植筋混凝土压弯构件的恢复力特性

植筋技术是一种新的钢筋锚固技术，在解决新老混凝土连接、钢筋漏埋、错埋等钢筋生根问题中发挥着重要作用。被广泛应用于结构加固改造中，为研究植筋构件的延性和抗震性能，设计制作了两组六个钢筋混凝土压弯构件。一组为整体浇注的构件，一组为植筋构件，通过试验。对比分析了两组构件在反复周期荷载作用下的滞回曲线、骨架曲线、极限承载能力、极限变形能力与延性。并进行了理论分析，对比分析表明，在植筋锚固长度大于20D的情况下，植筋压弯构件的极限承载能力、极限变形能力和延性等主要力学指标都与整浇构件相当，植筋构件的抗震性能是可靠的。

Aseismatic Behavior of Adhesively Bonded RC Columns Under Repeated Loads

Adhesively bonded bars are a new technique of bare anchorage. It has been widely used in rehabilitation, renovation and repairs of concrete structures, as it s easy to anchor steel bare to concrete. In order to study the ductility and seismic behavior of RC members with bonded reinforcing bars, six concrete column specimens were cataloged into two groups to be tested, One group is adhesively bonded member, the other is not. The looped curves of specimens under repeated load were investigated. From the curves, the ultimate carrying capacity, deflection capability and ductility of specimens were compared and analyzed. Results show that concrete columns with adhesively bonded bars which anchorage length it. more than 20D(bar' diameter), have a good deformation capability and ductility. Under repeated loads, the seismic behavior of concrete columns is reliable.