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A platform for research: civil engineering, architecture and urbanism
Experimental study on the mechanical behavior of shored mechanically stabilized earth walls for widening existing reinforced embankments
Abstract Shored mechanically stabilized earth (SMSE) walls have been increasingly applied in embankment widening projects because of their good mechanical performance, simple construction, low cost, and low site requirements. In this paper, several large-scale model tests were conducted to explore the mechanical behavior of the composite structures with different connection forms and relative densities, and the wall deformation, earth pressure, reinforcement strain, potential failure surface and the effects of the connection forms behind SMSE walls were also analyzed. The results show that the deformation of SMSE walls is mainly concentrated on the upper middle part, showing a “bulging” failure trend. The deformation of the SMSE walls can be effectively controlled by improving the relative density and adopting a “sandwich” connection behind the walls. The horizontal earth pressure against the SMSE wall facing shows a “K”-shaped distribution, and the vertical earth pressure is large in the upper part and small in the lower part. The potential failure surface originated at the junction of the old and new retaining walls, forming a “double-line” failure surface. For a “sandwich” connection, the failure surface moves forward and occurs where the primary and secondary reinforcements overlap, and this connection form is recommended in engineering practice.
Highlights Several large-scale model tests were carried out to explore the mechanical behavior of shored mechanically stabilized earth (SMSE) walls. Three typical connection forms with shoring walls were investigated in the tests, covering most possible situations in practice. The influence of SMSE walls on rear shoring walls was considered in the tests. The potential failure models of SMSE walls were revealed, and the “sandwich” connection was highly recommended.
Experimental study on the mechanical behavior of shored mechanically stabilized earth walls for widening existing reinforced embankments
Abstract Shored mechanically stabilized earth (SMSE) walls have been increasingly applied in embankment widening projects because of their good mechanical performance, simple construction, low cost, and low site requirements. In this paper, several large-scale model tests were conducted to explore the mechanical behavior of the composite structures with different connection forms and relative densities, and the wall deformation, earth pressure, reinforcement strain, potential failure surface and the effects of the connection forms behind SMSE walls were also analyzed. The results show that the deformation of SMSE walls is mainly concentrated on the upper middle part, showing a “bulging” failure trend. The deformation of the SMSE walls can be effectively controlled by improving the relative density and adopting a “sandwich” connection behind the walls. The horizontal earth pressure against the SMSE wall facing shows a “K”-shaped distribution, and the vertical earth pressure is large in the upper part and small in the lower part. The potential failure surface originated at the junction of the old and new retaining walls, forming a “double-line” failure surface. For a “sandwich” connection, the failure surface moves forward and occurs where the primary and secondary reinforcements overlap, and this connection form is recommended in engineering practice.
Highlights Several large-scale model tests were carried out to explore the mechanical behavior of shored mechanically stabilized earth (SMSE) walls. Three typical connection forms with shoring walls were investigated in the tests, covering most possible situations in practice. The influence of SMSE walls on rear shoring walls was considered in the tests. The potential failure models of SMSE walls were revealed, and the “sandwich” connection was highly recommended.
Experimental study on the mechanical behavior of shored mechanically stabilized earth walls for widening existing reinforced embankments
Ren, Fei-fan (author) / Xu, Huan (author) / Ji, Yan-jun (author) / Huang, Qiang-qiang (author) / Tian, Xun (author)
Geotextiles and Geomembranes ; 50 ; 737-750
2022-03-21
14 pages
Article (Journal)
Electronic Resource
English
Finite Element Modeling of a Field-Scale Shored Mechanically Stabilized Earth Wall
| British Library Conference Proceedings | 2010