Dimensionamento de muro de contenção em alvenaria estrutural protendida

Abstract

The retaining walls are structural elements with the function of avoiding landslides and landslides of an inclined or unstable slope and promoting the safety of public and private persons and assets. With the advent of techniques for prestressing using active armour, the option to examine the use of these fixtures in conjunction with the structural masonry, spraying the mutualism between structural both elements, as the building blocks of concrete are good resistant to efforts of compression and the cables of stressing are excellent fighters for the efforts of traction. The two represent advantageous and complement each other efficiently, because the concrete blocks are pieces of easy execution and do not require the use of molds, but are poor in resistance to traction, when the cables of stressing enters on the scene, the strength of prestressing can undo the efforts of traction and make the structural element, formed by all structural masonry prestressed, resistant to the actions which generate bending in the structure. The use of prestressing, in spite of having a price a little higher in relation to the passive armour, has an economy based on the rate of steel and requires less time and labor to be performed. Faced with these facts, it becomes essential to present a roadmap of sizing a containment wall in structural masonry prestressed and contribute to enriching the brazilian literature with this typology structure that deserves attention to be studied and applied as a viable solution