预制箱梁钢绞线理论伸长值计算及现场施工中的量测

摘要

Combined with construction project of prestress construction of prefabricated box beam, the paper introduces the calculation method of steel strand theoretical elongation value and measurement, and shrinkage losses.%　　本文主要结合预制箱梁预应力施工工程实例，介绍预应力施工中钢绞线理论伸长值的分段计算方法，现场施工中钢绞线伸长量的量测与回缩损失。