36m Modular Jackup Barge

1. GENERAL

The platform is a modular type self-elevating unit. The jacking system on the four coners to be controlled by one hydraulic pressure unit which is located on the deck. The hull is made of the ISO standard 20ft and 40ft container type units, which are dismoutable and easy for transportation by sea, river, railway or road. There is no pipe line in the hull body.

The platform is designed for port construction, bridge building, offshore support and so on.

2. MAIN DIMENSIONS

Length 35.586m

Breadth 21.982m

Height 2.896m

Draught 1.9m

Variable load 550t

Power of lift 1200t

Deck area 650m²

Deck load 5t/m²

Leg diameter 1.5m

Leg length(including spud can) 47m(48.5m)

Spud can 5.8X4.2m

Lift type Hydraulic

Lift speed 14m/hr

Winch 4sets

Working water depth 30m

Air gap 5m

Wind speed 25.8m/s

Surface current 1.45m/s

Bottom current 0.82m/s

Wave height 3m

Wave period 5s

Min. atmosphere temperature -15^oC

Min. water temperature -2^oC

Service area offshore

Design life 25 years

3. HULL

The hull structure is made of 19 units with ISO 40ft container size, 8 unites with ISO 20ft container size, 4 leg sections and 4 jackhouse sections. All the units to be void tanks. Each unit consists of top plate, side plate, bottom plate, frames, stiffeners and girders which are high strength steel and well welded. The bolts to be applied for the upper side connection and the pins to be applied for the bottom side connection for the longitudinal direction. The transverse connection is same as longitudinal. The bolt joint to be used for connecting the jackhouse unit with the hull.

4. LEG AND SPUD CAN

There are 4 legs on the rectangular corners. Each leg is made of 4 sections. The legs to be watertight. The connection of each section to be bolt. Each leg to have one spud can with dimension of 5.5X4.3X1.5m(LxWxH). The material of leg and spud can to be high strength steel.

5. JACKING SYSTEM

The jacking system to be hydraulic. Ther are 4 lifting hyraulic cylinders and 4 pin driving hydraulic settings for each leg. All the hydraulic cylinders to be controlled by one hydraulic unit and working synchronously. The hydraulic unit to be a standard module and cooled by air. The data of the hydraulic system of each leg to be as bellow:

Rated lifting load 400t

Sustain load 800t

Pin distance 1.5m

6. PROGRESSING

Under construction, to be delivered in May, 2014