Introduction. Timber as a structural material for bridge spans has some advantages compared to currently widespread reinforced concrete or steel. New technological and forms of timber should comply with modern requirements load capacity durability. Compared foreign practice construction, our experience in this sphere is largely lost does not correspond conditions. The most advanced design solutions include combined timber-reinforced spans. Materials methods. authors analyze both domestic...

The article is devoted to the implementation in practice of construction new bridge boardwalk timber - nail span structures that meet modern requirements load capacity, reliability and durability. authors propose describe a design timber-beam-peg–nailed blocks with longitudinal-transverse orientation belt boards carrying transverse reinforced concrete slab carriageway. represented materials show effectiveness proposed solutions.

Introduction. Experience in the design and construction of beam structures wooden bridges with composite girders indicates possibility increasing bearing capacity length overlapped spans. Materials methods. The most rational load-bearing elements can serve as logs edged on two edges diameter 28 to 32 cm maximum use durable layers sapwood dowel connections steel plates blind cylindrical nags. Results. In contrast compounds lamellar nails, proposed connection greatly simplifies process making...

Introduction . The paper presents the prefabricated whole-glued slab-ribbed superstructures, containing glued beams (fins) and a multi-layered wood-panel from horizontal cross-layers of blank boards, laid successively on each other interconnected by glue seams. Materials methods Because development constructive technological forms considered authors propose structure composed plate ribbed integrally transported sections with width 3-3.5 m. highlight that combined action detached is provided...

Introduction. Studying the designing and constructing experience of beam bridges with composite log girders indicates possibility load bearing capacity rising structures their further usage in IV V categories bridges’ construction under A-11 H-11 loads. The purpose research is to evaluate effect on magnitude distribution shear forces bonds, considering permissible pliability fixation wood nature stress state change rods girders. Materials methods. authors presented girder form three rows...