Enhancement of Earthquake Resistance of Resistance of Reinforced Concrete Structures

提高钢筋混凝土结构的抗震性能刻不容缓。研究和预测钢筋混凝土结构的弹塑性性能，并为此开发抗震系统是必不可少的。研究结果如下：(1)采用不同剪跨深度比、配筋率和压应力比的钢筋混凝土柱试件进行了在线混合试验。因此，确定了JSCE混凝土标准规范中抗震设计的概念是充分的。(2)建立了一种仅利用材料特性分析预测钢筋混凝土柱地震反应的方法。该结果与在线混合试验结果吻合较好。(3)在拟动力实验中，成功研制了一套可视地震反应模拟系统。(4)研制成功小型振动台和小型伪动力试验装置。用这两种仪器对小块砂浆进行了试验，并与计算机分析结果进行了比较。

Enhancement of earthquake resistance of reinforced concrete structures is urgent. It is essential to investigate and predict elasto-plastic behavior of reinforced concrete structures as well as to develop seismic proof systems for this purpose.The results obtained from this research are follows :(1) Online Hybrid tests were performed using reinforced concrete column specimens with different shear span depth ratio, reinforcement ratio and compressive stress ratio. As a result, the concept of seismic design in JSCE's concrete standard specification was ascertained to be adequate.(2) A method of analytical prediction of the earthquake response of a reinforced concrete column was established by only utilizing material characteristics. This result coincided well to the online hybrid test result.(3) A visual seismic response simulating system was successfully developed using video recorder in pseudo dynamic experiment.(4) Small size shake table and small size pseudo dynamic test apparatus were successfully developed. Small reinforced mortar specimens were tested by both apparatuses and compared with computer analysis.