Parametric Analysis on Incrementally Launched Construction for Concrete Box Girder

Abstract:

The structural behavior of incrementally launched bridges in the construction stages depends on different parameters. Internal force of main girder is influenced by the dead load and stiffness of main girder, the length and stiffness of launching nose. Parametric analysis on the effect of internal force of an 8×60m-span concrete continuous box girder bridge was carried out. The results show that bending moment increases following the increase of weight and stiffness of corresponding segment of main girder. The phenomenon is even more obvious in the negative bending moment region of main girder segment nearby the launching nose. The bending moment of main girder reduces significantly when the stiffness ratio among launching nose and main girder is less than 0.15. While, the negative bending moment of main girder reduces significantly when the length ratio among launching nose and main span is more than 0.58.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 231-236
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.231
• Online since: November 2013
• Authors: Ya Jun Wang*, Jie Dai, Feng Jiang Qin
• Keywords: Box Girder, Bridge Engineering, Incrementally Launched Method, Launching Nose, Parametric Analysis

References

[1] Arturo N. Fontan, Jacobo M. Diaz, Aitor Baldomir. Improved Optimization Formulation for Launching Nose of Incrementally Launched Prestressed Concrete Bridges. Journal of Bridge Engineering, 2011, 16: 461-470.

DOI: 10.1061/(asce)be.1943-5592.0000169

[2] Marco Rosignoli. Nose-Deck Interaction in Launched Prestressed Concrete Bridges. Journal of Bridge Engineering, 1998, 3(4): 21-27.

DOI: 10.1061/(asce)1084-0702(1998)3:1(21)

[3] Marzouk, Mohamed. Application of computer simulation to construction of incremental launching bridges. Journal of Civil Engineering and Management, 2007(5): 27-36.

DOI: 10.3846/13923730.2007.9636416

[4] Jinfeng Wang, Jianping Lin, Chunlei Chen, et al. Simulation Analysis and Control Research of Long Multi-Span Composite Bridge with Incremental Launching Construction. ICCTP 2011: 3078-3090.

DOI: 10.1061/41186(421)306

[5] Lichu Fan. Bridge Engineering (Volume. 1). Beijing: China Communication Press, 2001: 184-186(In Chinese).

[6] MF Granata, P Margiotta, M Arici. A parametric study of curved incrementally launched bridges. Engineering Structures, 2013, 49: 373–384.

DOI: 10.1016/j.engstruct.2012.11.007

[7] Saptarshi Sasmal, K. Ramanjaneyulu. Transfer matrix method for construction phase analysis of incrementally launched prestressed concrete bridges. Engineering Structures, 2006, 28: 1897–(1910).

DOI: 10.1016/j.engstruct.2006.03.017