Citation

Liu C, Xu D. Balt. J. Road Bridge Eng. 2010; 5(2): 98-103.

Copyright

(Copyright © 2010, Vilnius Gediminas Technical University, Publisher Technika)

DOI

unavailable

PMID

unavailable

Abstract

This article presents a space frame lattice model for the analysis of stress of entire cross-section of bridge. The authors focused on analyzing the relatively weaker position of stress in box-girder section, using as an example the Xintan Bridge over the Qijiang River in Chongqing, China. The Xintan Bridge has a continuous prestressed concrete rigid frame with 75+130+75 m span. They calculated and analyzed the shear stress and principle tensile stress of the box girder cross-section in this bridge, using an innovative layout method of mixed internal and external prestressed tendons. They conclude that the space frame lattice model is accurate for calculating the stress state of a bridge. This model can simulate the process of long-term cracking as well as deflection of large-span pre-stressed concrete girder bridges.