On the afternoon of August 1, in the Cuizhai area of Jinan's new and old kinetic energy conversion starting area, the infrastructure project of the new energy and new material industrial park has risen from the ground, and workers are carrying out fireproof coatings, roof waterproofing and indoor installation. "The project is all constructed with steel structure, with a maximum span of 92.4m and a maximum lifting weight of 1800t, which is difficult to construct and creates a new record for steel structure engineering in the starting area." Liu Feng, the person in charge of the project, told the New Yellow River reporter that the entire project will be completed by the end of this year and is expected to be completed by the end of May 2025.
It is understood that the C-2 plot of the infrastructure project of the new energy and new material industrial park in the starting area is located east of Fengling Road, south of Hydrogen Valley Road 2, north of Hydrogen Valley Road 3, and west of Qingninggou West Road. The construction investment of the project is 1.38 billion yuan, with a total construction area of about 138,000 square meters, with 5 floors above ground, the first to third floors are production plants, the fourth to fifth floors are scientific research office areas, and 1 underground floor. The construction of the project began on April 12, 2023, and the steel structure was capped on May 31 this year.
Looking at the building frame up close, the New Yellow River reporter noticed that the building was not an ordinary concrete structure, but a steel structure building. Liu Feng introduced that the project is all steel structure prefabricated buildings, compared with the traditional construction mode, the construction period can be saved at least 3 months.
Such a structure also determines the large amount of steel used. The total number of steel structure components of the whole project exceeds 10,000 pieces, and the maximum monthly steel structure installation exceeds 13,000t. In construction, it is difficult to identify the production, transportation and installation status of large-scale steel components.
"In response to these problems, we innovatively apply the material tracking technology of RFID and new construction BIM platform to realize the identification and positioning of individual and batch components, scientifically delineate the storage capacity and single-day transportation volume of the material yard according to the on-site progress, and efficiently complete the interspersed construction of each process." Liu Feng said.
Judging from the main structure that has been completed on the site, there are obvious overhangs and setbacks in the middle of the building structure.
"In a bold design way, the project unfolds production and R&D as a flat floor, and flips the innovative scientific research office area upwards into another parallel flat floor, building a 'parallel world' to show the effect of power, technology and shock." Liu Feng told the New Yellow River reporter that the maximum span of the steel structure of the project is 92.4m, the maximum cantilever is 30m, and the maximum building height is 46.2m. The bottom production area as a whole adopts the "setback structure" of the building volume falling to the southwest to create a "friendly interface" facing the city; The upper scientific research area is a steel truss structure supported by the core tube of the group, and the overall "annular structure" with large-span suspension is adopted to create a light and dynamic "crown of production and research".
Whether it is the architectural design style of "parallel world" or the maximum span of 92.4m steel structure, there are great difficulties in the construction process. Judging from the main structure that has been completed so far, these difficulties have been overcome.
"The construction of the project is difficult, and it has created a new record for the steel structure project in the starting area. The 4-5 floors of the scientific research area, which appears to be suspended from the sky, are realized by the tensile action of a steel truss structure supported by the core tube of the group and 48 high vanadium cables. According to the technical personnel of the project, in view of the difficulties in the construction of the long-span steel corridor, the construction party has developed the whole-process data monitoring and control technology of the large-span suspended steel truss, and realized the automation and intelligence of the hydraulic hardware through the use of intelligent collaborative control system, and the synchronous control of displacement and force can be realized at each control point to realize the synchronous lifting of the steel truss. Through non-contact monitoring equipment such as vibrating wire sensors and 3D laser scanners, the digital information of the super-large span steel structure in the construction process is obtained, and the stress and deformation information are obtained, which are extended to the structural construction and health monitoring platform through the digital twin mode.
From the perspective of the erection of high vanadium cables, in view of the complex cable joints and difficult construction, the project uses BIM technology to deepen the box-type perforated joints and cable tensioning tooling, and form a standardized deepening design process. According to the prestressed tensioning characteristics of the cable, a standardized tensioning process is formulated to ensure the tensioning quality.
"In the future, the building will become one of the landmark buildings in the Cuizhai area of the starting area." Liu Feng said that the office area of the project is an ultra-low energy consumption building, which will make full use of renewable energy sources such as solar energy and shallow geothermal energy in the plot, and achieve the goal of energy conservation and emission reduction while realizing the two-star green building and ultra-low energy consumption building.
At present, the construction of the main body and secondary structure of the project has been completed, and more than 500 construction personnel are carrying out fireproof coatings, roof waterproofing and other operations. In the next step, the project will carry out the decoration work in full swing and is expected to be completed by the end of May 2025.
The relevant person in charge of the Industry Promotion Department of the Management Committee of the Start-up Zone said that the project is a "parallel space" created for the robot and aerospace advanced equipment innovation base project, and the next step will be to do a good job in attracting upstream and downstream projects related to the robot industry, strengthen the cooperation between upstream and downstream enterprises in the industrial chain, and actively set up relevant funds to provide good services in terms of enterprise landing, talent training and introduction.
Reporter: Huang Min Photographer: Huang Min Editor: Han Luying Proofreader: Liu Tian