HZ Combined Walls
DESCRIPTION

Introduced by Arcelor in 1972, the HZ king pile was rolled with a ‘bulb’ at the end of the flanges on which a connector will be threaded. In 2008 ArcelorMittal introduced the improved HZM range of king piles, the HZM king pile is milled post rolling to accommodate the connectors on a range of beams that provide increased capacity, design flexibility and efficiency.

The elements of a HZ combined wall system are the king piles, connectors, and AZ sheet piles installed as intermediate infill elements between the king piles which act as the primary structural supports. The HZ system can incorporate single beams, double beams, or continuous beams. The combination of different beam configurations with various AZ sheet pile infills offers a wide range of design alternatives. All combinations are based on the same principle: structural supports comprising one or more HZM king pile section(s) alternating with intermediate double AZ sheet pile sections.

Structurally, the HZ king pile solution fulfills two functions:

  • as retaining members, they resist horizontal loads resulting from the earth and hydrostatic pressures
  • as bearing piles, they resist vertical superimposed loads

The intermediate sheet piles have only an earth-retaining and load transfer function and they may be shorter than the king piles.

 

HZM King Pile

HZM King Pile

 

Section Dimensions Suitable Connector
h mm h1
mm
w
mm
tmax
mm
s
mm
r
mm
HZ 880M A 831.3 803.4 458 29.0 13.0 20 RZDU 16 RH 16
HZ 880M B 831.3 807.4 460 29.0 15.0 20 RZDU 16 RH 16
HZ 880M C 831.3 811.4 460 29.0 15.0 20 RZDU 16 RH 16
HZ 1080M A 1075.3 1047.4 454 29.0 16.0 20 RZDU 16 RH 16
HZ 1080M B 1075.3 1053.4 454 29.0 16.0 20 RZDU 16 RH 16
HZ 1080M C 1075.3 1059.4 456 29.0 18.0 20 RZDU 16 RH 16
HZ 1080M D 1075.3 1067.4 457 30.7 19.0 20 RZDU 16 RH 16
HZ 1180M A 1075.3 458 34.7 20.0 20 RZDU 16 RH 16
HZ 1180M B 1075.3 458 36.7 20.0 20 RZDU 16 RH 16
HZ 1180M C 1075.3 459 38.7 21.0 20 RZDU 16 RH 20
HZ 1180M D 1075.3 460 40.7 22.0 20 RZDU 16 RH 20

This site contains the specification information of HZM sections only, information on the HZ sections or combinations can be provided by contacting J Steel.

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