- 摘 要
-
(上海市建筑科學(xué)研究院有限公司, 上海市工程結(jié)構(gòu)安全重點實驗室, 上海 200032)
摘要: 制作了 3 片預(yù)設(shè)缺陷的外墻外保溫系統(tǒng)模型試件,包括 2 片不同厚度的 EPS 板薄抹灰外保溫系統(tǒng)試件和 1片無機保溫砂漿外保溫系統(tǒng)試件. 為研究不同季節(jié)室外溫度對紅外熱像檢測結(jié)果的影響,分別在春季和夏季對 3個試件進行了紅外熱像定時拍攝. 檢測結(jié)果表明,保溫材料的種類和厚度會影響缺陷區(qū)域與完好區(qū)域表面溫度差隨室外溫度變化的規(guī)律;檢測當(dāng)天的環(huán)境溫度波動越大,外保溫系統(tǒng)表面溫度差越大;對于保溫材料厚度較薄的外墻外保溫系統(tǒng),紅外熱像技術(shù)可識別出保溫層與基層間的缺陷,但無法根據(jù)紅外熱像獲得的溫度差確定缺陷的類型、保溫材料缺失程度等詳細(xì)情況;紅外熱像技術(shù)可識別出外保溫系統(tǒng)中的錨栓分布情況,因此可用于外墻外保溫系統(tǒng)構(gòu)造措施檢測. 由于紅外熱像技術(shù)不能準(zhǔn)確識別所有缺陷,工程現(xiàn)場檢測時為保證檢測結(jié)果的可靠性和準(zhǔn)確性,仍應(yīng)輔以其他檢測手段.
關(guān)鍵詞: 外墻; 外保溫系統(tǒng); EPS 板薄抹灰; 無機保溫砂漿; 缺陷檢測; 紅外熱像
中圖分類號:TU761. 12 文獻標(biāo)志碼:A 文章編號:1002-848X(2023)10-0105-08
DOI:10. 19701 / j. jzjg. LS202046
Research on the application of infrared thermal imaging technology in the safety inspection of external wall thermal insulation system
CHEN Xi, WANG Zhuolin, XU Qingfeng, ZHANG Dongbo, CHEN Lingzhu
(Shanghai Key Laboratory of Engineering Structure Safety, SRIBS, Shanghai 200032, China)
Abstract: Three pieces of pre-defect external wall thermal insulation system specimens were produced, including twopieces of EPS board with thin plastering system specimens with different thickness of EPS board and one piece of inorganicinsulation mortar system specimen. To study the influence of outdoor temperature in different seasons on infrared thermalimaging detection results, infrared thermal imaging time-lapse photography was performed on the three specimens in springand summer. The detection results showed that the law of surface temperature difference between the defect area and theintact area with outdoor temperature would be affected by the type and the thickness of the insulation material. The greaterthe environmental temperature fluctuation on the test day, the greater the surface temperature difference of the external wallthermal insulation system. For the external wall thermal insulation system with thin insulation material, infrared thermalimaging technology can identify defects between the insulation layer and the base layer. The specific conditions of thedefects such as the type of defect and the degree of lack of insulation materials cannot be determined based on thetemperature difference obtained from infrared thermal imaging technology. Infrared thermal imaging technology can identifythe distribution of anchor bolts in the external wall thermal insulation system, so it can be used to detect the structuralmeasures of the external wall thermal insulation system. Because infrared thermal imaging technology can not accuratelyidentify all defects, to ensure the reliability and the accuracy of detection results, other detection methods should also beconducted.
Keywords:external wall; external wall thermal insulation system; EPS board with thin plastering system; inorganicinsulation mortar; defect inspection; infrared thermal imaging technology
∗上海市優(yōu)秀技術(shù)帶頭人項目(21XD1434100),住房和城鄉(xiāng)建設(shè)部研究開發(fā)項目(2022-K-051),上海市住房和城鄉(xiāng)建設(shè)管理委員會科研項目(滬建科 2021-002-040).
第一作者:陳溪,博士,教授級高級工程師,主要從事既有建筑檢測評估和加固改造、木竹結(jié)構(gòu)等領(lǐng)域的研發(fā)和工程實踐,Email: cx541026@ hotmail. com.
[引用本文] 陳溪,王卓琳,許清風(fēng),等. 紅外熱像技術(shù)在外墻外保溫系統(tǒng)安全性檢測中的應(yīng)用研究[ J]. 建筑結(jié)構(gòu),2023,53(10):105-112. CHEN Xi,WANG Zhuolin,XU Qingfeng,et al. Research on the application of infrared thermalimaging technology in the safety inspection of external wall thermal insulation system[ J]. Building Structure,2023,53(10):105-112.
