- Project location: Kien Giang Beach – Phu Quoc, Kien Giang Province, Vietnam
- Scope of work: Construction of offshore piling PHC D700 & D800 (27-31km from shore)
- Duaration time: May-2019 to June 2020
- Equipment used:
- 1800T barge + 150T crawler crane, 8T diesel pile hammer, 60-90kw vibrating hammer, professional staff, 80T crane barge without pile.
The 220kV Kien Binh – Phu Quoc line is the first 220kV cross-sea line in Vietnam and the whole Southeast Asia region with a length of 80.44km.
The sea route is 64.7 km long with 117 pillars, each pillar is a giant block of steel and concrete structure.
Each steel pillar is a structure 51 – 87 meters high with a weight of 54 to 114 tons, placed on a square concrete block foundation with an average floor area of 400 m2.
The pier foundation is placed on a concrete pile system consisting of 56 – 72 prestressed piles with a diameter of D800mm.
Each pile has a diameter of 60-80 cm, is over 31 meters long, can withstand seawater, and is planted 20 to 50 meters deep under the sea. The average distance between pile positions at sea is 600 meters.
The entire electric pole system is manufactured and processed in Vietnam from high-strength steel, hot-dip galvanized, with an outer paint layer that can withstand the effects of sea salt.
The project is designed with 2-circuit iron towers. The pile system is also manufactured in Vietnam, in which the foundation is made of reinforced concrete that can withstand the impact of sea waves in all weather conditions. The project is designed, managed, built and executed by a team of Vietnamese engineers and workers. All main construction materials of the project are domestically produced in Vietnam.
