The confinement effect is influenced by the shape of the cross section, the thickness of the steel profile, the type of loading, the slenderness of the composite column
, and the strength of the materials used.
For the composite column
with the thickness of 1.8 and 3.0 mm, the parameter R is 0.80 and 0.58, respectively, which is lower than the limit of 0.9 .
Fourteen specimens were tested to investigate the effect of the steel tube shape and wall thickness on the ultimate strength of the composite column
. Length of all columns was same.
One composite column
(100 personnel) of army and air force had reached Supaul and one Saharsa in the state and three more columns mobilised from Sukna have gone to Katihar, the statement said, giving details of the operation mounted by the Centre.
Similar to the common CFSTs, this composite column
exhibits excellent structural and constructional benefits (Pei 2005).
Results of dispersion analysis of composite column
load bearing capacity are summarized in Table 1.
With this, modules could then be used in numerous configurations to create classrooms, hostels or treatment wards, from just two components: a composite column
, which included ventilation slots to eliminate complicated opening window details and which neatly doubled as a ladder during assembly; and a modular plywood cassette, that would prop the frame before being lifted into place to form the roof.
HITEC has many group evaluations in various stages of completion, including seismic isolation and energy dissipation devices for bridges, proprietary earth-retaining systems, fiber-reinforced polymer composite systems for concrete structure repair and strengthening, composite column
wrap for seismic retrofit, alternate materials for dowel bars, and weigh-in-motion sensors.
In such a composite column
, an outer steel tube is used to replace longitudinal and transverse steel reinforcements in conventional reinforced concrete columns and to provide continuous confinement to concrete infilled.
All those research achievements confirmed that the composite column
has its feasibility in theoretical research and engineering practice, showing a great potential for more development.
AISC-360-16  chapter E and I2.2 have discussed a composite column
under compression, the coefficient "[c.sub.e]" of elasticity modulus was suggested as 0.4 in prior research [13, 21] representing the concrete's contribution to the stiffness of the entire section, and the coefficient is based on the combination level of steel and concrete.
This paper, and its associated website (http.//web.ukonline.co.uk/asccs2), collects together information for 1303 composite column
tests and compares the test results with EC4; some typical graphs are also included in this paper.