Abstract
Recently in Russia about 100% of buildings of an oil and gas complex are built with use triplex a sandwich of panels (S.P). Almost all these buildings are explosive and increase in their exploisure-resistance requires application of easily thrown off or safety designs. A sandwich of the panel is an ideal applicant for a role of safety designs according to the weight characteristics. Except inertial properties extremely important characteristic is opening pressure. This size remains acritical in view of a variety of their sizes, thickness of metal sheets, a variety of their fastening to metal designs. In work opening pressure at explosion for a sandwich of panels of 2×1,2 m in size for various options of fastening is experimentally received. We suspect that load of one knot of fastening does not depend on the panel sizes, only on the knot device. For various ways of fastening design pressure of opening in case of a normal distribution of durability of clusters is defined. The criterion for assessment of effectiveness of the panels used as safety designs is received. This criterion determines the maximal pressure upon dive during opening. The received criterion confirms effectiveness a sandwich of panels as a safety design.
Highlights
MethodsIt is necessary to watch dynamics of change of pressure taking into account development of the center of explosion and the expiration of gases through apertures in the protecting designs
A large number of the buildings and constructions with use a sandwich of panels have been built recently
'P t ab, mpk - the mass of the thrown off designs, X (t) – the distance passed by the thrown off designs after opening, ΔР(t) – the changing pressure upon the thrown off designs
Summary
It is necessary to watch dynamics of change of pressure taking into account development of the center of explosion and the expiration of gases through apertures in the protecting designs. There is a speech about quasistatic development of process of the explosion caused by deflagration combustion of combustible gas system. Pressure at such explosion is identical in all points of the room and changes in time. At flame propagations of W< 30 m/s explosion quasistatic. Many works as domestic and foreign experts are devoted to this problem [1-15]
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