Investigating the Behavior of an Onshore Wall and Trench Combination Ahead of a Tsunami-Like Wave
This study investigates a wall and trench combination to identify its benefits as a defense measure against an overtopping tsunami-like wave. The study focuses on several arrangements and geometries of a wall and trench combined structural system, located on the shoreline. The structural system is a...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-08-01
|
| Series: | Geosciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3263/10/8/310 |
| _version_ | 1797558538557456384 |
|---|---|
| author | Akalanka Silva Susumu Araki |
| author_facet | Akalanka Silva Susumu Araki |
| author_sort | Akalanka Silva |
| collection | DOAJ |
| description | This study investigates a wall and trench combination to identify its benefits as a defense measure against an overtopping tsunami-like wave. The study focuses on several arrangements and geometries of a wall and trench combined structural system, located on the shoreline. The structural system is assessed via a numerical model, which is initially calibrated by physical experiments of tsunami-like wave transformations. A dam break event is used to model a tsunami-like wave interaction with the structures. Resulted wave properties are investigated to identify the behavior of the structural system from the viewpoint of structure geometry and configuration. The results of the study clearly show that the proposed structure combination can effectively reduce the impact of tsunami-like waves, better than a single sea wall defense system. This is achieved by reducing both wave run-up and wave induced current velocities at the lee side of the structure. |
| first_indexed | 2024-03-10T17:31:51Z |
| format | Article |
| id | doaj.art-aafd2727220040bbb0abc60020e54c33 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-10T17:31:51Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-aafd2727220040bbb0abc60020e54c332023-11-20T09:59:15ZengMDPI AGGeosciences2076-32632020-08-0110831010.3390/geosciences10080310Investigating the Behavior of an Onshore Wall and Trench Combination Ahead of a Tsunami-Like WaveAkalanka Silva0Susumu Araki1Department of Civil Engineering, Osaka University, Osaka 565-0871, JapanDepartment of Civil Engineering, Osaka University, Osaka 565-0871, JapanThis study investigates a wall and trench combination to identify its benefits as a defense measure against an overtopping tsunami-like wave. The study focuses on several arrangements and geometries of a wall and trench combined structural system, located on the shoreline. The structural system is assessed via a numerical model, which is initially calibrated by physical experiments of tsunami-like wave transformations. A dam break event is used to model a tsunami-like wave interaction with the structures. Resulted wave properties are investigated to identify the behavior of the structural system from the viewpoint of structure geometry and configuration. The results of the study clearly show that the proposed structure combination can effectively reduce the impact of tsunami-like waves, better than a single sea wall defense system. This is achieved by reducing both wave run-up and wave induced current velocities at the lee side of the structure.https://www.mdpi.com/2076-3263/10/8/310tsunamiseawallonshoreinundationwall and trench system |
| spellingShingle | Akalanka Silva Susumu Araki Investigating the Behavior of an Onshore Wall and Trench Combination Ahead of a Tsunami-Like Wave Geosciences tsunami seawall onshore inundation wall and trench system |
| title | Investigating the Behavior of an Onshore Wall and Trench Combination Ahead of a Tsunami-Like Wave |
| title_full | Investigating the Behavior of an Onshore Wall and Trench Combination Ahead of a Tsunami-Like Wave |
| title_fullStr | Investigating the Behavior of an Onshore Wall and Trench Combination Ahead of a Tsunami-Like Wave |
| title_full_unstemmed | Investigating the Behavior of an Onshore Wall and Trench Combination Ahead of a Tsunami-Like Wave |
| title_short | Investigating the Behavior of an Onshore Wall and Trench Combination Ahead of a Tsunami-Like Wave |
| title_sort | investigating the behavior of an onshore wall and trench combination ahead of a tsunami like wave |
| topic | tsunami seawall onshore inundation wall and trench system |
| url | https://www.mdpi.com/2076-3263/10/8/310 |
| work_keys_str_mv | AT akalankasilva investigatingthebehaviorofanonshorewallandtrenchcombinationaheadofatsunamilikewave AT susumuaraki investigatingthebehaviorofanonshorewallandtrenchcombinationaheadofatsunamilikewave |