📋 Tender Overview
The Ministry of Construction of Russia has updated the regulatory documents governing the design and construction of transport facilities SP 35 Bridges and Pipes and SP 122 Railway and Highway Tunnels. The documents came into effect on July 1 2021.Over the past years bridge building has received significant technological development namely the acceleration of the pace of installation of structures the use of new modern materials. When updating SP 35 the main attention was paid to the problems of vehicle traffic safety on bridges drainage system barrier fences expansion joints. The work on updating the normative documents was carried out with the active participation of the Ministry of Transport of Russia Rosavtodor TC 418 Road Facilities.The document includes requirements for modern methods of calculating bridge structures based on a nonlinear approach to material accounting. New technologies for concrete work can significantly reduce the spread of concrete properties in structures. In this regard on the basis of experimental studies in the new edition of the set of rules the use of nonlinear calculation methods for reinforced concrete bridges was allowed.Also the updated document provides the possibility of using new materials that have been tested not only in the laboratory but also in real structures during the pilot design and construction of bridges. These are new classes of reinforcement steel high-strength concrete of classes above B60 composite materials. The revision of the set of rules was preceded by several applied scientific research as well as the accumulation of the results of experimental design and construction of a number of facilities.According to experts the use of new materials and structures permitted in the code of practice will reduce material consumption and increase the construction speed of small and medium bridges.As part of the comprehensive work the specialists also made changes to JV 122 Railway and road tunnels. One of the most important results of the change in SP 122 is an increase in the level of safety during the construction and operation of transport tunnels and the safety of the surrounding buildings by increasing the reliability and accuracy of geotechnical calculations which determine the reliability and efficiency of the projected tunnel facility. The choice of effective protection of structures from ground and corrosive waters increases the durability of structures of underground transport facilities increases the turnaround time and ensures the operational safety of the tunnels.The document introduces provisions for the practical application of modern methods of construction of pits which ensures the reliability and stability of the enclosing structures prevents settlements of buildings and structures of the surrounding development.The changes made simplify and speed up the design processes and also in many cases make it possible to abandon the development of special technical conditions. The changes made are also aimed at harmonizing regulatory requirements with European and international standards.The work on updating the standards was organized by the FAI FCS and carried out by JSC TsNIIS and LLC Masterskaya Mostov with the participation of specialists from LLC ITC MIT JSC Roads and Bridges and Mostotrest.
