Dimakopoulos, A. and Allsop, W. and Chandler, I. and Pullen, T.A. (2024) A new formula for pressure transmission inside rubble mound breakwaters protecting land reclamations. In: ICCE 2024 (38th International Conference on Coastal Engineering), 8-14 September 2024, Rome, Italy.
Full text not available from this repository.Abstract
Recent land reclamation projects where maximization of land use is crucial have resulted in the appearance of types of coastal defenses that have not been extensively studied. Rubble mound breakwaters with open filters or geotextiles are increasingly used in reclamation projects. Due to placement of landfill material (e.g. dredged sand with silt) close to the rubble mound, these structures are potentially vulnerable to internal erosion and material loss through the coarser breakwater layers, a process which is often characterized as suffusion. Several past studies have highlighted these issues (Cantelmo et al 2011; Polidoro et al 2015). Incipient of sediment motion in the landfill area is highly dependent of the pressure gradients developing and reliable prediction of pressures is of great importance. Some available methods (Burcharth et al 1999, Troch 2002, Muttray and Oumeraci (2005), Vanneste and Troch 2012, Tomasicchio et al 2020) are reliable for generic rubble mound breakwaters, but have weaknesses with respect to breakwaters protecting land reclamation areas, where a reflective interface is formed. These weaknesses are discussed in Dimakopoulos et al (2023). This work presents a methodology for modifying existing formulas for estimating internal pressures in rubble mound breakwaters in the presence of reflective surfaces. The methodology follows a relatively simple concept and is applied to correct predictions of the formula proposed by Burcharth et al (1999). The corrected formula is compared against numerical modelling predictions published in Dimakopoulos et al (2023). Comparison and further verification of the formula will be performed following additional numerical (CFD) model simulations and experimental data.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | Coasts > Coastal structures Maritime > General |
| Divisions: | Coastal Maritime |
| Depositing User: | Helen Stevenson |
| Date Deposited: | 07 Jan 2025 15:06 |
| Last Modified: | 07 Jan 2025 15:06 |
| URI: | http://eprints.hrwallingford.com/id/eprint/1667 |
Actions (for site administrators only - login required)
 |
View Item |
