The fire-proof glass curtain wall system with the requirements of fire resistance, heat insulation and fire integrity of composite fire-proof glass is generally divided into class A, class B and class C. its fire resistance, heat insulation and fire integrity are not less than 1.50h, 1.00h and 0.50h respectively. The support mode of full open frame glass curtain wall shall be adopted, and its steel column shall be suspended and pulled. Composite fireproof glass shall be adopted.

Composite fireproof glass is composed of float glass (or semi tempered glass, tempered glass) and fireproof glue interlayer. In case of fire, because the glass on the fire surface will burst soon after encountering high temperature, the fireproof rubber interlayer will slowly foam and swell, and the maximum foam expansion can be about ten times. The composite fireproof glass is fixed in the notch of the supporting structure of the open frame of the steel structure. Although the fireproof glue interlayer of the glass expands when heated, the glass on the fire surface will burst soon after encountering high temperature. Therefore, the fireproof glass fireproof glue interlayer in the notch of the open frame will swell in the unconstrained direction of the broken panel, Although the fireproof glass and fireproof glue interlayer in the notch will also swell slightly in the inlet and outlet direction, under the action of fire and high temperature, the steel structure will be high temperature and the stiffness of the notch of the steel structure will become weak, which is conducive to adapt to the micro swelling demand of the composite fireproof glass, so as to meet the requirements of fire resistance integrity. The fireproof rubber interlayer foams and swells, absorbs the high heat brought by flame combustion, forms an opaque fireproof rubber plate, and effectively blocks heat conduction. After the fire burns for a certain time, the fire-proof glue will be expanded by heating and eventually fall off, which will lead to the breakage of the next piece of glass and the expansion of the next piece of fire-proof glue by heating and foaming, effectively blocking heat conduction.

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