钢筋混凝土梁基于位移的变形能力设计方法  

Displacement-based deformation capacity design method of reinforced concrete beams

作　　者：钱稼茹[1] 徐福江[1] 

机构地区：[1]清华大学结构工程与振动教育部重点实验室土木工程系,北京100084

出　　处：《四川建筑科学研究》2007年第2期1-3,共3页Sichuan Building Science

基　　金：北京市教委与北京市自然科学基金联合重点资助项目(kz200410005003)

摘　　要：建立了钢筋混凝土(RC)梁屈服位移角和极限位移角的计算公式,对154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梁的屈服位移角与受拉钢筋屈服强度、截面高度有关;RC梁的极限位移角与配箍特征值、剪跨比和相对受压区高度等有关,在此基础上,提出了RC梁基于位移的变形能力设计方法。A model has been developed to predict the drift ratios of reinforced concrete beams at yielding and at ultimate respectively, and a set of test data is used for regression analysis of the model, and expressions for the drift ratio of RC beams are evaluated. The drift ratio of RC beams at yielding is related to the yielding strength of longitudinal bars and depth of beam cross section. The drift ratio of RC beams at ultimate is related to stirrup characteristic value, shear-span ratio and relative compression depth. According to the expression of drift of RC beam at ultimate, displacement-based deformation capacity design method of RC beams is proposed.

关 键 词：钢筋混凝土梁 基于位移抗震设计 屈服位移角 极限位移角 变形能力 

分 类 号：TU375.1[建筑科学—结构工程]