Model Testing of Reinforced Soil Slope with Flexible Facing
Pravesh Kumar Sharma1, Amanpreet Tangri2, Shalika Mehta3

1Pravesh Kumar Sharma, Department of Civil Engineering, Chandigarh University, Gharuan Mohali (Punjab), India.
2Amanpreet Tangri, Department of Civil Engineering, Chandigarh University, Gharuan Mohali (Punjab), India.
3Shalika Mehta, Department of Civil Engineering, Chandigarh University, Gharuan Mohal (Punjab), India.

Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 2221-2226 | Volume-8 Issue-7, May 2019 | Retrieval Number: G5757058719/19©BEIESP
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Abstract: Soil nailing is a cost-effective way to reinforce soil, including inserting a threaded rod into a naturally unstable slope to increase overall stability or to enter the cutting ramp during top-down excavation. Retained soil, resistant reinforcements and exterior facing are the main elements of the soil nail formation. Their composite interaction is used to measure the efficiency of the soil nail structure in terms of deformation and strength. Even though international regulations deal with the possibility of using rigid or flexible exterior facing, the effects of stiffness are not adequately studied and estimated. Therefore, the aim of this paper is to test the strength of different materials such as HDPE hexagonal slope protection geonet, strata base biaxial polypropylene geonet, HDPE drainage geonet, expanded metal mesh utilized for flexible facing. The experiments are carried out with four nails positioned in horizontal as well as in vertical position in the soil model prepared in Chandigarh University Campus. From the experiment, it is observed that the expanded metal mesh material performs well among other material with maximum stress of 80 Kg/cm2 . Also, a comparison of maximum stress between flexible facing (with & without facing) and flexible facing with rigid facing is performed. It is being analyzed that the rigid facing has tolerated maximum stress about 98 Kg/cm2 compared to soil slope with flexible facing and soil slope without facing.
Keyword: Soil Nailing, Physical Model, Pressure Dial Gauge, Steel Bar, Flex Sensor, Digital Multi-Meter, Electric Switch, Pressure Hydraulic Jack (Bottle Jack).
Scope of the Article: Soil-Structure Interaction.