TY  - BOOK
AU  - Chang,Sin Zee
AU  - Wang,Tsan-Wen
AU  - Suphat Vongvisessomjai,
AU  - Tawatchai Tingsanchali, 
AU  - Preecha Kamronrithisorn, 
ED  - RSEA, R.O.C., 
TI  - The area of scour hole around bridge piers
T2  - Thesis
PY  - 1987///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Scour at bridges
N1  - A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology; Thesis (M.Eng.) - Asian Institute of Technology,1987
N2  - The purpose of this research is to study the area of  scour hole around the bridge pier. One of major causes of  bridge foundation failures is the scour holes created by  flowing water around the bridge piers. In order to produce a  safe and economical design of bridge protection, the engineer  needs to make an accurate prediction to the area of the scour  hole around the bridge piers.  This study is experimental work using physical models  matched with three sizes of sands (coarse sand , median sand  and fine sand ) and variation of flowing conditions, considering the c l ear-water flow , change the angles of attack  from an aligned pier. Four cylindrical piers and five blunt-nosed piers with five length to width ratios are tested.  Theoretical analysis shows that the area of scour hole  around the bridge pier is a function of pier Froude number ,  pier Reynolds number , pier dimension and bed material .  Experimental results show good agreement with the theoretical  consideration. A general formulae for design purposes for  various influencing factors (flow , pier and sand ) to the area  of scour hole around the pier have been derived. Also, a  simplified formulae has been proposed to compute the area of  protection around the bridge piers are included
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B19424
ER  -