| 摘要 |
construction engineering. SUBSTANCE: trussed beam is used in detached structures (such as rigid cross-bars to arrange lighting fixtures of railway stations and other places, rigid cross-bars of contact system of electrified railways, etc. ) and in coverings of buildings and structures. Trussed beam has purlin, posts of trusses provided with guides on their ends; closed flexible tie bars easily passing through curvilinear guides installed on ends of purlins; supporting parts of trussed beam are made in the form of tilted hinged systems joined to telescopic inserts of purlin which is provided with supporting clamps with tensioning devices. EFFECT: improved stability of trussed beam to self-adjusted load-dependent forces. 2 cl, 2 dwg
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