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（1山東省建筑科學(xué)研究院， 濟南 250031； 2 北京智博聯(lián)科技股份有限公司， 北京 100088）
［摘要］采用灌漿傳感器和超聲層析成像（簡稱超聲CT）兩種技術(shù)對裝配式混凝土結(jié)構(gòu)鋼筋連接套筒灌漿飽滿度檢測進(jìn)行了試驗研究?？紤]接縫坐漿和整體灌漿兩種施工方案，共設(shè)計了3組試驗構(gòu)件。其中接縫坐漿考慮套筒完全灌滿、套筒部分漏漿及套筒全部漏漿三種工況，接縫整體灌漿考慮完全灌滿、部分漏漿及補充灌漿三種工況。分別采用灌漿傳感器、超聲CT對3組試驗構(gòu)件不同灌漿工況下鋼筋連接套筒的灌漿飽滿度進(jìn)行了檢測。通過對比灌漿前后的測試結(jié)果，得出傳感器反饋的振動信號幅值變化情況能夠真實反映試驗構(gòu)件套筒的灌漿飽滿程度；超聲CT僅對于遠(yuǎn)離測試面套筒的灌漿飽滿度檢測效果明顯，而對于靠近測試面的套筒，其灌漿前后對比效果并不顯著。
［關(guān)鍵詞］裝配式混凝土結(jié)構(gòu)； 套筒灌漿檢測； 灌漿傳感器； 超聲CT
中圖分類號：TU398-2文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)02-0040-08
Experimental study on grouting fullness detection test of sleeves of prefabricated concrete structures
Cui Shiqi1, Liu Wenzheng1, Shi Lei1, Liu Chuanqing1, Zhang Quanxu2
（1 Shandong Provincial Academy of Building Research, Jinan 250031, China;2 Beijing ZBL Science & Technology Co., Ltd., Beijing 100088, China）
Abstract:Experiments on grouting tests of rebar connecting sleeves for prefabricated concrete structures were carried out by grouting sensors and ultrasonic tomography (ultrasonic CT) technologies. Three testing models were designed considering two different construction schemes of bed-mortar joint grouting and global grouting. Bed-mortar joint grouting included three working conditions of full grouted sleeve, partial leakage of sleeve and total leakage of sleeve respectively. Global grouting included three working conditions of full-grouted, partial leakage and supplementary grouting. Detection tests of rebar connecting sleeves for three models under the above different grouting conditions were operated by means of grouting sensors and ultrasonic CT. By comparing the testing results before and after grouting, it was concluded that the variation of vibration amplitude of grouting sensors could exactly reflect the grouting degree of the sleeves embedded in the models. Furthermore, ultrasonic CT could merely detect the grouting degree of the sleeves away from the testing surface, nevertheless, for the sleeves close to the testing surface, the detection effect of ultrasonic CT is not ideal.
Keywords:prefabricated concrete structure; grouting test of sleeve; grouting sensor; ultrasonic CT
*房屋建設(shè)裝配式鋼筋混凝土結(jié)構(gòu)體系研究（魯財建指(2014)139號）。
作者簡介：崔士起，研究員，博士生導(dǎo)師，Email：jiegoufenyuan@163.com。
