Citation

Ray M. Transp. Res. Rec. 1987; 1133: 30-41.

Copyright

(Copyright © 1987, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

A simplified method for the analysis and design of independent anchor blocks is presented. Independent anchor blocks are structures designed to provide adequate guardrail-system anchorage and still remain independent of the bridge rail structure in guardrail-bridge rail transitions. Critical loadings for independent anchor blocks are discussed as well as the dynamic ultimate strength of soils. Equations of motion are developed from dynamic equilibrium considerations, and design curves are developed that can assist the designer in selecting the most appropriate geometry. Given the length and width of a particular independent anchor block, the design curves indicate what minimum embedment depth is required to minimize deflections in the critical-loading cases. Finally, the results of two full-scale crash tests are presented that verify the design curves.

Record URL:
http://onlinepubs.trb.org/Onlinepubs/trr/1987/1133/1133-005.pdf

Language: en

Keywords

BRIDGES, HIGHWAY; DYNAMICS; HIGHWAY SYSTEMS - Guard Rails; SOIL MECHANICS; STRUCTURAL DESIGN - Anchorages