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Experimental study of wind loads on gable roofs of low-rise buildings with overhangs

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Abstract

Gable roofs with overhangs (eaves) are the common constructions of low-rise buildings on the southeastern coast of China, and they were vulnerable to typhoons from experience. The wind pressure distributions on gable roofs of low-rise buildings are investigated by a series of wind tunnel tests which consist of 99 test cases with various roof pitches, height-depth ratios and width-depth ratios. The block pressure coefficients and worst negative (block) pressure coefficients on different roof regions of low-rise buildings are proposed for the main structure and building envelope, respectively. The effects of roof pitch, height-depth ratio, and width-depth ratio on the pressure coefficients of each region are analyzed in detail. In addition, the pressure coefficients on the roofs for the main structure and building envelope are fitted according to roof pitch, height-depth ratio and width-depth ratio of the low-rise building. Meanwhile, the rationality of the fitting formulas is verified by comparing the fitting results with the codes of different countries. Lastly, the block pressure coefficients and worst negative pressure coefficients are recommended to guide the design of low-rise buildings in typhoon area and act as references for the future’s modification of wind load codes.

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Acknowledgements

This study was supported by the National Natural Science Foundation of China (Grant Nos. 51378396 and 51678452), which is gratefully acknowledged.

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Authors and Affiliations

  1. State Key Laboratory of Disaster Reduction in Civil Engineering, College of Civil Engineering, Tongji University, Shanghai, 200092, China

    Peng Huang, Ling Tao, Ming Gu & Yong Quan

Authors
  1. Peng Huang
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  2. Ling Tao
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  3. Ming Gu
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  4. Yong Quan
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Correspondence to Ming Gu.

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Huang, P., Tao, L., Gu, M. et al. Experimental study of wind loads on gable roofs of low-rise buildings with overhangs. Front. Struct. Civ. Eng. 12, 300–317 (2018). https://doi.org/10.1007/s11709-018-0449-7

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  • DOI: https://doi.org/10.1007/s11709-018-0449-7

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