DOI QR코드

DOI QR Code

3-D wind-induced effects on bridges during balanced cantilever erection stages

  • 투고 : 2002.02.16
  • 심사 : 2002.10.03
  • 발행 : 2003.02.25

초록

Nowadays balanced cantilever construction plays an essential role as a sophisticated erection technique of bridges due to its economical and ecological advantages. Experience teaches that wind has a great importance with regard to this construction technique, but methods proposed by codes to take wind effects into account are still rather crude and, in most cases, completely lacking. Also research in this field is quite limited and aimed at studying only the longitudinal shear and the torque at the pier base, caused by the mean wind velocity and by the longitudinal turbulence actions over the deck. This paper advances the present solutions by developing a new procedure that takes into account all wind effects both on the deck and on the pier. The proposed model assumes the mean wind velocity as orthogonal to the bridge plane and considers the effects produced by all the three turbulence components and by the vortex shedding. The applications point out the role of each loading component on different bridge configurations and show that disregarding the presence of some effects may imply oversimplified results and relevant underestimations.

키워드

참고문헌

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  3. Wind loads and effects on rigid frame bridges with twin-legged high piers at erection stages vol.20, pp.10, 2017, https://doi.org/10.1177/1369433216684350
  4. The Wind-Induced Response of High-Pier Long-Span Continuous Rigid Frame Bridge vol.639-640, pp.1662-8985, 2013, https://doi.org/10.4028/www.scientific.net/AMR.639-640.502
  5. Statistics and probability analysis of vehicle overloads on a rigid frame bridge from long-term monitored strains vol.9, pp.3, 2012, https://doi.org/10.12989/sss.2012.9.3.287
  6. A simplified frequency formula for post-tensioned balanced cantilever bridges vol.20, pp.7, 2003, https://doi.org/10.1007/s42107-019-00160-y