| 摘要 |
FIELD: building technique, particularly for drawbridge and elevated roads construction, also for work organization on shelf. ^ SUBSTANCE: bridge includes bridge abutments, footings and sliding spans. Footings are movable in vertical direction. Upper parts of footings have rollers and may be fixed in two positions, namely in initial position and in working position. In initial position upper parts are located on support foundations on pond bottom. In working position upper support parts are located at displacement point of sliding spans. ^ EFFECT: improved reliability, reduced material consumption along with increased navigation dimensions. ^ 2 dwg |
