|
|
|
| Based on Energy-Variational Principle Derived Moment Amplified Coefficient of Tied Arch Rib |
| NI Ying-sheng, XU Dong |
| Department of Bridge Engineering, Tongji University, Shanghai 200092, China |
|
|
|
|
Abstract The arch rib, tie beam, and rod of the tied arch are considered common forces. According to the characteristics of these forces, the calculation equation of the moment augment factor of the tied arch is derived. The equation is based on the energy variational principle. The calculated results of the derived equation and the current bridge code are compared with the project example. For examples 1 and 2, the difference in calculation results between the derived practical equations and naked-arch simplified equivalent straight bar under the existing bridge specification is 12.9% to 24.3% before simplification. After simplification, the calculation results of the derived equation deviates by about 1%. The derived equation is comparatively economic and practical because the current bridge code is calculated according to the nude arch. The moment-amplified factor increases with increasing axial force and is related to the constraint and load form. The moment augment factor of the eccentric compress bar and arch rib in the arch structure exhibits substantial difference.
|
|
Received: 20 July 2014
|
| Fund:Supported by the National Natural Science Foundation of China (No.51178335) |
|
|
|
[1] Xiang Hai-fan. Conceptual Design of Bridges[M]. Beijing:China Communications Press, 2011. (in Chinese)
[2] LIU Zhao,LÜ Zhi-tao. Comparative Study on Structure of Vertical and Inclined Hangers Tied Arch[J]. China Civil Engineering Journal. 2000, 33(5):63-67. (in Chinese)
[3] JTG D62-2004. Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and CuLverts[S]. (in Chinese)
[4] TONG G S. WANG J P. Column Effective Lengths Considering Inter-story and Inter-column Interactions in Sway-permitted Frames[J]. Journal of Constructional Steel Research, 2006,62(5):413-423.
[5] HELLESLAND J. Mechanics and Effective Lengths of Columns with Positive and Negative end Restraints[J]. Engineering Structures, 2007, 29(12). 3464-3474.
[6] TIKKA T K. Examination of Second-order Effects in Structural Concrete Columns and Braced Frames[D]. Manitoba, Canada:University of Manitoba, 2001.
[7] JU S H. Statistical Analyses of Effective Lengths in Steel Arch Bridges[J]. Computers & Structures, 2003, 81, (14):1487-1497.
[8] Xiang Hai-fan. Structure Theory of Advanced Bridge[M]. Beijing:China Communications Press, 2001. (in Chinese)
[9] JU Jin-san, GUO Yan-lin, LIU Yu-qing. The Secondary Buckling Behavior of Elastic Arch[J]. Engineering Mechanics, 2002, 19(4):109-112. (in Chinese)
[10] ZHANG Hong-wu. Sparametric Variational Principle and Analysis of material and structurale[M]. Beijing:Science Press, 2010.(in Chinese)
[11] JIN Cheng-di. Girder and Arch Combination Bridge of Prestressed Concrete[M]. Beijing:China Communications Press, 2001. (in Chinese)
[12] HUANG Nai-qing. Study on the Eccentricity Magnifier of Reinforced Concrete Arch Bridge[D]. Hefei:Hefei University of Technology, 2009. (in Chinese) |
| [1] |
CHANG Zhu-gang, WANG Lin-kai, XIA Fei-long. Fluid-structure Interaction Numerical Simulation of Bridge Wind-induced Vibration Based on CV Newmark-β Method[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 28-37. |
| [2] |
XU Bai-shun, YAO Chao-yi, YAO Ya-dong, QIAN Yong-jiu, MA Ming. Carbon Fiber Reinforced Polymer-to-steel Interfacial Stress Parameter Sensitivity Based on Viscoelastic Constitutive[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 20-27. |
| [3] |
WEN Cheng, ZHANG Hong-xian. Influence of Material Time-dependent Performance on the Cantilever Construction of PSC Box Girder Bridge[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 38-44. |
| [4] |
LU Guan-ya, WANG Ke-hai, ZHANG Pan-pan. Seismic Design and Evaluation Methods for Small-to-Medium-Span Highway Girder Bridges Based on Machine Learning and Earthquake Damage Experience[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 24-37. |
| [5] |
YANG Yi-ming, PENG Jian-xin, ZHANG Jian-ren. Random Field Parameter Estimation of Service Bridge Component and Comparative Analysis of Estimation Methods[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 38-49. |
| [6] |
ZHAN Jian, SHAO Xu-dong, QU Wan-tong, CAO Jun-hui. Multi-parameter Fatigue Analysis of a Steel-super Toughness Concrete Lightweight Composite Bridge Deck[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 50-59. |
|
|
|
|
2015, Vol. 9 
