体外预应力加固体系的预应力损失估算  

The estimating of the external prestressing loss in the bridge strengthen system

作　　者：孔保林[1] 

机构地区：[1]邯郸市交通局公路勘察设计院,河北邯郸056002

出　　处：《河北建筑科技学院学报》2002年第3期27-29,共3页Journal of Hebei Institute of Architectural Science & Technology

摘　　要：用体外预应力进行桥梁加固的预应力钢筋构造形式及施工方法与常规的体内有粘结或无粘结预应力钢筋有较大差别 ,因此 ,其预应力损失的计算方法也有很大差别。本文利用结构设计原理中的一些理论 ,对此进行详细的分析 ,以保证加固体系的预应力储备 。The difference of prestressing steels' structure and construction method between external prestressing using in bridge strengthen system and traditional internal prestressing with cohere or no-cohere is huge So,the method of calculate prestressing loss is difference Based on some theory in the principle of construction design,many questions related to the calculating method of prestressing loss is discussed This calculate method can assurance the reserve of prestressing and the result is very ideal

关 键 词：体外预应力加固体系 预应力损失 预应力钢筋 应变 桥梁加固 摩阻力 施工方法 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]