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EXPERIMENT ON FLEXURAL CAPACITY OF RC BEAMS STRENGTHENED WITH STAINLESS STEEL WIRE MESH AND PERMEABILITY POLYMER MORTAR
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摘要: 高强不锈钢绞线网-渗透性聚合砂浆加固技术是一项新型加固工艺,具有耐火、耐腐蚀、耐老化等优点。针对采用高强不锈钢绞线网-渗透性聚合砂浆加固的河北沧州某大桥,采用缩尺比例模型,对4根由该工艺加固的钢筋混凝土T型梁和1根对比梁的抗弯性能试验进行对比研究,分析加固梁抗弯承载力的影响因素及其破坏模式。在试验研究的基础上,提出此类加固梁的抗弯承载力计算公式。Abstract: Rehabilitation of RC members with stainless steel wire mesh and permeability polymer mortar is a new method ofstructural strengthening with the advantages of resistance to fire, corrosion and ageing. Experiments were conducted toinvestigate the flexural behavior of four strengthened RC T -beams and one comparative RC T -beam under different types ofloadings, the T -beamswere a reduced scale model of a bridge located in Cangzhou City of Hebei Province. It was analyzedthe influence factors of the strengthened T -beams. flexural bearing capacity and its failure modes. Based on the test results,the design formulae of flexural bearing capacity were proposed.
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金成勋,房敬律. 不锈钢铰线抗拉强度试验结果[M].北京:清华大学,2000. 金成勋,金成秀,房敬律. 渗透性聚合砂浆的评估[M].北京:清华大学,2000. 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,2000. JTGD 62-2004.公路钢筋混凝土及预应力混凝土桥涵设计规范[S]. 聂建国,王寒冰,张天申. 高强不锈钢铰线网-渗透性聚合砂浆抗弯加固的实验研究[J].建筑结构学报,2005,(02):1-9. 吴刚,安琳,吕志涛. 碳纤维布用于钢筋混凝土梁抗弯加固的试验研究[J].建筑结构,2000,(07):3-6. -
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