Innovative Design of Movable Bridges - Heavy Movable Structures ...

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3.2 The swing bridge 3.2.1 Bridge deck The a swing bridge has two cantilevers of 33,5 m each, Fig. 3.2 a. b Fig. 3.2: Swing bridge: a) Layout, b) Prestressing 8
The cross-section consists of - a trapezoidal box girder with a width of 7 m at its bottom and 10,5 m at the top - two 5,25 m wide cantilevers. The bridge deck is prestressed in the longitudinal as well as in the transverse direction, Fig. 3.2b. For the launching, continuity tendons were introduced at both bridge ends which were cut after the bridge had reached its final position. 3.2.2 Main pier The main pier consists, Fig. 3.3a, of - the massive pier table square 12,8 m - the hollow shaft square 6,5 m, with a wall thickness of 1,0 m - the 2,0 m thick pile cap - 16 drilled piles Ø 2 m with a length of about 40 m. The pier table is heavily prestressed, Fig. 3.3b. The bridge deck rests at the pier on a turning circle with a radius of 10 m, Fig. 3.3c. a b c Fig. 3.3:Main pier: Layout, b)Prestressing of the pier table, c) Turning circle 9
Page 1 and 2: HEAVY MOVABLE STRUCTURES, INC. TWEL
Page 3 and 4: 1.2.2 Swing bridges Swing bridges a
Page 5 and 6: a b Fig. 2.1: The finished lift bri
Page 7: 2.2.4 Mechanical installations The
Page 11 and 12: Fig. 4.1: Tender Design 4.2.2 Bridg
Page 13 and 14: 4.2.4 Mechanical equipment The brid
Page 15 and 16: In the service position the bridge
Page 17 and 18: 6.2.2 Approach Bridges a) Structura
Page 19 and 20: c) Safety factors Under the spectru
Page 21 and 22: a) b) Fig. 7.2: Section forces of a

Innovative Design of Movable Bridges - Heavy Movable Structures ...

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