Standard 400m track and field venues, asphalt concrete basement construction sequence is very important, often due to the poor arrangement of asphalt concrete paving, it may affect the progress of the project, and even affect the quality of the project. At the end of the 1970s, the Beijing Workers’ Stadium contracted asphalt concrete paving operations for the first time, used a fully automatic asphalt concrete paving machine, had 9 foreign experts, cooperated with 24 domestic skilled workers, and only conducted asphalt concrete paving operations. It takes up to 9 days for a maximum of 1 day to spread 170t of asphalt concrete and 15t of asphalt concrete for at least one day. At present, Beijing builds a new 400m standard track and field field and generally completes the asphalt concrete work for three days.
Asphalt concrete consists of upper and lower two-story structures:
Paving the asphalt concrete on the first working day, see figure 1.4.15. The main runway shall be paved by machinery first, and the paving operation shall be carried out in full width. At the same time, the surrounding auxiliary areas shall be paved manually, and then two semi-circular areas shall be paved. Machine operations, where no paving can be done, are performed by manual paving operations, and the entire floor of asphalt concrete is completed within one working day.
In the second working day, the upper asphalt concrete in the thickened areas will be paved, the high-thickening areas will be thrown, javelin throws will be run on the runway, operated by asphalt concrete pavers, and other long-distance runways, struts and runways, 3000m obstacle pools, 100m and 110m start-up areas and other thickening areas, by artificial paving operations.
On the third working day, the upper asphalt concrete shall be paved and paved first in two semicircular areas. The paving machine shall be used for paving and manual operation shall be carried out. After the semicircle area is completed, the main runway will be paved with the auxiliary area for manual paving. It can ensure that after the upper asphalt concrete is paved, all motor vehicles cannot be driven on it, ensuring the smoothness and cleanliness of the asphalt concrete surface and improving the overall project quality.
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