预制混凝土夹心保温外墙板窗口及水平接缝防火性能实体试验研究

Experimental Study on the Fire Performance of Precast Concrete Sandwich Insulation External Wall Panel Windows and Horizontal Joints

摘要: 装配式剪力墙住宅建筑通常采用预制混凝土夹心保温外墙板，其构造不同于传统的外保温外墙系统，目前还缺乏针对这种夹心保温外墙板防火性能的实体试验研究。为检验夹心保温外墙板窗口防火构造做法以及墙板水平接缝的可靠性，以某装配式建筑实验楼为对象，开展了实体火灾试验，结果表明预制混凝土夹心保温外墙板组成的装配式建筑外墙系统可有效避免火灾发生时，火焰通过保温材料蔓延情况。研究结果可为装配式建筑夹心保温系统的防火能力评价及其防火构造优化提供依据。

Abstract: Prefabricated shear wall residential buildings usually use prefabricated concrete sandwich insulation exterior wall panels, which have a different structure from traditional external insulation exterior wall systems. Currently, there is a lack of physical experimental research on the fire resistance performance of such sandwich insulation exterior wall panels. In order to test the reliability of the window fireproof structure of sandwich thermal insulation exterior wall panels and the horizontal joints of wallboards, a physical fire test was carried out on a prefabricated building. The results show that the exterior wall system of prefabricated building composed of prefabricated concrete sandwich thermal insulation exterior wall panels can effectively avoid the spread of heat insulation materials when a fire occurs. The research results can provide a basis for the evaluation of the fire prevention capability of sandwich insulation systems in prefabricated building and the optimization of their fire prevention structures.