摘要
通过对某预应力连续箱梁底板崩裂问题的分析,阐述了设计和施工中防崩钢筋配置不当和预应力束局部凸起、位移是引起桥梁底板混凝土崩裂破坏的主要原因;针对出现崩裂的部位和原因,对该桥进行了修复与加固;通过桥梁荷载试验,对修复效果进行了有效的评价。
Through the analysis of bursting cracks in box girder bottom slabs of continuous pre-stressed bridges, the main causes of bursting crack destroy that were the unreasonable configuration of the anti-collapse steel bar, the gibbosity and displacement of the pre-stressed beam in design and construction were explored. The bridge was repaired and reinforced.After the load test, the effects of repair was effectively evaluated.
出处
《三明学院学报》
2016年第2期88-94,共7页
Journal of Sanming University
基金
三明学院科研基金项目(B201310/Q)
福建省中青年教师教育科研项目(JA14294
JA14296)
关键词
连续箱梁
底板崩裂
曲率效应
荷载试验
continuous box girder
bursting crack in bottom slab
curvature effect
load test
