Ⅹ形钢筋网高强砂浆加固砖墙的试验研究
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摘要
对砖墙应用Ⅹ形钢筋网结合喷射高强改性砂浆的加固技术进行研究,通过在低周往复荷载作用下对砖墙加固后的效果进行试验,分析墙体的滞回特性、破坏形态以及变形、耗能、抗剪能力等技术指标,探讨Ⅹ形钢筋网高强砂浆对砖墙加固抗震性能的影响。试验表明,采用Ⅹ形钢筋网高强砂浆加固后的墙体具有很高的极限抗剪承载力,可大大提高原墙体抵抗水平地震作用的能力,结构的变形、耗能能力均增加。
The article introduces a technology of applying X-shaped steel mesh combined with high-strength mortar in the reinforcement of brick walls.Then an experiment was conducted to test the effect after the reinforcement under low-cyclic loading.It analysed was the hysteretic characteristics,failure mode,energy dissipation and shear resistance of brick walls with this strengthening method.And the influence of using X-shaped steel mesh combined with high-strength mortar on the seismic behavior of the brick walls was also discussed.The tests show that using this strengthening method can make the walls own a high degree of ultimate shear strength,and greatly improve the walls' ability to resist earthquake forces.Structural deformation and capacity of energy dissipation can also be increased.
The article introduces a technology of applying X-shaped steel mesh combined with high-strength mortar in the reinforcement of brick walls.Then an experiment was conducted to test the effect after the reinforcement under low-cyclic loading.It analysed was the hysteretic characteristics,failure mode,energy dissipation and shear resistance of brick walls with this strengthening method.And the influence of using X-shaped steel mesh combined with high-strength mortar on the seismic behavior of the brick walls was also discussed.The tests show that using this strengthening method can make the walls own a high degree of ultimate shear strength,and greatly improve the walls' ability to resist earthquake forces.Structural deformation and capacity of energy dissipation can also be increased.
引文
[1]Dlenciner.Creepand Prestressed Losses in Brick Masonry[J].The Structural Engineer,1986,64B(3).
[2]Schwegler G.Masonry Construction Strengthened with Composites in Seismically Endangered Zone[C]∥10th European Conference on Earthquake Engineering Conference Proceedings.Wien:1994:2299-2303.
[3]Valluzzi M R,Tinazzi D,Modena C.Shear Behavior of Masonry Panels Strengthened by FRP Laminates[J].Construction and Building Materials,2002(16):409-416.
[4]翁大根,吕西林,任晓崧,等.砖砌体墙片抗震修复与加固伪静力试验[J].世界地震工程,2003,19(1):1-8.
[5]吴永正,翁兆华.砖结构房屋震害破坏情况分析[J].黑龙江水利科技,2009,37(2):54-54.
[6]宋彧,原国华.斜拉筋加固砌体结构抗震性能试验研究[D].兰州:兰州理工大学,2009.
[7]谈永奎.砖墙体加固抗震性能的试验比较[J].工业建筑,2001,31(7):65-67.
[8]信任,姚继涛.多层砌体结构墙体典型抗震加固技术和方法[J].西安建筑科技大学学报:自然科学版,2010,42(2):251-255.
[9]GB50011—2010建筑抗震设计规范[S].
[10]GB50003—2001砌体结构设计规范[S].
[2]Schwegler G.Masonry Construction Strengthened with Composites in Seismically Endangered Zone[C]∥10th European Conference on Earthquake Engineering Conference Proceedings.Wien:1994:2299-2303.
[3]Valluzzi M R,Tinazzi D,Modena C.Shear Behavior of Masonry Panels Strengthened by FRP Laminates[J].Construction and Building Materials,2002(16):409-416.
[4]翁大根,吕西林,任晓崧,等.砖砌体墙片抗震修复与加固伪静力试验[J].世界地震工程,2003,19(1):1-8.
[5]吴永正,翁兆华.砖结构房屋震害破坏情况分析[J].黑龙江水利科技,2009,37(2):54-54.
[6]宋彧,原国华.斜拉筋加固砌体结构抗震性能试验研究[D].兰州:兰州理工大学,2009.
[7]谈永奎.砖墙体加固抗震性能的试验比较[J].工业建筑,2001,31(7):65-67.
[8]信任,姚继涛.多层砌体结构墙体典型抗震加固技术和方法[J].西安建筑科技大学学报:自然科学版,2010,42(2):251-255.
[9]GB50011—2010建筑抗震设计规范[S].
[10]GB50003—2001砌体结构设计规范[S].
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