【摘要】 对光纤 混凝土间的微观力学行为进行了分析。考虑了双接触面摩擦接触,通过试验确定了接触面力学参数;对光纤 混凝土复合体进行了三维非线性数值分析,得出光纤 混凝土复合体不同受载状况下微观应力应变分布状态及其接触面滑移状态,从理论上验证了光纤涂覆层对其传感灵敏度的影响及光纤布置方式的选择。更多还原

【Abstract】 The micro-mechanical behaviors of fiber-concrete complex were investigated,and 3-D nonlinear numerical analyses is perform,in which for the first time the frictional contact on both two contact surfaces is taken into account,and mechanical parameters on contact surface are determined by test.The microscopic stress and strain state in fiber-coating-concrete complex under different loading are presented,which prove the effect of coating on fiber sensing sensitivity and the selection of fiber layout means on mechanical theory.更多还原