冻融循环作用下梁抗剪性能分析

Analysis on shear performance of beam under freeze-thaw cycle

文中通过冻融循环试验,观测不同冻融程度下构件状态,分析质量、动弹性模量、抗压强度、抗拉强度变化过程。根据45根钢筋混凝土梁在不同冻融循环程度、箍筋间距条件的下静载荷试验数据,分析总结出构件的破坏形态、挠度、钢筋应变、开裂及极限荷载的变化规律。

By freezing-thawing cycle test,the state of components under different degrees of freezing-thawing was observed,and the changing process of mass,dynamic elastic modulus,compressive strength and tensile strength was analyzed.According to the static load test data of 45 reinforced concrete beams under different freeze-thaw cycles and stirrup spacing conditions,the failure modes,deflections,reinforcement strains,cracking and ultimate loads of the members are analyzed and summarized.