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    劉  斌¹，黃坤耀²
    (1 現(xiàn)代設(shè)計(jì)集團(tuán)上海民港國際建筑設(shè)計(jì)有限公司，上海200011；2 上海維固工程實(shí)業(yè)有限公司，上海200235)

[摘要] 本文結(jié)合實(shí)際改建工程，對(duì)舊房中的預(yù)應(yīng)力空心板樓面進(jìn)行加固處理，使其在荷載增加、板肋被開洞打斷等情況下仍能滿足承載力等要求。因預(yù)制板的加固無規(guī)范依據(jù)，工程中通過現(xiàn)場(chǎng)載荷試驗(yàn)，進(jìn)行了預(yù)應(yīng)力空心板加固前后的結(jié)構(gòu)性能檢測(cè)，試驗(yàn)證明加固后的預(yù)制板能夠滿足使用要求。
[關(guān)鍵詞] 預(yù)制板；預(yù)應(yīng)力空心板；碳纖維加固

Strengtherung on Prefabricated Floorslab in a Rebuilding Project
Liu Bin¹, Huang Kunyao²
(1 Xian Dai Architectural Design Group, Shanghai MingKong Intemational Design Co., Ltd., Shanghai  200011, China; 2 Shanghai WeiGu Engineering Technology Co., Ltd., Shanghai  200235, China)

Abstract: This paper presents the strengthening method in a real rebuilding project. The precast prestressed hollow floorslab in the old building need to be strengthened to satisfy the demand of weight bearing because the load is increased or the rib of the hollow slab is broken by circle punching. Because there is no code description particularly on the strengthening on a precast prestressed hollow slab, a on-the-spot load test was held to inspect the performance of it before and after the strengthening. The test proves that the strengthening works and the slab after strengthening can meet the demand of use.
Keywords: precast slab; prestressed hollow slab; CFRP strengthening