Monitoring method for vertical displacement of bridge type shield rail

The invention discloses a monitoring method for vertical displacement of a bridge type shield rail. The monitoring method for the vertical displacement of the bridge type shield rail comprises a laserrangefinder, a laser measuring board, a rail, a shield machine and an information processing terminal. The monitoring method for the vertical displacement of the bridge type shield rail can avoid theinfluence of horizontal displacement, measure the vertical offset of the rail in real time and accurately during the construction of the bridge type shield machine, feed back to an operator of the shield machine, and then adjust the shield machine according to data. The vertical displacement can further be used as a basis for whether the rail needs to be repaired or not after construction. 本发明公开了一种桥式盾构铁轨垂直位移量的监测方法，包括激光测距仪，激光测量板，铁轨，盾构机，信息处理终端。本方法能够避免水平位移量的影响，在桥式盾构机施工时实时准确的测量出铁轨垂直偏移量，并反馈给盾构机操作人员，再根据数据调整盾构机，该垂直位移量还能作为施工后铁轨是否需要维修的依据。