Civil Engineering Reference
In-Depth Information
Chapter 8
Analysis of Single Story RFERS Subject to
Temperature Variations
Abstract.
This chapter presents the results of numerical parametric analysis of
single-story structures with varying geometries and properties. The primary
purpose of this analysis is to investigate the effect of thermal movements of
Rigidly Framed Earth Retaining Structures (RFERS) on (1) the displacement of
the rigid frames, (2) the stresses developed in the structural elements, and (3) the
lateral earth pressure developed in the soil mass. The results are reported for 1,
10, 20 bay frames in this Chapter and for 3, 6, 15 bay frames in Appendix A for
φ
= 30°. Results for
φ
= 40° are also presented in Appendix A.
8.1 Introduction
The soil-structure interaction governing the behavior of a full scale in-service
rigidly framed earth retaining structures (RFERS) subject to large temperature
variations was analyzed and discussed in earlier chapters and found to have
substantial effects on the stresses and strains developed in the retained soil mass
and the structural elements of the RFERS.
The soil-structure interaction problem involving thermal movements of the
RFERS is further examined herein through a numerical parametric analysis of
structures with varying geometries and properties. The primary purpose of this
analysis is to investigate the effects of thermal movements of the RFERS on the
displacement of the rigid frames, the stresses developed in the structural elements,
and the lateral earth pressure developed in the soil mass.
Additionally, the results of the numerical parametric analysis presented in
Chapter 7 for the earth pressure at backfill stage, combined with the parametric
analysis presented in this chapter will be used to draft general guidelines and
recommendation for the analysis and design of single story rigidly framed earth
retaining structures subjected to large temperature variations.
8.2 Numerical Parametric Analysis
Two-dimensional plane strain finite element analysis of single-story rigidly
framed earth retaining structures of varying number of bays, bay lengths, and
