FRP布加固鋼筋混凝土短柱軸壓性能試驗研究_《混凝土與水泥制品》雜志社

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FRP布加固鋼筋混凝土短柱軸壓性能試驗研究

Experimental Study on Axial Compression Performance of Reinforced Concrete Short Columns Strengthened with FRP Sheets

2022年第1期

鋼筋混凝土短柱；大斷裂應變纖維布；芳綸纖維布；碳纖維布；加固；軸壓性能

Reinforced concrete short column; LRS-FRP sheet; AFRP sheet; CFRP sheet; Strengthening; Axial compression performance

2022年第1期

10.19761/j.1000-4637.2022.01.064.07

NSFC-山東聯合基金重點支持項目（U2106222）；國家自然科學基金項目（52108282）。

閆清峰1，張紀剛1，2，張宜聰1，張夢琳1，時成龍1

1．青島理工大學，山東青島 266033；2．山東省高等學校藍色經濟區工程建設與安全協同創新中心，山東青島 266033

閆清峰1，張紀剛1，2，張宜聰1，張夢琳1，時成龍1

閆清峰,張紀剛,張宜聰,等.FRP布加固鋼筋混凝土短柱軸壓性能試驗研究[J].混凝土與水泥制品,2022(1):64-70.

YAN Q F,ZHANG J G,ZHANG Y C,et al.Experimental Study on Axial Compression Performance of Reinforced Concrete Short Columns Strengthened with FRP Sheets[J].China Concrete and Cement Products,2022(1):64-70.

瀏覽量:

1000

英文名 : Experimental Study on Axial Compression Performance of Reinforced Concrete Short Columns Strengthened with FRP Sheets

刊期 : 2022年第1期

關鍵詞 : 鋼筋混凝土短柱；大斷裂應變纖維布；芳綸纖維布；碳纖維布；加固；軸壓性能

Key words : Reinforced concrete short column; LRS-FRP sheet; AFRP sheet; CFRP sheet; Strengthening; Axial compression performance

刊期 : 2022年第1期

DOI : 10.19761/j.1000-4637.2022.01.064.07

文章編號 :

基金項目 : NSFC-山東聯合基金重點支持項目（U2106222）；國家自然科學基金項目（52108282）。

作者 : 閆清峰1，張紀剛1，2，張宜聰1，張夢琳1，時成龍1

單位 : 1．青島理工大學，山東青島 266033；2．山東省高等學校藍色經濟區工程建設與安全協同創新中心，山東青島 266033

閆清峰1，張紀剛1，2，張宜聰1，張夢琳1，時成龍1

閆清峰,張紀剛,張宜聰,等.FRP布加固鋼筋混凝土短柱軸壓性能試驗研究[J].混凝土與水泥制品,2022(1):64-70.

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摘要

參數

結論

參考文獻

引用本文

摘要：為了研究大斷裂應變纖維布（LRS-FRP布）、芳綸纖維布（AFRP布）和碳纖維布（CFRP布）加固鋼筋混凝土短柱的軸壓性能，共設計了9根鋼筋混凝土短柱試件，研究了FRP布種類以及粘貼方式、層數、角度對軸壓性能的影響，對比分析了加固后試件的破壞特征、極限承載力和延性，并利用ABAQUS軟件進行了有限元分析。結果表明：CFRP布對極限承載力的提高效果最顯著，但試件加固后仍表現出明顯的脆性破壞；LRS-FRP布和AFRP布對極限承載力的提高效果與CFRP布相差不大，但二者對延性改善明顯，且LRS-FRP布的約束效果更優；FRP布粘貼方式和角度對軸壓性能的影響小，在滿足承載力的前提下，以90°間隔粘貼FRP布更加合理；有限元模擬結果與試驗結果吻合較好。

Abstract: In order to study the axial compression performance of reinforced concrete short columns strengthened with large rupture strain fiber reinforced polymer(LRS-FRP), aramid fiber reinforced polymer(AFRP) and carbon fiber reinforced polymer(CFRP) sheets, nine reinforced concrete short columns were designed, and the effects of FRP sheet type, bonding type, number of layers and angle on the axial compressive performance were studied. The failure mode, ultimate bearing capacity and ductility of strengthened columns were compared and analyzed. The finite element analysis was carried out by using ABAQUS software. The results show that the ultimate bearing capacity of CFRP sheets strengthened column is significantly improved, but the column still shows brittle behavior after strengthening. The improvement on ultimate bearing capacity of LRS-FRP and AFRP sheets is similar to that of CFRP sheets, and LRS-FRP and AFRP sheets can improve the ductility obviously and the restraint effect of the former is better. Bonding type and angle have little influence on axial compression performance, and under the premise of meeting the bearing capacity, it is more reasonable to bonding FRP sheets at 90° intervals. The finite element simulation results are in good agreement with the experimental results.

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FRP布加固鋼筋混凝土短柱軸壓性能試驗研究

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