engleski

Observation and numerical modeling of test MSEW with inextensible inclusions and course crushed stone backfill

This paper presents behavioral observation and numerical modeling of test Mechanically Stabilized Earth Wall (MSEW) under applied overburden load. Namely, the 6m wide and 3.2m high wall, with 10cm thick precast concrete panel face elements and embedded reinforcement length of 2.15m was built on stiff foundation soil. Welded wire mash Q335 was used as reinforcement. Stage-wise, the top of the wall was loaded with additional overburden weight in order to investigate the pre-failure wall behavior. The horizontal displacements were measured with an inclinometer installed in the middle of the wall length and geodetic survey of the wall face. Observed results were compared to the analysis results obtained from numerical model created using the geotechnical software Plaxis. Numerical model consisting of inextensible inclusions, which are embedded in crushed stone granular backfill, was introduced in order to simulate the transverse rib resistance during wall construction and after placement of surcharge load. Proposed numerical model for the behavior of MSEW with inextensible inclusions is in good agreement with measured values obtained on the test wall. The details of proposed model along with validation of results on numerical simulation of pull out test conducted on same materials are presented here.

MSEW; numerical modeling; inextensible inclusions; pullout test;

nije evidentirano