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（浙江綠城建筑設(shè)計(jì)有限公司， 杭州 310007）

［摘要］疊合加固技術(shù)重點(diǎn)是疊合面的粘結(jié)性能，決定了后澆混凝土與既有結(jié)構(gòu)能否很好地共同工作。結(jié)合實(shí)際工程，從混凝土材料微觀結(jié)構(gòu)和宏觀力學(xué)性能出發(fā)，分析了疊合結(jié)構(gòu)疊合面粘結(jié)性能的主要影響因素，探討了一種既有大跨結(jié)構(gòu)梁頂部疊合加固思路，對(duì)工程實(shí)際應(yīng)用具有指導(dǎo)作用。

［關(guān)鍵詞］疊合加固技術(shù)； 既有大跨結(jié)構(gòu)； 疊合面抗剪； 粘結(jié)性能； 界面處理

中圖分類(lèi)號(hào)：TU973-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)09-0028-05

Application of composite strengthening technology in the renovation of existing large span structures

Wu Yingdong, Fang Xunke, Hu Di, Wu Xuefeng, Zhu Wei

(Zhejiang Greenton Architectural Design Co., Ltd., Hangzhou 310007, China)

Abstract:The adhesive property of the combined interface is always the key in the composite strengthening technology, it determines whether the post cast concrete and the existing structure can work well together. Combined with practical engineering, started from the micro structure and macro mechanical properties of concrete materials, the main factors affecting the adhesive property of the combined interface in the composite structure were analyzed. An idea of composite strengthening on the top of existing large span structure was discussed, and it will be of guiding value in practical engineering.

Keywords:composite strengthening technology； existing large span structure； anti-shear in the combined interface； adhesive property； interface treatment

作者簡(jiǎn)介：吳映棟，碩士，結(jié)構(gòu)設(shè)計(jì)總監(jiān)，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:wuyingdong@gad.com.cn。