COMBINED TUNNEL TYPE FLOODGATES FOR ROAD FACILITIES

Abstract

The paper consist developed the method of arranging combined structures used as foundations for fragments of regional and local roads over small streams and spillways, which combine the functions of standard monolithic slab-type bridge structures and floodgate box structures. The proposed method is a more reliable alternative to modern standard solutions in the form of prefabricated concrete spillways or non-pressure pipes of a round cross section, which are installed over natural and artificial barriers of short length. In addition, the proposed constructive solution can have a dual use – as a floodgate in normal mode and a temporary shelter (reinforced concrete dugout) for the civilian population at the time of the air raid. Have been detailed described the proposed design solution, have been developed a finite element model of the stress-strain state of a structure, taking into account soil conditions under the action of a complex of loads, including temporary effects from wheeled vehicles. Have been localized the sections of the structures where the largest tension. Have been proposed a rational variant of their reinforcement. Have been confirmed the reliability and effectiveness of the proposed design solutions in the process of analyzing the results of finite element modeling. Have been generalized practical experience in the design and construction of a combined tunnel-type structure in the Dzhugastra village, Kryzhopilskyj district, Vinnytsia region. Have been described the technological sequence of performing construction and installation works on the installation of a structure according to the methodology proposed by the authors of the article.