A Study of Applying CKPB on Protection of Bridge Piers for Tai-Po Bridge Case

• Main Authors: Seu-HsuehLin, 林思學
• Other Authors: Chin-Kun Huang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/21411291700036007493

碩士 === 國立成功大學 === 水利及海洋工程學系專班 === 100 === Abstract:This paper will use the Cheng-Kung porous basket (CKPB) structure to reduce the pier scour depth. The method tested and verified is a good effect to protect the pier against scour. Now, we will apply the CKPB to the Tai-Po Bridge located at the Jishuei River. The CKPB is set upstream the pier with a triangle shape according to the flow direction. The set of the CKPB has six piles and 2 m height alignment of stereoscopic triangle, its bottom breadth 4 m, high 4 m, the usage H type steel(200*200) assembles into structure Each high 2 m, the diameter 90 cm, the bottom establishes to turn to move to roll stalk increment Rao to flow a function. From 2009 to 2010 it was gone many large flows and two typhoons, Morakot and Fanapi. The results show a better protection for the piers against scour. The piers can be impacted with a low velocity when the flow passes through the CPKB. The level of the bed bottom at pier is higher than at the main channel. The high velocity flow passes through among two piers and the low velocity flow happens at the upstream pier. The piers are stuck nothing because many drifters are obstructed by the CKPB.