悬索桥主索鞍超量顶推施工控制分析
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摘要
为精确模拟悬索桥主索鞍在施工中的变化情况,采用空间有限元法,同时考虑结构非线性影响,并通过对比现场实测数据,验证了本研究空间有限元法的合理性。以水云桥为工程背景,建立全桥有限元模型,模拟实际施工过程,对比分析了主索鞍常规顶推、主索鞍不顶推及主索鞍自由滑动3种施工方案分别对应的结构变位和受力状态,得出主索鞍超量顶推的优化施工方案。工程应用结果表明:主索鞍超量顶推不仅能确保结构线形和受力,满足现场施工要求,还具备较高的施工控制精度。
In order to accurately simulate the change of the main cable saddle of the suspension bridge during construction, a spatial finite element method is adopted, the nonlinear influence of the structure is considered. By comparing the field-measured data, the rationality of the spatial finite element calculation method in this research is verified. The Shuiyun Bridge was taken as the studying case, and then the whole bridge finite element model was established. The actual construction process was simulated, and the optimized construction scheme of the main cable saddle pushing was obtained through the comparison of three construction schemes namely the main cable saddle pushing for ensuring the main tower vertical, the main cable saddle consolidation of falling to push and the main cable saddle free sliding. The result of engineering application shows that the excessive pushing of the main cable saddle can not only ensure structural line shape and force to meet the requirement of the on-site construction, but also have high construction control accuracy.
In order to accurately simulate the change of the main cable saddle of the suspension bridge during construction, a spatial finite element method is adopted, the nonlinear influence of the structure is considered. By comparing the field-measured data, the rationality of the spatial finite element calculation method in this research is verified. The Shuiyun Bridge was taken as the studying case, and then the whole bridge finite element model was established. The actual construction process was simulated, and the optimized construction scheme of the main cable saddle pushing was obtained through the comparison of three construction schemes namely the main cable saddle pushing for ensuring the main tower vertical, the main cable saddle consolidation of falling to push and the main cable saddle free sliding. The result of engineering application shows that the excessive pushing of the main cable saddle can not only ensure structural line shape and force to meet the requirement of the on-site construction, but also have high construction control accuracy.
引文
[1]张开鹏,张安平,祝远池.悬索跨越主索鞍顶推分析及方案优化[J].交通科技,2010,35(5):7-9.(ZHANG Kai-peng,ZHAGN An-ping,ZHU Yuan-chi.Pushing analysis and scheme optimization of the main cable saddle for the suspension crossing[J].Transportation Science&Technology,2010,35(5):7-9.(in Chinese))
[2]向忠富.桥梁施工控制技术[M].北京:人民交通出版社,2002.(XIANG Zhong-fu.Bridge construction control technology[M].Beijing:China Communications Press,2002.(in Chinese))
[3]孙胜江,姜军.悬索桥索塔允许偏位及主索鞍顶推分析[J].浙江大学学报,2007,41(1):135-138.(SUN Shengjiang,JIANG Jun.Analysis of tower’s allowable displacemen and main saddle’s pushing of suspension bridge[J].Journal of Zhejiang University,2007,41(1):135-138.(in Chinese))
[4]齐冬春,王昌将,沈锐利,等.悬索桥施工中鞍座顶推的研究[J].中国工程科学,2010,12(7):68-73.(Qi Dong-chun,WANG Chang-jiang,SHEN Rui-li,et al.Saddle pushing analysis in suspension bridge construction[J].Engineering Science in China,2010,12(7):68-73.(in Chinese))
[5]王喜良,岳振民.大跨悬索桥塔顶位移控制值分析[J].桥梁建设,2003(6):38-40.(WANG Xi-liang,YUE Zhengmin.Analysis of the top displacement control values of the long-span suspension bridge[J].Bridge construction,2003(6):38-40.(in Chinese))
[6]黄大元,周昌栋,宋官保,等.悬索桥钢箱梁工地焊接工艺与质量控制[J].中外公路,2002(2):36-38.(HUANG Dayuan,ZHOU Chang-dong,SONG Guan-bao,et al.Welding technology and quality control of the steel box girder of the suspension bridge[J].Chinese and Forign Highway,2002(2):36-38.(in Chinese))
[7]李俊峰.基于有限元法的大跨度索桥钢结构受力[J].公路工程,2018,4(2):215-219.(LI Jun-feng.Analysis of the span cable steel structure based on finite element method[J].Highway Engineering,2018,4(2):215-219.(in Chinese))
[8]王达,谢巍,杨琴,等.基于有限元修正的悬索桥加劲梁节段模型[J].交通科学与工程,2016,32(2):35-40.(WANGDA,XIE Wei,YANG Qin,et al.Stiffening girder section model of the suspension bridge based on finite element updating[J].Journal of Transport Science and Engineering,2016,32(2):35-40.(in Chinese))
[9]潘永仁,范立础.大跨度悬索桥加劲梁架设过程中的倒拆分析法[J].同济大学学报:自然科学版,2001,29(5):510-514.(PAN Yong-ren,FAN Li-chu.Reverse disassembly analysis method in the erection of stiffening girder of long-span suspension bridge[J].Journal of Tongji University:Natural Sciences,2001,29(5):510-514.(in Chinese))
[10]孙胜江,王雷刚.悬索桥主索鞍可控状态自由滑移控制[J].桥梁建设,2010(1):67-70.(SUN Sheng-jiang,WANGLei-gang.Controllable state control of free movement of tower saddle of suspension bridge[J].Bridge Construction,2010(1):67-70.(in Chinese))
[11]何为,项贻强,徐心.悬索桥施工中索鞍顶推的小步快跑原则[J].浙江大学学报:工学版,2007,41(6):134-138.(HEWei,XIANG Yi-qiang,XU Xing.Frequent short steps saddle pushing principle in suspension bridge constructiong[J].Journal of Zhejiang University:Engineering Science,2007,41(6):134-138.(in Chinese))
[2]向忠富.桥梁施工控制技术[M].北京:人民交通出版社,2002.(XIANG Zhong-fu.Bridge construction control technology[M].Beijing:China Communications Press,2002.(in Chinese))
[3]孙胜江,姜军.悬索桥索塔允许偏位及主索鞍顶推分析[J].浙江大学学报,2007,41(1):135-138.(SUN Shengjiang,JIANG Jun.Analysis of tower’s allowable displacemen and main saddle’s pushing of suspension bridge[J].Journal of Zhejiang University,2007,41(1):135-138.(in Chinese))
[4]齐冬春,王昌将,沈锐利,等.悬索桥施工中鞍座顶推的研究[J].中国工程科学,2010,12(7):68-73.(Qi Dong-chun,WANG Chang-jiang,SHEN Rui-li,et al.Saddle pushing analysis in suspension bridge construction[J].Engineering Science in China,2010,12(7):68-73.(in Chinese))
[5]王喜良,岳振民.大跨悬索桥塔顶位移控制值分析[J].桥梁建设,2003(6):38-40.(WANG Xi-liang,YUE Zhengmin.Analysis of the top displacement control values of the long-span suspension bridge[J].Bridge construction,2003(6):38-40.(in Chinese))
[6]黄大元,周昌栋,宋官保,等.悬索桥钢箱梁工地焊接工艺与质量控制[J].中外公路,2002(2):36-38.(HUANG Dayuan,ZHOU Chang-dong,SONG Guan-bao,et al.Welding technology and quality control of the steel box girder of the suspension bridge[J].Chinese and Forign Highway,2002(2):36-38.(in Chinese))
[7]李俊峰.基于有限元法的大跨度索桥钢结构受力[J].公路工程,2018,4(2):215-219.(LI Jun-feng.Analysis of the span cable steel structure based on finite element method[J].Highway Engineering,2018,4(2):215-219.(in Chinese))
[8]王达,谢巍,杨琴,等.基于有限元修正的悬索桥加劲梁节段模型[J].交通科学与工程,2016,32(2):35-40.(WANGDA,XIE Wei,YANG Qin,et al.Stiffening girder section model of the suspension bridge based on finite element updating[J].Journal of Transport Science and Engineering,2016,32(2):35-40.(in Chinese))
[9]潘永仁,范立础.大跨度悬索桥加劲梁架设过程中的倒拆分析法[J].同济大学学报:自然科学版,2001,29(5):510-514.(PAN Yong-ren,FAN Li-chu.Reverse disassembly analysis method in the erection of stiffening girder of long-span suspension bridge[J].Journal of Tongji University:Natural Sciences,2001,29(5):510-514.(in Chinese))
[10]孙胜江,王雷刚.悬索桥主索鞍可控状态自由滑移控制[J].桥梁建设,2010(1):67-70.(SUN Sheng-jiang,WANGLei-gang.Controllable state control of free movement of tower saddle of suspension bridge[J].Bridge Construction,2010(1):67-70.(in Chinese))
[11]何为,项贻强,徐心.悬索桥施工中索鞍顶推的小步快跑原则[J].浙江大学学报:工学版,2007,41(6):134-138.(HEWei,XIANG Yi-qiang,XU Xing.Frequent short steps saddle pushing principle in suspension bridge constructiong[J].Journal of Zhejiang University:Engineering Science,2007,41(6):134-138.(in Chinese))