| 摘要 |
FIELD: building, particularly bridges with reinforcement and widening. ^ SUBSTANCE: frame bridge comprises posts with support diaphragms and cross-bars of box-like cross-section having longitudinal pre-stressed reinforcement members connected to cross-bar ends by end parts thereof and supported by cross-bars by means of intermediate supports. Each intermediate support is formed of fixed panel-like part joined with outer face of cross-bar wall and with lower face of concreted console of roadway cross-bar part panel. Movable parts of intermediate supports are separate for each branch of longitudinal pre-stressed reinforcement member passing into curvilinear thick-walled tube reinforced with longitudinal rib to which upper end of pre-stressed drawbar is connected. Lower drawbar end is releasably attached to lower face of fixed panel-like part. Longitudinal reinforcement members are located under concreted consoles of roadway part panel and are inserted in channels made in bosses of concreted roadway part cross-bar panel console and secured to corresponding cross-bar ends by anchors and to intermediate supports. ^ EFFECT: increased load-bearing capacity and throughput; increased residual bridge life according to deterioration and ageing criteria. ^ 4 dwg |
