The article discusses the use of reinforced polymer fibers in architectural and structural design of bridges on the example of structures in the Netherlands. The chemical structure of this material is presented - a polymer matrix reinforced with natural or artificial fibers. A brief historical background of the use of composite materials is given, a comparative analysis of structures made of new construction material and the traditional one is carried out. The problems and possibilities of this relatively new material are discussed. The variants of constructive solutions for the bridge construction of a new generation are proposed. The basic methods for the production of bridge components that meet aesthetic and economic requirements are described: the use of modular elements of the edges of the flooring, the construction of smart formwork and monocoque structures. The physicochemical properties of polymeric materials have been studied in detail, of which it is currently possible to manufacture reinforcement for bridges. In conclusion, the analysis of the effectiveness of the use of this material in architecture and construction over the past decades has been carried out and suggestions have been made about the future vector of the study and application of polymers.

Keywords: biocomposites, bio-resins, composite materials, lamination, monocoque structures, bridge deck, bridge construction, pultrusion profile

This article discusses the basic principles of the use of structural membranes in the reconstruction of buildings and structures. Three principles of intervention in the existing architecture are described in detail. The first is to preserve the historical appearance and character of the building. The second is the scale of the new and old parts of the building. The third is the difference and the possibility of reorganizing new designs. The characteristics of the goals, the achievement of which each of these principles is directed, are given. Using the example of several buildings, we analyzed the use of textile membranes to achieve the main goals of reconstruction, described the positive and negative aspects of restoration using textile membranes. These buildings include: a church on a hill in Corbera d'Ebr, Spain (roof restoration), the central courtyard of the Palacio de Mineria, Mexico (creating coverage over a yard area), Salzburg residence, Austria (sliding roof). In conclusion, conclusions were made about the advantages of using membranes for the preservation of historical heritage and possible prospects for the development of fields of application of this design.

Keywords: architecture, membranes, reconstruction, restoration, structural structures