Based on the working mechanism analysis, the area ratio of web member
to chord and the stiffness ratio of coupling beam to shear wall are proposed for the evaluation of seismic performances of steel truss CBs.
Caption: FIGURE 17: Relationship between stress and strain of the web member
. (a) 1 m wall depth before the member buckling ([[lambda].sub.E] = 7.4).
The axial displacement of the oblique web member
is given by
In the process when the load is increased to 2000 kN, cracks are seen on concrete for the first time, mainly on the enlarged cross section, between two web members
and at the sectional corner of the compressive web member
The trusses come in various shapes and sizes, and often include long, slender compression web members
. When a compression web member
exceeds the allowable stress for a specific grade and size of the member, lateral bracing is introduced to reduce the effective buckling length of the web.
Waltz  studied the design requirements for bracing a 2 by 4 compression web member
at one brace support point at the center of the web.
A pultruded HFRP tube and GFRP tube were used for the lower chord members and diagonal web members
It acts as a vertical truss, with the columns as chords and the braces and girders as web members
. The most efficient and conventional type of bracing, using full diagonals, is also the most obstructive to architectural plan.
Even where distance would seem to preclude it, WEB members
still relied on some use of relational mechanisms.
The major failure occurred at web members
of trusses between loading points and supports, i.e., within the range of shear span.
work together on many schemes, linked by a common theme - power projects, for example.
The conventional three categories of basal, intermediate, and top species were used to classify web members
. Basal "species" included decomposing organic material and its associated microorganisms which we defined as detritus, microinorganic material and associated microorganisms (MIP), and vascular plant material.