酸、堿、氯鹽對(duì)玄武巖纖維布加固鋼筋混凝土梁抗彎性能的影響*
王海良,王博,楊新磊,葉圣平
- 摘 要
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（天津城建大學(xué)土木工程學(xué)院， 天津 300384）［摘要］分別通過(guò)對(duì)酸、堿、氯鹽溶液腐蝕60d后的玄武巖纖維布加固鋼筋混凝土梁進(jìn)行的靜力抗彎試驗(yàn)，研究了三種溶液對(duì)玄武巖纖維布加固既有損傷鋼筋混凝土梁抗彎性能的影響。結(jié)果表明：三種溶液均降低了試驗(yàn)梁承載能力，粘貼相同層數(shù)纖維布時(shí)，隨溶液濃度增加，試驗(yàn)梁承載能力有降低趨勢(shì)，且隨纖維布粘貼層數(shù)增加，此種降低趨勢(shì)越加明顯；三種溶液中氯鹽溶液影響最?。蝗N溶液對(duì)試驗(yàn)梁的破壞形態(tài)影響較小。［關(guān)鍵詞］玄武巖纖維布; 酸溶液; 堿溶液; 氯鹽溶液; 既有損傷梁; 加固中圖分類號(hào)：TU375.1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2015)09-0081-05Effects of acid, alkaline and chlorine salt on flexural behavior of reinforced concrete beams strengthened by basalt fiber clothWang Hailiang, Wang Bo, Yang Xinlei, Ye Shengping(School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China)Abstract: Through static bending tests of basalt fiber cloth strengthening reinforced concrete beams corroded by acid solution, alkaline solution and chlorine salt solution for 60d respectively, effects of three kinds of solutions on flexural behavior of damaged concrete beam strengthened by basalt fiber cloth were studied. The results show that all of three kinds of solution reduce the bearing capacities of test beams. When the same number of fiber cloth layer was pasted the bearing capacity of test beam has a decreasing tendency with the increase of solution concentration, and with the increase of fiber cloth layer, the above increasing trend is more obvious. The effect of chlorine salt solution in three solutions is the minimum. The effects of three solutions on failure pattern of test beam are minor.Keywords: basalt fiber cloth; acid solution; alkaline solution; chlorine salt solution; damaged beam; strengthening*天津市自然科學(xué)基金重點(diǎn)項(xiàng)目（12JCZDJC28900），天津市科技興海項(xiàng)目（KJXH2012-19）。作者簡(jiǎn)介：王海良，教授，碩士生導(dǎo)師，Email:wanghailiang6601@126.com。參考文獻(xiàn)［1］項(xiàng)海帆,吳定俊. 我國(guó)鐵路橋梁的現(xiàn)狀和展望［J］. 鐵道建筑技術(shù), 2001(2): 1-5.［2］吳剛,吳智深,胡顯. 玄武巖纖維在土木工程中的應(yīng)用研究現(xiàn)狀及進(jìn)展［C］//第五屆全國(guó)FRP學(xué)術(shù)交流會(huì)論文集. 2007: 422-427.［3］陳尚建,歐陽(yáng)普英,蘇先科,等. 玄武巖纖維增強(qiáng)復(fù)合材料(BFRP)力學(xué)性能的試驗(yàn)研究［J］. 建筑結(jié)構(gòu), 2007,37(IS):130-132.［4］ACI 440.2R-08 Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures［S］. Farmington Hills：ACI Committee Institute, 2000.［5］ACI 318-11 Building code requirements for structural concrete and commentary［S］. Farmington Hills：ACI Committee Institute, 2011.［6］GB 50367—2013混凝土結(jié)構(gòu)加固設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)建筑工業(yè)出版社，2013.［7］劉麗梅,張偉平,顧祥林,等. 碳纖維布與混凝土的粘結(jié)性能及其耐久性研究［J］. 建筑結(jié)構(gòu),2006,36(IS):756-759.［8］楊勇新,胡海濤,王希賓. 鹽霧侵蝕條件下玄武巖纖維布加固混凝土構(gòu)件的耐久性試驗(yàn)［J］. 工業(yè)建筑, 2010,40(4): 1-4.［9］楊勇新,陳偉,馬明山. 海水干濕交變環(huán)境下玄武巖纖維布耐久性能［J］. 工業(yè)建筑, 2010,40(4): 5-8.［10］郭旗,潘建伍,吳剛. 凍融循環(huán)及鹽溶液作用下玄武巖纖維布耐久性試驗(yàn)研究［J］. 工業(yè)建筑, 2010, 40(4): 17-21.［11］胡海濤,楊勇新,顧習(xí)峰. 紫外線對(duì)玄武巖纖維布加固鋼筋混凝土柱性能影響的試驗(yàn)研究［J］. 工業(yè)建筑, 2012, 42(2): 134-138.［12］SHI JIAWEI, ZHU HONG, WU ZHISHEN, et al. Bond behavior between basalt fiber\|reinforced polymer sheet and concrete substrate under the coupled effects of freeze-thaw cycling and sustained load［J］. Journal of Composites for Construction, 2012,17(4):530-542.［13］孫曉燕，董偉偉，王海龍，等. 侵蝕性環(huán)境下橋梁 CFRP/BFRP加固后的長(zhǎng)期性能試驗(yàn)［J］. 中國(guó)公路學(xué)報(bào), 2013, 26(2): 77-84.［14］胡海濤, 王希賓, 楊勇新. 玄武巖纖維片材在鹽霧侵蝕條件下的耐久性試驗(yàn)研究［J］. 工業(yè)建筑, 2010, 40(4): 9-12.［15］歐陽(yáng)煜, 王鵬, 李翔. 玄武巖纖維布加固鋼筋混凝土梁受彎試驗(yàn)研究［J］. 建筑結(jié)構(gòu), 2008, 38(11): 74-77.
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