Transverse web stiffeners

Intermediate Transverse Web Stiffeners

Intermediate transverse stiffeners at regular spacing along the web of a plate girder are used to increase the buckling capacity of the web. Stiffeners provided at support points require a different design approach and these are considered in the next section. The design of intermediate transverse stiffeners in box girders adheres to similar requirements. In general, transverse stiffener cross-sections are made of hot-rolled sections and are either flats or bulb flats, angles or T-sections. The...

Design of masonry arch bridges

Springing Stone Masonry Abutment

In considering the design of masonry arch bridges it is important to remember that there are over 40 000 examples in the UK alone. Most have already exceeded the Department of Transport's design life of 120 years and therefore must be considered as an archive of good practice and proportion. Traditionally, the span to rise ratio varies from 2 1 (semi-circular) to 10 1 but is usually in the range of 3 1 to 6 1 with the 'ideal' taken as 4 1. Clearly, the shape of the intrados is of great...

Connection between deck and piers

Monolithic Construction Bridge

This may be either monolithic or bearing supported, as shown in Figure 15 Priestley et al., 1996 . Monolithic construction is normally used for slender columns and small bridges. The energy absorption capacity of this configuration is in general larger than bearing supported systems Elnashai and McClure, 1995 due to the double curvature of the former leading to potentially two plastic hinging zones, instead of one in the case of bearings. For multi-column configurations, use of monolithic...