Substructure


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substructure

[¦səb′strək·chər]
(civil engineering)
The part of a structure which is below ground.

Substructure

The foundation and footings as opposed to the superstructure.

Substructure

 

(or subboundary structure), in metals, the internal structure of grains characterized by the type, number, and arrangement of lattice defects.

In undeformed metal, the grains consist of blocks (subgrains) that are misoriented relative to one another by angles of the order of minutes of arc; the blocks are separated by subboundaries. The shape, size, and angular misorientation of the subgrains, as well as the length of the subboundaries, are important characteristics of metal substructure. The subgrains contain dislocations, which form arrays or are in a disordered arrangement. The arrangement of dislocations depends on the nature of the material and the “history” of the sample; for example, for small degrees of deformation, dislocations are concentrated in slip planes.

With increasing deformation in such metals as aluminum or iron, the dislocations form complex spatial networks. The type, structure, and arrangement of the dislocation arrays and the density of dislocations are also characteristic of metal substructure.

V. IU. NOVIKOV

substructure

The foundation or understructure of a building; supports the superstructure.
References in periodicals archive ?
Arup's ongoing support during the fabrication and installation phase of the project, ensured that the substructure design was implemented safely and efficiently.
Extensive computer modeling was used in all aspects of the building design including the deep basement walls with high soil and surcharge loads, the substructure slabs with open and sloping diaphragms translating extraordinary lateral soil loads, NIH caliber vibration resistant lab floors, and high-bay post-tensioning design.
0 (McNeel North America; Seattle, Washington) to design the connecting substructure and the mold for silicone processing.
The development of new materials as well as the optimization of classical materials requires modelling, more closely related to the substructure of the materials under consideration.
The conditions of formation of the twinned substructure of the vacuum condensates of the FCC metals and the factors which may influence the thickness of the twinned interlayer is (density of the twinned boundaries) have been investigated in (6), (7).
The group's experience in excavation and substructure work is extremely strong and we will continue to concentrate on large-scale contracts.
The 2mm thick aluminium sheeting is fixed with stainless-steel bolts and PVDF washers on a substructure that was little more than a series of 20 x 60mm timber slats.
The Ingres Grid Option is a more flexible solution as it allows the LiveTime repository database nodes to attach to the storage substructure for more robust failover.
For the sonic boom research, a Navy F-5E was outfitted with a specially shaped ``nose glove'' and the addition of aluminum substructure and composite skin to the underside of the fuselage.
In addition, a NIST scientist completed dynamic measurements of a representative high-speed spindle to be used with a NIST-developed algorithm, called receptance coupling substructure analysis, to select the appropriate tooling and machining parameters prior to delivery of the machine.
NMOC) contracted a Malaysian firm Wednesday to build a giant platform substructure in its gas field in the South China Sea.
Once completed, the information from the two surveys will provide a complete model of the basin's substructure.