Method of strengthening the ribbed span structure by turning it into a box structure used for reconstruction of bridge structures
https://doi.org/10.52170/1815-9265-2023-66-93
Abstract
The most important task of the Russian road industry is the qualitative improvement of the condition of highways and artificial structures on them. According to official data, about 30 % of bridge structures located on highways of regional and inter-municipal significance are in unsatisfactory, pre-emergency and emergency condition.
The aim of the author was to develop a new structural and technological solution for strengthening the span structure of bridge structures to significantly increase their carrying capacity, carrying capacity while maintaining traffic on and under the structure for the period of reconstruction. The article describes the author's research on the problem under consideration, including an analysis of the applied reinforcement methods, including a generalization of existing technical solutions, describes full-scale tests of the proposed method on a specially manufactured test bench. The advantages and specific examples of successful application of the method in the repair and reconstruction of facilities are given.
The method is based on a new approach to reshaping reinforcement elements – not in each separate beam, but by combining two or three adjacent beams into a new monolithic box. Moreover, such a design can be used to strengthen a separate split span, or it can also be used for reconstruction into an uncut span structure when replacing a set of supporting parts.
It turns out a completely new superstructure design, which is a box-shaped monolithic continuous solid beam, where the former beams of the split beam system serve at the first stage only as a fixed formwork, and at the subsequent stage, having joined in joint work as a "frame element" in the center of which there is a monolithic stressed structure.
About the Author
W. Yu. Kazaryan
NPP SK MOST
Russian Federation
Russian Federation
Wilhelm Yu. Kazaryan – General Director of NPP SK MOST, Doctor of Transport of the Russian Academy of Transport, Full Member of the Engineering Academy of Armenia, Member of the All-Russian Society of Inventors
and Innovators, Member of the International Association IABSE
Balashikha, Moscow region, Russia
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Review
For citations:
Kazaryan W.Yu. Method of strengthening the ribbed span structure by turning it into a box structure used for reconstruction of bridge structures. Bulletin of Siberian State University of Transport. 2023;(3):93-104. (In Russ.) https://doi.org/10.52170/1815-9265-2023-66-93
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