Ultimate Resistance of Unstiffened Tubular Joints
Publication: Journal of Structural Engineering
Volume 110, Issue 2
Abstract
Based on a large number of test results obtained from 747 specimens, an attempt is made to find out simple mathematical expressions that explain the resistances of tube‐to‐tube joints with circular hollow sections under axial brace loading. Multiple regression analysis is performed on a carefully established data base to obtain the best predictive equations. The proposed yield and ultimate strength equations are shown to be in good agreement with the test results, provided that the joints are not controlled by brittle failure. These equations are applicable for wide range of basic variables, which include the geometry and size of the joints, the yield stress and yield ratio of material and the axial stress in the chord. The resistance factors for the design for an ultimate limit state are calculated. It is shown that the standards of tolerance control and material selection and the dimensions of structures must be considered to determine the resistance factor appropriate to the design situations.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Akiyama, N., et al., “Experimental Study on Strength of Joints in Steel Tubular Structures,” (in Japanese) Journal of Society of Steel Construction, Tokyo, Japan, Vol. 10, No. 102, June, 1974, pp. 37–68.
2.
Draper, N. R., and Smith, H., “An Introduction to Nonlinear Estimation,” Applied Regression Analysis, 1st ed., John Wiley and Sons, Inc., New York, N.Y., 1966.
3.
Kanatani, H., “Experimental Study of Welded Tubular Connection (Part 2),” (in Japanese) Transactions, Architectural Institute of Japan, Tokyo, Japan, No. 109, Mar., 1965, pp. 42–52.
4.
Koning, C. H. M., and Wardenier, J., “The Static Strength of Welded CHS K‐Joints,” Stevin Report 6‐81‐13, Stevin Laboratory, Delft University of Technology, Delft, The Netherlands, July, 1981.
5.
Kurobane, Y., “Welded Truss Joints of Tubular Structural Members,” Memoirs, Faculty of Engineering, Kumamoto University, Kumamoto, Japan, Vol. 12, No. 1, 1964, pp. 1–39.
6.
Kurobane, Y., Makino, Y., and Mitsui, Y., “Ultimate Strength Formulae for Simple Tubular Joints,” Document XV‐385‐76, International Institute of Welding, London, England, May, 1976, pp. 1–22.
7.
Kurobane, Y., Makino, Y., and Mitsui, Y., “Ultimate Strength Design Formulae for Simple Tubular Joints,” Final Report, 10th Congress of International Association for Bridge and Structural Engineering, Tokyo, Japan, Sept., 1976, pp. 229–234.
8.
Kurobane, Y., Makino, Y., and Mitsui, Y., “Re‐analysis of Ultimate Strength Data for Truss Connections in Circular Hollow Sections,” Document XV‐461‐80, International Institute of Welding, London, England, July, 1980, pp. 1–42.
9.
Kurobane, Y., “Recent Developments in Tubular Joint Design,” presented at May 11–15, 1981, ASCE International Convention and Exposition, held at New York, N.Y. (Preprint 81‐002).
10.
Kurobane, Y., “New Developments and Practices in Tubular Joint Design,” Document XV‐488‐81 and XIII‐1004‐81, International Institute of Welding, London, England, May, 1981, pp. 1–57.
11.
Kurobane, Y., Atsuta, T., and Toma, S., “Research in Japan in the Stability of Circular Tubes,” presented at the March 30–31, 1982, Structural Stability Research Council, Annual Technical Session and Meeting, held at New Orleans, La.
12.
Makino, Y., Kurobane, Y., and Minoda, Y., “Design of CHS X and T‐Joints under Tensile Brace Loading,” Document XV‐487‐81, International Institute of Welding, London, England, May, 1981, pp. 1–12.
13.
Makino, Y., Kurobane, Y., and Ochi, K., “Reliability‐Based Design Criteria for Tubular X‐Joint under Tension,” Summary Papers, Annual Conference of Architectural Institute of Japan, Sendai, Japan, 1982.
14.
Ochi, K., Kurobane, Y., and Makino, Y., “Further Tests on CHS K‐Joints with Various d/D Ratios,” Technical Reports, Kumamoto University, Kumamoto, Japan, Vol. 30, No. 3, Oct., 1981, pp. 119–124.
15.
Ohtake, F., et al., “Static and Fatigue Strength of High Strength Steel Tubular Joints for Offshore Structures,” Proceedings, Offshore Technology Conference, OTC 3254, May, 1978, pp. 1747–1755.
16.
Ravindra, M. K., and Galambos, T. V., “Load and Resistance Factor Design for Steel,” Journal of Structural Division, ASCE, Vol. 104, No. ST9, Proc. Paper 14008, Sept., 1978, pp. 1337–1353.
17.
Reber, J. B., “Ultimate Strength Design of Tubular Joints,” Journal of the Structural Division, ASCE, Vol. 99, No. ST6, Proc. Paper 9793, June, 1973, pp. 1223–1240.
18.
Satake, S., et al., “Study on the Brittle Fracture Characteristics of Tubular Joints Used in Offshore Structures,” Technical Review, Mitsubishi Heavy Industries, Ltd., Tokyo, Vol. 14, No. 4, Feb., 1977, pp. 1–8.
19.
Sparrow, K. D., and Stamenkovic, A., “Experimental Determination of the Ultimate Static Strength of T‐Joints in Circular Hollow Steel Sections Subjected to Axial Load and Moment,” Joints in Structural Steelwork, Pentech Press, London, England, 1981, pp. 4.42–4.59.
20.
Subcommission XV‐E, “Design Recommendations for Hollow Section Joints—Predominantly Statically Loaded,” Document XV‐491‐81 and XIII‐1003‐81, International Institute of Welding, London, England, 1981, pp. 1–37.
21.
Togo, T., “Experimental Study on Mechanical Behavior of Tubular Joints,” (in Japanese, Summarized in part in Refs. 25 and 26) thesis presented at Osaka University, at Osaka, Japan, in 1967, in partial fulfillment of the requirements for the degree of Doctor of Engineering.
22.
Toprac, A. A., Johnston, L. P., and Noel, J., “Welded Tubular Connections: An Investigation of Stresses in T‐Joints,” Welding Journal, Vol. 45, No. 1, Jan., 1966, pp. ls–12s.
23.
Trezos, C., “Probabilistic Investigation of the Ultimate Strength of Welded K Connections,” (in French) Construction Metallique, Paris, Vol. 15, No. 1, 1978, pp. 37–57.
24.
Wardenier, J., “Hollow Section Joints,” 1st ed., Delft University Press, Delft, The Netherlands, 1982.
25.
Washio, K., Togo, T., and Mitsui, Y., “Experimental Study on Local Failure of Chords in Tubular Truss Joints (I),” Technology Reports, Osaka University, Osaka, Japan, Vol. 18, No. 850, 1968, pp. 559–581.
26.
Washio, K., Togo, T., and Mitsui, Y., “Experimental Study on Local Failure of Chords in Tubular Truss Joints (II),” Technology Reports, Osaka University, Osaka, Japan, Vol. 19, No. 874, 1969, pp. 249–262.
27.
Yura, J., Zettlemeyer, N., and Edwards, I. F., “Ultimate Capacity of Circular Tubular Joints,” Journal of the Structural Division, ASCE, Vol. 107, No. ST10, Proc. Paper 16600, Oct., 1981, pp. 1965–1984.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 110 • Issue 2 • February 1984
Pages: 385 - 400
Copyright
Copyright © 1984 ASCE.
History
Published online: Feb 1, 1984
Published in print: Feb 1984
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.