摘要
依据后张法预应力钢绞线张拉中摩擦损失产生的机理,对后张法预应力钢绞线理论伸长值的计算进行了推导,得到了更为精确的计算公式。同时,结合实际工程对该公式进行了验证,结果表明依据该公式得到的伸长量计算值与实测值吻合良好,误差不超过6%。
According to the principle of prestress-losses due to friction, this paper deduces the accurate formula for calculating the theoretical extension value of prestressing steel strand, and testifies the formula with a real engineering practice, as a result, the calculating values is largely in conformity with the actual results, the error no more than 6%.
出处
《筑路机械与施工机械化》
北大核心
2007年第1期50-52,共3页
Road Machinery & Construction Mechanization
关键词
后张
预应力
钢绞线
伸长值
post-tensioned
prestressing
steel strand
extension value
