تعداد نشریات | 21 |
تعداد شمارهها | 593 |
تعداد مقالات | 8,812 |
تعداد مشاهده مقاله | 66,764,250 |
تعداد دریافت فایل اصل مقاله | 7,327,779 |
Response of Buildings with Inclined First-Story Columns to Near-Fault Ground Motion | ||
Journal of Rehabilitation in Civil Engineering | ||
مقاله 2، دوره 2، شماره 1 - شماره پیاپی 3، اردیبهشت 2014، صفحه 19-34 اصل مقاله (855.96 K) | ||
شناسه دیجیتال (DOI): 10.22075/jrce.2014.210 | ||
نویسندگان | ||
Fouzieh Rouzmehr1؛ Reza Saleh Jalali* 2 | ||
1MS Student, Dept. of Civil Eng., Faculty of Eng., University of Guilan, Rasht, Iran | ||
2Assistant Prof., Dept. of Civil Eng., Faculty of Eng., University of Guilan, Rasht, Iran | ||
تاریخ دریافت: 29 مرداد 1393، تاریخ بازنگری: 08 مهر 1393، تاریخ پذیرش: 30 مهر 1393 | ||
چکیده | ||
In this paper a simple model of a three story building with inclined first-story columns has presented. The stories are supposed to be rigid and are connected to axially rigid mass less columns by elasto-plastic rotational springs and linear rotational dampers. The considered model is subjected to horizontal component of fault normal pulse with different magnitudes and the governed nonlinear differential equations of motion have been solved by the forth order Runge-Kutta method. Results indicate that the inclination of the first-story columns stiffens the system. However, the change of the frequency of the first mode is small. The deformation of the first story with inclined columns is such that it forces the building in a pendulum-like motion. So it would be possible to reduce the relative building response. Results indicate that an optimum value of inclination angle of the first-story columns is . Under this condition the first-story drift decreases while upper-story drift increases, respect to the common building with . For larger inclination angles the gravity effect leads to increase the first-story drift as well. This solution would be useful in earthquake resistant design of buildings with architectural limitations at the first story. | ||
کلیدواژهها | ||
Near-fault earthquake؛ Forward directivity pulse؛ Inclined first-story column؛ Nonlinear response | ||
مراجع | ||
[1] Mavroeidis, G.P., Dong, G., and Papageorgiou, A. S. (2004). "Near-fault ground motions, and the response of elastic and inelastic single-degree-of-freedom (SDOF) systems". Earthquake Engineering and Structural Dynamics, 33(9): 1023-1049. [2] Trifunac, M.D. (1971). "Zero Baseline Correction of Strong-Motion Accelerograms". Bull. Seism. Soc. Amer., 61(5), 1201-1211. [3] Trifunac, M.D. (1974). "A Three-Dimensional Dislocation Model for the San Fernando, California, Earthquake of February 9, 1971". Bull. Seism. Soc. Amer., 64(1): 149-172. [4] Bogdanoff, J.L, Goldberg, J.E, and Schiff, A.J. (1965). "The effect of ground transmission time on the response of long structures". Bull. Seism. Soc. Am., 55, 627-640. [5] Zerva, A. (2009). "Spatial variation of seismic ground motions". CRC Press (Taylor and Francis), London. [6] Hyun, C. H., Yun, C. B., and Lee, D. G. (1992). " Nonstationary response analysis of suspension bridges for multiple support excitations". Prob. Eng. Mech. 7(1), 27-35. [7] Kashefi, I., and Trifunac, M.D. (1986). "Investigation of earthquake response of simple bridge structures". Dept. of Civil Eng., Report No. CE 86-02, Univ. of Southern California, Los Angeles, CA. [8] Perotti, F. (1990). "Structural response to non-stationary multiple support random excitation". Earthquake Eng. Struct. Dyn., 19, 513-527. [9] Todorovska, M. I., and Lee, V. W. (1989). "Seismic waves in buildings with shear walls or central core". J. Eng. Mech. Div. ASCE, 115(12), 2669-2686. [10] Todorovska, M. I., and Trifunac, M.D. (1989). "Antiplane earthquake waves in long structures". J. eng. mech. div. ASCE, 115(12), 2687-2708. [11] Todorovska, M. I., and Trifunac, M.D. (1990a). "A note on the propagation of earthquake waves in buildings with soft first floor". J. Eng. Mech. Div. ASCE, 116(4), 892-900. [12] Todorovska, M. I., and Trifunac, M.D. (1990b). "A note on excitation of long structures by ground waves". J. Eng. Mech. Div. ASCE, 116(4), 952-964. [13] Kojić, S., and Trifunac, M.D. (1988). "Earthquake response of arch dams to nonuniform canyon motion". Dept. of Civil Eng., Report No. CE 88-03, Univ. of Southern California, Los Angeles, CA. [14] Kojić, S., and Trifunac, M.D. (1991a). "Earthquake stresses in arch dams: I- theory and antiplane excitation". J. Eng. Mech. Div. ASCE, 117(3), 532-552. [15] Kojić, S. and Trifunac, M.D. (1991b). "Earthquake stresses in arch dams: II- excitation by SV, P and Rayleigh waves". J. Eng. Mech. Div. ASCE, 117(3), 553-574. [16] Okubo, T., Arakawa, T., and Kawashima, T. (1983). "Preliminary analysis of finite ground strains induced during earthquake and effect of spatial ground motions on structural response". Int. Symp. on Lifeline Earthquake Eng., 4th U.S. National Conf. on Pressure Vessels and Piping Technology, ASME, Portland, Oregon. [17] Zembaty, Z., and Krenk, S. (1993). "Spatial seismic excitations and reponse spectra". J. Eng. Mech. Div. ASCE, 119, 2449-2459. [18] Zembaty, Z., and Krenk, S. (1994). "Reponse spectra of spatial seismic ground motion". 10th European Conf. Earthquake Eng. Vol. 2, Vienna, Austria, 1271-1275. [19] Jalali, R.S., Nouripour Azgomi, M., and Trifunac, M.D (2013). "In-plane response of two-story structures to near-fault ground motion". Soil Dynamics and Earthquake Engineering, 55, 263-274. [20] Todorovska, M. I. (1999). "Base isolation by a soft first story with inclined columns". J. Eng. Mech. Div. ASCE, 125(4), 448-457. [21] Trifunac, M.D., Udwadia, F.E. (1974). "Parkfield, California, earthquake of June 27, 1966: A three-dimensional moving dislocation". Bull. Seism. Soc. Amer., 64(3): 511-533. [22] Haskell, N.A. (1969). "Elastic displacements in the near field of a propagating fault". Bull. Seismol. Soc. Amer., 59(2), 956-980. [23] Trifunac, M.D. (1993a). "Long Period Fourier Amplitude Spectra of Strong Motion Acceleration". Soil Dynamics and Earthquake Eng., 12(6), 363-382. [24] Trifunac, M.D. (1993b). "Broad band extension of Fourier amplitude spectra of strong motion acceleration". Dept. of Civil Eng. Report CE 93-01, Univ. of Southern California, Los Angeles, CA. [25] Trifunac, M.D. (1998). "Stresses and intermediate frequencies of strong motion acceleration". Geofizika, 14, 1-27. [26] Trifunac, M.D., Todorovska, M.I., Lee, V.W. (1998). "The Rinaldi strong motion accelerogram of the Northridge, California, earthquake of 17 January, 1994". Earthquake Spectra, 14(1): 225-239. [27] Trifunac, M. D. (1982). "A note on rotational components of earthquake motions on ground surface for incident body waves". Soil Dyn. Earthq. Eng. 1(1), 11-19. | ||
آمار تعداد مشاهده مقاله: 2,106 تعداد دریافت فایل اصل مقاله: 2,713 |