高性能砼桥梁的预应力损失分析  

Prestress Loss of High Performance Concrete Bridge

作　　者：王存江[1] 

机构地区：[1]河北冀通路桥建设有限公司,河北石家庄050091

出　　处：《交通标准化》2010年第13期217-219,共3页Communications Standardization

摘　　要：在预应力砼构件中,由于种种原因,预应力会损失掉一部分,总损失约占控制应力的30%左右。设计时必须先将其计算出来,得出构件中的有效预应力,进而确定构件各阶段的应力状态。长期观测得知,高性能砼构件的预应力损失要比普通强度砼的损失大。In prestress concrete components,there will be some loss of prestress due to various reasons,and that amounts to 30% of the control stress. It should be calculated out in designing,and elicit the effective prestress in components to help determine the stress state of components stages. It is known that the loss of high performance concrete components is more than that of low performance concrete components from long-term observation.

关 键 词：砼构件 预应力损失 应力状态 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]