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Bearing Capacities of Different-Diameter Concrete-Filled Steel Tubes under Axial Compression
Joint Authors
Li, Zhenbao
Wang, Wenjing
Tang, Zhenyun
Ma, Hua
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-12-26
Country of Publication
Egypt
No. of Pages
10
Abstract EN
The bearing capacities of concrete-filled steel tubes are normally derived through experiments with small-scale specimens, but it is uncertain whether such derivations are appropriate for the much larger components used in practical engineering.
This study therefore investigates the effect of different diameters (219, 426, 630, and 820 mm) on the axial compression of short concrete columns in steel (Q235) tubes.
It is found that the peak nominal stress decreases with increasing specimen size and that the axial bearing capacity is determined by three separate components: the cylinder compressive strength of the concrete, the improvement in strength due to the confining effect of the steel tube, and the longitudinal strength of the steel tube.
At peak load, increases in the specimen diameter reduce the hoop stresses in the steel tube, thereby reducing the strengthening effect of confinement.
Vertical stress in the steel tube is increased with diameter; therefore, the axial bearing capacity of the steel tube is directly related to the specimen size.
Size effect coefficients for these three aspects of bearing capacity are defined and used to develop a size-dependent model for predicting the axial bearing capacity of large, concrete-filled steel tubes.
The model is then validated against experimental data.
American Psychological Association (APA)
Wang, Wenjing& Tang, Zhenyun& Li, Zhenbao& Ma, Hua. 2016. Bearing Capacities of Different-Diameter Concrete-Filled Steel Tubes under Axial Compression. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1096420
Modern Language Association (MLA)
Wang, Wenjing…[et al.]. Bearing Capacities of Different-Diameter Concrete-Filled Steel Tubes under Axial Compression. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1096420
American Medical Association (AMA)
Wang, Wenjing& Tang, Zhenyun& Li, Zhenbao& Ma, Hua. Bearing Capacities of Different-Diameter Concrete-Filled Steel Tubes under Axial Compression. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1096420
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096420