Parking in Astana, Kazakhstan
Multi-level parking facility, Block C1, within a residential complex in Astana, designed using prestressed reinforced concrete beams and a ramp.
Load-bearing system
Floor slabs and transitions (C5 Ramp) are constructed on reinforced concrete beams with high-strength prestressed reinforcement tendons. The beams are grouped by sections at elevations +3.200 and +7.500 along X1–X42 axes, ensuring phased installation and tensioning of the reinforcement.
Prestressing
The beams use reinforcement tendons consisting of 7- and 13-strands with anchorage devices. Seven-wire K7 strands in accordance with GOST R 53772-2010 with a diameter of 15.7 mm, a cross-sectional area of 150 mm², and strength up to 1,860 MPa are used, specifically intended for prestressed reinforced concrete structures.
Anchorage zones
Along X-A axis, “dead-end” anchors are installed, fully grouted prior to tensioning, which improves the durability of the fixation joints for the reinforcement tendons. Along X-F axis, “live-end” anchors are used, from which tensioning is performed; installation recesses are provided, which are to be grouted upon completion of the work.
Gallery
Equipment for injection of pumpable materials into PT ducts, soil or rock formation.
Specialized equipment for tensioning reinforcement elements and moving structures.
Hydraulic power units (power packs) - system that applies hydraulic pressure to drive cylinders and motors of a given hydraulic system.
Equipment for construction with post-tensioning and prestressing technology.
