- 摘 要
-
(1 新疆大學(xué)建筑工程學(xué)院， 烏魯木齊 830047； 2 同濟(jì)大學(xué)土木工程學(xué)院， 上海 200092；3 新疆建筑結(jié)構(gòu)與抗震重點(diǎn)實(shí)驗(yàn)室， 烏魯木齊 830047)
［摘要］開展了一種新型預(yù)制混凝土無機(jī)保溫夾心墻體抗火試驗(yàn)研究，該墻體由內(nèi)、外葉鋼筋混凝土墻，無機(jī)保溫砂漿夾心層及FRP連接件組成。試驗(yàn)按照ISO 834升溫曲線受火60min（爐膛最高溫度為945℃），重點(diǎn)對預(yù)制混凝土無機(jī)保溫夾心墻體在火災(zāi)下的破壞形態(tài)、溫度場分布、耐火隔熱性等進(jìn)行研究。研究表明：在受火60min情況下，外葉墻（即下葉墻）中FRP連接件的最高溫度為443.5℃，迎火面最高溫度649℃，背火面最高溫度22.2℃；預(yù)制混凝土無機(jī)保溫夾心墻體滿足《建筑構(gòu)件耐火試驗(yàn)方法》(GB/T 9978.1—2008)規(guī)定的墻體承載力、完整性和耐火隔熱性要求，同時(shí)也達(dá)到《建筑設(shè)計(jì)防火規(guī)范》(GB 50016—2014)(2018年版)中規(guī)定的非承重外墻耐火極限60min要求。
［關(guān)鍵詞］火災(zāi)試驗(yàn)；預(yù)制混凝土無機(jī)保溫夾心墻；FRP連接件；耐火極限
中圖分類號：TU375 文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2021)21-0081-03
Experimental study on fire resistance performance of two-side simply-supported precast concrete sandwich wall with inorganic thermal insulation
LI Zhijie1,2,3
(1 School of Architectural Engineering, Xinjiang University, Urumqi 830047， China； 2 College of Civil Engineering，Tongji University, Shanghai 200092， China； 3 Key Lab of Building Structure and Earthquake Resistance of Xinjiang, Urumqi 830047， China)
Abstract: The fire resistance test was carried out on a new type of precast concrete sandwich wall with inorganic thermal insulation. The wall is composed of internal and external reinforced concrete walls, a sandwich layer of inorganic thermal insulation mortar and FRP connectors. The test was conducted in accordance with ISO 834 heating curve for 60 minutes (maximum temperature of the furnace is 945℃), and the damage morphology, temperature field distribution, fire resistance and heat insulation of the precast concrete sandwich wall with inorganic thermal insulation under fire were studied. Studies show that under fire for 60min, the maximum temperature of the FRP connector in the external wall (i.e. the lower wall) is 443.5℃, the highest temperature of the fire-facing surface is 649℃, and the highest temperature of the fire-back surface is 22.2℃; precast concrete sandwich wall with inorganic thermal insulation meets the requirements of the wall bearing capacity, integrity and fire resistance and heat insulation specified in the Fire-resistance tests Elements of building construction (GB/T 9978.1—2008), and also meets the stipulation of Code for fire protection design of buildings (GB 50016—2014) (2018 edition) for the non-load-bearing external wall fire resistance limit of 60min.
Keywords:fire test； precast concrete sandwich wall with inorganic thermal insulation； FRP connector； fire resistance limit
*自治區(qū)自然科學(xué)基金聯(lián)合基金項(xiàng)目(2017D01C045)。
作者簡介：李志杰，博士，講師，Email:lizhijie1@126.com。
- 下載地址
-
