proposed.According to the load test and theoretic analysis of the whole bridge,the design and construction quality of the bridge were tested,and the load bearing capacity of the bridge structure was evaluated.The load test method presented in this paper can provide the basis for the evaluation of the same type of bridges over the main canal of the SouthtoNorth Water Diversion Project.
Key words:tied CFST arch bridge;load test;finite element;dynamic property;load bearing capacity
系桿拱橋是由拱肋、系桿、吊桿和橋面系等組成的協(xié)同受力體系,結(jié)構(gòu)受力特性明確。系桿的主要特征是承受拱腳的水平推力為自平衡體系,相比于傳統(tǒng)拱橋不會(huì)對(duì)外部基礎(chǔ)施加水平推力,對(duì)墩臺(tái)與基礎(chǔ)的要求降低,具有地基適應(yīng)性好、跨越能力大等特點(diǎn),在跨越河流、城市干線或高速公路的橋梁上廣泛應(yīng)用。由于結(jié)構(gòu)受力復(fù)雜,必須通過全橋荷載試驗(yàn)對(duì)橋梁的質(zhì)量和安全性進(jìn)行評(píng)估。
[BT2][STHZ]1 橋梁概況
某跨越南水北調(diào)總干渠的下承式鋼管混凝土系桿拱橋橋梁,5 結(jié)論
(1)桁架式系桿拱橋活載引起的彎矩轉(zhuǎn)化為上下弦內(nèi)力,理論計(jì)算時(shí)拱肋截面加載效率系數(shù)建議采用撓度控制。
(2)寬幅鋼管混凝土系桿拱橋由于自重大,吊桿直徑較粗,短吊桿抗彎剛度和邊界條件對(duì)索力測(cè)量的影響不可忽略,建議采用短吊桿索力計(jì)算公式進(jìn)行計(jì)算。
(3)本橋荷載試驗(yàn)分析結(jié)果表明:系桿、拱肋實(shí)測(cè)撓度和應(yīng)變值小于理論計(jì)算,結(jié)構(gòu)整體性能較好;吊桿最小安全系數(shù)為38,滿足規(guī)范要求;一階實(shí)測(cè)振動(dòng)頻率比理論值大109~129倍,橋梁整體動(dòng)力性能較好,滿足設(shè)計(jì)與規(guī)范要求。
參考文獻(xiàn)(References):
[1] 錢海嬰.大跨徑公鐵兩用系桿拱橋荷載試驗(yàn)方法的研究分析[D].上海同濟(jì)大學(xué),2008.(QIAN Haiying.Load test method research and analysis of longspan tiedarch RailcumRoad
Bridge[D].Shanghai:Tongji University,2008.(in Chinese))
[2] 劉榮.大跨度鋼管混凝土系桿拱橋荷載試驗(yàn)研究[J].中國(guó)建筑金屬結(jié)構(gòu),2013(3):910,26.(LIU Rong.Load test research of largespan CFST arch bridge[J].China Construction Metal Structure,2013(3):910,26.(in Chinese))
[3] 李萬恒,沈紅軍.西塘大橋主橋靜、動(dòng)荷載試驗(yàn)[J].公路交通科技,2004(9):6063.(LI Wanheng,SHEN Hongjun.Dynamic and static load experiment of Xitang bridge[J].JOURNAL OF HIGHWAY AND TRANSPORTATION RESEARCH AND DEVELOPMENT,2004(9):6063.(in Chinese))endprint
[4] 王剛.基于荷載試驗(yàn)的拱式組合橋梁檢測(cè)與加固應(yīng)用研究[D].長(zhǎng)沙湖南大學(xué),2013.(WANG Gang.Study on detection and reinforcement applications of beamarch association bridge based on load test[D].Changsha:Hunan University,2013.(in Chinese))
[5] 黃新衛(wèi).城市鋼管混凝土系桿拱橋的荷載試驗(yàn)[J].廣東公路交通,2010:1820.(HUANG Xinwei.Load test of CFST archbridge in urban area[J].Guangdong Highway Communications,2010:1820.(in Chinese))
[6] 彭桂瀚,楊亞林,陳寶春.鋼管混凝土下承式剛架系桿拱橋型分析[J].公路.2006(4):99103.(PENG Guihan,YANG Yajlin,CHEN Baochun.Analysis of rigidframed tied through arch bridges with concretefilled steel tubular[J].HIGHWAY.2006(4):99103.(in Chinese))
[7] 黃海華,陳劍輝.某系桿拱橋荷載試驗(yàn)分析[J].建筑監(jiān)督檢測(cè)與造價(jià)2008(3):2731.(HUANG Haihua,CHEN Jianhui.The load test analysis of a stafftied arch bridge.[J]Supervision Test and Cost of Construction 2008(3):2731.(in Chinese))
[8] 曹海波,錢振東.預(yù)應(yīng)力混凝土系桿拱橋荷載試驗(yàn)與計(jì)算分析[J].交通與計(jì)算機(jī),2007,25(2).(CAO Haibo,QIAN Zhendong.Loading test and calculation analysis for PC tied arch bridge[J].Computer and Communications,2007,25(2).(in Chinese))
[9] 白雨.大跨度系桿拱橋荷載試驗(yàn)研究[D].成都:西南交通大學(xué),2012.(BAI Yu.Load test research of longspan tiedarch bridges[D].Chengdu:Southwest Jiaotong University,2012.(in Chinese))[ZK)]
[10] [ZK(#]何錦榮,鐘明,陳偉距.某系桿拱橋荷載試驗(yàn)分析研究[J].建筑監(jiān)督檢測(cè)與造價(jià),2013(6):19.(HE Jinrong,ZHONGMing,CHEN Weiju.Analysis of a tied arch bridge load test[J].Supervision Test and Cost of Construction 2013,(6):19.(in Cinese))
[11] 陳寶春.鋼管混凝土拱橋設(shè)計(jì)與施工[M].北京:人民交通出版社,1999.(CHEN Baochun.Design and construction of CFST arch bridge[M].Beijing:China Communications Press,1999.(in Chinese))
[12] 交通部公路科學(xué)研究所.大跨徑混凝土橋梁的試驗(yàn)方法[M].北京:人民交通出版社,1982.(Research institute of highway ministry of transport.The test method of longspan concrete bridge[M].Beijing:China Communications Press,1982.(in Chinese))
[13] 公路橋梁承載能力檢測(cè)評(píng)定規(guī)程(JTG/T J212011)[S].北京:人民交通出版社,2011.(Specification for Inspection and Evaluation of Loadbearing Capacity of Highway Bridge(JTG/T J212011)[S].Beijing:China Communications Press,2011.(in Chinese))
[14] 公路橋涵設(shè)計(jì)通用規(guī)范(JTG D602004)[S].北京:人民交通出版社,2004.(General Code for Design of Highway Bridges and Culverts(JTG D602004)[S].Beijing:China Communications Press,2004.(in Chinese))
[15] 陳強(qiáng),黎永索.短吊桿頻率法索力系數(shù)修正的研究[J].公路工程,2007(10):98100.(CHEN Qiang,LI Yongsuo.Research into revising of coefficient of pulling force of short bar by frequency method[J].Highway engineering,2007(10):98100.(in Chinese))
[16] 袁俊桃.短吊桿索力識(shí)別研究[D].廣州:華南理工大學(xué),2011.(YUAN Juntao.Study for Cable Tensions Identification of Short Suspender[D].Guangzhou:South China University of Technology,2011.(in Chinese))
[17] 靳敏超,管昌生,李新平.鋼管混凝土拱橋吊桿張拉力的有限元優(yōu)化設(shè)計(jì)[J].建材世界,2009,3(30):2730.(JIN Minchao,GUAN Changsheng,LI Xinping.Finite element optimum design of suspenders tension on concretefilled steeltube arch bridge[J].The World of Building Materials.2009,3(30),2730.(in Chinese))
[18] 王紅囡,劉華波.鋼管混凝土系桿拱橋動(dòng)荷載試驗(yàn)[J].四川建筑科學(xué)研究,2009(10):123128.(WANG Hongnan,LIU Huabo.Dynamic load test of CFST arch bridge[J].Sichuan Building Science.2009(10):123128.(in Chinese))
[19] 劉武飛.鋼管混凝土土拱橋結(jié)構(gòu)動(dòng)力荷載試驗(yàn)分析[J].公路工程,2012(3):106110.(LIU Wufei.Dynamic loading test analysis of one concretefilled steel tube arch bridge[J].Highway engineering,2012(3):106110.(in Chinese))
[20] 呂婷.在役混凝土系桿拱橋穩(wěn)定性分析與試驗(yàn)研究[D].西安:長(zhǎng)安大學(xué),2005.(LV Ting.Stability analysis and experimental research of concrete tied arch bridge in service[D].Xi′an:Chang′an University,2005.(in Chinese))endprint
[4] 王剛.基于荷載試驗(yàn)的拱式組合橋梁檢測(cè)與加固應(yīng)用研究[D].長(zhǎng)沙湖南大學(xué),2013.(WANG Gang.Study on detection and reinforcement applications of beamarch association bridge based on load test[D].Changsha:Hunan University,2013.(in Chinese))
[5] 黃新衛(wèi).城市鋼管混凝土系桿拱橋的荷載試驗(yàn)[J].廣東公路交通,2010:1820.(HUANG Xinwei.Load test of CFST archbridge in urban area[J].Guangdong Highway Communications,2010:1820.(in Chinese))
[6] 彭桂瀚,楊亞林,陳寶春.鋼管混凝土下承式剛架系桿拱橋型分析[J].公路.2006(4):99103.(PENG Guihan,YANG Yajlin,CHEN Baochun.Analysis of rigidframed tied through arch bridges with concretefilled steel tubular[J].HIGHWAY.2006(4):99103.(in Chinese))
[7] 黃海華,陳劍輝.某系桿拱橋荷載試驗(yàn)分析[J].建筑監(jiān)督檢測(cè)與造價(jià)2008(3):2731.(HUANG Haihua,CHEN Jianhui.The load test analysis of a stafftied arch bridge.[J]Supervision Test and Cost of Construction 2008(3):2731.(in Chinese))
[8] 曹海波,錢振東.預(yù)應(yīng)力混凝土系桿拱橋荷載試驗(yàn)與計(jì)算分析[J].交通與計(jì)算機(jī),2007,25(2).(CAO Haibo,QIAN Zhendong.Loading test and calculation analysis for PC tied arch bridge[J].Computer and Communications,2007,25(2).(in Chinese))
[9] 白雨.大跨度系桿拱橋荷載試驗(yàn)研究[D].成都:西南交通大學(xué),2012.(BAI Yu.Load test research of longspan tiedarch bridges[D].Chengdu:Southwest Jiaotong University,2012.(in Chinese))[ZK)]
[10] [ZK(#]何錦榮,鐘明,陳偉距.某系桿拱橋荷載試驗(yàn)分析研究[J].建筑監(jiān)督檢測(cè)與造價(jià),2013(6):19.(HE Jinrong,ZHONGMing,CHEN Weiju.Analysis of a tied arch bridge load test[J].Supervision Test and Cost of Construction 2013,(6):19.(in Cinese))
[11] 陳寶春.鋼管混凝土拱橋設(shè)計(jì)與施工[M].北京:人民交通出版社,1999.(CHEN Baochun.Design and construction of CFST arch bridge[M].Beijing:China Communications Press,1999.(in Chinese))
[12] 交通部公路科學(xué)研究所.大跨徑混凝土橋梁的試驗(yàn)方法[M].北京:人民交通出版社,1982.(Research institute of highway ministry of transport.The test method of longspan concrete bridge[M].Beijing:China Communications Press,1982.(in Chinese))
[13] 公路橋梁承載能力檢測(cè)評(píng)定規(guī)程(JTG/T J212011)[S].北京:人民交通出版社,2011.(Specification for Inspection and Evaluation of Loadbearing Capacity of Highway Bridge(JTG/T J212011)[S].Beijing:China Communications Press,2011.(in Chinese))
[14] 公路橋涵設(shè)計(jì)通用規(guī)范(JTG D602004)[S].北京:人民交通出版社,2004.(General Code for Design of Highway Bridges and Culverts(JTG D602004)[S].Beijing:China Communications Press,2004.(in Chinese))
[15] 陳強(qiáng),黎永索.短吊桿頻率法索力系數(shù)修正的研究[J].公路工程,2007(10):98100.(CHEN Qiang,LI Yongsuo.Research into revising of coefficient of pulling force of short bar by frequency method[J].Highway engineering,2007(10):98100.(in Chinese))
[16] 袁俊桃.短吊桿索力識(shí)別研究[D].廣州:華南理工大學(xué),2011.(YUAN Juntao.Study for Cable Tensions Identification of Short Suspender[D].Guangzhou:South China University of Technology,2011.(in Chinese))
[17] 靳敏超,管昌生,李新平.鋼管混凝土拱橋吊桿張拉力的有限元優(yōu)化設(shè)計(jì)[J].建材世界,2009,3(30):2730.(JIN Minchao,GUAN Changsheng,LI Xinping.Finite element optimum design of suspenders tension on concretefilled steeltube arch bridge[J].The World of Building Materials.2009,3(30),2730.(in Chinese))
[18] 王紅囡,劉華波.鋼管混凝土系桿拱橋動(dòng)荷載試驗(yàn)[J].四川建筑科學(xué)研究,2009(10):123128.(WANG Hongnan,LIU Huabo.Dynamic load test of CFST arch bridge[J].Sichuan Building Science.2009(10):123128.(in Chinese))
[19] 劉武飛.鋼管混凝土土拱橋結(jié)構(gòu)動(dòng)力荷載試驗(yàn)分析[J].公路工程,2012(3):106110.(LIU Wufei.Dynamic loading test analysis of one concretefilled steel tube arch bridge[J].Highway engineering,2012(3):106110.(in Chinese))
[20] 呂婷.在役混凝土系桿拱橋穩(wěn)定性分析與試驗(yàn)研究[D].西安:長(zhǎng)安大學(xué),2005.(LV Ting.Stability analysis and experimental research of concrete tied arch bridge in service[D].Xi′an:Chang′an University,2005.(in Chinese))endprint
[4] 王剛.基于荷載試驗(yàn)的拱式組合橋梁檢測(cè)與加固應(yīng)用研究[D].長(zhǎng)沙湖南大學(xué),2013.(WANG Gang.Study on detection and reinforcement applications of beamarch association bridge based on load test[D].Changsha:Hunan University,2013.(in Chinese))
[5] 黃新衛(wèi).城市鋼管混凝土系桿拱橋的荷載試驗(yàn)[J].廣東公路交通,2010:1820.(HUANG Xinwei.Load test of CFST archbridge in urban area[J].Guangdong Highway Communications,2010:1820.(in Chinese))
[6] 彭桂瀚,楊亞林,陳寶春.鋼管混凝土下承式剛架系桿拱橋型分析[J].公路.2006(4):99103.(PENG Guihan,YANG Yajlin,CHEN Baochun.Analysis of rigidframed tied through arch bridges with concretefilled steel tubular[J].HIGHWAY.2006(4):99103.(in Chinese))
[7] 黃海華,陳劍輝.某系桿拱橋荷載試驗(yàn)分析[J].建筑監(jiān)督檢測(cè)與造價(jià)2008(3):2731.(HUANG Haihua,CHEN Jianhui.The load test analysis of a stafftied arch bridge.[J]Supervision Test and Cost of Construction 2008(3):2731.(in Chinese))
[8] 曹海波,錢振東.預(yù)應(yīng)力混凝土系桿拱橋荷載試驗(yàn)與計(jì)算分析[J].交通與計(jì)算機(jī),2007,25(2).(CAO Haibo,QIAN Zhendong.Loading test and calculation analysis for PC tied arch bridge[J].Computer and Communications,2007,25(2).(in Chinese))
[9] 白雨.大跨度系桿拱橋荷載試驗(yàn)研究[D].成都:西南交通大學(xué),2012.(BAI Yu.Load test research of longspan tiedarch bridges[D].Chengdu:Southwest Jiaotong University,2012.(in Chinese))[ZK)]
[10] [ZK(#]何錦榮,鐘明,陳偉距.某系桿拱橋荷載試驗(yàn)分析研究[J].建筑監(jiān)督檢測(cè)與造價(jià),2013(6):19.(HE Jinrong,ZHONGMing,CHEN Weiju.Analysis of a tied arch bridge load test[J].Supervision Test and Cost of Construction 2013,(6):19.(in Cinese))
[11] 陳寶春.鋼管混凝土拱橋設(shè)計(jì)與施工[M].北京:人民交通出版社,1999.(CHEN Baochun.Design and construction of CFST arch bridge[M].Beijing:China Communications Press,1999.(in Chinese))
[12] 交通部公路科學(xué)研究所.大跨徑混凝土橋梁的試驗(yàn)方法[M].北京:人民交通出版社,1982.(Research institute of highway ministry of transport.The test method of longspan concrete bridge[M].Beijing:China Communications Press,1982.(in Chinese))
[13] 公路橋梁承載能力檢測(cè)評(píng)定規(guī)程(JTG/T J212011)[S].北京:人民交通出版社,2011.(Specification for Inspection and Evaluation of Loadbearing Capacity of Highway Bridge(JTG/T J212011)[S].Beijing:China Communications Press,2011.(in Chinese))
[14] 公路橋涵設(shè)計(jì)通用規(guī)范(JTG D602004)[S].北京:人民交通出版社,2004.(General Code for Design of Highway Bridges and Culverts(JTG D602004)[S].Beijing:China Communications Press,2004.(in Chinese))
[15] 陳強(qiáng),黎永索.短吊桿頻率法索力系數(shù)修正的研究[J].公路工程,2007(10):98100.(CHEN Qiang,LI Yongsuo.Research into revising of coefficient of pulling force of short bar by frequency method[J].Highway engineering,2007(10):98100.(in Chinese))
[16] 袁俊桃.短吊桿索力識(shí)別研究[D].廣州:華南理工大學(xué),2011.(YUAN Juntao.Study for Cable Tensions Identification of Short Suspender[D].Guangzhou:South China University of Technology,2011.(in Chinese))
[17] 靳敏超,管昌生,李新平.鋼管混凝土拱橋吊桿張拉力的有限元優(yōu)化設(shè)計(jì)[J].建材世界,2009,3(30):2730.(JIN Minchao,GUAN Changsheng,LI Xinping.Finite element optimum design of suspenders tension on concretefilled steeltube arch bridge[J].The World of Building Materials.2009,3(30),2730.(in Chinese))
[18] 王紅囡,劉華波.鋼管混凝土系桿拱橋動(dòng)荷載試驗(yàn)[J].四川建筑科學(xué)研究,2009(10):123128.(WANG Hongnan,LIU Huabo.Dynamic load test of CFST arch bridge[J].Sichuan Building Science.2009(10):123128.(in Chinese))
[19] 劉武飛.鋼管混凝土土拱橋結(jié)構(gòu)動(dòng)力荷載試驗(yàn)分析[J].公路工程,2012(3):106110.(LIU Wufei.Dynamic loading test analysis of one concretefilled steel tube arch bridge[J].Highway engineering,2012(3):106110.(in Chinese))
[20] 呂婷.在役混凝土系桿拱橋穩(wěn)定性分析與試驗(yàn)研究[D].西安:長(zhǎng)安大學(xué),2005.(LV Ting.Stability analysis and experimental research of concrete tied arch bridge in service[D].Xi′an:Chang′an University,2005.(in Chinese))endprint