Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Elasto-plastic time history analysis of an asymmetrical twin-tower rigid-connected structure

  • Wu, Xiaohan (College of Civil Engineering, Tongji University) ;
  • Sun, Yanfei (College of Civil Engineering, Tongji University) ;
  • Rui, Mingzhuo (East China Architectural Design & Research Institute Co., Ltd.) ;
  • Yan, Min (East China Architectural Design & Research Institute Co., Ltd.) ;
  • Li, Lishu (East China Architectural Design & Research Institute Co., Ltd.) ;
  • Liu, Dongze (College of Civil Engineering, Tongji University)
  • Received : 2012.08.18
  • Accepted : 2013.03.05
  • Published : 2013.08.01
⟨ Previous Next ⟩

Abstract

The structure analyzed in this paper has particular building style and special structural system. It is a rigid-connected twin-tower skyscraper with asymmetrical distribution of stiffness and masses in two towers. Because of the different stiffness between the north and the south towers, the torsion seismic vibration is significant. In this paper, in order to study the seismic response of the structure under both frequent low-intensity earthquakes as well as rare earthquakes at the levels of intensity 7, the analysis model is built and analyzed with NosaCAD. NosaCAD is an nonlinear structure analysis software based on second-development of AutoCAD with ObjectARX. It has convenient modeling function, high computational efficiency and diversity post-processing functions. The deformations, forces and damages of the structure are investigated based on the analysis. According to the analysis, there is no damage on the structure under frequent earthquakes, and the structure has sufficient capacity and ductility to resist rare earthquakes. Therefore the structure can reach the goal of no damage under frequent earthquakes and no collapse under rare earthquakes. The deformation of the structure is below the limit in Chinese code. The time sequence and distribution of damages on tubes are reasonable, which can dissipate some dynamic energy. At last, according to forces, load-carrying capacity and damage of elements, there are some suggestions on increasing the reinforcement in the core tube at base and in stiffened stories.

Keywords

References

  1. Darwin, D. and Pecknold, D.A. (1976),"Analysis of RC shear panels under cyclic loading", J. Struct. Div. ASCE, 102, 355-369.
  2. Das, S. and Nau, M. (2003),"Seismic design aspects of vertically irregular reinforced concrete buildings", Earthq. Spectra, 19, 455-477. https://doi.org/10.1193/1.1595650
  3. Epackachi, S., Mirghaderi, R. and Esmaili, O. (2010),"Seismic evaluation of a 56-story residential reinforced concrete high-rise building based on nonlinear dynamic time history analysis", Struct. Des. Tall Spec, 21(4), 233-248.
  4. Ko, D.W. and Lee, H.S. (2006),"Shaking table tests on a high-rise RC building model having torsional eccentricity in soft lower stories", Earthq. Eng. Struct. Dyn., 35, 1425-1451. https://doi.org/10.1002/eqe.590
  5. Krawinkler, H. (2006),"Importance of good nonlinear analysis", Struct. Des. Tall Spec., 15, 515-531. https://doi.org/10.1002/tal.379
  6. Kupfer, H.B. and Gerstle, K.H. (1973),"Behaviour of concrete under biaxial stresses", J. Eng. Mech. Div. ASCE, 99, 853-866.
  7. La De Llera, J.C. and Chopra, A.K. (1995),"Understanding the inelastic seismic behavior of asymmetric-plan buildings", Earthq. Eng. Struct. Dyn., 24(4), 549-572. https://doi.org/10.1002/eqe.4290240407
  8. Lu, X.Z., Ye, L.P. and Liao, Z.W. (2009), Elasto-plastic analysis of buildings against earthquake, China Architecture &Building Press, 14-15.
  9. Lu, X.L., Zhang, H.Y., Hu, Z.L. and Lu, W.S. (1999),"Shaking table testing of a U-shaped plan building model", Can. J. Civ. Eng., 26, 746-759. https://doi.org/10.1139/l99-030
  10. Lu, X.L., Chen, L.Z., Zhou, Y. and Huang, Z.H. (2009),"Shaking table model tests on a complex high-rise building with two towers of different height connected by trusses", Struct. Des. Tall Spec., 18(7), 765-788. https://doi.org/10.1002/tal.460
  11. Lu, X.L., Su, N.F. and Zhou, Y. (2011),"Nonlinear time history analysis of a super-tall building with setbacks in elevation", Struct. Des. Tall Spec., 22(7), 593-614.
  12. Ministry of Construction of the People's Republic of China (2001), Code for Seismic Design of Buildings (GB50011-2001), China Architecture and Building Press, Beijing, China.
  13. Ministry of Construction of the People's Republic of China (2002), Technical Specification for Concrete Structures of Tall Building (JGJ3-2002), China Architecture and Building Press, Beijing, China.
  14. Sun, F.T., Wu, X.H. and Lu, X.L. (2009),"Research on earthquake resistance behavior of a long-span and cantilevered structure subjected to vertical motion", Struct. Eng., 25, 71-77.
  15. Tremblay, R. and Poncet, L. (2005),"Seismic performance of concentrically braced steel frames in multistory buildings with mass irregularity", J. Struct. Eng., 131, 1363-1375. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:9(1363)
  16. Wu, X.H. and Lu, X.L. (1996),"Nonlinear finite element analysis of reinforced concrete slit shear wall under cyclic loading", Journal of Tongji University, 24, 117-123.
  17. Wu, X.H. and Lu, X.L. (2003),"Tendon model for nonlinear analysis of externally prestressed concrete structures", J. Struct. Eng., ASCE, 129(1), 96-104. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:1(96)
  18. Wu, X.H., Yuan, Z.Y. and Lu, X.L. (2008),"Elasto-plastic time history analysis of T2 building of shanghai pudong international airport", J. Earthq. Eng., 19, 71-75.
  19. Wu, X.H., Wei, X.D., Qian, J. and Lu, X.L. (2011),"Elasto-plastic time history analysis of a double-tower connected structure", J. Earthq. Eng., 31, 51-58.
  20. Yahyai, M., Rezayibana, B. and Daryan, A.S. (2009),"Nonlinear seismic response of milad tower using finite element model", Struct. Des. Tall Spec., 18(8), 877-890. https://doi.org/10.1002/tal.468
  21. Yang, J., Chen, Y., Jiang, H. and Lu, X. (2010),"Shaking table tests on china pavilion for expo 2010 Shanghai China", Struct. Des. Tall Spec., 21(4), 265-282.
  22. Zhang, T., Wu, X.H. and Lu, X.L. (2012),"Elasto-plastic time history analysis of a structure with irregularity in plan", Struct. Eng., 28, 18-26.

Cited by

  1. Seismic Evaluation of a Multitower Connected Building by Using Three Software Programs with Experimental Verification vol.2016, 2016, https://doi.org/10.1155/2016/8215696
  2. Seismic Performance Analysis of a Connected Multitower Structure with FPS and Viscous Damper vol.2018, pp.1875-9203, 2018, https://doi.org/10.1155/2018/1865761
  3. Evaluation of Seismic performance of RC setback frames vol.66, pp.5, 2013, https://doi.org/10.12989/sem.2018.66.5.609
  4. Artificial Ground Motions and Nonlinear Response of RC Structures vol.2020, pp.None, 2013, https://doi.org/10.1155/2020/8849623