Development & Design of Large-Tonnage and Great-Height Hydraulic Continuous and Synchronous Jack-Up System

Abstract:

At present, as the increasing of ultra-large structures, the contradiction that domestic lifting equipments can not meet the requirement of ultra-large structure’s lifting has become increasingly prominent. Based on the need of ultra-large steel structures (offshore oil platforms) jack-up, using strength theory and finite element analysis, a hydraulic continuous jack-up system for ultra-large structures’ jack-up was studied in this article. A new control system, which combines mechanics, hydraulics and electrics, was presented. More particularly, the modules of speed control and multi-cylinder synchronous control for the ultra-large structure’s lifting was designed. In the WINCC environment, a human-computer interface (control software) was developed by VB to achieve the system's real time monitoring and synchronization control. All movements of the jack-up system could be controlled through the software. To conclude, the jack-up system consists of two parts: the mechanical support structures and the control system. The former can assure great height (10m or more) jack-up, and the later can accomplish multi-point (more than 4 points) synchronous jack-up.

• Periodical: Applied Mechanics and Materials (Volumes 157-158)
• Pages: 577-580
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.157-158.577
• Online since: February 2012
• Authors: Shu Min Li
• Keywords: Continuous Jack Mechanism, Real-Time Monitoring, Synchronization Control

References

[1] Y.F. Liu, H.S. Tian: submitted to Construction Technique (2008).

[2] W.G. Zhang: submitted to Traffic Engineering and Technology for National Defense (2008).

[3] J. Chen: Stability theory and design of steel structures (Science Press, Beijing 2008).

[4] S.Y. Ren: STEP7 Development Fundamentals and Application Notes (Mechanic Industry Press, Beijing 2009).

[5] H.B. Liu, X. Wang: WINCC and Its Application (Mechanic Industry Press, Beijing 2009).