Effect of soil friction on performance of hybrid mechanically stabilized earth walls with large spacing
|
Full Text |
Pdf
|
|
Author |
Abdullah F. Alluhaybi
|
|
e-ISSN |
1819-6608 |
|
On Pages
|
271-279
|
|
Volume No. |
18
|
|
Issue No. |
04
|
|
Issue Date |
March 31, 2023
|
|
DOI |
https://doi.org/10.59018/022347
|
|
Keywords |
MSE walls, reinforced soil, geogrid, numerical model, horizontal displacement, tensile force, friction angle.
|
Abstract
Recently, Mechanically Stabilized Earth Walls (MSEW) showed improved performance and acceptance among engineers and contractors, particularly when used to widen roads to handle large traffic or as bridge ramps. MSEW has a number of advantages over conventional concrete reinforcement walls, including; greater heights can be achieved at reasonable cost. The need for higher walls of retaining requires a desire for new techniques. The use of large geogrid spacing is one of these techniques. In this case, there are a number of solutions, including the use of wire mesh to avoid local failure on the wall due to the large spacing. In this scientific paper a study of the behavior of the MSEW was carried out through three forms which are: horizontal displacement, tensile forces in the wire mesh, and shear strain. The elastic model of geogrid which used to reinforcement the soil will be changed. To know the effect of this on the behavior of the MSEW through the three cases that I mentioned previously. There are three cases of Elastic Models used in this study 0.26E2, 0.26E6, 0.26E10. In addition to the experience of changing the friction angle of the reinforced fill, using three angles 42.9°, 33°, 24°. The results showed a reasonable and convincing performance of the study that was used for MSEW behavior at the angle 42.9°. Where made it clear that the MSEW does not need reinforced the soil by geogrid and can be dispensed with completely. On the contrary, the angle of friction was 24° and 33°, where the geogrid had a clear effect on its effect on MSEW behavior. The higher the Elastic model for Geogrid, the better the results for the three cases studied.
Back