6. Solution of Vierendeel Girders

A NEW APPROACH TO PLASTIC DESIGN AND OPTIMIZATION OF PARALELL CHORD VIERENDEEL GIRDERS

This study was prompted by the need to elaborate on recent developments in plastic design of, parallel chord Vierendeel girders (VG). The paper proposes exact, general solutions to two novel classes of VG under practical loading conditions, a-VG of uniform section, where the chords and the verticals may be composed of two different prismatic sections, and b-VG of uniform strength, where the con...

Response of Fire Exposed Steel Bridge Girders

Model Studies on Plate Girders

Tests on eighteen small scale models which simulate the elastic and post-buckling behaviour of plate girders when subjected to shear loading are reported and discussed. Themodels were fabricated of steel and Araldite; the major aim was to assess whether small scale models can be employed to study shear buckling problems. A secondary object was to examine whether araldite could be used for predi...

Excessive Long-Time Deflections of Prestressed Box Girders

The segmental prestressed concrete box girder of Koror-Babeldaob (KB) Bridge in Palau, which had the record span of 241 m (791 ft.), presents a striking paradigm of serviceability loss due to excessive multi-decade deflections. The data required for analysis have recently been released and are here exploited to show how the analysis and design could be improved. Erected segmentally in 1977, thi...

MS2a, Week 6, Model Solution

Consider the network from [1, Fig. 3b]: A B a. Assume the network grows as described in [1, Fig. 3b], by duplication of a gene (node) chosen uniformly at random. For the nodes marked A and B, respectively, compute the expected number of connections a random descendant has after a single duplication step, i.e. when the network has grown to seven nodes. The three possible topologies we can have a...