摘要
针对预应力偏心受拉构件,结合现行混凝土规范方法推导裂缝宽度计算公式,并利用预应力筋对结构的两阶段工作原理推导出另一种表达方式的裂缝宽度计算公式。类似于预应力混凝土承载力公式,两种方法推导出的裂缝宽度计算公式也可以实现统一,并且后一方法简化了裂缝宽度验算的步骤,便于预应力混凝土构件的裂缝控制。
According to current code for design of concrete structures, the formula of crack width checking on eccentrically tensioned prestressed members was deduced. Meanwhile, another form of the formula of crack width checking was also deduced based on two-stage-working principle. Similar to the union of ultimate bending strength calculation formulas of prestressed members, the union of crack width checking formulas derived from the two methods was also realized. What＇ s more, the latter one simplified the process of crack width checking, making it easier for the crack control of prestressed concrete members.
出处
《工业建筑》
CSCD
北大核心
2009年第12期18-20,24,共4页
Industrial Construction
关键词
预应力
偏心受拉
裂缝宽度
规范公式
等效荷载
prestress
eccentric tension
crack width
code formula
equivalent load
