The invention discloses a construction technique, that the motion of prefabricated beam on the base and the track, which can be used in box-beam moving vehicle of 
passenger transport special 
railway line. It is characterized in that: it comprises a flexible support vehicle, and two steel support vehicles, which are independently arranged on four tracks at two sides of beam producing field; and it also comprises a speed 
detector, a force 
detector, an 
alarm device, a hydraulic controller and an electric appliance controller. Wherein, the flexible support vehicle is formed by four driving single vehicles, four driven single vehicles, a hydraulic mechanical lock, a hydraulic support, a 
solid beam axle, a 
solid beam and a outer frame beam; the rigid support vehicle is formed by two driving single vehicles, two driven single vehicles, a small balance beam, a speed sensor, and a hydraulic support; the 
power transmission is completed by the transmission device of 
motor speed reducer via 
gear wheel to drive wheels; the walking of driven 
single vehicle is transmitted via small balance beam; the speed 
detector detects the synchronous property of walking; the force detector detects if the force is over the preset value; the whole support capacity can reach 900t. The invention has stable working and easy operation with beam lifting-moving functions.