低周反复荷载下无机锚固料后锚固压弯构件试验研究

为了研究无机锚固料植筋构件的抗震性能,以轴压比（0．2和0．4）、锚固长度（15D和20D）为控制参数设计了8个钢筋混凝土压弯构件．试验过程中试件的两端加轴向荷载,节点处施加往复荷载,通过试验对比分析了各构件在反复荷载下的极限承载能力、极限变形能力与耗能能力．结果表明,无机锚固料后锚固压弯构件在低周反复荷载作用下的极限承载能力与整浇构件理论计算值相近,但植筋深度为15D的压弯构件的延性比和能量耗散系数较低,植筋深度为20D的构件的延性比大且耗能能力高,满足抗震性能的要求．

Test and Study of Post Anchored RC Column Members with Inorganic Anchoring Material under Cyclic Load

To study the seismic behavior of post anchored RC members with inorganic anchoring materials,such as ductility,load carrying capacity,energy dissipation,and collapse state,etc.,eight RC column joint specimens are designed and tested under cyclic load.Influencing factors such as axial compression ratio,post-anchored length of steel bars which affects the seismic behavior of post anchored members,have been selected.In the test,specimens are subjected to a combination of constant axial load and transversely cyclic load at the joint.The results show that the load carrying capacity of the anchorage members is similar to the theoretical value of integral member.Ductility and energy-dissipating capacity of specimens with post-anchored length of 15D are low,while those of specimens with 20D are higher and satisty the requirement of seismic behavior.