F. K. Kong MA, MSc, PhD, CEng, FICE, FIStructE, R. H. Evans CBE, DSc, D ès Sc, DTech, PhD, CEng, FICE, FIMechE, FIStructE (auth.)-Reinforced and Prestressed Concrete-Springer US (1987)

408 Practical design and detailing
A B c D
"
,,.. ,..,. ,
(a) Braced frame
B c D
(b) Sub-frame
(BS 8110: cl.3.2.1.2.1.)
HGk + 1·60k
A~nlo
(c) Loading Case I
{max. load on all spans)
AFai--LHo
1'4 Gk+ 1·60k ;1·0 Gk
(d) Loading Case ll
(max.load on alternate
spans)
A
B
~ (rje)
c
~Cije)
A B c D
(e) Sub-frame: Beam AB
(BS 8110: cl.3.2.1.2.3.)
(f) Sub-frame: Beam BC
(BS 8110:cl.3.2.1.2.3.)
et fc to
(g) Continuous beam si111~lification
(BS 8110:cl.3.2.1.2.4.)
(h) Column moments
(BS 8110: cl.3.2.1.2.5.)
Fig. 11.4-1 Sub-frames for braced frame analysis (BS 8110: Clause 3.2.1.2)
columns and beams to be derived from an elastic analysis of a series of subframes.
For a braced frame, three methods of simplification may be used:
(a) Sub-frames type I (BS 8110:Clause 3.2.1.2.1). Each sub-frame
is taken to consist of the beams at one level together with the