后张法预应力箱梁起拱度异常的原因分析

Causes analysis on abnormal arching degree of prestressed box girder with post-tension method

结合多年来后张法预应力箱梁的监管经验,对箱梁起拱度太小和太大两种异常情况的原因进行了分析,并根据相关技术规范,提出了相应的预防措施和解决办法,从而使起拱度得到有效控制。

Combining with many years＇ supervising experiences on prestressed box girder with post-tension method,it analyzes causes of too small and too large box girder arching degree,and puts forward corresponding preventive measures and solutions according to relevant technical norms,so as to effectively control arching degree.