e-mosty December 2018 e-mosty December 2018 | Page 68

III. CONSTRUCTION METHODS IV. EXAMPLES OF CFST ARCH BRIDGES IN CHINA
Various construction methods used for CFST Arch
Bridges include: CONTINUOUS DESIGN OF CANTILEVER BEAM OF CFST
HALF-THROUGH ARCH BRIDGE: BAIWANG BRIDGE IN
SHAOGUAN, GUANGDONG PROVINCE
1) Stiffened scaffolding methods:
a) Scaffolding construction (typically through arch-
girder composite bridges)
b) Cantilever construction (typically for deck and
half-through arch bridges)
c) Swing construction (rarely used)
‘Flying-bird’ type arch bridges, half-through rigid-
framed tied arch bridges, can adopt both scaffolding
and cantilever methods.
2) Lifting of complete structure
3) Push or incremental launching
DESIGN
Baiwang bridge in Shaoguan, Guangdong Province is a
city bridge across the Bei river, as shown in Figure 8.
The total length of the bridge is 798m, and the
general layout of the 27 span bridge is 3×16m
(continuous girder of reinforced concrete hollow slab)
+ 2×16m (simply supported prestress hollow slab
girder) + 3×5m (box rib arch) + 14×16m (simply
supported prestress hollow slab girder) + 111m (CFST
half-through arch bridge) + 2×55m (box rib arch) +
2×16m (simply-supported prestress hollow slab
girder).
The half-through arch consists of three arch ribs, and
the corresponding rise span ratio is 3.33 with a net
span of 111.44m and net rise of 33.45m.
Figure 8: Overall view of Baiwang Bridge in Shaoguan, Guangdong
4/2018