Laboratory Investigation of Effect of Collar on Scour at Bridge Piers Group and Abutment in the Presence of Debris

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KARIMI M.; QADERI K.; RAHIMPOUR M.; AHMADI M.M.

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Journal: Irrigation and Drainage Structures Engineering Research Year:2020 | Volume:21 | Issue:78 Page(s): 99-116

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Title

Laboratory Investigation of Effect of Collar on Scour at Bridge Piers Group and Abutment in the Presence of Debris

Author(s)

KARIMI M. | QADERI K. | RAHIMPOUR M. | AHMADI M.M. | Issue Writer Certificate

Keywords

AbutmentQ1

Clear WaterQ1

Erosion ControlQ1

Local ScourQ2

Rectangular CollarQ1

Abstract

Introduction: Local Scour around piers and bridge Abutments is one of the reasons for instability and destruction of the bridges. Local Scour of a bridge foundation is almost inevitable as far as rivers are concerned. There are generally three types of scours that affect the performance and safety of bridges: Local Scour, contraction scour, and degradational scour. During the last decades, different arrangements were proposed to protect bridges against Local Scour. The arrangements for Local Scour at bridge piers can be grouped in two categories: armoring devices and flow-altering devices. Flow altering devices that have been used to protect piers against Local Scour include protecting piles placed upstream of the pier, Iowa vanes, and flow deflectors attached to the pier, such as collars. This study addresses the effectiveness of collars on scouring reduction around Abutments and pier bridges. Despite the availability of various studies about the effects of collar on scour at bridge pier and Abutment (such as Laursen & Toch, 1956; Mashahir & Zarrati, 2002; Kayaturk, 2005 and Khozeymehnezhad et al., 2014), and due to importance of bridges structures, further laboratory investigations are needed to explain the different aspects of collars interactions with Abutment and piers scouring phenomena. So the purpose of this study was to study the effects of different sizes of collars on a rectangular Abutment and their location to the surface of the sedimentary Abutment on bridge group piers scour reduction at the presence of debris...

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APA: Copy

KARIMI, M., QADERI, K., RAHIMPOUR, M., & AHMADI, M.M.. (2020). Laboratory Investigation of Effect of Collar on Scour at Bridge Piers Group and Abutment in the Presence of Debris. IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH , 21(78 ), 99-116. SID. https://sid.ir/paper/406391/en

Vancouver: Copy

KARIMI M., QADERI K., RAHIMPOUR M., AHMADI M.M.. Laboratory Investigation of Effect of Collar on Scour at Bridge Piers Group and Abutment in the Presence of Debris. IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH [Internet]. 2020;21(78 ):99-116. Available from: https://sid.ir/paper/406391/en

IEEE: Copy

M. KARIMI, K. QADERI, M. RAHIMPOUR, and M.M. AHMADI, “Laboratory Investigation of Effect of Collar on Scour at Bridge Piers Group and Abutment in the Presence of Debris,” IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH , vol. 21, no. 78 , pp. 99–116, 2020, [Online]. Available: https://sid.ir/paper/406391/en

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