Settlement occurred continuously and additional layers were added to nullify the Overlaid as a maintenance measure to avoid riding discomforts to travelers. Initially when the embankment started settling, the road surface was
One of the primary causes of the settlement wasĪttributed to the weight of 12 m (40 ft) high embankment material which undergoesĬompaction induced consolidation and also induces settlement in the underlyingįoundation soils. (16 in) of settlement since its construction due to usage of compressible material asīackfill and improper compaction. The current embankment section is located at the intersection of highways US 67Īnd SH 174 in Johnson County, Texas. (2009), attempts were made to mitigate such settlement in embankment soils by usingĭriven piles, drilled shafts, stone columns, controlled low strength materials (CLSM) In the studies conducted by Briaud et al. Governed by the type of embankment fill and the efficiency of compaction performed. Settlements in embankments, higher than 9 m (30 ft), are predominantly Of settlements in embankments occur within the first 6 m (20 ft) from the edge of theīridge. Large settlements in embankments are attributed due to improperĬompaction of backfill, clayey soil presence, and poor drainage conditions (HelwanyĮt al. Settlements and are subjected to maintenance costs over millions of dollars annually In the United States, 25% of the bridges experienced embankment related Keywords: Numerical modeling, FLAC3D, hyperbolic model, EPS geofoam, Hyperbolic model are higher when compared to the same predicted by numerical Prediction results indicate that the settlements predicted by the Both these models are used to predict the approximate long term Understand the settlement patterns occurring in the field and also to identify the longterm performance of this section, numerical and analytical hyperbolic modeling wereĪttempted. Settlements occurring in the field have been monitored periodically. Inclinometers at different locations for monitoring the settlements after rehabilitation. This site was extensively instrumented with horizontal Reduce the weight, part of the embankment fill was replaced with a light weight EPS One of the primaryĬauses of the settlement was attributed to embankment and its self weight.
Mitigating the settlement and they were proven to be ineffective. Several treatment methods were attempted in The embankment under current focus wasĬonstructed more than a decade ago and has experienced nearly 405 mm (16 in.) of Raju Acharya1, Tejo Vikash Bheemasetti2, Pinit Ruttanaporamakul3, Bhaskarĭoctoral Student, 2Doctoral Student, 3Doctoral Student, 4Faculty Associate-Research, 5Professor,ĭepartment of Civil Engineering, The University of Texas at Arlington, Arlington, Texas 76019Ĭorresponding author: Geofoam material has been used as a partial replacement forĬonventional fill material in a highway embankment in Texas, USA to mitigateīridge approach slab settlements. Numerical Modeling of a Highway Embankment Using Geofoam Material as Geo-Congress 2014 Technical Papers, GSP 234 © ASCE 2014 For personal use only all rights reserved. Downloaded from by University of California, San Diego on 01/14/15.