- 摘 要
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（武漢理工大學(xué)工程結(jié)構(gòu)與力學(xué)系，武漢 430070）
［摘要］鋼筋混凝土薄腹梁體外預(yù)應(yīng)力下?lián)问戒摾瓧U加固中，測量張拉高度v不易實現(xiàn)。利用張拉高度與鋼拉桿的幾何關(guān)系，將張拉高度轉(zhuǎn)換為鋼拉桿軸向應(yīng)變和薄腹梁跨中豎向位移，在加固施工時對應(yīng)變和位移雙重監(jiān)控，效果良好，對同類結(jié)構(gòu)加固有參考價值。
［關(guān)鍵詞］薄腹梁；預(yù)應(yīng)力加固；拉應(yīng)力；反拱；監(jiān)控
Monitoring the strengthened effect of thin web RC beams with external prestressing
Yi Xianren（Department of Engineering Mechanics, Wuhan University of Technology, Wuhan 430070,China）
Abstract:When the-reinforced concrete thin-web beams are strengthened by prestressed-steel bar, tensile heights are difficult to be measured. Based on the geometry relationships between tensile steel bar and tensile height, the stress of tensile steel bar and the vertical displacement of thin web beams on their mid-span can be derived from the tensile height. Thus the monitoring of stress and strain is achieved during strengthening construction, and the monitoring effects are very well, which provide better reference-for the same kind of structures.
Keywords:thin web beam; prestress strengthening; tensile stress; reverse deflection; monitoring
作者簡介：易賢仁，副教授，Email:yixr1952@sina.com。
參考文獻
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