The Research about the Stability of Reinforced Soil Retaining Wall in Operating Period

Existing design methods of a reinforced-soil retaining wall were established for walls with cohesionless soil backfill. However, local soil has been used widely in the construction of such a wall for economic reasons. Laboratory and numerical studies have pointed out the merit of using cohesive backfill in association with geosynthetic reinforcement. Since the compacted soil was in an unsaturated condition during the construction of the reinforced wall, the apparent cohesion derived from both soil mineralogy and suction could contribute to the stability of the wall. This paper considers methods to include the suction contribution to the existing design guidelines based on slope stability analysis, i.e. simplified method and simplified stiffness method. The analyses were carried out on a case study of geosynthetics reinforced soil retaining wall. Results show that the contribution of suction as part of cohesion existing in the cohesive backfill could be considered for the stability analysis of reinforced soil retaining walls using the available design guidelines.

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Monitoring Technique Using a Vision-based Single-Camera System for Reinforced Soil Retaining Wall

Korean Society of Hazard Mitigation ◽

10.9798/kosham.2020.20.6.209 ◽

2020 ◽

Vol 20 (6) ◽

pp. 209-219

Author(s):

Yongsoo Ha ◽

Gichul Kweon ◽

Yuntae Kim

Keyword(s):

Feature Matching ◽

Retaining Wall ◽

Reinforced Soil ◽

Structural Safety ◽

Wall Structure ◽

Single Camera ◽

Optimal Method ◽

Camera System ◽

Perspective Image ◽

The Stability

Reinforced soil retaining walls are widely applied, and their frequency of collapse increases along with their use. Safety inspections are regularly conducted to ensure the structural safety of such walls. However, unexpected collapses occur for different reasons, such as design and construction problems, maintenance issues, and natural disasters including intensive rainfall. In this study, a single-camera system is proposed to evaluate the behavior of a retaining wall based on a single-perspective image. Various feature matching methods were compared to determine the optimal method for monitoring the retaining wall structure. The behaviors of the retaining wall structure were analyzed using the optimal method. The results indicate that the KAZE method provides the best results for monitoring the behaviors of a retaining wall, with errors ranging from 0.03% to 7.37%. The proposed single-camera system is widely used to evaluate the stability of a structure with high accuracy.

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Dynamic Response of Reinforced Soil Retaining Wall Resting on Soft Clay

Transportation Infrastructure Geotechnology ◽

10.1007/s40515-021-00156-9 ◽

2021 ◽

Author(s):

Ripon Hore ◽

Sudipta Chakraborty ◽

Ayaz Mahmud Shuvon ◽

Md. Fayjul Bari ◽

Mehedi A. Ansary

Keyword(s):

Dynamic Response ◽

Retaining Wall ◽

Soft Clay ◽

Reinforced Soil

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PSEUDOSTATIC DESIGN FACTORS FOR STABILITY OF WATERFRONT-RETAINING WALL DURING EARTHQUAKE

Journal of Earthquake and Tsunami ◽

10.1142/s1793431110000819 ◽

2010 ◽

Vol 04 (04) ◽

pp. 387-400 ◽

Cited By ~ 2

Author(s):

DEEPANKAR CHOUDHURY ◽

SYED MOHD AHMAD

Keyword(s):

Retaining Wall ◽

Pressure Ratio ◽

Free Water ◽

Hydrodynamic Pressure ◽

Wall Friction ◽

Sliding Stability ◽

The Stability ◽

Seismic Forces ◽

Design Factors ◽

Similar Kind

The paper presents a methodology for seismic design of rigid watferfront-retaining wall and proposes simple design factors for the sliding stability under seismic condition. Conventional pseudostatic approach has been used for the calculation of the seismic forces, while for the calculation of the hydrodynamic pressure, Westergaard's approach has been used. In addition, the hydrodynamic force has been considered from both the upstream and downstream sides of the waterfront-retaining wall under free water condition of the backfill. Simplified expression for the calculation of the equivalent weight of the wall which would be needed to maintain sliding stability is presented. It has been observed that the presence of water both on the upstream and downstream sides of the wall has serious destabilizing effect on the stability of the wall. It is noticed that as the height of the water inside the backfill increased from 0.00 to a height equal to the height of the wall itself, i.e., the backfill is fully submerged, the weight of the wall needed for the later case is around 3 times more than what would be needed for the former case. Similar observations were also made by varying other parameters like the horizontal and vertical seismic acceleration coefficients, height of the water on the upstream side of the wall, and soil and wall friction angles. The pore pressure ratio and the inclination of the ground, however, did not have significant effect on the results. Due to nonavailability of the results of similar kind in literature, an exact comparison for the present results could not be made. Only partial comparison of the present results is made with an already existing methodology for the dry backfill case only, in which no presence of water has been considered on the other side of the wall. This comparison shows a good agreement with the present results. The proposed pseudostatic design factors for the case of wet backfill with the presence of water on both sides of the wall are claimed to be unique.

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