Effect of Free Vibration Frequency on Modeling of Bridge Pier
Tóm tắt
Pile groups are a widely used foundation system to support structures placed over soft soil or when the shallow foundation is not appropriate due to excessive settlement especially for bridges, flyovers, or metro piers. Estimation of appropriate free vibration frequency for a bridge pier in design procedure gives appropriate and more optimized design. The frequencies obtained by considering soil pile interaction are more realistic than considering bridge pier as single degree of freedom (SDOF) system fixed at top of a pile cap. In the present study, the frequency is calculated by modeling the pier as SDOF system as well as by considering the soil-pile interaction effect. It is observed that to evaluate free vibration frequency, pile-soil interaction effect including distributed mass system for pier should be accounted.
Tài liệu tham khảo
Duan, M., Perdikaris, P.C., Chen, W.F.: Chapter 56: impact effect of moving vehicle. In: Chen, W.F., Duan, L. (eds.) Bridge Engineering Handbook. CRC Press, Boca Raton (1999)
IRC6 2014. Code of practice for road bridges, Section–II, Loads and Stresses-Third Revision
IRC6 2016. Code of practice for road bridges, Section–II, Loads and Stresses-Fourth Revision
IS1893-part3 (2014). Criteria for earthquake resistant design of structures, bridges and retaining walls, Bureau of Indian Standards, Part, 3
Magade S. B., & Ingle, R.K.: Approach for depth of isolated square footing under static concentric loading, Procedings of Confrence on Numerical Modelling in Geomechanics, IIT Roorkee, India., 3-4th March 61–66 (2017a)
Magade S. B., & Ingle, R.K.: Comparative study of moments with plate and solid element for an isolated footing under axial load, INFRACON, (2017b)
Magade S. B., and Ingle, R. K.: Comparison of moments for pile cap design, Soil Mechanics and Foundation Engineering. (2018a)
Magade, S. B., & Ingle, R. K.: Numerical method for analysis and design of isolated square footing under concentric loading, International Journal of Advanced Structural Engineering., 1–12. https://doi.org/10.1007/s40091-018-0211-3. (2018b)
Magade, S. B. & Ingle, R. K.: Influence of clear edge distance and spacing of piles on failure of pile cap. Iran. J. Sci. Technol. Trans. Civil Eng., 1–17 (2019a)
Magade, S.B., Ingle, R.K.: Numerical method for analysis and design of isolated square footing under concentric loading. International Journal of Advanced Structural Engineering. 11(1), 9–20 (2019b)
Magade, S.B., Ingle, R.K.: Effect of clear edge distance on failure of pile cap. ACI Struct. J. 117(3), 131–140 (2020)
Magade, S. B., & Ingle, R. K.: Comparative study of moments with plate and solid elements for an isolated footing under axial load
Shirgir, V., Ghanbari, A., Shahrouzi, M.: Natural frequency of single pier bridges considering soil-structure interaction. J. Earthq. Eng. 20(4), 611–632 (2016)
Spyrakos, C.C.: Assessment of SSI on the longitudinal seismic response of the short span bridges. Construction and Building Materials. 4(4), 170–175 (1990)
Tse, F.S., Morse, I.E., Hinkle, R.T.: Mechanical vibrations: theory and application, 2nd edn. CBS Publishers and Distributors, New Delhi (1983)
Zhao, M.H., Yang, J., Yang, M.H.: Natural frequency of tapered high pier considering pile-soil interaction. J. Cent. S. Univ. Technol. 17(3), 635–641 (2010)