**4.2 Construction quality control**

According to the fine adjustment result data uploaded at the construction site, the control platform automatically calculates the qualified rate and the percentage by which the limit of each indicator parameter is exceeded according to the allowable limit set by the user for the fine adjustment of the track board. For example, the platform will display the statistical results in the form of charts and provide the function of querying detailed data of fine adjustment. The fine adjustment data which exceeds the limit will be marked in red in the table for processing. Statistical indicators and parameters include:

*Perspective Chapter: Intelligent Construction Technology of Ballastless Track for High-Speed… DOI: http://dx.doi.org/10.5772/intechopen.109611*

**Figure 14.** *Project schedule management.*


After the track plate is perfused with self-compacting concrete, the rail seat is measured again. According to the acceptance standard, the deviation of the height and center line of the rail seat is controlled, and the qualified quantity is counted automatically in the platform and fed back to the management personnel along with with the early warning mechanism.

Track slab retest progress and accuracy pass rate statistics, including elevation of rail seat, center line of rail seat, elevation of adjacent slab rail seat, center line deviation of adjacent center line of rail seat deviation are produced (**Figure 15**).
