Recommendations for restoration of culvert using metal corrugated structures

Introduction. The reliability and durability of culverts are affected by static and dynamic loads from vehicles and temperature and climatic influences, the destructive force of water flow, abrasive destruction, corrosion of the material, shortcomings in the choice of structures and unsatisfactory design, all of which cause the premature collapse of the structure. Today, culverts made of metal corrugated structures (hereinafter referred to as metal corrugated structures) are widely used. The well-known advantages that justify the choice of such a solution are mainly a short term and a relatively low cost of construction, construction provided that the appropriate technological regime is observed does not cause any particular problems. Therefore, there is a need to develop a recommendation for the restoration of culverts using metal corrugated structures.

Problems. It was established that there is a need to restore culverts without stopping the movement of vehicles.

Goal. It consists in offering approaches for the restoration of culverts using metal corrugated structures.

Results. Recommendations for the restoration of culverts using metal corrugated structures are offered, with recommendations for the selection of materials and the organization and technology of culvert restoration works.

Conclusions. Today, a large number of culverts are in an unsatisfactory condition, having not served their predicted service life. Having damage and abrasion caused by corrosion, which affects the transfer of soil and the washing out of cavities and settling of the culvert over time. Soil erosion will cause the culvert to lose stability, which will cause the road to collapse.

The application of the “casing” method facilitates trenchless culvert repair to the maximum advantage of leaving the pipe serviceable during the repair, returning the pipe to original condition or better. Trenchless repair is appropriate when a culvert loses its structural integrity but has not completely failed or collapsed. A standard method for evaluating the cost/benefit of this repair method is to perform a life-cycle cost analysis to determine how the upfront costs pay off over time.

Once a culvert is identified as needing attention, a decision must be made as to whether that particular structure should be completely replaced or a repair and rehabilitation program should be undertaken. Factors influencing this decision include the extent of damage the culvert has sustained; site conditions; impact of vehicle traffic; the relative costs of either approach; availability of financing; safety issues applicable to each type of structure; and an estimate of the remaining service life of the existing culvert, whether repaired or not.

We are working on the proposal of approaches to the restoration of culverts using metal corrugated structures.

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