380 tons! 140.27 meters! This super high-rise special-shaped steel bridge successfully upgraded

Recently, the special-shaped steel continuous bridge with a longest span of about 32.6 meters and a weight of 380 tons, built by Beijing Urban Construction North Group, was successfully upgraded to an altitude of 140.27 meters to realize the "interconnection" of three super-high-rise towers, indicating that the overall upgrading technology of the group's super-high-rise special-shaped steel structure has reached the international leading level.

The Malaysia Hauli Sofitel Hotel Complex Project is located in the center of Kuala Lumpur, Malaysia, 200 meters away from the Kuala Lumpur Petronas Twin Towers. It is a five-star hotel, commercial, 5A office building and high-end apartment developed by Singapore Hauli Group. Comprehensive project. The total construction area of the project is 260000 square meters, including 3 towers and 7 floors of podium. Among them, 1# building 85 floors, building height is 345 meters, 2# building 50 floors, building height is 220 meters, 3# building 30 floors, building height is 150 meters.

After the completion of the project, the senior apartment building 1# will become one of the tallest apartment buildings in Kuala Lumpur, refreshing the new height of Malaysia's fully cast-in-place concrete structure project and becoming another landmark building in Kuala Lumpur, Malaysia.

The project includes a high-altitude steel bridge and a low-altitude steel bridge. Among them, the high-altitude steel bridge connects the 1# and 2# buildings, with a span of about 21.8 meters, a total weight of about 77 tons, and a lifting height of 204.25 meters. The lifting was completed in January this year.

The low-altitude steel continuous bridge lifted this time presents an irregular shape, the truss structure of the steel continuous bridge is relatively complex, and the stress of each lifting point of the overall lifting is unbalanced. It is necessary to strictly calculate the site conditions and lifting safety parameters, which brings great challenges to the construction. However, the Group successfully overcame these difficulties with its advanced construction technology and rich project experience.

In order to improve the assembly efficiency of the steel bridge and reduce the demand for site use, the project department has built a platform under the projection surface of the steel bridge for overall assembly and welding, laying a solid foundation for the overall improvement of the steel bridge.

In order to ensure the smooth completion of the overall upgrade of the steel bridge, the project team made careful planning and careful deployment before the upgrade. Simulate and analyze the entire lifting process through BIM technology to ensure the accuracy of lifting and hovering docking. The lifting points all adopt the "cantilever tower lifting point" as the support point of the lifter to ensure that the lifting process is safer and more stable. Sliding hinge supports are set up in 1# building and 2# building, and the "sliding deformation joint cover plate" technology is adopted for the deformation joint between the steel bridge and the tower, which can not only ensure the beauty of architectural decoration but also ensure the safety of structure.

In the lifting process, the project department adopts advanced hydraulic lifting technology to dynamically adjust and monitor the hydraulic oil volume, pressure, flow and other parameters of the hydraulic cylinder, and introduces a lightning meter and an anemometer to monitor the impact of the weather on the lifting in real time. Ensure the safety and accuracy of the entire lifting process.

The smooth overall improvement of the steel bridge has been highly recognized by relevant local government departments and professional institutions, demonstrating the group's comprehensive technical strength and project management capabilities in the field of overseas super high-rise buildings, and demonstrating the joint construction of the "Belt and Road". Enterprise wisdom and strength.