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| Aktivitäten | |
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Mechanically stabilized earth walls (MSEW) (Anwendungen von Geokunststoffen (Geogitter) in bewehrten Stützwänden) MSc. Dipl.-Ing. Alejandro Palma For many years, retaining structures were almost exclusively made of reinforced concrete and were designed as gravity or cantilever walls which are essentially rigid structures and cannot accommodate significant differential settlements unless founded on deep foundations. With increasing height of soil to be retained and poor subsoil conditions, the cost of reinforced concrete retaining walls increases rapidly. Mechanically Stabilized Earth Walls (MSEW) are cost effective soil-retaining structures that can tolerate much larger settlements than reinforced concrete walls. By placing tensile reinforcing elements (inclusions) in the soil, the strength of the soil can be improved significantly such that the vertical face of the soil/reinforcement system is essentially self supporting. Use of a facing system to prevent soil raveling between the reinforcing elements allows vertical walls to be constructed safely. Geogrids for soil reinforcement were developed around 1980 and to date are the most used geosynthetic reinforcements in Segmental Retaining Walls (SRW) structures. The rapid acceptance of soil reinforcement SRWs can be attributed to a number of factors, including low cost, aesthetics, reliability, simple constructions techniques and the ability of the reinforced soil structures to adapt to different site conditions. The purpose of this presentation is to provide an overview of MSEW development, design methodologies, main field of applications and to illustrate the versatility of SRWs, a variety of project photographs will be shown. |
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