Peculiarities of Reconstruction Work …
23
span are box-shaped, of rectangular cross-section, 2300 mm wide and 3100 and
3600 mm high, depending on the span. The lateral stiffness of the superstructure is
ensured by stiffening diaphragms and crossbeams placed inside the girders with 4.0 m
pitch, which corresponds to the pitch of the diaphragms. The orthotropic deck of the
carriageway consists of steel deck plate (12 mm thick sheet), longitudinal stiffeners
of trapezoidal closed cross-section with a pitch of 600 mm and cross-beams with a
pitch of 4000 mm.
And reinforcement of the chords of adjacent continuous superstructure spans (as
considered above) is executed by welding additional plates to the chords of the main
girders.
In case of destruction of the piers, their reconstruction is supposed to be executed
of steel lattice structures consisting of I-sections and angle sections. Proposed design
solution for lattice structures is shown in Fig. 8.
Fig. 8 Renovation of destroyed pier
23
span are box-shaped, of rectangular cross-section, 2300 mm wide and 3100 and
3600 mm high, depending on the span. The lateral stiffness of the superstructure is
ensured by stiffening diaphragms and crossbeams placed inside the girders with 4.0 m
pitch, which corresponds to the pitch of the diaphragms. The orthotropic deck of the
carriageway consists of steel deck plate (12 mm thick sheet), longitudinal stiffeners
of trapezoidal closed cross-section with a pitch of 600 mm and cross-beams with a
pitch of 4000 mm.
And reinforcement of the chords of adjacent continuous superstructure spans (as
considered above) is executed by welding additional plates to the chords of the main
girders.
In case of destruction of the piers, their reconstruction is supposed to be executed
of steel lattice structures consisting of I-sections and angle sections. Proposed design
solution for lattice structures is shown in Fig. 8.
Fig. 8 Renovation of destroyed pier