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李賢，沙士鈺，呂恒林，周淑春

（中國(guó)礦業(yè)大學(xué)土木工程環(huán)境災(zāi)變與結(jié)構(gòu)可靠性江蘇省重點(diǎn)試驗(yàn)室， 徐州 221116）

［摘要］建議了FRP(纖維增強(qiáng)塑料)布環(huán)向約束鋼筋混凝土偏心受壓柱的簡(jiǎn)化軸力彎矩相關(guān)曲線（NuMu曲線）的建立方法，參照《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》（GB 50010—2010）的正截面承載力計(jì)算基本假定，得到了簡(jiǎn)化NuMu曲線的關(guān)鍵控制點(diǎn)，并通過(guò)相關(guān)試驗(yàn)結(jié)果驗(yàn)證了采用簡(jiǎn)化NuMu曲線驗(yàn)算FRP布環(huán)向約束鋼筋混凝土偏心受壓柱承載力的合理性，并給出了利用簡(jiǎn)化NuMu曲線進(jìn)行FRP布環(huán)向約束加固鋼筋混凝土偏心受壓柱的設(shè)計(jì)流程以及設(shè)計(jì)建議。研究結(jié)果表明，通過(guò)該簡(jiǎn)化曲線可以較好地計(jì)算FRP布環(huán)向約束鋼筋混凝土偏心受壓柱的承載力，且計(jì)算過(guò)程簡(jiǎn)單，能夠滿足工程結(jié)構(gòu)加固設(shè)計(jì)要求，為我國(guó)相關(guān)規(guī)范的修訂提供有益參考。

［關(guān)鍵詞］鋼筋混凝土柱； 纖維增強(qiáng)塑料； 承載力； 偏心荷載； 加固設(shè)計(jì)

中圖分類號(hào)：TU3181文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002848X(2013)12004705

Study on simplified NuMu interaction curve for FRP jacketed rectangular

reinforced concrete columns under eccentric loading

Li Xian, Sha Shiyu, Lü Henglin, Zhou Shuchun

（Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Civil Engineering,

China University of Mining and Technology, Xuzhou 221116, China)

Abstract:The purpose of this study is to propose a new method for the construction of a simplified axial force\|bending moment interaction curve（NuMu interaction curve） for

fiber reinforced polymer(FRP) jacketed reinforced concrete columns under eccentric loading. Based on the assumptions recommended by Code for design of concrete structures (GB 50010—2010) for calculating flexural strength of conventional reinforced concrete members, the key points to determine the simplified curve were obtained and then the accuracy of the proposed curve was verified by examining correlations with the experimental results found in literatures. The calculation procedure and some recommendations for structural strengthening were also suggested. Analytical results indicate that the proposed curve can accurately and effectively predict the loading capacity of FRP jacketed reinforced concrete columns, and thus it can be applied in engineering practice and revision of future codes in related field.

Keywords:reinforced concrete column; fiber reinforced polymer (FRP); loading capacity; eccentric loading; strengthening design

*國(guó)家自然科學(xué)基金（51008300），江蘇省自然科學(xué)基金（BK2010185）。

作者簡(jiǎn)介：李賢，副教授，碩士生導(dǎo)師，Email：leexian@yeah.net。

參考文獻(xiàn)

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