钢筋混凝土连梁基于位移的变形能力设计方法

Displacement-based Deformation Capacity Design Method of Reinforced Concrete Coupling Beams

为对钢筋混凝土(RC)连梁进行基于位移的抗震设计,建立了RC连梁屈服位移角和极限位移角的计算公式,对62个试件的试验数据进行分析,得到了计算公式的相关参数。RC连梁的屈服位移角与受拉钢筋屈服强度、跨高比有关;RC连梁的极限位移角与面积配箍特征值、跨高比和纵筋配筋率等有关。在此基础上,提出了RC连梁基于位移的变形能力设计方法。

To perform displacement - based seismic design of reinforced concrete (RC) coupling beams,a model has been developed to predict the drift ratios of reinforced concrete coupling beams at yielding and at ultimate respectively. A set of test data is used for regression analysis of the model,and expressions for the drift ratio of RC coupling beams are evaluated.The drift ratio of RC coupling beams at yielding is related to the yielding strength of longitudinal bars and span - to - depth ratio,and at ultimate it is related to area stirrup characteristic value,span - to - depth ratio and longitudinal reinforcement ratio.A displacement - based deformation capacity design method of RC coupling beams is proposed.