Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch Bridges
With the continuous construction of 500 m concrete-filled steel-tube (CFST) arch bridges such as the Bosideng Yangtze River Bridge and the Hejiang Changjiang Highway Bridge, the deviation between the dead pressure line and the arch axis produced by extant arch axis optimization methods increases. Th...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/7235656 |
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| _version_ | 1849414489750896640 |
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| author | Xuesong Zhang Ningyi Liang Xiaohong Lu Anbang Gu Jidong Shan |
| author_facet | Xuesong Zhang Ningyi Liang Xiaohong Lu Anbang Gu Jidong Shan |
| author_sort | Xuesong Zhang |
| collection | DOAJ |
| description | With the continuous construction of 500 m concrete-filled steel-tube (CFST) arch bridges such as the Bosideng Yangtze River Bridge and the Hejiang Changjiang Highway Bridge, the deviation between the dead pressure line and the arch axis produced by extant arch axis optimization methods increases. Therefore, an arch axis optimization method for long-span CFST arch bridges with a truss section must be designed. Following the optimization of the truss arch axis, this study develops the minimum section eccentricity method that aims to optimize the arch axis of long-span CFST arch bridges. To minimize the main tube eccentricity of the truss arch, the bending moment of the main tubes is reduced by applying the main tube eccentricity method iteratively in a finite element model. Afterward, a smooth and reasonable arch axis is fitted by applying a cubic spline interpolation function in MATLAB. The entire optimization procedure is performed using the Bosideng Yangtze River Bridge as an example. Compared with that of optimal arch axis line types (e.g., parabola and catenary) and other traditional arch axes, the bending moment of main tubes optimized by the proposed method is substantially lower and more uniformly distributed along the arch axis span. The mechanical properties of the finished bridge, including its strength, stiffness, and stability, are all improved, thereby verifying the feasibility of using the proposed method to optimize the arch axis of CFST arch bridges with a truss section. |
| format | Article |
| id | doaj-art-7314111fb03b45868c680d07b73daa88 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-7314111fb03b45868c680d07b73daa882025-08-20T03:33:50ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/72356567235656Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch BridgesXuesong Zhang0Ningyi Liang1Xiaohong Lu2Anbang Gu3Jidong Shan4School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaNingbo Communications Planning Institute Co., Ltd., Ningbo 315192, ChinaWith the continuous construction of 500 m concrete-filled steel-tube (CFST) arch bridges such as the Bosideng Yangtze River Bridge and the Hejiang Changjiang Highway Bridge, the deviation between the dead pressure line and the arch axis produced by extant arch axis optimization methods increases. Therefore, an arch axis optimization method for long-span CFST arch bridges with a truss section must be designed. Following the optimization of the truss arch axis, this study develops the minimum section eccentricity method that aims to optimize the arch axis of long-span CFST arch bridges. To minimize the main tube eccentricity of the truss arch, the bending moment of the main tubes is reduced by applying the main tube eccentricity method iteratively in a finite element model. Afterward, a smooth and reasonable arch axis is fitted by applying a cubic spline interpolation function in MATLAB. The entire optimization procedure is performed using the Bosideng Yangtze River Bridge as an example. Compared with that of optimal arch axis line types (e.g., parabola and catenary) and other traditional arch axes, the bending moment of main tubes optimized by the proposed method is substantially lower and more uniformly distributed along the arch axis span. The mechanical properties of the finished bridge, including its strength, stiffness, and stability, are all improved, thereby verifying the feasibility of using the proposed method to optimize the arch axis of CFST arch bridges with a truss section.http://dx.doi.org/10.1155/2019/7235656 |
| spellingShingle | Xuesong Zhang Ningyi Liang Xiaohong Lu Anbang Gu Jidong Shan Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch Bridges Advances in Civil Engineering |
| title | Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch Bridges |
| title_full | Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch Bridges |
| title_fullStr | Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch Bridges |
| title_full_unstemmed | Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch Bridges |
| title_short | Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch Bridges |
| title_sort | optimization method for solving the reasonable arch axis of long span cfst arch bridges |
| url | http://dx.doi.org/10.1155/2019/7235656 |
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