Accession Number : ADA152325


Title :   Seismic Design of Gravity Retaining Walls


Descriptive Note : Final rept. Apr-Dec 1983


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CIVIL ENGINEERING


Personal Author(s) : Whitman, Robert V. ; Liao, Samson


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA152325


Report Date : JAN 1985


Pagination or Media Count : 160


Abstract : The design of gravity retaining walls in an earthquake-prone environment is usually based upon static analysis using an equivalent seismic coefficient. This can be a suitable approach, provided that the seismic coefficient is determined from a rational analysis of actual dynamic behavior. The report discusses the seismic design of gravity walls retaining granular backfill without pore water. The general features of behavior are illustrated by field experiences, results from laboratory model tests and from theoretical analyses. Both the conventional method of design and the Richards-Elms method, based upon an analogy to a sliding block, are reviewed. A shortcoming of the sliding block analogy is discussed, and corrections obtained using a two-block model are presented. Several sources of uncertainty are examined in detail: the random nature of ground motions, uncertainty in resistance parameters, and model errors, including the important influence of deformability in the backfill. All of these results are then combined to develop a probabilistic method for predicting seismically induced displacements of walls and an improved version of the Richards-Elms method of design. The risk that walls designed by the conventional method might experience excessive displacements is analyzed. Originator supplied keywords include: Retaining walls--design and construction (LC); Richards-Elms retaining wall design method (WES).


Descriptors :   *STRUCTURAL MECHANICS , *WALLS , DISPLACEMENT , GRAVITY , SLIDING , ANALOGIES


Subject Categories : STRUCTURAL ENGINEERING AND BUILDING TECHNOLOGY


Distribution Statement : APPROVED FOR PUBLIC RELEASE