援马尔代夫中马友谊大桥主桥主梁方案比选
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摘要
中马友谊大桥主桥为V形支腿六跨连续刚构桥,跨径布置为(100+2×180+140+100+60)m。根据桥址处实际工程条件,提出3种主梁方案:混凝土V构+叠合梁(耐候钢)方案、混凝土梁方案、混凝土梁+叠合梁(UHPC桥面板)方案,从结构受力、耐久性、施工难度和工期、经济性对3种方案进行对比分析。结果表明:混凝土梁+叠合梁(UHPC桥面板)主梁方案能有效减轻主梁自重、减小收缩徐变的不利效应、降低对基础受力的影响;结构耐久性较好、维护保养工作量小;施工工法灵活、工期有保障;经济性具有明显优势。因此,中马友谊大桥主桥最终选取混凝土梁+叠合梁(UHPC桥面板)方案作为主梁实施方案。
The main bridge of the China-Maldives Friendship Bridge is a continuous rigid frame bridge which has a structure of V-shaped supporting legs and 6-span arrangement of (100+2×180+140+100+60) m.According to the actual engineering conditions at the bridge site,three schemes of main girder are proposed as follows:a scheme of concrete V-leg rigid frame+composite girder (weathering steel),a scheme of concrete girder,and a scheme of concrete girder+composite girder (UHPC deck).The three schemes are compared and analyzed in terms of structural stress,durability,construction difficulty,construction period,and economy.The comparison results show that application of the main girder scheme of concrete girder+composite girder (UHPC deck) can effectively reduce the dead weight of the main girder,the adverse effect of shrinkage and creep,and the impair on the stress of foundation.The application of the scheme also has advantages of good durability in the bridge structure,small maintenance workload for the bridge,flexible method in construction,being able to guarantee the construction period and obviously high project economy.Therefore,the concrete girder+ composite girder (UHPC deck) scheme is adopted to implement the construction of the main girder for the main bridge of the China-Maldives Friendship Bridge.
The main bridge of the China-Maldives Friendship Bridge is a continuous rigid frame bridge which has a structure of V-shaped supporting legs and 6-span arrangement of (100+2×180+140+100+60) m.According to the actual engineering conditions at the bridge site,three schemes of main girder are proposed as follows:a scheme of concrete V-leg rigid frame+composite girder (weathering steel),a scheme of concrete girder,and a scheme of concrete girder+composite girder (UHPC deck).The three schemes are compared and analyzed in terms of structural stress,durability,construction difficulty,construction period,and economy.The comparison results show that application of the main girder scheme of concrete girder+composite girder (UHPC deck) can effectively reduce the dead weight of the main girder,the adverse effect of shrinkage and creep,and the impair on the stress of foundation.The application of the scheme also has advantages of good durability in the bridge structure,small maintenance workload for the bridge,flexible method in construction,being able to guarantee the construction period and obviously high project economy.Therefore,the concrete girder+ composite girder (UHPC deck) scheme is adopted to implement the construction of the main girder for the main bridge of the China-Maldives Friendship Bridge.
引文
[1]谭国宏,肖海珠,李华云,等.援马尔代夫中马友谊大桥总体设计[J].桥梁建设,2019,49(2):92-96.(TAN Guo-hong,XIAO Hai-zhu,LI Hua-yun,et al.Overall Design of China-Maldives Friendship Bridge[J].Bridge Construction,2019,49(2):92-96.in Chinese)
[2]邱远喜,肖海珠,李华云,等.援马尔代夫中马友谊大桥深水基础设计[J].桥梁建设,2018,48(6):93-98.(QIU Yuan-xi,XIAO Hai-zhu,LI Hua-yun,et al.Design of Deepwater Foundations of China-Maldives Friendship Bridge[J].Bridge Construction,2018,48(6):93-98.in Chinese)
[3]中铁大桥勘测设计院集团有限公司.援马尔代夫中马友谊大桥施工图[Z].武汉:2016.(China Railway Major Bridge Reconnaissance&Design Institute Co.,Ltd.Construction Drawings of China-Maldives Friendship Bridge[Z].Wuhan:2016.in Chinese)
[4]谭永山,余红发,冯滔滔,等.附加措施对海洋环境下混凝土箱梁的寿命影响[J].南京航空航天大学学报,2017,49(4):548-553.(TAN Yong-shan,YU Hong-fa,FENG Tao-tao,et al.Effects of Additional Measures on Service Life of Concrete Box Girder Exposed to Marine Environment[J].Journal of Nanjing University of Aeronautics&Astronautics,2017,49(4):548-553.in Chinese)
[5]刘玉擎,陈艾荣.耐候钢桥的发展及其设计要点[J].桥梁建设,2003(5):39-41,45.(LIU Yu-qing,CHEN Ai-rong.Development and Design Essentials of Weathering Steel Bridges[J].Bridge Construction,2003(5):39-41,45.in Chinese)
[6]韩伟威,吕毅刚.混凝土收缩徐变预测模型试验研究[J].中南大学学报(自然科学版),2016,47(10):3 515-3 522.(HAN Wei-wei,LYU Yi-gang.Experimental Research on Prediction Model of Concrete Shrinkage and Creep[J].Journal of Central South University(Science and Technology),2016,47(10):3 515-3 522.in Chinese)
[7]田启贤,高立强,周尚猛.超高性能混凝土-钢正交异性板组合桥面受力性能研究[J].桥梁建设,2017,47(3):13-18.(TIAN Qi-xian,GAO Li-qiang,ZHOU Shang-meng.Study of Mechanical Behavior of Composite Bridge Deck with Ultra High Performance Concrete and Orthotropic Steel Plate[J].Bridge Construction,2017,47(3):13-18.in Chinese)
[8]崔梦晨,穆志纯,付冬梅,等.大气环境中碳钢腐蚀速率推测方法[J].腐蚀与防护,2016,37(6):503-507,512.(CUI Meng-chen,MU Zhi-chun,FU Dong-mei,et al.Speculation of Carbon Steel Corrosion Rate in Atmospheric Environment[J].Corrosion&Protection,2016,37(6):503-507,512.in Chinese)
[9]万志辉,戴国亮,龚维明.珊瑚礁灰岩层后压浆桩增强效应作用机制[J].岩土力学,2018,39(2):467-473,482.(WAN Zhi-hui,DAI Guo-liang,GONG Wei-ming.Enhanced Mechanism of Post-Grouting Pile in CoralReef Limestone Formations[J].Rock and Soil Mechanics,2018,39(2):467-473,482.in Chinese)
[10]赵人达,张双洋.桥梁顶推法施工研究现状及发展趋势[J].中国公路学报,2016,29(2):32-43.(ZHAO Ren-da,ZHANG Shuang-yang.Research Status and Development Trend on Incremental Launching Construction of Bridges[J].China Journal of Highway and Transport,2016,29(2):32-43.in Chinese)
[2]邱远喜,肖海珠,李华云,等.援马尔代夫中马友谊大桥深水基础设计[J].桥梁建设,2018,48(6):93-98.(QIU Yuan-xi,XIAO Hai-zhu,LI Hua-yun,et al.Design of Deepwater Foundations of China-Maldives Friendship Bridge[J].Bridge Construction,2018,48(6):93-98.in Chinese)
[3]中铁大桥勘测设计院集团有限公司.援马尔代夫中马友谊大桥施工图[Z].武汉:2016.(China Railway Major Bridge Reconnaissance&Design Institute Co.,Ltd.Construction Drawings of China-Maldives Friendship Bridge[Z].Wuhan:2016.in Chinese)
[4]谭永山,余红发,冯滔滔,等.附加措施对海洋环境下混凝土箱梁的寿命影响[J].南京航空航天大学学报,2017,49(4):548-553.(TAN Yong-shan,YU Hong-fa,FENG Tao-tao,et al.Effects of Additional Measures on Service Life of Concrete Box Girder Exposed to Marine Environment[J].Journal of Nanjing University of Aeronautics&Astronautics,2017,49(4):548-553.in Chinese)
[5]刘玉擎,陈艾荣.耐候钢桥的发展及其设计要点[J].桥梁建设,2003(5):39-41,45.(LIU Yu-qing,CHEN Ai-rong.Development and Design Essentials of Weathering Steel Bridges[J].Bridge Construction,2003(5):39-41,45.in Chinese)
[6]韩伟威,吕毅刚.混凝土收缩徐变预测模型试验研究[J].中南大学学报(自然科学版),2016,47(10):3 515-3 522.(HAN Wei-wei,LYU Yi-gang.Experimental Research on Prediction Model of Concrete Shrinkage and Creep[J].Journal of Central South University(Science and Technology),2016,47(10):3 515-3 522.in Chinese)
[7]田启贤,高立强,周尚猛.超高性能混凝土-钢正交异性板组合桥面受力性能研究[J].桥梁建设,2017,47(3):13-18.(TIAN Qi-xian,GAO Li-qiang,ZHOU Shang-meng.Study of Mechanical Behavior of Composite Bridge Deck with Ultra High Performance Concrete and Orthotropic Steel Plate[J].Bridge Construction,2017,47(3):13-18.in Chinese)
[8]崔梦晨,穆志纯,付冬梅,等.大气环境中碳钢腐蚀速率推测方法[J].腐蚀与防护,2016,37(6):503-507,512.(CUI Meng-chen,MU Zhi-chun,FU Dong-mei,et al.Speculation of Carbon Steel Corrosion Rate in Atmospheric Environment[J].Corrosion&Protection,2016,37(6):503-507,512.in Chinese)
[9]万志辉,戴国亮,龚维明.珊瑚礁灰岩层后压浆桩增强效应作用机制[J].岩土力学,2018,39(2):467-473,482.(WAN Zhi-hui,DAI Guo-liang,GONG Wei-ming.Enhanced Mechanism of Post-Grouting Pile in CoralReef Limestone Formations[J].Rock and Soil Mechanics,2018,39(2):467-473,482.in Chinese)
[10]赵人达,张双洋.桥梁顶推法施工研究现状及发展趋势[J].中国公路学报,2016,29(2):32-43.(ZHAO Ren-da,ZHANG Shuang-yang.Research Status and Development Trend on Incremental Launching Construction of Bridges[J].China Journal of Highway and Transport,2016,29(2):32-43.in Chinese)