纤维增强材料(简称FRP)已被广泛应用于钢筋混凝土结构的修复和补强。FRP与混凝土的粘结强度是一个重要的设计参数,一般通过单剪试验测得。该文基于内聚力模型(Cohesive Zone Model)进行了单剪试验的有限元模拟,采用三线性应力-张开位移...纤维增强材料(简称FRP)已被广泛应用于钢筋混凝土结构的修复和补强。FRP与混凝土的粘结强度是一个重要的设计参数,一般通过单剪试验测得。该文基于内聚力模型(Cohesive Zone Model)进行了单剪试验的有限元模拟,采用三线性应力-张开位移模型定义内聚单元本构关系,并对一些典型试验的荷载位移曲线进行参数拟合以确定相关参数,其值与文献吻合。进行了参数分析,得到了内聚参数对计算结果的影响规律,并给出了合理选取内聚参数的建议。展开更多
The preliminary design and parametric study of 1400 m partially earth-anchored cable-stayed bridge are described. Static per-formance of this new type of bridge is discussed. Compared with fully self-anchored cable-st...The preliminary design and parametric study of 1400 m partially earth-anchored cable-stayed bridge are described. Static per-formance of this new type of bridge is discussed. Compared with fully self-anchored cable-stayed bridge, its advantages in fin-ished state are summarized. Based on numerical calculation, effects of several structural parameters on static performance are presented.展开更多
文摘纤维增强材料(简称FRP)已被广泛应用于钢筋混凝土结构的修复和补强。FRP与混凝土的粘结强度是一个重要的设计参数,一般通过单剪试验测得。该文基于内聚力模型(Cohesive Zone Model)进行了单剪试验的有限元模拟,采用三线性应力-张开位移模型定义内聚单元本构关系,并对一些典型试验的荷载位移曲线进行参数拟合以确定相关参数,其值与文献吻合。进行了参数分析,得到了内聚参数对计算结果的影响规律,并给出了合理选取内聚参数的建议。
基金supported by the National Hi-Tech Research and Develop-ment Program of China ("863" Project) (Grant No. 2006AA11Z120)
文摘The preliminary design and parametric study of 1400 m partially earth-anchored cable-stayed bridge are described. Static per-formance of this new type of bridge is discussed. Compared with fully self-anchored cable-stayed bridge, its advantages in fin-ished state are summarized. Based on numerical calculation, effects of several structural parameters on static performance are presented.
