Experimental and numerical study of a pipe in pipe force limiting device (PPFLD)

Document Type : Original Article

Authors

1 Department of Civil Engineering, Faculty of Engineering, Urmia Branch, Islamic Azad University, Urmia, Iran

2 Sciens , Faculty of Engineering , Civil Engineering Department , Urmia University , Urmia , Iran .

3 Civil Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran

Abstract

The buckling behavior of compression member has a decisive role in the collapse behavior of a structure. The buckling and sudden capacity loss of the compression member can be prevented using a proposed PPFLD and the brittle post-buckling behavior of the compression member can be converted into ductility behavior. The PPFLD consists of two pipes, one of which is placed into the other pipe and the axial force applied to the inner pipe. Thus, the outer pipe operates as a casing for the inner pipe. The present study investigated a number of experimental specimens. Next, numerical analysis of these specimens has been done using finite element software. Further, the behavior of the PPFLD have been investigated under important parameters such as the gap between two pipes, the inner pipe slenderness coefficient, and the ratio of outer pipe length to inner pipe length, by studying more numerical specimens. The results indicate this PPFLD is an effective, simple and economical method to prevent the buckling of compression member and can lead to a favorable increase in the bearing and deformability capacity of the compression member. The bearing capacity of this PPFLD is inversely related to the size of the gap, and is directly related to the ratio of the outer pipe length to inner pipe length. The bearing capacity of the member will increase significantly, if the gap size is less than 43% of the inner pipe's gyration radius, and the the ratio of the outer pipe length to inner pipe length is greater than 55%. This is more sensible especially when the outer pipe covers the entire length of the inner pipe. The proposed PPFLD has the potential of eliminating the buckling of compression member and providing adequate and sufficient restraints to make yielding at compression member with different slenderness.

Keywords

Main Subjects

References

[1] ANSI/AISC 341-16. (2016), Seismic Provisions for Structural Steel Buildings, Chicago: American Institute of Steel Construction.
[2] Wu, B., & Mei, Y. (2015). Buckling mechanism of steel core of buckling-restrained braces. Journal of Constructional Steel Research, 107, 61-69.
[3] Wu, B., Lu, J., Mei, Y., & Zhang, J. (2017). Buckling mechanism and global stability design method of buckling-restrained braces. Journal of Constructional Steel Research, 138, 473-487.
[4] Lu, J., Wu, B., & Mei, Y. (2018). Buckling mechanism of steel core and global stability design method for fixed-end buckling-restrained braces. Engineering Structures, 174, 447-461.
 [5] Iwata, M., Katoh, T. and Wada, A., (2001). “Performance Evaluation of Buckling-Restrained Braces on Damage Controlled Structures: Parts 1 and 2”. In Summaries of technical papers of annual meeting, Architectural Institute of Japan, Structural Engineering Section (III), 658-662. Tokyo: Architectural Institute of Japan. (in Japanese).
[6] Ozcelik, R., Dikiciasik, Y., & Erdil, E. F. (2017). The development of the buckling restrained braces with new end restrains. Journal of Constructional Steel Research, 138, 208-220
 [7] Ding, Y., Zhang, Y., & Zhao, J. (2009). Tests of hysteretic behavior for unbonded steel plate brace encased in reinforced concrete panel. Journal of Constructional Steel Research, 65(5), 1160-1170.
[8] Iwata, M., & Murai, M. (2006). Buckling‐restrained brace using steel mortar planks; performance evaluation as a hysteretic damper. Earthquake engineering & structural dynamics, 35(14), 1807-1826.
[9] Satake N., Mase S., Terada T., Isoda K., (2001). “Development of unbounded brace damper restrained by channel section steel (Part 2 static loading test using full-scale specimens)”, In: Summaries of technical papers of annual meeting, Architectural Institute of Japan. Volume 9, 665- 666. Tokyo: Architectural Institute of Japan.
 [10] Mateus, J. A. S., Tagawa, H., & Chen, X. (2019). Buckling-restrained brace using round steel bar cores restrained by inner round steel tubes and outer square steel tube. Engineering Structures, 197, 109379.
[11] Dehghani, E., Babaei, N., & Zarrineghbal, A. (2019). Investigation of the Distribution of Cumulative Ductility Demand Parameter in Various Storeys of Buckling Restrained Braced Frames. Journal of Rehabilitation in Civil Engineerin, 7(3), 148-161.
 [12] Md. Soebur Rahman, Mahbuba Begum, Raquib Ahsan, (2016), Comparison between Experimental and Numerical Studies of Fully Encased Composite Columns, International Journal of Structural and Construction Engineering, Vol:10, No:6.
[13] Hanaor, A., & Schmidt, L. C. (1980). Space truss studies with force limiting devices. Journal of the Structural Division, 106(11), 2313-2329.
[14] El-Sheikh, A. (1999). Effect of force limiting devices on behaviour of space trusses. Engineering structures, 21(1), 34-44.
[15] Kim, C. H., Chae, W. T., Oh, Y. S., & Kim, C. Y. (2013). A Study on the Development of Force Limiting Devices (FLD) which Induce Yielding before Elastic Buckling. Journal of Korean Society of Steel Construction, 25(3), 279-287. (in Korean).
[16] Oh, Y. S., Kim, C. H., Kim, C. Y., & Chae, W. T. (2013). A Study on the Post-Buckling Behavior of Slit Type FLD (Force Limiting Device). Journal of Korean Society of Steel Construction, 25(5), 475-486. (in Korean).
[17] Kim, C.H., Chae, W.T., and Do, C.G. (2014). “A Study on the Development of the Force Limiting Device with Folded types” In: Annual Conference Korean Society of Steel Construction, KSSC. Korea, 113-114 (in Korean).
[18] Kim, C. H., & Chae, W. T. (2015). A Study on the Development of Force Limiting Devices of Cross-Section Cutting Types. Journal of Korean Society of Steel Construction, 27(1), 77-85.
 [19] Poursharifi, M., Abedi, K., & Chenaghloua, M. (2017). 05.32: Experimental and numerical study on the collapse behavior of an all‐steel accordion force limiting device. ce/papers, 1(2-3), 1315-1324.
[20] Mukai, H., Wada, A., Watanabe, A., & Iwata, M. (1993). Ductile truss structures and scaled model experiments. In Space structures 4 (pp. 1841-1850).
[21] Riks, E. (1979). An incremental approach to the solution of snapping and buckling problems. International journal of solids and structures, 15(7), 529-551.

Files

History

  • Receive Date: 19 October 2019
  • Revise Date: 04 May 2020
  • Accept Date: 06 May 2020

Share

How to cite

Statistics