High pressure Strand jack System prestressed construction jack for launching and lifting

In recent years,incremental launching was widely applied to bridge construction.It's an advanced no stand and self spanning construction method for pre-stressed concrete continuous beam bridge, no effects on navigation and traffic, shorten project duration and reducing construction cost.  Incremental launching method is to prefabricate the superstructure segments in a casting yard which is located behind the bridge abutment. Each segment is assembled and connected to the previous superstructure. then launched forward step by step with the help of sliding device(stainless and Teflon board) to the final position. KATTOR, based on above construction method, developed the CSS with characteristics of hydraulic transmission, computer control, field-bus technology and multi-point launching. It has been applied successfully in many world class bridge projects. 

Automatic control

Computer centralized control 

High accuracy

Synchronous accuracy of less than 1mm can be achieved

Flexible adaptability

Multi-points synchronous action in complicated applications, the max launching, lifting and lowering weight can reach 40,000 tons, the launching distance up to 1000 meters. 

Easy operation and high efficiency

Modularized design, easy for on-site assembly, operation and management

Safety and reliability

Adopt wired or wireless communication, high reliability
Automatic locking and unlocking function

KATTOR CSS Structures

KATTOR CSS is an intelligent system combined with strand jacks, PLC controlling system and pump 

station. A strand jack contains two cylinders which work alternately. A bundle of steel strands are guided through the hollow cylinder in the jack, the wedges of anchor system gripping the strand bundle simultaneously, this is how the strand jack carry a load. When the continuous status signal feedback by approach switch components and sent to controlling system, turn on-off the relevant magnetic valve , to control the extend and return of strand jack alternately, in this way to realize heavy-duty launching, lifting and lowering.

Need 

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