CAJ | 학술논문

玻璃钢(FRP)筋防腐混凝土是一种强度高、全方位耐腐蚀的新型工程材料,具有十分广泛的应用前景.本文先对防腐混凝土梁采用四点弯曲试验方法,对FRP筋加强混凝土梁的弯曲长期力学特性进行了试验研究与分析,得到了梁在不同荷载水平作用下的蠕变曲线.结果表明,FRP筋不仅提高了防腐混凝土梁的初始刚度和强度,且明显降低了梁的蠕变变形.最后,运用最小二乘法确定蠕变模型参数,分别建立了防腐混凝土粱和FRP筋加强防腐混凝土梁的弯曲蠕变幂律模型,为估计材料的长期力学性能提供依据,对FRP筋防腐混凝土结构设计具有重要的价值.
파리강(FRP)근방부혼응토시일충강도고、전방위내부식적신형공정재료,구유십분엄범적응용전경.본문선대방부혼응토량채용사점만곡시험방법,대FRP근가강혼응토량적만곡장기역학특성진행료시험연구여분석,득도료량재불동하재수평작용하적연변곡선.결과표명,FRP근불부제고료방부혼응토량적초시강도화강도,차명현강저료량적연변변형.최후,운용최소이승법학정연변모형삼수,분별건립료방부혼응토량화FRP근가강방부혼응토량적만곡연변멱률모형,위고계재료적장기역학성능제공의거,대FRP근방부혼응토결구설계구유중요적개치.
FRP rural resin concrete which has extensive application prospect is a kind of anti-corrosive new en-gineering material. Although it's stronger in compression than cementitious concrete, its tension behavior is weak, the reinforcement of polymer concrete beams in the tension zone with puhruded profiles made of resin and glass fibers are a good compromise between strength and stiffness. In this paper, firstly the experience has performed about the bending and creep characteristic of non-FRP reinforced furan resin concrete beam and FRP reinforced furan concrete beam, the creep curves are gained of the beams under different loads by four-point bending tests method, analysis is carried on the viscoelasticity nature, the result shows that FRP not only enhances the furan resin concrete beam's ini-tial stiffness and strength, but also obviously reduces the creep strain of the beam. Secondly the creep model varia-bles are determined through the least square method, the bending creep power law model are separately built of non-FRP reinforced furan resin concrete beam and FRP reinforced furan concrete beam,which is the basis of estimation of material's long term mechanics performance, and also has important project practical value to the FRP furan resin concrete structure design.