Study on influence of installation method on thermal cracking behavior of float glass

doi:10.16265/j.cnki.issn 1003-3033.2021.07.009

Abstract

Abstract: In order to study influence of different installation methods on cracking behavior of float glass in the process of building fire development. Taking float glass with size of 600 mm×600 mm×6 mm as research object. Five installation modes were adopted, such as point support, frame support (4 side shielding, left and right shielding, upper and lower shielding) and no shielding, crack behavior of float glass under different installation modes under thermal load was analyzed, characteristic parameters such as the first crack time, glass surface temperature and air temperature, crack initiation position and crack propagation behavior of float glass were obtained. The result shows that float glass with non-masking installation mode does not crack under thermal loads, and its fireproof performance is the best. The first crack time of float glass installed with point support is the shortest, cracks are mainly straight cracks, and crack initiation position occurs at the support point of glass, and its fire resistance is the worst.

Key words: installation method, float glass, thermal crack behavior, thermal load, crack propagation

CLC Number:

X932

ZHANG Yanni, WEN Xinyu, FENG Zhichao, LIU Chunhui, HOU Yunchao. Study on influence of installation method on thermal cracking behavior of float glass[J]. China Safety Science Journal, 2021, 31(7): 63-69.

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