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EXPERIMENTAL STUDY OF SHEAR BEHAVIOR OF RC BEAMS STRENGTHENED WITH STAINLESS STEEL WIRE MESH AND POLYMER MORTAR UNDER SECONDARY LOAD
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摘要: 高强不锈钢绞线网-渗透性聚合物砂浆加固技术是近年来兴起的新型加固工艺,具有耐火、耐腐蚀、耐老化等优点。针对该加固工艺,对4根钢筋混凝土矩形梁和1根对比梁进行了剪切破坏对比试验,并分析加固梁抗剪破坏机理,探讨加固方式、二次受力、持载程度等对抗剪加固性能的影响,以获得有指导意义的结论。Abstract: Rehabilitation of RC members with stainless steel wire mesh and permeability polymer mortar is a new method of structural strengthening with the advantages of resistance to fire, corrosion and aging. Experiments are conducted to investigate the shear behavior of four strengthened RC rectangular beams and one comparative RC beam. The shear mechanism of strengthened beams is analyzed, and the influences of the strengthening manners, secondary load, and the degree of loading on the shear behavior of strengthened beams are discussed. And the correlative conclusions are gained.
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Key words:
- stainless steel wire mesh /
- polymer mortar /
- shear strengthening /
- secondary load /
- experimental study
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[2] .金成勋, 金成秀. 渗透性聚合砂浆的评估[R]. 房敬律, 译. 北京: 清华大学土木系, 2000. .金成勋. 不锈钢绞线抗拉强度试验结果[R]. 房敬律, 译. 北京: 清华大学土木系, 2000. [3] .清华大学建筑材料试验室. 渗透性聚合物砂浆的试验报告[R]. 北京: 清华大学土木系, 2000. [4] .王寒冰. 高强不锈钢绞线网- 聚合砂浆加固RC 梁的试验研究[D]. 北京: 清华大学, 2003. [5] .蔡奇. 高强不锈钢绞线加固钢筋混凝土梁刚度裂缝的研究[D]. 北京: 清华大学, 2003. [6] .聂建国, 蔡奇, 张天申, 等. 高强不锈钢绞线网- 渗透性聚合砂浆抗剪加固的试验研究[J]. 建筑结构学报, 2005, 26(2): 10-17. [7] .Deniaud Christophe, Cheng J J, Roger. Shear Behavior of Reinforced Concrete T-beams with Externally Bonded Fiber-Reinforced Polymer Sheets[J]. ACI Structural Journal, 2001, 98(3): 386-394. -
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