Calculation of Shrinkage Secondary Internal Force of CFST Arch Bridge(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2013年03期
- Page:
- 120-126
- Research Field:
- Publishing date:
Info
- Title:
- Calculation of Shrinkage Secondary Internal Force of CFST Arch Bridge
- Author(s):
- LAI Xiu-ying; CHEN Bao-chun
- School of Civil Engineering, Fuzhou University
- Keywords:
- concrete-filled steel tubular arch bridge; shrinkage; secondary internal force; analytical method; finite element method
- PACS:
- -
- DOI:
- -
- Abstract:
- Aimed at the shrinkage of core concrete causing secondary internal force in the concretefilled steel tubular (CFST) fixed arch, according to the structural properties of CFST arch, two methods were proposed to calculate the shrinkage secondary internal force, including analytical method and finite element method. The two methods were used to calculate the shrinkage secondary internal force of nine CFST arch bridges. The results show that both the two methods can be used to calculate the shrinkage secondary internal force of CFST arch bridge. But the results from the equivalent decreasing temperature of 15 ℃20 ℃ in analytical method are larger more 50% than the results calculated directly from the finite element method. If the analytical method of equivalent decreasing temperature will be used, the equivalent decreasing temperature values maybe research in the future.
Last Update: 2014-12-18