01152263

Component

Corrugated steel structures deform during backfilling process. This phenomneon is beneficial if is controlled properly. Deformation is a result of earth pressure and results in generating of internal forces in the steel shell. A very similar effect occurs when cable-tensioning concrete girders. Thus the behavior of corrugated steel structure was considered in the view of tensioning it in the backiffiling process. By measuring changes of curvature one can determine tensioning force and internal forces in the steel. Relations between peaking and lateral shortening can be observed on various graphs . Number of equations proposed in the paper allow for calculation of characteristic changes of geometry of the corrugated steel structure during tensioning it by means of compacted soil. Controlled process of backiffiling together with sound methodology of evaluating the magnitude of internal forces based on deformations of the corruagted steel can lead to increase of safety and optimal design of flexible culverts.

01147878

10-0903

English

22p

2010

Transportation Research Board 89th Annual Meeting

DVD

Figures; Photos; References (8) ; Tables (1)

Backfilling; Cable stayed bridges; Compacted soils; Construction; Corrugated steel; Girder bridges; Internal forces; Steel structures; Tensioning

Bridges and other structures; Construction; Highways; I53: Construction of Bridges and Retaining Walls

Transportation Research Board Annual Meeting 2010 Paper #10-0903

TRIS, TRB

Jan 25 2010 10:25AM