Introduction
The Form traveler is the main equipment in the cantilever
construction method, According to the structural form can be divided into
trussed type(as diamond, triangle), Cable-stayed type, cable-stayed type and
mixed type.We are generally used the formtraveler cantilever construction plan
when the bridge crossing the mountain valley, river channel and vehicle or ships
impassable.
Our company has eight patents in the formtraveler design,
production and construction and our formtraveler which have 3 times
technological innovation since was produced by our Company:
BY-I Group bolts
structure of Formtraveler
BY-II Pin-jointed structure of
Formtraveler
BY-III Pin-jointed with hydraulic driving systems of
Formtraveler
Specifications
traveler form
1 Material: Q235 or
Q345
2 Firm and stable, little deformation
3 Cast-in-place
Traveler
Form
There are 4 types of form traveler: truss type (including horizontal
chord with no counterweight, rhombus, triangular, bowstring, etc.), cable-stayed
(including triangular and pre-stressed), profiled steel and hybrid according to
form of structure.
The rhombic form traveler designed and manufactured by
Sanbo consists of main trusses, hanging system, anchoring system, travelling
system and bottom formwork. Constructors placing 2-4 meters each time, and after
the bridge is hardened and reaches adequate strength, hydraulic equipment will
push the form travelers forwardly, then a new section of bridge is
casted.
Construction process of cast -in-place cantilever method
Form
travelers installation-Prestressing bottom panel & outer panel
adjusting-fixing bottom panel-vertical prestressed reinforcement & piping
installation- inner form & bulkhead panel installation-top rebars
colligation/ lashing-top prestressed piping installation-concrete casting-
curing - Steel strand inserting - stressing work - concrete grout pressing -
Formwork traveler moving- forwarding to next segment.
