Dimensionamento de estruturas de contenção em solo reforçado com geossintético e face elaborada com blocos segmentais de concreto

Abstract

The retaining structures are present in most of the works and engineering projects such as roads, bridges and dams. In recent years, traditional solutions have been perfected while new techniques have been developed. For example the soil improvement geosynthetic material is a recent solution and have been widely used in civil works. The technique presents distinct advantages as the construction dried and the possibility of using the soil itself of the location of the work roll. This paper discusses the design of retaining walls with soil reinforced by polymeric materials and vestment consisting of interlocking concrete blocks. They are presented and discussed the characteristic design results of two hypothetical walls with 7 meters high and 14 meters long, composed of a drainage system and application layers of PVA geogrids. The differential structures is given by the type of foundation and backfill soil. One of the structures is composed of cohesive soil containing contents, classified as sandy clay and the other consists of purely sandy soil. After performing the calculations, it was observed that the sandy soil promotes easier the transfer of massive tensions for geogrids. But the sandy loamy soil , presents difficulties to dispel charges. It can be said that this fact is a consequence of the presence of cohesion. It was found that the type of soil used in the execution is a key factor to understand the behavior of the distribution of tensions in incidents reinforcing elements inserted into the mass.