The Effect of Groundsill Height on Bridge Pillar Flow Characteristics (Physical Model)

Azarine Vashti Alpha Raissa; Bambang Adhi Priyambodho; Ngakan Putu Purnaditya; Restu Wigati; Subekti Subekti

doi:10.36055/fondasi.v12i2.22047

The Effect of Groundsill Height on Bridge Pillar Flow Characteristics (Physical Model)

Azarine Vashti Alpha Raissa, Bambang Adhi Priyambodho, Ngakan Putu Purnaditya, Restu Wigati, Subekti Subekti

Abstract

Groundsill is one of the categories of wide thresholds that are generally built transversely in the river downstream of a building threatened with damage caused by scouring such as bridge pillars. In addition to construction factors, local scour around the pillars can be another factor causing the collapse of the bridge structure. The purpose of this study was to determine the effect of groundsill height on flow characteristics. Physical model research on open channels (flume) was carried out at the Integrated Laboratory of Sultan Ageng Tirtayasa University, Sindangsari Campus. The groundsill model is modeled with dimensions of 8 cm peak width, 30 cm length, and groundsill height variations (1, 2, 3, 4, and 5 cm) made of wood while the bridge pillar model is modeled with a diameter of 1 inch made of PVC pipe which is filled with concrete. The results showed that the higher the groundsill (p), the higher the water level upstream (H₁) is greater and downstream (H₂) is smaller, while the flow speed upstream (V₁) is smaller and downstream (V₂) is greater so that the Froude number downstream is greater than upstream. The higher the groundsill (p), the Froude number downstream will increase (supercritical flow) while upstream will decrease (subcritical flow).

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References

Armin, H. Manalip, and B. D. Handono, “PERENCANAAN BALOK GIRDER PROFIL I PADA JEMBATAN PRESTRESSED DENGAN VARIASI BENTANG,” Jurnal Sipil Statik, vol. 6, no. 2, pp. 67–74, 2018.

T. D. Putra, E. Fatimah, and Azmeri, “PENGARUH PILAR JEMBATAN PANGO TERHADAP POLA ALIRAN SUNGAI KRUENG ACEH,” vol. 1, no. 4, pp. 1005–1018, 2018.

TAJRIANA, “PERBANDINGAN POLA GERUSAN PADA PILAR JEMBATAN SEBELUM DAN SETELAH ADANYA TIRAI SAYAP BETON”.

D. PRADANA, “ANALISIS PENGARUH KECEPATAN ALIRAN TERHADAP GERUSAN LOKAL DI SEKITARPILAR JEMBATAN SUNGAI PAPPA’”.

Sucipto, “ANALISIS GERUSAN LOKAL DI SEKITAR SEMI-CIRCULAR-END ABUTMENT DENGAN PERLINDUNGAN GROUNDSILL PADA FROUD NUMBER (Fr) 0,2,” TEKNIK SIPIL & PERENCANAAN, vol. 12, no. 1, pp. 29–40, 2020.

D. Purwantoro, “Model Pengendalian Gerusan di Sekitar Abutmen dengan Pemasangan Groundsill dan Abutmen Bersayap,” INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur, vol. 11, no. 1, pp. 79–89, 2015.

A. Fitri et al., “Effectiveness of a groundsill structure in reducing scouring problem at Cimadur River, Banten Province,” in IOP Conference Series: Earth and Environmental Science, IOP Publishing Ltd, Nov. 2021. doi: 10.1088/1755-1315/880/1/012026.

N. Handajani, S. Zainab, and M. N. Trilita, “Analysis of Intensity, Duration, Frequency for Groundsill Planning in the Lower Bengawan Solo River Basin,” in IOP Conference Series: Materials Science and Engineering, 2020. doi: 10.1088/1757-899X/1125/1/012015.

A. D. Pangestu and S. A. Y. Astuti, “STUDI GERUSAN DI HILIR BENDUNG KOLAM OLAK TIPE VLUGHTER DENGAN PERLINDUNGAN GROUNDSILL,” Jurnal Teknisia, vol. XXIII, no. 1, pp. 463–473, 2018.

L. F. RIANI, “STUDI PENGARUH GROUNDSILL DAN ABUTMENT TERHADAP BENTUK PENGALIRAN SEDIMEN DALAM SALURAN TERBUKA.”

R. Y. Tallar and Ivan, “STUDI EKSPERIMENTAL PENGARUH BLOK-HALANG PADA LANTAI KOLAM OLAK BENDUNG TERHADAP PENGGERUSAN LOKAL,” Jurnal Teknik Sipil, vol. 16, no. 2, pp. 134–192, 2020.

C. K. Chang, J. Y. Lu, S. Y. Lu, Z. X. Wang, and D. S. Shih, “Experimental and numerical investigations of turbulent open channel flow over a rough scour hole downstream of a groundsill,” Water (Switzerland), vol. 12, no. 5, May 2020, doi: 10.3390/w12051488.

Y. Sutopo and A. E. Saputro, “Groundsill stability in downstream of bridge ‘besi’ in body of water at River Garang Semarang city, Indonesia,” in IOP Conference Series: Materials Science and Engineering, Institute of Physics Publishing, May 2020. doi: 10.1088/1757-899X/830/2/022073.

P. Shakinah Ragilia and Susarman, “Efektifitas Struktur Groundsill Dalam Mengurangi Gerusan Di Dasar Sungai: Kajian Literatur,” Journal of Infrastructural in Civil Engineering (JICE), vol. 02, no. 01, pp. 8–15, 2021, [Online]. Available: https://ejurnal.teknokrat.ac.id/index.php/jice

A. Hairani and D. Legono, “Laboratory Study on Comparison of the Scour Depth and Scour Length of Groundsill with the Opening and Groundsill without the Opening,” Journal of the Civil Engineering Forum, vol. 2, no. 1, pp. 39–46, 2016.

DOI: http://dx.doi.org/10.36055/fondasi.v12i2.22047