a new landmark "gate of information" will be added to the south of beijing
2024-09-24
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a beijing youth daily reporter learned from china construction eighth engineering bureau on the 23rd that the national financial information building project was officially completed a few days ago. the project adopts a "twin tower" composition with a central axis symmetry. two 200-meter-high solid towers are separated on both sides, "holding hands" with the clouds through a corridor, forming a "gate-like" shape with one up and one down, one virtual and one real, and closed at the bottom and opened at the top, implying the "gate of information". after the opening of the guojin building, it is expected to become a new landmark in southern beijing.
guojin building is located in the core area of beijing lize financial business district, with a total construction area of 227,500 square meters and a height of 200 meters. in the early stage of construction, facing the deepest foundation pit in lize business district with a depth of 28.8 meters and the construction environment adjacent to metro line 14, which is only 0.8 meters away, the project organized expert demonstrations many times, and finally formed a key technology with "underground continuous wall + anchor support construction under the condition of anchor cable intrusion in water-rich sandy strata" as the core, which ensured the safety of construction and set a record of nearly 400,000 earthworks excavated and transported in 87 days beside the west third ring road in beijing.
the octagonal cross-section corridor at a height of 100 meters has a total weight of 1,200 tons. the construction team used the "overall lifting + beveled surface + embedded segment" precise construction segmentation for the parallel trusses on both sides. through the prefabricated entity and simulated rapid pre-assembly technology, the docking accuracy of 100 meters high was achieved within 5 mm. the stacked launch cross truss at a height of 200 meters contains 3 layers of complex structure. the project innovatively split the original triangular support system into 5 small triangular systems, which were installed three-dimensionally from both sides to the middle, solving the problem of stable construction control.
the north facade of the building has the largest 100-meter-high cable curtain wall in china, covering an area of about 4,000 square meters, consisting of 56 horizontal cables, 14 vertical cables and 855 pieces of ultra-clear double-laminated hollow high-transparency glass. the diameter of the cables used in the project reaches 65 mm, which is three times that of conventional cables.
the inclined steel frame skylight curtain wall located at an altitude of 100 meters and 200 meters has an overall shape that is 47 degrees to the plane, and the area of a single glass is over 2.5 square meters, which makes it very difficult to control the construction accuracy and safety. the construction team assembled the 160 triangular glass frames of each inclined surface into 25 unit diamond-shaped skeletons on the ground, and embedded the glass after hoisting and installation. at the same time, sgp glass film is used to improve the rigidity and residual strength of the glass, and anti-falling profile structural measures are added to the edges of the glass triangles, which increases the construction accuracy and safety, and greatly improves the installation speed.
the entire project also has skylight curtain walls at 200 meters on the top of the tower and 28.5 meters on the top of the podium to maximize the use of natural light. a fitness trail with a total length of 210 meters is set up on the 22nd floor connecting the east and west towers, and sky gardens are set up at the connection between the two towers on other floors to form a rich internal green landscape.
it is reported that the national financial information building is an important achievement of the comprehensive strategic cooperation between xinhua news agency and the beijing municipal government in financial information services. it is also an important support for xinhua news agency's efforts to build a world-class new omni-media organization. it will provide a good infrastructure for the new integrated business model of "finance + technology + culture" and emerging financial industries.
