What Do You Need To Pay Attention To When Laying The Bailey Bridge

The lower construction lofting of Bailey bridge generally consists of pile base, cap (tie beam), column, pier cap, etc. The requirements are different, and generally follow the specification requirements or drawing requirements.

1. Pile fundamentals: The general single-row pile requires the axis to be offset ±5cm, and the pile group requires the axis to be offset ±10cm. During the inspection, the total station or theodolite plus distance meter is used to check the lofting point in the middle of the pile of the construction unit, and then the deviation in the middle of the pile is measured with a small steel ruler.

2. The axis deviation of the cap (tie beam) is ±15mm. During inspection, the middle position of the bearing table (tie beam) can be measured first, and then inspected by total station or theodolite and rangefinder. The obtained data can be used as error values.

3. Axis deviation of column and pier cap is ±10mm. During inspection, the middle position of the column and pier cap can be measured first, and then inspected by total station or theodolite and rangefinder. The obtained data can be used as error values.

4. In the process of supervision, it is necessary to require the construction unit to self-inspect and declare the self-inspection data, especially the self-inspection data of the construction unit of the pile site, and the test data of the pile site will be strictly audited. Generally speaking, the pile position is accurate, and the overshooting of other lower construction lofting is less.