Research on the Installation Lengths of Zero Block Concrete Segment in Prestressed Concrete Box-Girder Beams with Corrugated Steel Webs

Abstract:

In order to study the reasonable installation lengths of zero block concrete segment in prestressed concrete box-girder beams with corrugated steel webs, a numerical analysis on the length of different zero blocks in PC box girder beams with corrugated steel webs is made by the finite element software ANSYS. The influence of the installation lengths of zero block concrete segment on the structure control section's internal forces and deformation is discussed. The results indicate: the impact of length changes of zero block on box girder deflection is greater than its impact on internal forces; in terms of deflection, the displacement influence in quarter-section in middle span is the largest; and in terms of internal forces, the internal forces influence of the junction section formed by zero block concrete segment and beam segment with corrugated steel webs is the largest. According to the above results and the relevant information of constructed bridges, the reasonable setting length of zero block concrete segment has been provided, that the ratio L₀/L of installation lengths and span for zero block of box girder should be in the range of 0.05 to 0.10.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 1147-1153
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.1147
• Online since: May 2011
• Authors: Pin Zhao, Jian Shu Ye
• Keywords: Finite Element Analysis (FEA), Prestressed Concrete Box-Girder Beams with Corrugated Steel Webs, Reasonable Installation Lengths, Zero Block of Concrete Segment

References

[1] Yiyan Chen:Design and construction of prestressed concrete bridge with corrugated steel webs(China Communications Press, BeiJing 2009), in Chinese.

[2] Johnson R P, Cafolla J:Local Flange Bulking in Plate Girders with Corrugated Webs(Proc Instn Civ Engrs Struts & BldgVol. 123(May 1997), p.148–156).

[3] Lan Liu, Tiewan Cun:Design and Construction of BEN Gu bridge- Prestressed Concrete Box-Girder with corrugated steel webs in cantilever construction Vol. 3(1999), in Chinese.

[4] Hongjiang Li:Experimental Study and Analysis on Torsion an Distortion in Box-girder with Corrugated Steel Webs. (A Dissertation Submitted to Southeast University, Nanjing2003), in Chinese.

[5] Yuqing Liu:Steel-Concrete Hybrid Bridge(China Communications Press, BeiJing 2009), in Chinese.

[6] Chinese industrial standard. General Design Norm of Bridges and Culverts of Highway(JTG D60—2004) (China Communications Press, BeiJing 2004), in Chinese.