Effect of Bridge Pier Shape on Scour Depth at Uniform Single Bridge Pier
Journal Title: Mehran University Research Journal of Engineering and Technology - Year 2018, Vol 37, Issue 3
Abstract
Bridge pier scouring may lead to the bridge failure and the shape of bridge pier itself is one of the main factor to control scouring around bridge pier. The amount of sediment which is removed from the boundary of bridge pier is called bridge pier scouring and the depth up to which sediment removed is called scour depth. Scouring results, the exposure of foundation, eventually leading to bridge failures. Assessment of the maximum scour that can be faced by pier has a vital role in the design of bridge foundation. Different techniques are used to minimize the scouring effect in order to control the bridge failure. In this study effect of bridge pier shape on scouring was checked on four different shape i.e. circular, oval, square and octagonal. Each pier shape was tested against three different values of flows i.e. 16, 22.50 and 29.50 liter/sec. Uniform bed material of standard deviation (g = 1.21) and median size (D50 = 0.28 mm) was used for all tests. Scour is measured with the help of point of gauge and bed is levelled before every experiment. Experimental results show that minimum scour is observed for octagonal bridge pier and maximum for square bridge pier while circular and oval faced intermediate scour depth relative to square and octagonal bridge pier. It is concluded that scour has reduced to 22% when octagonal pier was used compared to circular one.
Authors and Affiliations
G. Murtaza, H. N. Hashmi, U. A. Naeem, D. Khan, N. Ahmad
Keywords
Related Articles
- EP ID EP304678
- DOI 10.22581/muet1982.1803.08
- Views 88
- Downloads 0
A Model of Adaptive E-Learning in an ODL Environment
In recent years, technology enabled learning also called e-learning is penetrating in the educational sector and its use is increasing especially in ODL (Open and Distance Learning). But a majority of the e-learning syst...
A Proposed Supergrid Model for National Transmission Network of Pakistan
Pakistan is facing a severe energy crisis of its time with significant generation deficit in recent years. The future plan shows hydro and thermal coal generation as major contributor and Wind power to replace Thermal-oi...
Comparative Study of White Layer Characteristics for Static and Rotating Workpiece during Electric Discharge Machining
EDMed (Electric Discharge Machined) surfaces are unique in their appearance and metallurgical characteristics, which depend on different parameter such as electric parameters, flushing method, and dielectric type. Conven...
Numerical Simulation of Mixing of Effluent through Porous Media: The Effects of Local Inertia on the Flow
The steady–state analytical and numerical solutions are obtained for the mixing of effluent with Newtonian fluid in subsurface. The problem presented in this research work is flow through a channel packed by homogeneous...
Analysis and Development of Triangular Gasket Diagonal Slot Embedded Fractal Patch Antenna for Multiband Wireless Applications
This paper presents novel reduced size diagonal slot embedded Triangular Gasket fractal patch antenna for multiband wireless applications. The diagonal slot geometry is embedded in triangular patch antenna for initial si...