Results 41 to 50 of about 424 (174)

Local scour at group of bridge piers founded in gravel bed in staggered arrangement

Results in Engineering
Local scour around bridge piers is the common cause of undermining of bridge foundation. Many researchers have studied local scour around bridge pier in finer sediment bed.
Akash Anand, Mubeen Beg
doaj   +1 more source

Experimental Study of Local Scour around Tripod Foundation in Combined Collinear Waves-Current Conditions

Journal of Marine Science and Engineering, 2021
A series of laboratory experiments were conducted in a wave-current flume to investigate the scour evolution and scour morphology around tripod in combined waves and current.
Ruigeng Hu, Xiuhai Wang, Hongjun Liu, Yao Lu   +3 more
doaj   +1 more source

Fundamental Hydraulic Geometry Relations as an Accessible Tool for Identifying Channel Instability Over National Scales

River Research and Applications, EarlyView.
ABSTRACT The geometry of alluvial river channels can give insight into their stability, which can inform predictions of morphological change, flood risk and ecological degradation. Fundamental hydraulic geometry relations can be used to estimate the equilibrium dimensions of stable river channels by evaluating the balance between the erodibility of bed
David Whitfield, Edwin Baynes, Stephen Rice, Richard Jeffries   +3 more
wiley   +1 more source

Study of the time-dependent clear water scour around circular bridge piers

Journal of Hydrology and Hydromechanics, 2017
The local scour around bridge piers influences their stabilities and plays a key role in the bridge failures. The estimation of the maximum possible scour depth around bridge piers is an important step in the design of the bridge pier foundations.
Aksoy Aysegul Ozgenc, Bombar Gokcen, Arkis Tanıl, Guney Mehmet Sukru   +3 more
doaj   +1 more source

River Ice Processes Modelling: A Comprehensive Review

River Research and Applications, EarlyView.
ABSTRACT River ice strongly influences hydrology, hydrodynamics, and ecosystems in cold regions, with an impact on flooding, hydropower generation, navigation, and aquatic habitats. Modeling river ice processes is therefore essential for both scientific understanding and operational management.
Harusha Abeynayake, Heli Yu, Epari Ritesh Patro, Ali Torabi Haghighi   +3 more
wiley   +1 more source

Equilibrium scour morphology downstream of rock sills under unsteady flow conditions

E3S Web of Conferences, 2018
The present study aims to analyze the equilibrium scour morphology occurring downstream of rock-made sills with different shapes, under different inflow conditions. Namely, experimental tests were conducted under both steady and unsteady flow conditions.
Pagliara Stefano, Palermo Michele
doaj   +1 more source

Experimental study on local scour around the submerged vertical circular cylinder under solitary wave action

Shui kexue jinzhan, 2019
Solitary waves can cause intense sediment movement in the coastal area,resulting in local scour around the offshore structures that use submerged pile foundations,and seriously affecting the stability of offshore structures.
CHENG Yongzhou, JIANG Song, GONG Weiliang, TANG Wen, HUANG Xiaoyun, XIA Bo   +5 more
doaj   +1 more source

Experimental Study on Local Scour and Related Mechanical Effects at River-Crossing Underwater Oil and Gas Pipelines

Advances in Civil Engineering, 2021
Among the various geological disasters that threaten the safe operation of long-distance oil and gas pipelines, water-damage disasters are numerous and widely developed.
Fan Cui, Yunfei Du, Xianjie Hao, Suping Peng, Zhuangzhuang Bao, Shiqi Peng   +5 more
doaj   +1 more source

Changing climates and environments within the complex Middle to Late Pleistocene fill of an overdeepened valley at Niederweningen, Switzerland

Boreas, EarlyView.
Glacially overdeepened valleys in the northern Alpine Foreland preserve Middle to Late Pleistocene sedimentary sequences that may serve as valuable archives for reconstructing past environmental changes in response to shifts in climate. This study presents a multidisciplinary analysis of two sediment cores from the overdeepened Wehntal Valley at ...
Johannes M. Miocic, Nigel Thew, Ruth Drescher‐Schneider, Hans Rudolf Graf, Marlu Kühn, Frank Preusser, Werner H. Schoch, Lucia Wick, Heinz Furrer   +8 more
wiley   +1 more source

Field‐based evaluation of glass cullet as a supplementary sediment source for coastal restoration

Restoration Ecology, EarlyView.
There is an ever‐increasing demand for sand to support projects like beach nourishment and dune restoration, but dredging and mining sand causes environmental damage. Demonstrating the environmental and ecological compatibility of crushed and ground glass known as cullet to support coastal restoration projects could simultaneously divert waste from ...
Lily S. Pfeifer, Charles A. Schutte
wiley   +1 more source