400m track and field venues, due to the need to consider the safety of athletes and training needs, often outside the main track, plus a number of plastic surface, known as the aid area. Therefore, during the construction of the grass-roots level, it is necessary to study at the same time. Although the main runway should be arranged mainly during construction, there will be many construction joints if construction is to be carried out separately. If this part of the construction is followed, many construction machines and transportation vehicles will pass through the main runway. Will cause unnecessary damage to the main runway. Therefore, it is advisable to arrange construction of the auxiliary area at the same time as the main runway, especially for asphalt concrete and lower floors, and at the same time for construction.
Asphalt concrete paving in the auxiliary area shall be organized by a group of skilled workers. The day of paving the main runway shall be 1 to 2 hours ahead of schedule. According to the overall paving order, the four parts of the auxiliary area shall be ordered in advance according to the drawings. After paving, see Figure 1.4.18. After the completion of the first zone, the asphalt concrete paver starts operations. After the paver finishes, the joints are leveled and connected manually by hand. After the second zone of the artificial paving is completed, the paving machine arrives, and will be connected. The seam is flat and smooth. The third area was paved by hand until it was completed.
1 - Artificial first paving operation area; 2 - Artificial second paving operation area; 3 - Artificial third paving operation area;
4—Manual 4th Paving Operation Area; 5—Starting Position of Asphalt Paver Operation
The auxiliary area for manual paving shall be controlled by a surveyor using a 5mx5m square grid method. The outer edge of the main track and the auxiliary area are often variable slope points. Only with the measured height control, do not use the eyes to keep the height high. Deformation of the main runway slope.
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