Research on Synchronization of Jacking up based on Programmable Logic Controller (PLC) to ｒｅｐｌａｃｅ Bridge Bearings 

Jiabin CAO 

School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing, 400074, CHINA 

Abstract: Bridge bearing is an important component of bridge structure, which has the effect of continuity, the design, construction, traffic ｌｏａｄ and natural aging, tend to produce a variety of diseases. Based on the PLC computer control synchronous jack-up replacement is a kind of advanced technology to ｒｅｐｌａｃｅ the current method, it uses the computer to do the control center, through the programmable controller) preprogrammed function module, realize the logic operation, sequence control, timing, counting and arithmetic operations such as user-oriented instructions, and through the digital ｏｒ analog input/output control various types of machinery ｏｒ production process. Keywords: Bridge bearing; Programmable Logic Controller; Style; Synchronization jacking up