Hydrodynamic modelling of a sea-crossing bridge in the Maldives

‘Gaadhoo Koa Channel’ is an atoll pass located in the southern tip of Male Atoll, Maldives, which separates the capital city, Male and the main international airport Hulhule island. The Gaadhoo Koa channel is known for its strong tidal flow and strong swell waves and is located in a strategic area w...

Full description

Saved in:

Bibliographic Details
Main Author:	Shiraz, Hassan
Format:	Thesis
Language:	English
Published:	2019
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/81014/1/HassanShirazMSKA2019.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.81014
record_format	uketd_dc
spelling	my-utm-ep.810142019-07-24T03:05:52Z Hydrodynamic modelling of a sea-crossing bridge in the Maldives 2019-01 Shiraz, Hassan TA Engineering (General). Civil engineering (General) ‘Gaadhoo Koa Channel’ is an atoll pass located in the southern tip of Male Atoll, Maldives, which separates the capital city, Male and the main international airport Hulhule island. The Gaadhoo Koa channel is known for its strong tidal flow and strong swell waves and is located in a strategic area which includes the main shipping lane for Male port and also marine traffic lanes connecting both Male and Hulhule with nearby inhibited islands and tourist resorts. Recently, a water crossing bridge has been constructed across the channel connecting these two islands. As a result, 21 bridge piers have been built across the channel which can result in potential changes of the flow regime in the vicinity of the bridge. This project report presents a numerical modelling study to investigate the hydrodynamic impact of the bridge piers in the Gaadhoo Koa channel. Various different software used for hydrodynamic modelling were explored and Delft3D-FLOW software was chosen. The model results were calibrated against water level data from Hulhule station and finally model simulations were run to assess the hydrodynamic impact of the bridge piers. The results indicated that the flows in the close vicinity of the bridge were reduced with the introduction of bridge piers. Also, the magnitude of flow velocity reduced around bridge piers and increased in between bridge piers. Furthermore, the overall velocity distribution in the northern region from the bridge axis showed a decreased pattern while the southern regions showed an increased pattern: peak velocity in the northern region decreased by 7.3 % 500 m from bridge axis while peak velocity in the southern region raised by 33% 500 m from bridge axis. Based on these findings, it can be considered that the introduction of bridge piers can have a considerable impact on the hydrodynamic conditions of Gaadhoo Koa atoll pass. 2019-01 Thesis http://eprints.utm.my/id/eprint/81014/ http://eprints.utm.my/id/eprint/81014/1/HassanShirazMSKA2019.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:125185 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Civil Engineering Faculty of Engineering - School of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Shiraz, Hassan Hydrodynamic modelling of a sea-crossing bridge in the Maldives
description	‘Gaadhoo Koa Channel’ is an atoll pass located in the southern tip of Male Atoll, Maldives, which separates the capital city, Male and the main international airport Hulhule island. The Gaadhoo Koa channel is known for its strong tidal flow and strong swell waves and is located in a strategic area which includes the main shipping lane for Male port and also marine traffic lanes connecting both Male and Hulhule with nearby inhibited islands and tourist resorts. Recently, a water crossing bridge has been constructed across the channel connecting these two islands. As a result, 21 bridge piers have been built across the channel which can result in potential changes of the flow regime in the vicinity of the bridge. This project report presents a numerical modelling study to investigate the hydrodynamic impact of the bridge piers in the Gaadhoo Koa channel. Various different software used for hydrodynamic modelling were explored and Delft3D-FLOW software was chosen. The model results were calibrated against water level data from Hulhule station and finally model simulations were run to assess the hydrodynamic impact of the bridge piers. The results indicated that the flows in the close vicinity of the bridge were reduced with the introduction of bridge piers. Also, the magnitude of flow velocity reduced around bridge piers and increased in between bridge piers. Furthermore, the overall velocity distribution in the northern region from the bridge axis showed a decreased pattern while the southern regions showed an increased pattern: peak velocity in the northern region decreased by 7.3 % 500 m from bridge axis while peak velocity in the southern region raised by 33% 500 m from bridge axis. Based on these findings, it can be considered that the introduction of bridge piers can have a considerable impact on the hydrodynamic conditions of Gaadhoo Koa atoll pass.
format	Thesis
qualification_level	Master's degree
author	Shiraz, Hassan
author_facet	Shiraz, Hassan
author_sort	Shiraz, Hassan
title	Hydrodynamic modelling of a sea-crossing bridge in the Maldives
title_short	Hydrodynamic modelling of a sea-crossing bridge in the Maldives
title_full	Hydrodynamic modelling of a sea-crossing bridge in the Maldives
title_fullStr	Hydrodynamic modelling of a sea-crossing bridge in the Maldives
title_full_unstemmed	Hydrodynamic modelling of a sea-crossing bridge in the Maldives
title_sort	hydrodynamic modelling of a sea-crossing bridge in the maldives
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Civil Engineering
granting_department	Faculty of Engineering - School of Civil Engineering
publishDate	2019
url	http://eprints.utm.my/id/eprint/81014/1/HassanShirazMSKA2019.pdf
_version_	1747818293132001280

Hydrodynamic modelling of a sea-crossing bridge in the Maldives

Similar Items