摘要
将自行研究配制的轻质微膨胀混凝土应用于拱肋的加固。推导出了膨胀剂作用下组合截面应力重分布计算公式,并考虑收缩、徐变的效应,对加固后的拱圈应力进行了计算,并与实测值进行了比较。此外,通过荷载试验检验,说明轻质混凝土完全可用于桥梁的主要承重结构。
In this paper, lightweight light-expansion concrete is applied to the strengthening of arch bridges. Stress formula of combination section is account, and stress of key sections calculated aft actual values measured with strain gauge, it shows deduced, the effect of shrinkage and creep taken er strenthening. that the fomula light-expansion concrete is capable of applying to main structure of By compareing calculate values is right. It is conclude that lightw bridges. into with eight
出处
《公路》
北大核心
2005年第12期27-32,共6页
Highway
关键词
轻质微膨胀混凝土
拱肋加固
膨胀剂作用
收缩徐变
应力
lightweight light-expansion concrete
strengthening of arch rib
effect of expansion agent
shrinkage and creep
stress
