Title:
Curved Circular Hollow Section (CHS) Steel Struts Infilled with Higher-Strength Concrete
Author(s):
Mohsen Ghasemian and Lewis C. Schmidt
Publication:
Structural Journal
Volume:
96
Issue:
2
Appears on pages(s):
275-281
Keywords:
high-strength concretes; slenderness ratio; structural analysis
DOI:
10.14359/619
Date:
3/1/1999
Abstract:
There has been little work reported on the ultimate load capacity of curved steel struts subjected to compressive load. To investigate the general behavior of such struts, a series was tested of 18 circular cold-formed curved circular hollow section (CHS) steel tubes infilled with higher- strength concrete of 70 MPa compressive strength. The test specimens were pinned at both ends and loaded in compression. Three different radii of initial curvature, 2, 4, and 10 m, were selected to examine the effects of small and large initial curvatures. A relatively simple method to calculate the strength of the composite curved steel tubes is presented. The method uses the intersection of simplified and separate inelastic and elastic behavior analyses. Agreement between measured and calculated strengths is generally good.