Hysteresis Behavior of Square Tube Columns to H-Beam Connections with Vertical Stiffeners

Abstract

This paper deals with confirming the usability of a new connection method for steel moment-resisting frames. The connections are strengthened with vertical stiffeners to connect square tube columns and H-shaped beams. Two test methods were selected with experimental parameters given as details. The first test is performed under symmetrical loading. Beams are simply supported on both ends and test load is applied to the top of the column. The second test is performed under anti-symmetric loading. The shape of test specimens is cruciform, with a beam and a column. The top end and base of the column are simply supported, and load is applied to both ends of the beam. Test results are summarized to investigate structural performances of the connection. Nonlinear FE analysis using ANSYS for moment-resisting frames was performed to confirm the test results. It was found that all specimens had sufficient capacities exceeding the full plastic strength of beam. Therefore, the connections strengthened with vertical stiffeners were successfully verified to have possibility as a new connection method for steel moment-frames.

Keywords

new connection method cyclic loading test vertical stiffener outer diaphragm fillet weld

Get full access to this article

View all access options for this article.

References

Akiyama

Yamada

Matsumoto

Matsuoka

Ohtake

and Sugimoto

(2002). “Transition from ductile to brittle fracture of full scale beam-to-column connections caused by temperature”, Transaction of Architectural Institute of Japan, No. 522, pp. 105–112.

Akiyama

Yamada

Matsumoto

Takeuchi

and Sugimoto

(2002). “Full scale shaking table test on ultimate resistance of advanced type of beam-to-column connections”, Transaction of Architectural Institute of Japan, No. 551, pp. 141–148.

ANSYS/Standard (1994). User's Manual, version 5.3, SAS IP, Inc.

Engehardh

M. D.

and Sabol

T.A.

(1998). “Reinforced steel moment connections with cover plate; benefits and limitations”, Structural Engineering, Vol. 20, No. 4–6, pp. 510–520.

AIJ (1997). “Full-scale test on plastic rotation capacity of steel wide-flange beams connected with square tube steel columns”, Committee on Steel Building Structures, The Kinki Branch of the Architectural Institute of Japan.

AIJ (1997). “Recommendations for design and construction of concrete filled steel tubular structures”, Architectural Institute of Japan.

Harada

Morita

Yamakuchi

and Ishii

(2000). “Experimental study on brittle fracture in beam-to-column connections (Influence of connection detail and material properties)”, Transaction of Architectural Institute of Japan, No. 535, pp. 141–148.

Kawano

Matsui

(1996). “New connections using vertical stiffeners between H-shaped beams and hollow or concrete-filled square tubular columns”, Proceedings of an Engineering Foundation Conference, pp. 172–185.

Kishi

Ahmed

Yabuki

and Chen

W.F.

(2001). “Nonlinear finite element analysis of top-and seat-angle with double web-angle connections”, Structural Engineering Mechanics, Vol. 12, No. 2, pp. 201–214.

10.

Kuwamura

Takagi

and Matsui

(2000). “Effects of welding heat input on brittle fracture of steel members”, Transaction of Architectural Institute of Japan, No. 531, pp. 157–164.

11.

Lee

Hung

J-H.

M-H.

Koo

E-S.

(2005). “Experimental study of cyclic seismic behavior of steel moment connections reinforced with ribs”, Structural Engineering, Vol. 131, No. 1, pp. 108–118.

12.

Nakagomi

Fujita

Minami

Lee

and Murai

(2002). “Study on beam-end details for the method of non-scallop on beam-to-column welded joints”, Transaction of Architectural Institute of Japan, No. 498, pp. 145–151.

13.

Tanuma

Fukasawa

and Kobayashi

(2000). “Study on fatigue characteristics of cross welded joints of high strength steel”, Transaction of Architectural Institute of Japan, No. 531, pp. 149–156.

14.

Zekioglu

Mozaffarian

and Uang

(1997). “Moment frame connection development and testing for the city of Hope National Medical Center”, Buildings to Last: Proceeding of Structures Congress XV, ASCE, Portland, Ore, pp. 100–104.