|Table of Contents|

Cross Section Selection of Concrete-filled Steel Tube Pier Columns(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2020年01期
Page:
94-101
Research Field:
Publishing date:

Info

Title:
Cross Section Selection of Concrete-filled Steel Tube Pier Columns
Author(s):
ZHANG Guo-jing;  LIU Yong-jian;  JIANG Lei
( School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China)
Keywords:
bridge engineering;  selection of cross section;  compressive bending capacity;  concrete-filled steel tube pier column;  boundary eccentricity ratio
PACS:
TU318
DOI:
10.19815/j.jace.2018.10006
Abstract:
In order to obtain an easy way to operate optimal selection method for single limb cross section of concrete-filled steel tube(CFST)pier column, the research of section optimization was carried out by the means of three common cross sections in engineering, including circular, rectangular and rectangular double-skin steel tubes. The economic index named boundary eccentricity ratio which could represent the cross section compressive bending capacity based on the unified theory and the method of equivalent cross section was presented. The effects of hoop coefficient, rectangular cross section aspect ratio, rectangular hollow section hollowed out rate on the boundary eccentricity ratio and the economy of the three CFST cross sections were studied. The results show that with the increasing of hoop coefficient, rectangular cross section aspect ratio and rectangular hollow section hollowed out rate, the economy of rectangular and rectangular double-skin steel tube cross section is getting better. When hoop coefficient is greater than 0.8, rectangular cross section aspect ratio is greater than 2.0 and rectangular hollow section hollowed out rate is greater than 0.3, the influences of the three parameters on boundary eccentricity ratio are small. The boundary eccentricity ratio can describe the economy of single limb cross section of CFST pier column preferably. The preferred cross-section of the CFST pier column can be obtained by searching the boundary eccentricity ratio table under the condition of given material and internal force. This method has certain reference value to the real project.

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Last Update: 2020-01-13