Bridge structure generally includes bridge span structure, bridge pier and abutment, foundation, upper structure, bearing, taper revetment six parts, and bridge pier is bearing bridge span structure and the constant load and live load, such as vehicle pass to foundation of buildings. Pier many are made by special factory production transportation to the scene after the construction, this is called the field construction method, through measuring unreeling, record numerical, check the size of the edge, edge and prefabricated bridge pier column of the contact surface to chisel wool processing, and to the precast block column side use chalk line popup center line and level control line, so that takes place when its position control. Pier column before installation need to any part of the pier column size measurement inspection ensure pier column installed the tops of the elevation comply with the design requirements.

Will Angle sensor simple fixed on the pier the tops of the department, in the pier lifting process can real-time clear understanding to the pier inclined accurate Angle, the crane operator provides accurate pier basic posture, could be the operator more easily operate, thus make the bridge pier lifting accuracy and safety degree is higher, the bridge construction has now become the indispensable part.