Characteristics of Prestressed concrete cylinder pipe(PCCP)
1, the advanced design, safety
It will be an integrated analysis of internal pressure and external load together design. The method takes into
account the wall of elastic and inelastic deformation and safely limit the concrete compressive stress, this flexibility
allows the design engineer based on the actual situation of the pipeline the most economical, most reliable pipe
2, to withstand high intemal pressure and extemal load
PCCP used as the test by hydraulic cylinders, solve the general problem of seepage of concrete pipe there, so it
can withstand high working pressure up to 5.0lVlPa; because PCCP can be fully used in the design resistance of
concrete compressive strength, so the pipe can withstand more than other external loads.
3, the joint sealed
PCCP joints using steel socket, jack socket and with the clearance face diameter is O-0.6mm. Socket is shaped
with a groove tailor-made steel, seals placed in the groove, which are linked closely together to ensure that the
interface forms the interface with excellent water tightness
4, double rubber ring joints
Double apron of interface not only to ensure an excellent seal, but also so that the tube can be tested in the
installation interface to install the qualified or not.
5, on the ground adaptability and seismic performance
PCCP joints rigid and flexible interface, has some degree of rigidity, has a certain flexibility to be able to turn a
certain angle, so the foundation to adapt to changes in performance (if not uniform settlement or earthquakes) than
other pipe is good.
6, higher capacity with water
PCCP inner surface is very smooth, does not form a tumor section, surface scaling, the pipeline running through
the service period to maintain a high water capacity
7, good corrosion resistance
As the composition of all steels were PCCP good dense concrete of the package, socket by the antiseptic
treatment of the exposed parts of the installation and use of its seal pouring mortar; concrete or cement mortar to
provide a high alkaline environment will PCCP internal steel passivation, to prevent corrosion.
8, some joints can be welded to resist the thrust
When the construction site is not convenient to do concrete buttress to resist the thrust, or by comparison when
the economy is not doing concrete buttress, PCCP corner by a number in the iield of steel pipe welded interfaces
in order to resist the thrust.
9, the economic security of the pipeline operation
PCCP unique form of composite structure and the unique interface, making the body of this pipe will not be leaking
pipe, leaking joints, nor will there be burst pipes, broken pipes and so on. Water line in the long run, the loss of
small pipes, water and low cost.
10, low cost, long life, good social benefits
PCCP's consumption of steel pipe to save 70% than for the straight-type, easy transportation, and steel connector
makes transportation and installation process without loss. Degree of narrow trench excavation during installation,
interface shallow pit work, easy installation, and lower total cost, to meet the impemrieability good premise, PCCP
life of up to 50 years, their social benefits is good.