EFFECT OF BACKFILL SOIL TYPE ON STIFFNESS AND CAPACITY OF BRIDGE ABUTMENTS
Bridge abutments are earth-retaining structures which support the superstructure at the ends of a bridge and provide resistance to deformation and earthquake induced inertial forces from the bridge deck. Current design practice in California makes use of bi-linear load-deformation curve and does not account for the structure backfill properties. An experimental and an analytical research program were conducted at UCSD to further investigate such structure backfill interaction characteristics. The experimental program included five large-scale tests to examine the effect of structure backfill soil type, backfill height, vertical movement of the wall, and pre-existing cut slope in backfilling on stiffness and capacity of the abutments in the longitudinal direction. The study indicated that the response of bridge abutments in the longitudinal direction is nonlinear and a function of several influential factors which need to be considered. The results of the experimental program are presented in this paper.
Bridge abutments experimental testing passive pressure stiffness and ultimate capacity.
A. Bozorgzadeh S. A. Ashford J. I. Restrepo
Moffatt and Nichol Inc, Walnut creek, CA, USA Head of School of Civil and Construction Engineering, Oregon State University, Oregon, USA Dept. of Structural Engineering, University of California, San Diego, USA
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）