Effect of Bridge Piers Locations and Flow Intensity on Morphological Change in a 180-Degree River Bend

Bridges when it crossing rivers often required multiple piers for support. One of has a limited investigation is the impact on scouring and morphological aspects bridge sharp-bend river. Consequently, crucial to investigate hydraulic behavior water flow in these areas due presence piers. In present study, an experimental program was conducted laboratory flume featuring two-pier within 180-degree (sharp) bend accomplish this. The were strategically positioned at 90 150 degrees bend. results indicated that 90o, under threshold intensity condition, led significant local scour depths around Specifically, found be 1.80 1.15 times width pier close outer inner banks, respectively. discharge increased from 240 l/min 280 while maintaining same 0.85, resulting symmetric depth near bank. contrast, response 150o considerably lower; with l/min, measured 0.65 1.18 piers, Similar bed morphology observed two values (280 l/min) 0.85. findings showed increase or decrease value, constant intensity, did not influence its extension bank, indicating component more than discharge.