Stability analysis of a double-row pile breakwater subjected to combined loading in Mekong Delta

Double-row pile breakwater is one of the vertical-front breakwaters using concrete piles applied in some parts of Mekong Delta. Structure of this breakwater mainly includes two rows of closely spaced piles and a rock core between them, frames are made of double-row pile that connected by reinforced concrete longitudial and transveral beam, rock core has constructed interior of it. The piles penetrate into the seabed and fasten the rock core against wave action. The geometrical size of the breakwater is smaller than traditional trapezoidal rubble-mound breakwater. It’s built on soft clay soils with low vertical loading and large horizontal loading. Some projects have been constructed and began to be effective but stability problem is not considered fully. This study presents research on analytical and numerical analysis for stability of double-row pile breakwater subjected to combined loading. On this basis, the authors developed method to calculate bearing capacity of this breakwater on soft clay soils.

1. INTRODUCTION

2. DOUBLE-ROW PILE BREAKWATER

3. STABILITY ANALYSIS

3.1. Wave forces

3.2. Analytical calculation of pile length

3.3. Numerical analysis

4. CONCLUSIONS

REFERENCES

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Goda, Y., 1974. New wave pressure formulae for composite breakwater. Copenhagen, ASCE, pp. 282 1702-1720.

Liu (2012) Analysis of wave performance through pile–rock breakwaters, Proc IMechE Part M: J Engineering for the Maritime Environment 2014, Vol. 228(3) 284–292 IMechE 2014. DOI: 10.1177/1475090212462951

OCDI (2009), Technical Standards and Commentaries for Port and Harbour Facilities in Japan, Part III, Chapter 4.

Thorsten Albers, Jan Stolzenwald: Coastal Engineering Consultancy in Ca Mau Province. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH (2015).

See detail: Stability analysis of a double-row pile breakwater subjected to combined loading in Mekong Delta

Ha Hai. NGUYEN1, Cong Manh. DUONG2

1 1 PhD candidate, Hydraulic Construction Institute, Hanoi, Vietnam. Corresponding author;
Email: ha.cloud08@gmail.com
2 Hydraulic Construction Institute, Hanoi, Vietnam

Proceedings of the 10th International Conference on Asian and Pacific Coasts
(APAC 2019) Hanoi, Vietnam, September 25-28, 2019