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What are the Differences between Movable Support System and Bridge Girder Launcher?
2015-06-08 16:33
What are the Differences between Movable Support System and Bridge Girder Launcher?
Supported by box girder and coming with beam templates, movable support system (MSS) is a kind of bridge construction machine in cast-in-site method.
Bridge girder launcher will carry and lift precast concrete girder and put the bridge girder on the girder carrying vehicle, then girder carrying vehicle feed the bridge girder into bridge girder launcher to realize the bridge erection.
Here are the differences between MSS and bridge girder launcher:
1.MSS will omit the step of beam prefabrication on the precast yard and beams can be made directly on abutments. One piece of bridge girder will be erected during twelve days. Bridge girder launcher will finish beam prefabrication. On the help of girder transporter, the girders will be carried onto the bridge deck to finish the bridge erection.
2.The complete period of MSS is longer than bridge girder launcher and it is in low invest and high revenue. Investment of bridge girder launcher is higher, but it has a short complete time for bridge erection.
3.There is no need to make use of large equipment additionally and bridge construction work can be opened after short-time preparation if you considerate adopting movable support system. However, as for bridge girder launcher, bridge construction companies must purchase gantry crane and girder carrying vehicle.
4.MSS is in small floor area and low cost. The bridge construction method of movable support system(MSS) is suit for mountainous area, where is not able to built large precast yard. However, if there is a large prefabrication yard near the bridge construction yard, a bridge girder launcher will be welcomed.
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