- 摘 要
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（湖南工業(yè)大學(xué)土木工程學(xué)院和科技學(xué)院， 株洲 412007）
［摘要］基于采用高性能水泥復(fù)合砂漿鋼筋網(wǎng)薄層（HPFL）加固的6根足尺軸心受壓RC柱力學(xué)性能試驗(yàn)研究結(jié)果，進(jìn)行有限元數(shù)值模擬分析，研究加固層中鋼筋的類型、直徑和網(wǎng)格尺寸幾個變化參數(shù)對柱加固效果的影響。模擬分析中對單元的選取、材料本構(gòu)關(guān)系、數(shù)值模擬相關(guān)參數(shù)的設(shè)置、構(gòu)件有限元模型的建立等進(jìn)行了研究，并對數(shù)值模擬結(jié)果與試驗(yàn)結(jié)果進(jìn)行了比較和分析，二者符合程度較高。利用所建模型對一工程實(shí)例進(jìn)行了模擬，模擬結(jié)果與采用相應(yīng)規(guī)程理論公式計算的結(jié)果有很好的一致性，驗(yàn)證了所建立的有限元模型的正確性和合理性。試驗(yàn)研究和數(shù)值模擬結(jié)果均表明，加固后的柱子承載力和剛度得到了相應(yīng)提高、延性得到了相應(yīng)改善，進(jìn)一步證實(shí)HPFL加固法是一種加固效果顯著、加固后構(gòu)件工作性能優(yōu)良、施工方便、投資節(jié)約的加固方法。
［關(guān)鍵詞］HPFL; 加固; 軸心受壓柱; 有限元模擬; 承載力; 剛度
中圖分類號：TU375.3 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)17-0050-06
Numerical simulation analysis of the axially compressed RC column strengthened with HPFL
Jiang Longmin, He Aibo, Zhou Lumeng
(School of Civil Engineering and School of Technology, Hunan University of Technology, Zhuzhou 412007, China)
Abstract:Based on experimental research results of mechanical properties of six full-scale axially compressed reinforced concrete columns strengthened with high performance ferrocement laminate（HPFL）, finite element numerical simulation analyses were carried out to study influence of variable parameters of rebar type, rebar diameter and grid size in the strengthened layer on strengthening effect of the column. The simulation analyses researched the selection of units, the material constitutive relation, the relevant parameter setting of numerical simulation and establishment of component finite element model. The numerical simulation analysis results and experimental results agree with each other well based on the comparison and analysis. A project example was simulated using the built model and the simulating results are in good accordance with calculated results based on theoretical formula of relevant codes, which verifies correctness and rationality of the established finite element model. The experimental study and numerical simulation analyses show that the bearing capacity and stiffness of strengthened column are developed as well as the ductility. It is further proved that the strengthening method of HPFL has notable strengthening effect, construction convenience and less cost. Moreover, the working behavior of the strengthened column is excellent.
Keywords:high performance ferrocement laminate; strengthening; axially compressed column; finite element simulation; bearing capacity; stiffness
*國家自然科學(xué)基金項目(51058001), 湖南省大學(xué)生研究性學(xué)習(xí)和創(chuàng)新性實(shí)驗(yàn)計劃（湘教通［2013］191號）。
作者簡介：蔣隆敏,博士,教授,Email:527943658@qq.com。
參考文獻(xiàn)
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