摘要
通过两种、四榀不同剪跨比的RC双肢柱在恒定垂直偏心荷载作用下的拟动力试验研究和理论分析,考虑了RC双肢柱在(不同烈度)地震荷载作用下的动力反应全过程,即由弹性进入塑性过程中裂缝出现、刚度变化及其破坏状态等情况,为RC双肢柱抗震研究提供了可靠的数据;验证了RC双肢柱设计规范TJ10-74弹塑性简化计算方法公式的正确性。在此基础上提出了新的强度及变形实用计算公式;探讨了腹杆形式、数量以及节点的合理设计对双肢柱抗震性能的影响;采用杆系模型、Tri-Linear三线形恢复力形式及增量法进行了平腹杆双肢柱弹塑性分析,并将其分析结果与试验结果进行了对比。
Based on the imitating dynamic test and theoretical analysis of RC doub-
le-limb-column (RCDLC) specimens which are of different shear span ratio, the whole
dynamic reaction process of the specimens is studied under the constant vertical eccentric
loads and different intensity earthquake force, and some reliable data about the
aseismatic research of RCDLC are provided. The reasonableness of the elastoplastic
simple calculating formulas of RCDLC in the code TJ10-74 is verified, a set of new use-
ful calculating formulas on strength and deflection of RCDLC is suggested at the base of
this mentioned above. The various factors which affect on the ascismatic behaviour of
RCDLC are discussed.
关键词
钢筋混凝土
双肢柱
试验
抗震
reinforced concrete
latticed columns
earthquake resistant behavior
shear spans
eccentric loads
elastic-plastic analysis/ whole boby restoring force
