Driving on the non-navigable bridge of the Shenzhong Passage, you can see the beautiful scenery of Lingdingyang. The Shenzhong Passage under construction is like a "giant dragon" lying on the waves. On the flat and smooth steel bridge deck, all kinds of intelligent pavement equipment machinery roar, a hot scene. With a total length of about 24 kilometers, the Shenzhen-China Channel is a super project in the Great Bay Area that integrates "bridges, islands, tunnels and underwater communication". Among them, the construction scale of steel bridge deck pavement of this project is 380000 square meters, which is the largest epoxy asphalt pavement construction in the world at present. Not long ago, the single-day paving area of the steel bridge deck of the Zhongshan Bridge on the Shenzhen-Zhonghua Channel reached more than 22300 square meters, setting a new world record for hot-mix epoxy asphalt pavement of the steel bridge deck. Aiming at the "big battle" of construction in the dry season, the intelligent equipment shows its magic power "to carry out asphalt pavement on the smooth steel plate, just like pasting plasticine on the glass, which should not only take into account the interlayer adhesion, shear resistance, but also ensure the load bearing capacity and durability There are many structural processes, such as two layers of epoxy resin bonding layer. There are six processes and five structural layers in the whole process. The thickness is only 6.5 cm. The process standard requirements and construction difficulties are extremely high. It is understood that due to the particularity of pavement construction, the construction of steel bridge deck of deep and medium channels can only be carried out in rainless weather, so the asphalt pavement operation of 380000 square meters can only aim at the two dry seasons of last winter and spring and this winter and next spring to carry out a "big battle". How to complete the asphalt pavement work quickly and well? Mao said that the key lies in intelligent equipment and intelligent operation. In order to achieve the construction goal with high efficiency and quality, the construction team not only transformed the mixing equipment, but also developed and applied the epoxy resin intelligent painting system for the first time in the world, replacing the traditional manual painting. The efficiency of a single machine reaches 1500 square meters/hour, and the work efficiency has been improved by 3-5 times, realizing the automatic production and painting of waterproof adhesive layer materials, and the construction efficiency and quality have reached the world's leading level. "At present, our single-day pavement area can reach more than 20000 square meters, with a maximum of 25000 square meters." Mao said that the project will strive to complete the 150000 square meters of steel deck pavement on the side of Zhongshan Bridge by April this year, and the remaining 230000 square meters will be started in October this year, and strive to complete the pavement construction of the whole line as soon as possible, laying a solid foundation for the realization of the goal of opening the Shenzhen-Middle Channel to traffic next year. It is reported that in the face of the new challenges of the large scale and high construction requirements of the steel deck pavement of the Shenzhen-Middle Channel, as well as the changeable climate and the high temperature, high humidity and high salt offshore environment, the Shenzhen-Middle Channel construction team has developed the epoxy zinc-rich paint intelligent spraying system after nearly 9 months of planning and preparation, technical data support and experience accumulation in three test sections The three systems of epoxy resin intelligent coating system and epoxy resin automatic weighing and dropping system have built an information platform integrating dynamic video and Beidou positioning, which has created a precedent of all-link mechanized and intelligent construction and greatly improved the construction efficiency. Today's infrastructure projects are no longer simply piled up with steel and cement. As huge
Edit：Hou Wenzhe Responsible editor：WeiZe
Source：South Net
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