The required reliability to safety and serviceability of structural systems on the mine subsidence areas shall be achieved by appropriate choice of structural schema and types of joints. The paper presents the example of steel trestle bridge system 2500 m long designed on subsiding trough. The supports of space truss structure with pinned, nominally pinned and semi rigid - full strength joints, are designed to vertical settlement 1600 mm and horizontal displacements š 400 mm. Requirements for the quality, execution and maintenance inspections are also described.
Opisano estakadę transportową długości 2500 m, zaprojektowaną na terenie objętym eksploatacją górniczą. Podpory mostów o przestrzennej konstrukcji kratowej z węzłami przegubowymi, nominalnie przegubowymi i podatnymi o pełnej nośności, zaprojektowano na osiadania pionowe do 1600 mm i przemieszczenia poziome š400 mm. Opisano również wymagania jakości i sposób montażu konstrukcji.
EN
The paper presents the example of steel trestle bridge system 2500 m long designed on subsiding trough. The supports of space truss structure with pinned, nominally pinned and semi rigid - full strength joints, are designed to vertical settlement 1600 mm and horizontal displacements š400 mm. Requirements for the quality, execution and maintenance inspections are also described.