用“预应力度法”计算构件抗裂检验系数容许值

Calculating the Permissible Value of the Check Coefficient for Prestressed Concrete Crack Resistance Based on Degree of Prestress

该文对《冷拔钢丝预应力混凝土构件设计与施工规程》JGJ19 -92规定的构件抗裂检验容许值“γcr”的计算公式进行了讨论 ,为避免混淆概念 ,采用预应力度法推导出修正的“γcr”计算式。

This paper discusses the formulae in “Code of Design and Construction of Concrete Members Prestressed with Cold-Draw Wires'(JGJ19-92),which are used to calculate the permissible value for the check coefficient of the member crack resistance. In order to avoid the confusion in concept ,the paper deduces the correlation formula which is based on degree of prestress.