Steel and Composite Structures

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Experimental study of a pretensioned connection for modular buildings

  • Yu, Yujie (School of Civil Engineering, Central South University) ;
  • Chen, Zhihua (Department of Civil Engineering, Tianjin University) ;
  • Chen, Aoyi (Tianjin Architecture Design Institute)
  • Received : 2018.04.17
  • Accepted : 2019.04.09
  • Published : 2019.05.10
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Abstract

Modular steel buildings consist of prefabricated room-sized structural units that are manufactured offsite and installed onsite. The inter-module connections must fulfill the assembly construction requirements and soundly transfer the external loads. This work proposes an innovative assembled connection suitable for modular buildings with concrete-filled steel tube columns. The connection uses pretensioned strands and plugin bars to vertically connect the adjacent modular columns. The moment-transferring performance of this inter-module connection was studied through monotonic and cyclic loading tests. The results showed that because of the assembly construction, the connected sections were separated under lateral bending, and the prestressed inter-module connection performed as a weak semirigid connection. The moment strength at the early loading stage originated primarily from the contact bonding mechanism with the infilled concrete, and the postyield strength depended mainly on the tensioned strands. The connection displayed a self-centering-like behavior that the induced deformation was reversed during unloading. The energy dissipation originated primarily from frictional slipping of the plugin bars and steel strands. The moment transferring ability was closely related to the section dimension and the arrangements of the plugin bars and steel strands. A simplified strength calculation and evaluation method was also proposed, and the effectiveness was validated with the test data.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

References

  1. Annan, C.D., Youssef, M.A. and El-Naggar, M.H. (2007), "Seismic performance of modular steel braced frames", Proceedings of the Ninth Canadian Conference on Earthquake Engineering, Ottawa, Ontario, Canada.
  2. Annan, C.D., Youssef, M.A. and El-Naggar M.H. (2009), "Experimental evaluation of the seismic performance of modular steel-braced frames", Eng. Struct., 31(7), 1435-1446. https://doi.org/10.1016/j.engstruct.2009.02.024
  3. Brando, G., Agostino, F.D. and Matteis, G.D. (2013), "Experimental tests of a new hysteretic damper made of buckling inhibited shear panels", Mater. Struct., 46(12), 2121-2133. https://doi.org/10.1617/s11527-013-0040-6
  4. Chen, Z., Li, H., Chen, A., Yu, Y. and Wang, H. (2017), "Research on pretensioned modular frame test and simulations", Eng. Struct., 151, 774-787. https://doi.org/10.1016/j.engstruct.2017.08.019
  5. Chen, Y., Hou, C. and Peng, J. (2019), "Stability study on tenonconnected SHS and CFST columns in modular construction", Steel Compos. Struct., Int. J., 30(2), 185-199.
  6. Doh, J.H., Ho, N.M., Miller, D., Peters, T., Carlson, D. and Lai, P. (2016), "Steel Bracket Connection on Modular Buildings", J. Steel Struct. Constr., 2(2), 1000121.
  7. EN 1993-1-8 (2005), Eurocode 3: design of steel structures-part 1-8: design of joints, CEN, Brussels, Belgium.
  8. Farnsworth, D. (2014a), "Modular tall building design at Atlantic Yards B2", Proceedings of CTBUH 2014 International Conference, Shanghai, China.
  9. Fathieh, A. and Mercan, O. (2014), "Three-Dimensional, Nonlinear, Dynamic Analysis of Modular Steel Buildings", Structures Congress 2014, pp. 2466-2477.
  10. Fathieh, A. and Mercan, O. (2016), "Seismic evaluation of modular steel buildings", Eng. Struct. 122, 83-92. https://doi.org/10.1016/j.engstruct.2016.04.054
  11. GB 50010-2010 (2010), Code for Design of Concrete Structures; China Architecture and Building Press, Beijing, China.
  12. GB 50936-2014 (2014), Technical code for concrete filled steel tubular structures; China Architecture and Building Press, Beijing, China.
  13. Gunawardena, T., Ngo, T., Mendis, P. and Alfano, J. (2016a), "Innovative flexible structural system using prefabricated modules", J. Architect. Eng., 22(4), 05016003. https://doi.org/10.1061/(ASCE)AE.1943-5568.0000214
  14. Gunawardena, T., Ngo, T. and Mendis, P. (2016b), "Behaviour of Multi-Storey Prefabricated modular Buildings under seismic loads", Earthq. Struct., Int. J., 11(6), 1061-1076. https://doi.org/10.12989/eas.2016.11.6.1061
  15. JGJ101-96 (1996), Specification of Testing Methods for Earthquake Resistant Building; China Building Industry Press, Beijing, China.
  16. Lacey, A.W., Chen, W., Hao, H. and Bi, K. (2018), "Structural response of modular buildings - an overview", J. Build. Eng., 16, 45-56. https://doi.org/10.1016/j.jobe.2017.12.008
  17. Lawson, R.M., Ogden, R.G. and Bergin, R. (2012), "Application of Modular Construction in High-Rise Buildings", J. Architect. Eng. 18(2), 148-154. https://doi.org/10.1061/(ASCE)AE.1943-5568.0000057
  18. Lawson, R.M., Ogden, R.G. and Goodier, C. (2014), Design in Modular Construction, CRC Press.
  19. Lee, S.S., Sang, S., Park, K.S., Hong, S.Y. and Bae, K.W. (2015), "Behavior of C-Shaped beam to square hollow section column connection in modular frame", J. Kor. Soc. Steel Constr., 27(5), 471-481. https://doi.org/10.7781/KJOSS.2015.27.5.471
  20. Liu, X.C., Xu, A.X., Zhang, A.L., Ni, Z., Wang, H.X. and Wu, L. (2015), "Static and seismic experiment for welded joints in modularized prefabricated steel structure", J. Constr. Steel Res., 112, 183-195. https://doi.org/10.1016/j.jcsr.2015.05.003
  21. Lopezbarraza, A., Ruiz, S.E., Reyessalazar, A. and Bojorquez, E. (2016), "Demands and distribution of hysteretic energy in moment resistant self-centering steel frames", Steel Compos. Struct., Int. J., 20(5), 1155-1171. https://doi.org/10.12989/scs.2016.20.5.1155
  22. Rojas, P., Ricles, J.M. and Sause, R. (2005), "Seismic Performance of Post-tensioned Steel Moment Resisting Frames With Friction Devices", J. Struct. Eng.-ASCE, 131(4), 529-540. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:4(529)
  23. Sharafi, P., Samali, B., Ronagh, H. and Ghodrat, M. (2017), "Automated spatial design of multi-story modular buildings using a unified matrix method", Automat. Constr., 82, 31-42. https://doi.org/10.1016/j.autcon.2017.06.025
  24. Srisangeerthanan, S., Hashemi, M.J., Rajeev, P., Gad, E. and Fernando, S. (2018), "Numerical study on the effects of diaphragm stiffness and strength on the seismic response of multi-story modular buildings", Eng. Struct., 163, 25-37. https://doi.org/10.1016/j.engstruct.2018.02.048
  25. Wang, Y., Ma, Q. and Yang, S. (2016), "Mechanical properties of beam-column connection joints using inner sleeve composite bolts in fabricated steel structure", J. Tianjin Univ. (Science and Technology), 49(Suppl.), 73-79.
  26. Yu, Y.J., Wang, X.X. and Chen, Z.H. (2017), "Evaluation on steel cyclic response to strength reducing heat treatment for seismic design application", Constr. Build. Mater., 140, 468-484. https://doi.org/10.1016/j.conbuildmat.2017.02.088

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