【In-depth Discussion on Modular Installation of HaiChuan】Module installation of 04 frame steel structures

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Case Study Introduction: On the afternoon of March 16, 2017, the largest steel structural module for the reaction and regeneration framework of Maoming Petrochemical’s 1.5 million tons per year continuous reforming unit was lifted into place and its construction was completed. This is another achievement resulting from the meticulous organization by the Project Department of the 10th Construction Company’s Maoming Petrochemical Reformation Project, as well as the hard work of the installation and heavy-lifting crew. The total weight of the steel structure of this framework is 974 tons, and its height is 76 meters. To ensure safe, high-quality, and rapid installation, the Shijian Project Department carried out thorough planning, organized the construction in a scientific manner, optimized the construction plans, and increased the degree of prefabrication. The entire steel structure was assembled on the ground in separate sections or modules, which were then lifted and installed using large cranes. The 12-story frame steel structure, with a height of less than 46 meters, was divided into 15 steel components starting in late November last year for on-ground assembly; thereafter, these components along with the major equipment within the framework were lifted and installed in sequence, with the installation completed before the Spring Festival. For the steel structural framework in the 13th to 18th floors, spanning from 46 meters to 76 meters in height, the Shijian Installation Team followed the construction plan to prefabricate and assemble components such as steel columns, steel beams, connection members, platform grating, diagonal ladders, and railings on the ground in two sets of modules. The module set on the north side is 7.5 meters long, 7.5 meters wide, 23 meters high, and weighs 68 tons, while the module set on the south side is 7.5 meters long, 7.5 meters wide, 27.6 meters high, and weighs 91 tons. On March 14 and 16, the heavy-lifting team from Shijian used a 500-ton crane for the main lifting operation and a 270-ton crane to assist, successfully lifting and installing the two sets of heavy modules in a safe manner. The modular construction of the reactive regeneration framework has been completed, which speeds up the installation process, reduces construction costs, enhances safety, quality, and efficiency, and establishes a positive image of the construction work. This creates the conditions necessary for the full-scale installation of pipelines in the facility.

The largest crane I have used was 300 tons; I have never seen a 750-ton crane in person

Consider the construction requirements of the equipment; the trend is toward larger-scale construction, and modularization is a key approach to achieving this

For a 750-ton crane, dozens of trucks are needed for the counterweight.

【In-depth Discussion on Haichuan’s Modular Installation】03 Pipeline Trunking Modules for Overseas Refining Projects http://bbs.hcbbs.com/thread-1765577-1-1.html (Source: Haichuan Network)

You can take a look at this post featuring collected information on domestic 1600-ton crawler cranes: http://bbs.hcbbs.com/thread-1012843-1-1.html (Source: Haichuan Network)

Use a Demag 1,250-ton crawler crane to lift the polyethylene frame steel structure.

This is worth promoting: 1. It significantly reduces the difficulties and risks associated with working at heights; 2. It improves work efficiency; 3. It reduces the need to set up and dismantle scaffolding at heights; 4. It makes full use of the capabilities of large cranes, thereby enhancing their efficiency; 5. It requires strong project coordination skills