| 摘要 |
FIELD: road building; guard railing of highways, bridges and overhead roads. ^ SUBSTANCE: proposed two-side bridge-guard railing unit contains post of height H with cantilever-brace installed on roadbed and provided with two longitudinal beams of complex configuration of section secured on post at preset height. Said beams, being main ones, are arranged symmetrically relative to middle axial line of post. Post rests on supporting member with two inclined walls symmetrical to said line of post. Two secondary longitudinal beams of trough section also arranged symmetrically to post are secured at preset distance in vertical over main beams whose small side flanges thrust against edges of horizontal member of cantilever. Maximum width of unit is (0.66-0.68)H. Two longitudinal through section beams of cross section equal to that of secondary beams can be secured on main beams in middle of their width, height of post in this case will be (1.48-1.50)H. ^ EFFECT: enlarged operating characteristics, improved reliability of bridge guard railing for roads designed for mixed transport, i.e. cars and trucks. ^ 2 cl, 2 dwg |
