Page 169 - Bridge and Highway Structure Rehabilitation and Repair

144 SECTION 2 STRENGTHENING AND REPAIR WORK

Figure 4.1 Varying boundary conditions at skew slab edges.

radius of curvature has certain sharpness. Plan of curved decks with and without skew edges
(Figure 4.2). Software such as SAP 2000, DESCUS, BSDI or STRUDL can be used.
4. Vertically curved decks.
When alignment of a highway is on a vertical curve, the bridge deck geometry follows
the curvature. It can be a hogging curvature (an arch) or sagging curvature (an inverted
arch). Since the degree of curvature affects sight distance and speed while traveling, super

Abutment

Concave Curved Deck with Skew Boundries

Abutment

Convex Curved Deck with Skew Boundries
Figure 4.2 Plan of concave and convex decks.