發生高樓火災時，帷幕牆系統防止火焰垂直延燒的性能對於減少生命財產損失有很大的影響。在裝有帷幕牆系統的建築中，火焰垂直延燒的路徑主要有兩種，沿著外牆向上延燒，以及穿過外牆與樓板間的層間縫隙延燒至上層樓層。因此要評定帷幕牆系統的防火能力，需要分別探討帷幕牆本體以及安裝於層間縫隙的層間塞個別的防火性能。由於目前台灣還未有專門測試室帷幕牆系統以及層間塞的防火試驗相關法規，因此本研究結合國外ASTM E2307-15b以及NFPA 285兩種標準測試法規，對帷幕牆系統的防火性能進行全尺度的測試。本研究的實驗主要有校正試驗以及試體試驗兩部分。校正試驗的目的為找到試驗時燃燒器合適的流率以及其他設定。其中，原法規所給定的參考流率是以天然氣作為燃料，而本研究使用液化石油氣當作燃燒器的燃料，因此試驗中燃燒器的流量需做適當的調整才能滿足法規所要求的溫度條件。歷經九次校正試驗後，本研究同時改變了燃燒器的流量以及溫度，找到最適合的試驗設定。接著本研究進行了兩次的試體試驗，測試兩種不同設計的帷幕牆試體，並評定個別帷幕牆系統設計中兩種元件的防火性能。其中根據ASTM E2307-15b，兩種試體的層間塞皆在試驗開始後的一個小時內失效；而根據NFPA 285，兩種試體中的帷幕牆本體則滿足法規的防火性能要求。然而，試驗發現由於兩種玻璃帷幕牆本體的表面皆不含有可燃材質，因此本研究所使用的試驗方法可能並不適合做為評定該種帷幕牆設計的防火性能標準。最後在實驗進行的過程中，本研究也發帷幕牆系統中兩種元件的防火性能表現會互相影響。當整合為單一系統同時做防火測試時，其中一個元件的不良設計，可能會導致另一元件防火性能失效。

The fire resistance performance of curtain wall systems had a crucial role in preventing loss in property and human life, especially in high rise fires. When a fire incident occurs, the curtain wall system should have the ability to stop fire from spreading vertically. For buildings with curtain wall systems, fire would spread to the room above in two ways: propagating on the exterior surface of the wall, and penetrating through the joint between the vertical wall and the floor slab. Currently there are no standard fire test methods in Taiwan to test these specific details of the domestic curtain wall systems. In this study, a full-scale fire test method combining ASTM E2307-15b and NFPA 285 was used to test the fire resistance of a curtain wall system. First, calibration tests were conducted to find the appropriate settings for the burners with liquefied petroleum gas as the fuel source. Since in the referenced test standard, natural gas was used as the fuel source, the referenced gas flow rate given in the reference needed to be adjusted when conducting the experiments. After nine calibration tests, both the burner’s gas flow rates and position were adjusted to obtain the appropriate the test conditions specified in the test standard. Then, two curtain wall systems were tested in the specimen tests. The performance of each’s two components, the wall assembly and the perimeter joint protection, were evaluated. In both specimen tests, failure criteria were met by the perimeter joint protection in less than an hour, according to ASTM E2307-15b. On the other hand, the wall assembly passed the fire test according to the conditions specified by NFPA 285. However, the test method disclosed in this study may not be suitable to test the fire resistance performance of a glass curtain wall specimen with no combustible components on its surface. Nevertheless, it was further discovered that one component’s performance can be effected by another’s design. When integrated and being tested together as a system, one component’s poor design may contribute to another component’s failure.

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