摘要
目前微膨胀混凝土在钢管拱桥中广泛应用。介绍利用封闭钢筒里灌装微膨胀混凝土试验来模拟实际中桥梁钢管内混凝土的膨胀情况。研究钢筒的周向应变和轴向应变反算微膨胀混凝土的膨胀率和自应力的计算方法。
Presently, expansion concrete is widely applied to arch-steel-tube-bridge. Through the study of micro-expand concrete in the closed steel tube, the paper tries to make out the actual way how the concrete expands in steel tube. The dilate rate and prestressing force of micro-expand concrete was achieved through the calculation of circle-strain and axes-strain in steel tube, which was proved to be effective in study.
出处
《交通科技》
2005年第6期86-87,96,共3页
Transportation Science & Technology
基金
湖北省交通厅科技项目(鄂交科教2003-570)资助
关键词
微膨胀
膨胀率
钢管混凝土拱桥
micro-expand concrete
dilate rate
arch steel tube bridge
