Evaluation of wooden elements operabilit spans of short length road bridges

Abstract

Wood has long been used as a building material, including during the construction of transport structures. Accessibility, ease of processing, and in certain historical periods and lack of alternatives led to the mass construction of wooden bridge structures. Due to the peculiarities of such natural material, against the background of the development of the construction industry and the increasing requirements for transport infrastructure, wood is being displaced from transport construction as a material, but at present there are a fairly noticeable number of road bridges with wooden load-bearing elements designed and built in previous periods. In addition, the current norms allow the use of wood in bridge construction, which in some cases is advisable and finds its implementation. Thus, in the process of maintaining existing and newly built bridges with wooden structural elements, the issue of assessing their consumer properties, in particular lifting capacity, is relevant, which is necessary in the purpose of operating modes, making decisions on inter-repair periods and the purpose of the level of repair impact. The purpose of this study is to assess the operability of the wooden load-carrying elements of the span structures of the bridges in operation based on the actual data on the state of wood, obtained visually during the inspection of objects.