Case Study Of Buckingham Canal Bridge in Ongole

Case Study Of Buckingham Canal Bridge in Ongole

Abstract:

The Buckingham Canal is a 796 kilometers (494.6 mi) long fresh water navigation canal, running parallel to the Coromandel Coast of South India from Kakinada in the East Godavari district of Andhra Pradesh to Villupuram District in Tamil Nadu. The canal connects most of the natural backwaters along the coast to Chennai (Madras) port. It was constructed during British Rule, and was an important waterway during the late nineteenth and early twentieth centuries.

Now coming to the several reasons and weathering conditions the Buckingham canal is lose of its depth and width.then now a days its restoration works are going on the canal.

In location of the ongole to kothapatnam there is bridge to cross the Buckingham canal

It was constructed by the stone masonry in olden days, then it was reconstructed because of the less width and depth so that reason overcome by the construction of new bridge in that shown in below figure. It was first known as the North River by the British and was believed to be partly responsible for reducing cyclone damage to much of the Chennai - southern Andhra coastline.

The canal was used to convey goods up and down the coast from Vijayawada to Madras (now Chennai). The cyclones of 1965/1966 and 1976 damaged the canal, and it is little used and no longer well maintained. Within the city of Chennai the canal is badly polluted from sewage and industrial effluents, and the silting up of the canal has left the water stagnant, creating an attractive habitat for malaria-spreading mosquitoes. The North Chennai Thermal Power Station (NCTP) discharges hot water and fly ash into the canal. In agricultural areas south of Chennai, the former tow path along the scenic areas is used for light motorcycle and bicycle traffic. On 1 January 2001 the Government of India launched a project to prevent sewage discharge into the canal and Chennai's other waterways, and to dredge the canal to remove accumulated sediment and improve water flow.

New construction Bridge:

Ø In that bridge well foundation is taken because of the soil safe bearing capacity is very less

Ø In the foundation wash boring is adopted why because of the cohesive soils are present in that area

Ø The span of the bridge construction is 15m

Ø In the well foundation open caissons are provided

Ø Depth of the foundation is commonly in 5m

Ø The Diameter of the well foundation is 3 feet