| 摘要 |
FIELD: construction. ^ SUBSTANCE: in prestressed steel beam with upper and lower belts, end and evenly installed intermediate stiffening bars and tightening with end anchor fixtures installed in anchor supports, and installed in guides fixed on stiffening ribs, tightening is located along upper belt of beam. Anchor supports are fixed in extreme end stiffening ribs equipped with spacer plates located under anchor supports, at that upper end of spacer plate is fixed under end of anchor support. ^ EFFECT: reduced force in tightening. ^ 3 dwg, 1 tbl, 2 ex |
