配置预应力混凝土芯棒的轴拉构件裂缝宽度试验研究  

EXPERIMENTAL STUDY OF CRACK WIDTH OF ANXIAL TENSION STRUCTURAL MEMBER ON INCLUDING PRESTRESSED CONCRETE MANDRIL

作　　者：吴方伯[1] 袁来帮[1] 

机构地区：[1]湖南大学土木工程学院,长沙410082

出　　处：《建筑技术开发》2006年第5期13-16,共4页Building Technology Development

摘　　要：通过24根预应力混凝土芯棒构件及对比构件的轴拉试验研究及分析，重点研究了预应力混凝土芯棒在控制裂缝中的作用，试验研究表明，预应力混凝土芯棒具有良好的抗裂性能，用统计分析的方法求得了预应力芯棒等效为钢筋的等效系数β，提出了预应力芯棒轴拉构件裂缝间距及其裂缝宽度的计算公式。Based on 24 prestressed concrete mandril structural members and contrastive members anxial tension experiment and analyse, this paper studies the function of prestressed concrect mandril in controlling crack. The result of experiment shows that the prestressed concrect mandril has good performance of controlling crack. Though the statistic method, this paper proposes the equivalent coefficient β and the formulas for calculating the crack space between and crack width of prestressed concrete mandril in anxial tension experiment.

关 键 词：预应力混凝土芯棒 轴拉 裂缝间距 裂缝宽度 等效系数 

分 类 号：TU378[建筑科学—结构工程]