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(1 江蘇省建筑科學研究院有限公司, 南京 210008； 2 江蘇省建筑工程質量檢測中心有限公司, 南京 210028)
［摘要］灌漿套筒的施工質量是保證裝配式混凝土結構質量安全的關鍵點之一。對套筒施工質量的主要問題進行了分析，闡述了X射線數字成像技術的檢測原理。設計制作了一個鋼筋混凝土剪力墻試件，試件內埋了3個全灌漿套筒和3個半灌漿套筒，并人工設置了灌漿的飽滿度，分別為全滿、半空和全空，采用X射線數字成像技術無損現場檢測剪力墻試件內灌漿套筒施工質量；通過增加兩片厚度為70mm的鋼筋混凝土墻板，分析了鋼筋混凝土厚度對于檢測結果的影響。通過對比試驗驗證了X射線數字成像技術的準確性?；谠囼灲Y果，采用X射線數字成像技術對實際工程中的200mm厚鋼筋混凝土內部的灌漿套筒進行檢測，結果證明此技術為更好地控制裝配式混凝土結構施工質量提供了一種便捷有效的途徑。
［關鍵詞］裝配式混凝土結構； X射線數字成像技術； 灌漿套筒； 施工質量； 無損檢測
中圖分類號：TU375文獻標識碼：A文章編號：1002-848X(2020)09-0011-05
Experimental study on construction quality of grouting sleeve detected by X-ray digital radiography technology
XU Guodong1,2, XIANG Qiudi1,2, ZHAO Guangzhi1,2, SUN Zhenghua1,2
(1 Jiangsu Research Institute of Building Science Co., Ltd., Nanjing 210008, China; 2 Jiangsu Testing Center for Quality of Construction Engineering Co., Ltd., Nanjing 210028, China)
Abstract:The construction quality of the grouting sleeve is one of the key points to ensure the quality and safety of prefabricated concrete structures. The main problems of sleeve construction quality were analyzed, and the detection principle of X-ray digital radiography technology was explained. A test piece of reinforced concrete shear wall was designed and manufactured. Three full-grouting sleeves and three half-grouting sleeves were embedded in the test piece, and the fullness of grouting was set manually, including three levels of full, half-empty, and full-empty. X-ray digital radiography technology was used to non-destructively detect the construction quality of grouting sleeves in shear wall specimens. By adding two pieces of reinforced concrete wall plates with a thickness of 70mm, the influence of reinforced concrete thickness on the test results was analyzed. The accuracy of X-ray digital radiography technology was verified through comparative experiments. Based on the test results, X-ray digital radiography technology was used to test the grouting sleeve inside the 200mm thick reinforced concrete in actual engineering. The results prove that X-ray digital radiography technology provides a convenient and effective way to better control the construction quality of prefabricated concrete structures.
Keywords:prefabricated concrete structure; X-ray digital radiography technology; grouting sleeve; construction quality; non\|destructive testing
*國家重點研發(fā)計劃項目（2016YFC0701800），江蘇省建設系統(tǒng)科技項目（2019）。
作者簡介：許國東，博士，高級工程師，Email：26377375@qq.com。
