Problems needing attention in calculating the bearing capacity data of fireproof glass:

a) The calculation formulas of jgj113-2003 and 97 are the same, but the parameters change slightly.

For example, the fireproof glass is changed from 1.5 ~ 3.0 to 2.0 ~ 3.0 and the adjustment coefficient of fireproof glass is increased.

b) The glass for curtain wall is still in accordance with jgj102- ×××× The two are different and cannot be mixed.

c) How to deal with the insulating glass composed of tempered glass and float glass with different thickness.

Outer tempering + inner float, when the two pieces are equal α Take 1.5; When the outside is thin and the inside is thick, it is not a big problem to take a thin sheet; When the outside is thick and the inside is thin, it is not easy to use.

d) When the service condition of laminated glass exceeds 70 ℃, α The adjustment coefficient is reduced from 0.8 to 0.6, which should be paid attention to when it is used in the south.

e) The adjustment coefficient of tempered glass and fireproof glass gives a range. How to take the value is best provided by the manufacturer, otherwise it is beneficial to take a small value, including the experimental determination during the combination of tempering and fireproof.

f) Tempered glass varies from place to place. It is best provided by glass manufacturers and should bear economic responsibility.

Analysis: ① ANSI is the parameter value provided by the glass factory and ensures the quality;

② Tempered glass has the problem of self explosion, which is about 8% 0 in foreign countries, which is greater than this value in foreign countries;

③ Tempered glass also has assembly problems and profile deformation problems. The glass flatness is 2% 0, so the lower limit is favorable.

g) For the calculation of fireproof glass, there are the following items, which are not within the scope of this time, but should be noted.

Such as glass disturbance, glass thermal stress, fire-proof glass gravity, glass gap, glass thermal performance, underwater glass, etc.

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