BRIDGE OVER ISHYM RIVER IN ASTANA

City bridge over the Ishim River with 8 traffic lanes.
Clear roadway of bridge – Г (0.5 x 3 +4.5 +2.0 +4 x3.5 +0.5) + two sidewalks of 3 m each.
Over-water length of the bridge is overspanned by an arch span with a design span of 151.2 m. This arch structure is a combined system without horizontal thrust with a roadway on bottom boom – a flexible curve with a rigid tie. The camber of arch is 30 m.
The arch is combined with the roadway by means of a flexible suspension system, where the suspension system consists of two planes in each arch. The bridge is a doubled arch in its cross-section and consists of two arches inclined to the vertical at an angle of about 30°.
Inclined arches are combined with each other by means of rigid spacers in order to provide for plane stability. Those arches support the steel-reinforced concrete roadway by means of hangers. The height of binding beams is 3 m. The hangers are cable-stayed elements consisting of 12 strands.

CLIENT

NPO ‘Mostovik’ LLC

DESIGN STAGE

2004 – 2005

CONSTRUCTION STAGE

2004 – 2006

SCOPE OF WORK

development of architectural solutions;
structural design of superstructure;
design of construction technology;
SAC&D;
preoperational inspection and tests;
field supervision.

TECHNICAL FEATURES

diagram of the over-water length of the bridge – 35.5+150.0+31.9 m;
bridge roadway width — 32.8 m;
total weight of metal — 2,448 t;
total volume of roadway reinforced concrete slab — 1,340 m³;
weight of cables — 16 t;
‘Maurer Sohne’ bearing members with a loading capacity of 2,900 t.