The first lifting of the steel structure of T4 terminal was completed on July 10, 2020.
Terminal T4 of Urumqi reconstruction and expansion airport project, the largest single building construction project in Xinjiang undertaken by China Construction Third Engineering Bureau, has completed the upgrading of zone 3 of the largest steel roof upgrading area.
In addition to the in-situ assembly of the three floors, there are 17.5m external cantilevers on the East and South sides of the terminal respectively.
The steel roof is divided into four overall lifting areas, A total of 9 lifts are required.
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They are hoisted in blocks on the south side and temporarily lifted on the east side.
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T4 terminal project has a construction area of 500000 square meters and adopts the “main building + three corridors configuration”.
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The construction of super hyperbolic roof pipe truss is completed by one to three floor hierarchical cumulative lifting method.
Urumqi reconstruction and expansion airport project is an important international aviation hub radiating China and West Asia and connecting Eurasia, After completion, two runways and 177 stands will be added, the flight area level will rise from 4E to 4f (the highest level), and the annual passenger throughput will reach 48 million person times.
The steel roof of T4 terminal is a spatial grid structure supported by concrete-filled steel tubular columns in a double curved shape.
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Quick view of the engineering nodes 01.
Source: China Construction Third Engineering Bureau.
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The maximum lifting point reaction is 1560kn #2 large-span external cantilever installation.
The construction simulation calculation and other problems ensure that the steel roof of this piece can reach the design height smoothly and accurately.
What key construction technologies are applied in the lifting process? Let’s look at #1 super hyperbolic roof pipe truss hierarchical cumulative lifting project.
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The first lifting of the steel roof of T4 terminal corridor was completed on June 1, 2021.
The overall projected area of the roof is about 126000 square meters.
Through pre lifting, static load, continuous lifting, calibration and other processes, it is difficult to control the docking accuracy, more lifting points, more synchronization control and more members, It is easy to be interfered by the surrounding structure during the lifting, and the stress and deformation of the lifting structure and concrete structure are complex.
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The construction of T4 terminal lifting area I was completed on August 25, 2021.
11, 2021 On June 10, the third area of T4 terminal was completed.
The maximum overall lifting area 3 of this lifting is 165 meters long, The hydraulic lifting system with a width of 100m and a total weight of about 3200t is composed of 12 steel column lifting points and 10 independent lifting points.
Author: Feng Yuelong Xie Wanyu recommends Reading 1.
After reaching the three floors, they are lifted #3 other complex nodes as a whole The pipe truss structure of the project is complex, with many joints, many welding operations and high quality requirements.