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Isolation bearing
Lock-up device bearing (LUB)


Product introduction:

Lock-up device bearing (LUB) is the combination of bearing and Lock-up device (LUD). It could redistribute the stress of each pier at the same time of maintaining the function of bearing. Under normal operation of bridge, TJGZ- Lock-up device bearing will function as ordinary bearing without using LUD; under the effect of braking force, wind load or seismic load, the LUD will lock up automatically, then, the former shifting bearing will transform into fixed bearing instantly and the movable piers will turn into fixed piers to distribute the horizontal load of superstructure to each pier effectively. Thus, it reduces the stress of former fixed piers and makes the design of the piers more reasonable.


Projects cases:

Chengdu – Dujiangyan High-speed Rail, Xiamen – Shenzhen Passenger Railway Line, Jialing River Double-track Grand Bridge of Lanzhou – Chongqing Railway Line, Southeast Ring Line of Kunming Railway, Kunming – Yuxi Railway Line, Shanghai – Kunming Railway Line, Kunming Railway Hub, Minjiang Grand Bridge of Leshan – Zigong Expressway, Lanzhou North Ring, Zhengzhou – Kaifeng Interchange Overpass

  • Xiamen-Shenzhen Railway

    Xiamen-Shenzhen Railway is a high standard line which is primary for passengers, and takes cargoes into consideration at the same time. It connected three special zones, which are: Xiamen, Shantou and Shenzhen, and it plays an important role for improving the development of social economy. This line has many continuous bridges with large span, and installed LUB (TJGZ-LUB)-which optimizes the distribution of the power of the abutment.

  • Chengdu-Dujiangyan High-speed Railway

    Chengdu-Dujiangyan High-speed Railway is the significant post-disaster reconstruction project of the Wenchuan Earthquake, it requires the shape of the pier of the continuous bridge is the same as the simple bridge, and reduce the weight of the abutment at possible, and so it is necessary to install LUB. Because of the lock effects of the LUB, it can distribute the stress power of the pier, and optimize the size the abutment, reduce the cost, it is economic.

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