Proposta de uma ponte ao Governo de Niassa na passagem de nível na estrada N243 Lichinga – Chimbunila: dimensionamento de uma ponte mista treliçada

Abstract

One of man's great challenges is to guarantee access to the circulation, reaching different destinations regardless of the obstacles to be overcome, such as river, seas and deepest valleys. However, the structures to overcome these challenges must be very well designed ensuring the safety not only of those who use these works but also those who may live close to them. At road bridge works have been present in the world since ancient times, since ancient times, in the conquest of new territories and in the present day seeking to reduce access distances between provinces, countries and even continents. The increase in the number of cars in almost all Districts and the increase in considerable speed at which vehicles travel brings with it challenges in terms of structures that were not thought of in the design of highways and conventional. The dynamic effects resulting from the passage of vehicles to high speeds at level crossings can be of particular importance, since they favor the occurrence of many accidents and especially in the passages of levels without signs or bridges, especially at level crossings without guards. The present work consists of the structural design project of a bridge at the level crossing between the railway and the highway that connects the city of Lichinga and the District of Chimbunila in the town of Colongo. The unevenness between the highway and the railroad is of great importance, and these two ways create a system of development between the districts located in the northern part of Niassa province, however, the transport of goods and the safe movement of all actors on both roads and residents of the Colongo village (TRADUÇÃO NOSSA).