Sensitivity Analysis for Design Parameters of Cantilever Casting PC Box-Girder with Corrugated Steel Webs

Abstract:

In order to provide a theoretical basis for the alignment regulation of prestressed box-girder bridge with corrugated webs, so that the control for alignment can be more targeted. Optimization model of alignment regulation for cantilever constructed pre-stressed box-girder bridge with corrugated webs is proposed based on optimization principle. The sensitivity of alignment error, transverse stress of bottom plate and transverse deformation of corrugated web with respect to design parameters is analyzed during three classical construction stages. The results indicate that the concrete density, concrete elastic modulus, longitudinal and transverse pre-stress are key control parameters of alignment regulation; alignment error is not sensitive to the change of uniformly distributed temporary loads; the cantilever state at one fourth span is most sensitive to the change of design parameters.

• Periodical: Advanced Materials Research (Volumes 430-432)
• Pages: 1546-1550
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.430-432.1546
• Online since: January 2012
• Authors: Ke Bin Jiang, Yong Ding, Ya Wen Liu, Ping Wang, Feng Zheng
• Keywords: Box Girder, Construction Regulation, Corrugated Steel Web, Sensitivity Analysis

References

[1] Mohamed Elgaaly: Journal of Structural Engineering. Vol. 122 (1996), pp.390-398.

[2] Mohamed Elgaaly, Anand Seshadri, Robert W. Hamilton: Journal of Structural Engineering. Vol. 123 (1997), pp.772-782.

[3] CAI Yi, XING Yan, HU Dan: On Sensitivity Analysis [J]. Journal of Beijing Normal University (Natural Science). Vol. 44 (2008), pp.9-15 (in Chinese).

[4] Ascough II H C, Green T R, Ma L, et al: Key Criteria and Selection of Sensitivity Analysis Methods Applied to Natural Resource models [C]. Melbourne, Australia: Modsim International Congress on Modeling and Simulation, Modeling and Simulation Society of Australia and New Zealand, (2005).

[5] LUO Peng-cheng, FU Pan-feng: Review on Weapons and Equipment Sensitivity Analysis Methods [J]. Computer Engineering and Design. Vol. 29 (2008), pp.5546-5549 (in Chinese).

[6] ZHANG Zhi-cheng: Sensitivity Analysis of Structural Design Parameters for Construction Control Bridge [J]. Journal of Wuhan University of Technology. Vol. 28 (2006), pp.77-81 (in Chinese).

[7] ZHU Li-ming, LIU Hua: Cause Analysis and Countermeasures for Longitudinal Cracks in Bottom Slab of Prestressed Concrete Continuous Box Girder with Triple Webs [J]. Bridge Construction. 2005, (B06), pp.114-116 (in Chinese).

[8] WAN Shui, TANG Yi, WANG Jin-song. Experimental Test of Structural Property of Prestressed Concrete Box-girder with Corrugated Steel Webs[J]. Journal of Nanjing University of Science and Technology. Vol. 28 (2004), pp.498-501 (in Chinese).