Earthquakes and Structures

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Seismic and collapse analysis of a UHV transmission tower-line system under cross-fault ground motions

  • Tian, Li (School of Civil Engineering, Shandong University) ;
  • Bi, Wenzhe (School of Civil Engineering, Shandong University) ;
  • Liu, Juncai (School of Civil Engineering, Shandong University) ;
  • Dong, Xu (School of Civil Engineering, Shandong University) ;
  • Xin, Aiqiang (School of Civil Engineering, Shandong University)
  • Received : 2020.10.09
  • Accepted : 2020.12.01
  • Published : 2020.12.25
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Abstract

An ultra-high voltage (UHV) transmission system has the advantages of low circuitry loss, high bulk capacity and long-distance transmission capabilities over conventional transmission systems, but it is easier for this system to cross fault rupture zones and become damaged during earthquakes. This paper experimentally and numerically investigates the seismic responses and collapse failure of a UHV transmission tower-line system crossing a fault. A 1:25 reduced-scale model is constructed and tested by using shaking tables to evaluate the influence of the forward-directivity and fling-step effects on the responses of suspension-type towers. Furthermore, the collapse failure tests of the system under specific cross-fault scenarios are carried out. The corresponding finite element (FE) model is established in ABAQUS software and verified based on the Tian-Ma-Qu material model. The results reveal that the seismic responses of the transmission system under the cross-fault scenario are larger than those under the near-fault scenario, and the permanent ground displacements in the fling-step ground motions tend to magnify the seismic responses of the fault-crossing transmission system. The critical collapse peak ground acceleration (PGA), failure mode and weak position determined by the model experiment and numerical simulation are in relatively good agreement. The sequential failure of the members in Segments 4 and 5 leads to the collapse of the entire model, whereas other segments basically remain in the intact state.

Keywords

Acknowledgement

This research was supported by the National Natural Science Foundation of China under Awards No. 51778347 and 51578325 and the Young Scholars Program of Shandong University under Award No. 2017WLJH33.

References

  1. Alavi, B. and Krawinkler, H. (2004), "Strengthening of momentresisting frame structures against near-fault ground motion effects", Earthq. Eng. Struct. D., 33(6), 707-722. https://doi.org/10.1002/eqe.370.
  2. Bertero, V.V., Mahin, S.A. and Herrera R.A. (1978), "Aseismic design implications of near-fault san fernando earthquake records", Earthq. Eng. Struct. D., 6(1), 31-42. https://doi.org/10.1002/eqe.4290060105.
  3. Beyer, K. and Bornmer, J.J. (2007), "Relationships between median values and between aleatory variabilities for different definitions of the horizontal component of motion", B. Seismol. Soc. Am., 97(5), 1769-1769. https://doi.org/10.1785/0120070128.
  4. Bray, J.D. and Rodriguez-Marek, A. (2004), "Characterization of forward-directivity ground motions in the near-fault region", Soil Dyn. Earthq. Eng., 24(11), 815-828. https://doi.org/10.1016/j.soildyn.2004.05.001.
  5. CECS 392 (2014), Code for anti-collapse design of building structures, CECS (China Association for Engineering Construction Standardization); Beijing, China. (In Chinese)
  6. Goel, R., Qu, B., Tures, J. and Rodriguez, O. (2014), "Validation of fault rupture-response spectrum analysis method for curved bridges crossing strike-slip fault rupture zones", J. Bridge Eng., 19(5). 06014002. https://doi.org/10.1061/(asce)be.1943-5592.0000602.
  7. Lei, Y.H. and Chien, Y.L. (2009), "Seismic analysis of transmission towers under various line configurations", Struct. Eng. Mech., 31(3), 241-264. https://doi.org/10.12989/sem.2009.31.3.241.
  8. Li, H.N., Shi, W.L., Wang, G.X. and Jia, L.G. (2005), "Simplified models and experimental verification for coupled transmission tower-line system to seismic excitations", J. Sound Vib., 286(3), 569-585. https://doi.org/10.1016/j.jsv.2004.10.009.
  9. Liang, H.B., Xie, Q., Bu, X.H. and Cao, Y.X. (2020), "Shaking table test on 1000 kV UHV transmission tower-line coupling system", Struct., 27, 650-663. https://doi.org/10.1016/j.istruc.2020.06.017.
  10. Long, X.H., Wang, W. and Fan, J. (2018), "Collapse analysis of transmission tower subjected to earthquake ground motion", Model. Simul. Eng., 2018, 1-20. https://doi.org/10.1155/2018/2687561.
  11. Mahmoudabadi, V., Bahar, O., Jafari, M. K. and Safiey, A. (2019), "Dynamic identification of soil-structure system designed by direct displacement-based method for different site conditions", Struct. Eng. Mech., 71(4), 445-458. https://doi.org/10.12989/sem.2019.71.4.445.
  12. Meshmesha, H.M., Kennedy, J.B., Sennah, K. and Moradi, S. (2019), "Static and dynamic analysis of guyed steel lattice towers", Struct. Eng. Mech., 69(5), 567-577. https://doi.org/10.12989/sem.2019.69.5.567.
  13. Pan, H.Y., Tian, L. and Fu, X. (2020), "Sensitivities of the seismic response and fragility estimate of a transmission tower to structural and ground motion uncertainties", J. Constr. Steel Res., 167, 105941. https://doi.org/10.1016/j.jcsr.2020.105941.
  14. Park, H.S., Choi, B.H., Kim, J.J. and Lee, T.H. (2016), "Seismic performance evaluation of high voltage transmission towers in South Korea", Ksce J. Civ. Eng., 20(6), 2499-2505. https://doi.org/10.1007/s12205-015-0723-3.
  15. Sedov, L.I. (2018), Similarity and dimensional methods in mechanics, CRC press, Boca Raton, U.S.A. https://doi.org/10.1201/9780203739730.
  16. Somerville, P.G., Smith, N.F., Graves, R.W. and Abrahamson, N.A. (1997), "Modification of empirical strong ground motion attenuation relations to include the amplitude and duration effects of rupture directivity", Seismol. res. lett., 68(1), 199-222. https://doi.org/10.1785/gssrl.68.1.199.
  17. Soyluk, K. and Karaca, H. (2017), "Near-fault and far-fault ground motion effects on cable-supported bridges", Procedia Eng., 199, 3077-3082. https://doi.org/10.1016/j.proeng.2017.09.421.
  18. Tian, L., Gai, X. and Qu, B. (2017a), "Shake table tests of steel towers supporting extremely long-span electricity transmission lines under spatially correlated ground motions", Eng. Struct., 132(1), 791-807. https://doi.org/10.1016/j.engstruct.2016.11.068.
  19. Tian, L., Gao, G.D. and Qu, B. (2020a), "A simplified method for estimating fundamental periods of pylons in overhead electricity transmission systems", Earthq. Struct., 19(2), 119-128. https://doi.org/10.12989/eas.2020.19.2.119.
  20. Tian, L., Ma, R.S. and Qu, B. (2018a), "Influence of different criteria for selecting ground motions compatible with IEEE 693 required response spectrum on seismic performance assessment of electricity transmission towers", Eng. Struct., 156, 337-350. https://doi.org/10.1016/j.engstruct.2017.11.046.
  21. Tian, L., Ma, R.S., Qiu, C.X., Xin, A.Q., Pan, H.Y. and Guo, W. (2018b), "Influence of multi-component ground motions on seismic responses of long-span transmission tower-line system: An experimental study", Earthq. Struct., 15(6), 583-593. https://doi.org/10.12989/eas.2018.15.6.583.
  22. Tian, L., Pan, H. Y., Ma, R.S. and Qiu, C. X. (2017b), "Collapse simulations of a long span transmission tower-line system subjected to near-fault ground motions", Earthq. Struct., 13(2), 211-220. https://doi.org/10.12989/eas.2017.13.2.211.
  23. Tian, L., Pan, H.Y. and Ma, R.S. (2019), "Probabilistic seismic demand model and fragility analysis of transmission tower subjected to near-field ground motions", J. Constr. Steel Res., 156, 266-275. https://doi.org/10.1016/j.jcsr.2019.02.011.
  24. Tian, L., Pan, H.Y., Ma, R.S., Zhang, L.J. and Liu, Z.W. (2020b), "Full-scale test and numerical failure analysis of a latticed steel tubular transmission tower", Eng. Struct., 208, 109919. https://doi.org/10.1016/j.engstruct.2019.109919.
  25. Tian, L., Zhou, M.Y., Pan, H.Y., Xin, A.Q. and Liu, Y.P. (2020c), "Shaking table tests of a reduced-scale UHV transmission tower-line system subjected to near-fault ground motions", Int. J. Struct. Stab. Dy., 20(6), 2040015. https://doi.org/10.1142/S0219455420400155.
  26. Ucak, A., Mavroeidis, G.P. and Tsopelas, P. (2014), "Behavior of a seismically isolated bridge crossing a fault rupture zone", Soil Dyn. Earthq. Eng., 57, 164-178. https://doi.org/10.1016/j.soildyn.2013.10.012.
  27. Wang, G.Q. and Zhou, X.Y. (2004), "Baseline correction of near fault ground motion recordings of the 1999 Chi-Chi, Taiwan earthquake", Seismol. Egology, 1, 1-14. (In Chinese)
  28. Wei, W.H., Hu, Y., Wang, H. and Pi, Y.L. (2019), "Seismic responses of transmission tower-line system under coupled horizontal and tilt ground motion", Earthq. Struct., 17(6), 635-647. https://doi.org/10.12989/eas.2019.17.6.635.
  29. Wu, G., Zhai, C. H., Li, S. and Xie, L. L. (2014), "Effects of nearfault ground motions and equivalent pulses on large crossing transmission tower-line system", Eng. Struct., 77, 161-169. https://doi.org/10.1016/j.engstruct.2014.08.013.
  30. Xiang, N.L., Yang, H.Y. and Li, J.Z. (2019), "Performance of an isolated simply supported bridge crossing fault rupture: shake table test", Earthq. Struct., 16(6), 665-677. https://doi.org/10.12989/eas.2019.16.6.665.
  31. Yan, G.M., Gao, B., Shen, Y.S., Zheng, Q., Fan, K.X. and Huang, H.F. (2020), "Shaking table test on seismic performances of newly designed joints for mountain tunnels crossing faults", Adv. Struct. Eng., 23(2), 248-262. https://doi.org/10.1177/1369433219868932.
  32. Yan, Y.F., Shao, B., Wang, J.J. and Yan, X.Z. (2018), "A study on stress of buried oil and gas pipeline crossing a fault based on thin shell fem model", Tunn. Undergr. Sp. Tech., 81, 472-479. https://doi.org/10.1016/j.tust.2018.08.031.
  33. Zhang, F., Li, S., Wang, J.Q. and Zhang, J. (2020), "Effects of fault rupture on seismic responses of fault-crossing simplysupported highway bridges", Eng. Struct., 206(1), 110104. https://doi.org/10.1016/j.engstruct.2019.110104.