Material Protection for Citarum River-Bed by Local Scour used What-If Analysis

DOI

10.2991/aer.k.211106.077How to use a DOI?

Keywords

Bridge pier; Citarum river; Local scouring; Scour protection; What-if analysis

Abstract

This paper presents scour protection measures at the Citarum riverbed due to obstruction of the Batujajar bridge piers used what-if analysis. Various studies have been carried out and developed for more than 30 decades, showing that the scour phenomenon causes many cases of bridge collapse in the world. The change in flow pattern caused a horseshoe vortex flow triggers local scour. What-if analysis helps in problem seeking, problem analysis, and problem-solving. Based on previous research, the data collected were maximum flood discharge (Nakayasu HSS method), topographic maps and engineering geological maps, soil property index in the Citarum river, and data on the Batujajar bridge. Topographic surveys and geoelectric tests were also carried out. This research used flexible applicative approaches carried out according to conditions in the field. The mathematical modeling with the HEC-RAS application was a choice for predicting the scour depth. The scour simulation was carried out under existing conditions and with alternative riverbed material protections (protective plates, gabions, and pile caps). The minimum scours depth was achieved in the simulation using a gabion of 0.57 mm. It could minimize scour of depth until 1.73 m from existing conditions. This research can contribute to scour analysis, especially to minimized hazards on bridges crossing rivers.

Copyright

© 2021 The Authors. Published by Atlantis Press International B.V.

Open Access

This is an open access article under the CC BY-NC license.

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TY  - CONF
AU  - Nita Widia Khairinnisa Rustawa
AU  - Djuwadi Djuwadi
AU  - Bambang Setio Budianto
PY  - 2021
DA  - 2021/11/23
TI  - Material Protection for Citarum River-Bed by Local Scour used What-If Analysis
BT  - Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)
PB  - Atlantis Press
SP  - 491
EP  - 497
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.211106.077
DO  - 10.2991/aer.k.211106.077
ID  - Rustawa2021
ER  -