Strengthening bridge spans by composite materials

The modern effective method of reinforced concrete bridge superstructures reinforcement using composite materials is considered. The results of comparative analysis of physical and mechanical properties of materials used to strengthen the bridge spans that have received defects and damage during their operation are presented. The results of the performed analysis of experimental studies of building structures reinforced by similar methods are shown. Various options of fixing carbon lamellas on the surfaces of reinforced structures are investigated. An alternative method of fixing the carbon lamella using the anchor device, devoid of shortcomings of existing technical solutions, is proposed. The principle of operation of the proposed anchor device operating on the principle of tightening bar is described in detail. The article describes technological operations in strengthening the reinforced concrete beam of automobile and road bridge. Construction solutions of the organization of nodal connections are shown. (paper)