Results 41 to 50 of about 1,955 (169)

Influence of flow unsteadiness on local scour at bridge piers: An energy-based perspective

International Journal of Sediment Research
Local scour at piers is a major cause of bridge failures worldwide. While most existing studies assume steady flow conditions, actual flood events are inherently unsteady, with distinct rising and falling limbs that significantly modify scour dynamics ...
Qigang Chen, Jiacheng Li, Pengfei Li, Qiang Zhong   +3 more
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Impacts of coastal vegetation on tsunami-induced overtopping scour behind embankments and local scour around buildings

Applied Ocean Research
This study experimentally investigates the role of coastal vegetation in adjusting tsunami-induced overtopping scour behind embankments and local scour around buildings.
Ying-Tien Lin, Jiufeng Ji, Dongrui Han, Yeping Yuan   +3 more
doaj   +1 more source

Temporal variation of clear-water scour at compound Abutments

Ain Shams Engineering Journal, 2016
Most of actual abutments in rivers are built on foundation, while there is limited number of study available on the effects of the foundation on the local scour.
Aminuddin Ab. Ghani, Reza Mohammadpour
doaj   +1 more source

Mechanics of local scour: supplement, methods of reducing scour

, 1966
The purpose of this report is to summarize the results of tests conducted at Colorado State University on the hydraulic feasibility of reducing scour by modifying pier shapes. The following models were investigated: 1. Sharp nosed piers. 2. Rectangular pier on flat footing supported on piles. 3.
Shen, Hsieh Wen, 1931-, author, Schneider, V. R., author, Karaki, Susumu, author, Civil Engineering Department, Engineering Research Center, Colorado State University, publisher   +3 more
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Hazards due to large wood accumulations: Local scour and backwater rise

E3S Web of Conferences, 2018
Large wood (LW) in rivers increases the flow variability and provides habitats for various species. During flood events, transported logs can accumulate at river infrastructures and increase the flood hazard.
Schalko Isabella, Schmocker Lukas, Weitbrecht Volker, Boes Robert M.   +3 more
doaj   +1 more source

Simultaneous Effect of Collar and Roughness on Reducing and Controlling the Local Scour around Bridge Abutment

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2017
Investigation of local scour around hydraulic structures particularly bridges is of crucial importance in river engineering. Bridge destruction mostly occurs as a result of scour phenomenon around piers and abutments, not because of structural weaknesses.
Hamed Shahsavari, Manouchehr Heidarpour, Mohammad Mohammadalizadeh   +2 more
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Mechanics of local scour. Part 1, Discussion: status of knowledge of local scour

, 1963
CER63SSK46. ; Prepared for U.S. Department of Commerce, Bureau of Public Roads, Division of Hydraulic Research under contract 11-8022. ; November 1963.
Karaki, Susumu, author, Haynie, Richard M., author, Civil Engineering Section, Colorado State University, publisher   +2 more
openaire   +1 more source

Assessment of Local Scour at Bridges Abutment

Research Journal of Applied Sciences, Engineering and Technology, 2014
الأضرار الاجتماعية والاقتصادية هي أهم أضرار تعطل الجسر. ترتبط مشاكل استقرار هذه الهياكل ضد الفشل وعمق الدعامات ارتباطًا مباشرًا بكمية التنظيف المعدلة. كان الاقتصاد والموثوقية والاستقرار هي الاهتمامات الرئيسية بشأن تعزيز تصميم جسور الدعامة لمنع أو تقليل نظافة الركائز.
Pezhman Taherei Ghazvinei, Junaidah Ariffin, Jazuri Abdullah, Thamer Ahmed Mohamed   +3 more
openaire   +1 more source

Investigating the effect of curved shape of bridge abutment provided with collar on local scour, experimentally and numerically

Ain Shams Engineering Journal, 2015
Scour around bridge supports such as abutments can result in structural collapse and loss of life and property, so there is a need to control and minimize the local scour depth.
Y. Abdallah Mohamed, T. Hemdan Nasr-Allah, G. Mohamed Abdel-Aal, A. Shawky Awad   +3 more
doaj   +1 more source

The Effect of Geotextile Layer in Decreasing Local Scour of Cylindrical Bridge Pier

علوم آب و خاک, 2017
Flood currents are considered threatening factors by creating local scour along bridge piers. One method for decreasing local scour is to strengthen the bed against imposed tensions.
A. NOURI IMAMZADEHEI, Manouchehr HEIDARPOUR, M. R. NOURI IMAMZADEHEI, B. GHORBANI   +3 more
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