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Hemdan, N., Abdallah, M., Mohamed, A., M, B., Abd-Elmaged, A. (2016). EXPERIMENTAL STUDY ON THE EFFECT OF PERMEABLE BLOCKAGE AT FRONT OF ONE PIER ON SCOUR DEPTH AT MULT-VENTS BRIDGE SUPPORTS. JES. Journal of Engineering Sciences, 44(No 1), 27-39. doi: 10.21608/jesaun.2016.117585
Nasr-Allah T. Hemdan; Mohamed Y. Abdallah; Abdel-Aal G. Mohamed; Basiouny M; Amira Bahaa Abd-Elhasseb Abd-Elmaged. "EXPERIMENTAL STUDY ON THE EFFECT OF PERMEABLE BLOCKAGE AT FRONT OF ONE PIER ON SCOUR DEPTH AT MULT-VENTS BRIDGE SUPPORTS". JES. Journal of Engineering Sciences, 44, No 1, 2016, 27-39. doi: 10.21608/jesaun.2016.117585
Hemdan, N., Abdallah, M., Mohamed, A., M, B., Abd-Elmaged, A. (2016). 'EXPERIMENTAL STUDY ON THE EFFECT OF PERMEABLE BLOCKAGE AT FRONT OF ONE PIER ON SCOUR DEPTH AT MULT-VENTS BRIDGE SUPPORTS', JES. Journal of Engineering Sciences, 44(No 1), pp. 27-39. doi: 10.21608/jesaun.2016.117585
Hemdan, N., Abdallah, M., Mohamed, A., M, B., Abd-Elmaged, A. EXPERIMENTAL STUDY ON THE EFFECT OF PERMEABLE BLOCKAGE AT FRONT OF ONE PIER ON SCOUR DEPTH AT MULT-VENTS BRIDGE SUPPORTS. JES. Journal of Engineering Sciences, 2016; 44(No 1): 27-39. doi: 10.21608/jesaun.2016.117585

EXPERIMENTAL STUDY ON THE EFFECT OF PERMEABLE BLOCKAGE AT FRONT OF ONE PIER ON SCOUR DEPTH AT MULT-VENTS BRIDGE SUPPORTS

Article 2, Volume 44, No 1, January and February 2016, Page 27-39  XML PDF (1.01 MB)
Document Type: Research Paper
DOI: 10.21608/jesaun.2016.117585
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Authors
Nasr-Allah T. Hemdan1; Mohamed Y. Abdallah2; Abdel-Aal G. Mohamed2; Basiouny M1; Amira Bahaa Abd-Elhasseb Abd-Elmaged email 3
1Faculty of Engineering, Benha University, Egypt.
2Faculty of Engineering ,Zagazig University, Egypt.
3The Higher Institute of Engineering, El-Shorouk Academy, Egypt.
Abstract
Debris accumulation around bridge supports can constrict and redirect flow through the muti-vents bridges resulting in significant bridge foundation scour. The experimental study of this paper, aims to investigate the effect of different porosities of partial blockage at front of bridge pier on local scour depth formed around bridge supports. The permeable blockage with different relative heights (H/Bp= 0.4, 0.8 and 1.2) was fixed on and above the mobile bed. It was found that, for 15% porosity ratio of permeable blockage, the local scour depth at the left pier and right abutment was increased by 11.3% and 20% respectively compared to the no-blockage case. In addition the permeable blockage that placed at the water surface produces more local scour depth at multi-vents bridge supports compared to its location on the mobile bed.
Keywords
Local scour; Pier; Abutment; Permeable blockage; Hydraulic structures
Main Subjects
Civil Engineering: structural, Geotechnical, reinforced concrete and steel structures, Surveying, Road and traffic engineering, water resources, Irrigation structures, Environmental and sanitary engineering, Hydraulic, Railway, construction Management.
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