- Contact Person : Ms. Cao Cathy
- Company Name : Qingdao Huanghai Air Chamber Manufacturing Co., Ltd.
- Tel : 86-532-87872929
- Fax : 86-532-87873669
- Address : Shandong,Qingdao,No.209 Tieqi Mountain RD, Chengyang District, Qingdao
- Country/Region : China
- Zip : 266000
moving rubber airbag
Application of New TechnologyConstruction preparationClean up conserve hydrocele and concrete and etc. in the caisson. Install two winches of 5T and a
guide ring in both sides of the caisson back, and carry out an operational test. Understand the use
performance of air bag, and inflatable operating procedures of air bags; Conduct empty loading
inflatable inspection on loading air bag, and the pressure reaches 0.175 MPa. Flatten and clear the
road forward, pay attention to clearing embedded pieces of iron and stone, to prevent air bag being
punctured. Mark air bag position on the caisson. Check conditions of air compressor equipment.Constructive methodsPlace 4 screw jacks of 600t respectively in the screw jack pit (place respectively on each screw jack
a piece of 0.6 x 0.6m steel plate), facing the center of caisson; Fuel and pressure screw jack, and
lift the caisson for 220 mm. According to preestablished "location map", stuff mat wood to the bottom of the caisson; Place the
mat wood even with the caisson; The mat wood is 320 mm wide, 220mm high, and 2.5m long. Lift 5 air bags with tower crane; artificially penetrate a rope in the bottom of the caisson. The air
bag location should be consistent with the location of identification. Place 5 air bags at the caisson
bottom and 2 reserve air bags in outer fore-toe. Air bag aerationFirstly install valves and barometer at both ends of the air bag, gradually inflate 5 air bags at the
bottom of the caisson, inflate air pressure to 0.08 MPa, and the inflation order is from air bags of
fore and hind toe to caisson bottom. Secondly inflate pressure to 0.122 MPa (or withdraw until the
mat wood can move). Check the tilting condition of caisson when inflating, and the order is the
same as above. Finally withdraw the mat wood.Caisson forwardTie up caisson with rope, and move it forward for about 1.5 meters with slow traction from the back
of winch, and through guide ring located in the middle of wharf. Then stuff reserve air bag, and
inflate pressure to 0.122 MPa. Reactivate the winch to tract caisson for horizontal movement of 1.5
meters, and stuff reserve air bag 2, and inflate pressure to 0.122 MPa. Repeat the operation above until the caisson moves forward within operational diameter of 1000T crane barge. Effect receivedNew technology air bag handling caisson of the wharf project took a total of 10 days, and 18
caisson handling tasks are successfully completed with eight days ahead of schedule. Analysis
based on the constructive condition: New technology air bag handling caisson is safe and feasible,
for it has broken the traditional mode of construction; especially it has a certain sense on outgo
construction with no fixed wharf and prefabrication.
moving rubber airbag