STUDY OF KLONG WANG YAO BRIDGE FAILURE BY IRIC

Abstract

This study is a study of the failure of the Klong Wang Yao Bridge due to the 2017 floods by using the iRIC hydraulic model to analyze hydraulic behavior. Data were collected from the actual flood stain in the area and analyzed the parameters to be used in the study of the failure behavior of the bridge, divided into 4 cases, which are case 1 with no obstacles, no change in water level. Case 2 obstacles that change the river bed. Case 3 obstacles that change the river bed and erodes the river bank. Case 4 None of the water eroded the embankment and a bridge abutment size. From the 4 case studies, it is found that water flow behavior has abnormal flow. Due to an obstacle or a pier Resulting in erosion at the pier of the Khlong Wang Yao Bridge causing the failure of the bridge From the study, it is found that the design of a bridge pier to be smaller and to build an erosion protection line along the bank of the river can help prevent erosion in the area of ​​Klong Wang Yao Bridge.