钢骨混凝土T形截面短柱力学性能的试验研究  

Experimental study on the mechanical property of steel reinforced concrete short columns of t-shaped cross-section

作　　者：李哲[1] 张小锋 郭增玉[1] 徐凯[3] 

机构地区：[1]西安理工大学,陕西西安710048 [2]张家港市建筑设计研究院有限公司,江苏张家港215600 [3]天津市园林规划设计院,天津300042

出　　处：《土木工程学报》2007年第1期1-5,共5页China Civil Engineering Journal

摘　　要：通过试验研究钢骨混凝土T形截面短柱的抗剪性能和抗震性能。制作14根钢骨混凝土T形截面短柱和2根钢筋混凝土T形截面短柱,主要考虑剪跨比、轴压力系数、体积配箍率及配骨率等参数对T形短柱抗剪承载力和位移延性的影响,提出钢骨混凝土T形截面短柱抗剪承载力计算公式,计算值与试验结果吻合较好。试验结果表明,钢筋混凝土T形截面短柱经加入钢骨抗剪承载力和位移延性均有较大程度的提高,且随配骨率、体积配箍率的增大而增大;另外,钢骨混凝土T形截面短柱的位移延性随轴压力系数的增大而降低,随剪跨比的增大而提高。研究成果为钢骨T形短柱应用于抗震烈度较高地区有一定的参考价值。This study on the mechanical performance of Steel Reinforced Concrete Short Columns of T-Shaped Crosssection has been carried out through fourteen tests. The focus is the effects of axial pressure ratio （nt） , stirrup ratio （ρv）, shear span ratio （λ） and steel ratio （ρss） on the shear strength and the anti-seismic performance of SRCTSSC. It can be concluded that the shear strength of SRCTSSC increases with the increases of nt and p, , and that the shear strength of SRCTSSC decreases with increase of λ. The shear resistance formula for T-shaped columns is derived, and the calculated results are consistent with those of the tests. The hysteretic loops of the SRCTSSC are full, the hysteretic behavior is improved, and the displacement ductility increases with increases of ρv and ρss, decreases with the increase of nt, with the degree of variation in high axial pressure ratio being larger than in low axial pressure ratio. If steel bars are added, the shear strength and displacement ductility of SRCTSSC increases significantly, and the capacity of energy dissipation is also enhanced.

关 键 词：钢骨混凝土 T形截面短柱 位移延性 抗剪承载力 

分 类 号：TU375.1[建筑科学—结构工程]