Abstract
The paper focuses on technical analysis of spatial attice structures used in roofing of mechanical equipment rooms of hydroelectric power stations in Russia. The analysis reveals that spatial structures of “Markhi” type are used most frequently there and shows their advantages and disadvantages. The authors put forward their own solution for combining advantages of spatial spatial lattice roofing structures with those of truss frames with gusset plate units. The solution is aimed at enhancing the safety and reliability of hydraulic engineering constructions with no changes in accuracy requirements to their manufacturing. The authors also introduce their model of a spatial lattice roofing unit and give an account of its reliability and strength based on software system calculations.
Highlights
Hydroelectric power stations are considered to be hydro-engineering constructions of high level of hazard (1st Degree Amenability according to the classification accepted in Russia)
Metal spatial lattice roofing structures of “Structure” type have been successfully used in mechanical equipment rooms of hydroelectric power stations
Comparative analysis of metal structures used in roofing of mechanical equipment rooms of hydroelectric power stations in Russia showed that only two types of such constructions are usually used
Summary
Hydroelectric power stations are considered to be hydro-engineering constructions of high level of hazard (1st Degree Amenability according to the classification accepted in Russia). Metal spatial lattice roofing structures of “Structure” type have been successfully used in mechanical equipment rooms of hydroelectric power stations. Structural roofing installation can be done as follows: by balanced erection, by erection on design level of trestlework, by erection of the whole construction or its large parts on the ground, by erection of its enlarged blocks. Almost all these types of erection have been tested on different construction sites [1]. Important stage of economic design of large-span metal rod systems is application of methods of optimization [2–6]
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