基于壁厚比变化下的混凝土箱型柱抗震性能的试验研究

Experimental Study on the Seismic Performance of Concrete Box Column Based on the Change of Wall Thickness Ratio

钢筋混凝土箱型柱由于其闭合截面的特性,使其具有良好的空间受力性能,因而被广泛采用。为了探究截面壁厚比变化对箱型柱抗震性能的影响,本文设计了四个钢筋混凝土箱型柱试件进行低周反复加载试验,通过对试验数据分析和理论分析得出结论:随着壁厚比的增加,箱型柱的承载力得到提高,抗震耗能能力得到有效的提升,但随着初始刚度的提升,其延性略有降低;翼缘壁厚比对抗震性能的影响大于腹板壁厚比。

Reinforced concrete box column is widely used because of its closed section and good spatial me-chanical performance.To explore section wall thickness ratio on seismic performance of box column,this paper designed the four-reinforced concrete box column under low reversed cyclic loading test specimens and drew the conclusion:with the increase of thickness ratio,the bearing capacity of box column was improved besides the ascension of the seismic energy dissipation capacity effectively,but along with the initial stiffness of ascension,the ductility was slightly lower;The effect of flange wall thickness ratio on seismic performance is greater than that of web wall thickness ratio.