[Explanation] On December 3, as one of the country’s seven major foreign investment projects, the BMW Group’s world’s largest production base—the largest single-unit plant in the new Tiexi plant of BMW Brilliance, was constructed by the Northern Company of China Construction Second Bureau. The final assembly logistics workshop formally passed the completion acceptance.

It is worth noting that under the nearly demanding high standards of the owner, the China Construction Second Engineering Bureau still achieved zero rework and delivered the final assembly workshop to a higher standard than the owner.

  [Explanation] It is understood that the final assembly workshop completed this time is the largest assembly logistics workshop of the BMW Group in the world.

It contains 3 single buildings of the final assembly logistics workshop, the logistics elevated warehouse and the final assembly workshop restaurant.

The biggest feature of the project is its huge total construction area-about 300,000 square meters, which is the area of ​​more than 42 standardized football fields.

Therefore, the steel consumption of the final assembly workshop reached a staggering 30,000 tons, which is equivalent to the steel consumption of 4 Eiffel Towers.

  [Concurrent] Xue Wen, Project Quality Director, BMW Brilliance (Tiexi) Final Assembly Logistics Workshop, Northern Company, China Construction Second Bureau

  It (the assembly workshop) uses a large amount of steel, that is, it needs to quickly organize various resources. The steel, the finished steel column, and the steel truss are put into the site according to the requirements of the construction period.

How to plan the steel for a construction deployment on the site, where to put it, place it, and install it. The installation needs to be accurate.

It is also a difficult point that we need to study.

  [Explanation] In addition to the huge construction area and complex process difficulty, the project team of the China Construction Second Engineering Bureau also has to face a bigger problem, that is, the owner's BMW Group's ultra-high project standards.

Its requirements are much higher than the national standard.

  [Concurrent] Xue Wen, Project Quality Director, BMW Brilliance (Tiexi) Final Assembly Logistics Workshop, Northern Company, China Construction Second Bureau

  Normally, our national standard of (Floor Flatness) is a requirement of four millimeters (error) for every two meters. Then, on the basis of this requirement, we increase it by two millimeters, which is a two-meter leaning ruler, and then lean on the ground. , And then there are two millimeters, which is about this wide and an error.

Every increase of one millimeter is a challenge. This two millimeters, we have also done in-depth research on this, and then achieved it through some advanced technologies.

  [Explanation] With the help of science and technology and rigorous construction, the China Construction Second Bureau perfectly fulfilled the requirements of the BMW Group.

Even higher than BMW's requirements.

During construction, the project team also incorporated the concepts of saving resources and reducing carbon emissions.

  [Concurrent] Xue Wen, Project Quality Director, BMW Brilliance (Tiexi) Final Assembly Logistics Workshop, Northern Company, China Construction Second Bureau

  Our exterior wall, exterior wall panel, now has a construction area of ​​88,000 square meters, or 19,000 yuan.

It is probably a concept, that is, if our board is to be connected, it is equivalent to the length from Beijing to Tianjin, but these joints are prone to cold bridges.

Then we conducted research on this seam, which is prone to cold bridges.

Now we measure the temperature of the entire joints on the external wall panels by infrared rays, that is, we have temperature measurements and records for every panel seam, forming a data analysis.

Now it is basically our insulation rate, which can reach more than 95%.

  [Explanation] It is reported that the construction of the final assembly workshop of the BMW Brilliance Tiexi plant started on March 15, 2020, and has solved nearly ten problems such as the construction of super long steel structures, the flatness of super large areas, and the control of cracking prevention.

At the same time, the application of advanced technologies such as non-perforated mechanical fixing technology, TEKLA steel structure modeling, CNC machine tool quenching drill sleeve formation, and floor armoring joint construction, while improving construction efficiency and construction accuracy, also guarantees the quality of the project. And safety.

It has a great impact on the future growth of the project team itself.

  Reporting by reporter Yu Ruizhai from Shenyang

Editor in charge: 【Luo Pan】