While calculating the thermal stress, the influence of concreting time and the arrangement of post-pouring belt on the thermal stress should be considered.

The theory value of the spacing and the time sealing of the later joint-filled slots and some proposals on the plane form are presented on the basis of numerical calculation.

The conclusions of this paper can guide the construction of the later joint-filled slots. On studying temperature and thermal stress of the later joint-filled slots, the new method is offered.