Study on Simulation of Flow Field and Scouring Depth in River

• Main Authors: WU,CHENG-YE, 吳承燁
• Other Authors: 鄭魁香
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/95094377246430922992

碩士 === 高苑科技大學 === 土木工程研究所 === 105 === Taiwan is a narrow island, affected by topography and climatic factors, the slope of the river is very steep and the scouring of the riverbed is quite serious.It will make scour on bridge piers and will make bridge damage, the impact of transportation is very large. In this study, two-dimensional flow field was simulated by SMS for Laiser river and Checheng bridge of Pingtung County in Southern Taiwan. Simulation of scour depth and main deep trough change can verify the accuracy by the flow field. It can also provide references for related projects. In this study, simulation setup 200m length right bank and 30m*15m wave-breakers apron of Checheng Bridge to protect P1 and P2 piers.Simulation results shows that the flow speed reduced from 4m/s to 2.5m/s in right bank，but the flow speed increased from 3.7m/s to 5m/s in left bank. We can reduce the flow speed from 5m/s to 3.5m/s by adding 30*10m wave-breakers apron in left bank.