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Wind and Structures Volume 36, Number 4, April 2023 , pages 263-275 DOI: https://doi.org/10.12989/was.2023.36.4.263 |
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Wind load parameters and performance of an integral steel platform scaffold system |
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Zhenyu Yang, Qiang Xie, Yue Li and Chang He
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| Abstract | ||
| As a new kind of construction facility for high rise buildings, the integral steel platform scaffold system (ISPS) consisting of the steel skeleton and suspended scaffold faces high wind during the construction procedure. The lattice structure type and existence of core tubes both make it difficult to estimate the wind load and calculate the wind-induced responses. In this study, an aeroelastic model with a geometry scale ratio of 1:25 based on the ISPS for Shanghai Tower, with the representative square profile, is manufactured and then tested in a wind tunnel. The first mode of the prototype ISPS is a torsional one with a frequency of only 0.68 Hz, and the model survives under extreme wind speed up to 50 m/s. The static wind load and wind vibration factors are derived based on the test result and supplementary finite element analysis, offering a reference for the following ISPS design. The spacer at the bottom of the suspended scaffold is suggested to be long enough to touch the core tube in the initial status to prevent the collision. Besides, aerodynamic wind loads and cross-wind loads are suggested to be included in the structural design of the ISPS. | ||
| Key Words | ||
| crosswind effect; high-rise building; suspended scaffold; wind load; wind tunnel test; wind vibration factor | ||
| Address | ||
| Zhenyu Yang:Earthquake Engineering Research & Test Center, Guangzhou University, Guangzhou, China Qiang Xie and Yue Li:Department of Civil Engineering, Tongji University, Shanghai, China Chang He:School of Civil Engineering, Central South University, China | ||