在役预应力连续梁桥有效预应力估算

The effective pre-stress estimation of in-service pre-stressed continuous beam bridge

结合太旧高速武宿立交主线桥维修工程项目,通过预应力损失试算估算现存预应力,较好的解决了在役预应力连续梁桥有效预应力检测难的问题,并指出在加固现役预应力连续梁桥过程中,对主梁进行分析计算时,需估算原桥的预应力损失程度。

Combining with the repair project of Taiyuan-Jiuguan highway Wusu overpass mainline bridge, through the pre-stress loss trialed and estimated the extant pre-stressed, better solved the problems of effective pre-stress detection difficult of in-service pre-stressed continuous beam bridge, and pointed out that in the process of reinforcement of in-service pre-stressed continuous beam bridge, made analysis and calculation to main beam, need to estimate the pre-stress loss of original bridge.