Technology of underwater laying of concrete mortar in the construction of bridge structure foundations

Abstract

The article discusses bridges, which are engineering structures designed to lay transport highways over natural
and artificial water obstacles, and the technologies for their underwater construction. In particular, the
technology of laying concrete mix using the VPT (vertical movable pipe) method, which is one of the important
stages in the underwater construction of bridge foundations, is analyzed. The VPT method allows maintaining
the quality of concrete in an underwater environment, ensuring its hydraulic properties and strength. This method
is widely used in areas where groundwater flows under high pressure, drilled wells, pile foundations, and other
structures. To prevent the separation and washing away of the concrete mixture, the stability of the water
retention systems and the concrete at the end of the pipe is strictly controlled. The article also extensively covers
the complexity of underwater and surface works, their technological and engineering features