Sensitive factors research for track-bridge interaction of Long-span X-style steel-box arch bridge on high-speed railway

Abstract

X-style arch bridge on high-speed railways (HSR) is one kind of complicated long-span structure, and the track-bridge interaction is essential to ensure the safety and smoothness of HSR. Taking an X-style steel-box arch bridge with a main span of 450 m on HSR under construction for example, a new integrative mechanic model of rail-stringer-cross beam-suspender-pier-foundation coupling system was established, adopting the nonlinear spring element simulating the longitudinal resistance between track and bridge. The transmission law of continuous welded rail (CWR) on the X-style arch bridge was researched, and comparative study was carried out to discuss the influence of several sensitive factors, such as the temperature load case, the longitudinal resistance model, the scheme of longitudinal restraint conditions, the introverted inclination of arch rib, the stiffness of pier and abutment and the location of the rail expansion device. Calculating results indicate that the longitudinal resistance has a significant impact upon the longitudinal forces of CWR on this kind of bridge, while the arch rib’s inclination has little effect. Besides, temperature variation of arch ribs and suspenders should be taken into account in the calculation. Selecting the restraint system without longitudinally-fixed bearing and setting the rail expansion devices on both ends are more reasonable.

Keywords

high-speed railway / track-bridge interaction / X-style steel-box arch bridge / continuous welded rail

References

[1] GuangZ-y, GaoH-anRailroad continuous welded rails [M], 2005BeijingChina Railway Press1-13

[2] DaiG-l, HuN, LiuW-shuo. The recent improvement of high-speed railway bridges in China [C]. 34th IABSE Symposium 2010, 2010VeniceHemming Group Limited168-169

[3] LimN H, ParkN H, KangY J. Stability of continuous welded rail track [J]. Computers & Structures, 2003, 81(22/23): 2219-2236

[4] RugeP, BirkC. Longitudinal forces in continuously welded rails on bridge decks due to nonlinear track-bridge interaction [J]. Computers & Structures, 2007, 85(11): 458-475

[5] CalçadaR, DelgadoR, MatosA C E, GoicoleaJ M, GabaldónFTrack-bridge Interaction on High-Speed railways [M], 2009LondonTaylor & Francis Group63-94

[6] JiangJ-zhou. Additional iongitudinal forces in continuously welded rails and their transmission on railway bridges [J]. China Railway Science, 1998, 19(2): 67-75

[7] XuQ-yuanStatic and dynamic 3D finite element analysis of additional longitudinal forces transmission between CWR and high-speed railway bridges [D], 2010ChangshaCentral South University

[8] DaiG-l, YanBin. Longitudinal forces of continuously welded track on high-speed railway cable-stayed bridge considering impact of adjacent bridges [J]. Journal of Central South University, 2012, 19(8): 2348-2353

[9] German Standard DS899/59. Special procedures on railway Shinkansen bridge [S]. Bridge Research Institute of Railway Bridge Authority, 1985

[10] UIC Code 774-3. Track/Bridge Interaction Recommendations for Calculation [S]. International Union of Railways, 2001

[11] Code for Design of Railway CWR (draft) [S]. Beijing: Institute of Economic Planning Ministry of Railways, 2008. (in Chinese)

[12] TianZ-chuResearch on the key technology of construction control and dynamic characteristics of the long-span steel-box arch bridge [D], 2010ChangshaCentral South University

[13] ZhaiJ-ping. Analysis on the dynamic properties of Zhaoqing Xijiang Bridge[J]. Journal of Railway Science and Engineering, 2011, 8(3): 13-17

[14] OkeloR, OlabimtanA. Nonlinear rail-structure interaction analysis of an elevated skewed steel guideway [J]. Journal of Bridge Engineering, 2011, 16(3): 392-399

[15] DaiG-l, LiuW-s, LiL-ying. Study of the live load for small-and medium-span bridges of high-speed railways [J]. China Civil Engineering Journal, 2012, 45(10): 161-168

[16] Code for design of high speed railway [S]. Beijing: Institute of Economic Planning Ministry of Railways, 2009. (in Chinese)

[17] XuQ-y, ChenX-fang. Additional longitudinal forces transmission between bridges and continuously welded rails with small resistance fasteners [J]. Journal of Traffic and Transportation Engineering, 2003, 3(1): 25-29

[18] LiuW-bing. Research on the key technologies for design of continuous welded rails (CWR) on large-span basket handle arch bridge [J]. Journal of Railway Engineering Society, 200967-70