预应力砼组合箱梁施工控制与缺陷防治

Construction Control of Prestressed Concrete Combination Box Beam and Quality Control Mersures

主要针对312国道镇江段香草河大桥和汤龙公路大桥采用先简支后结构连续部分预应力砼组合箱梁的施工中,在底板制作、钢筋绑扎、混凝土浇筑、预应力张拉、箱梁安装、组合体系转换等方面所采取的质量控制措施,本文分析对比了两座桥施工中好的做法及出现的质量缺陷,提出一些防治、处理措施及建议。

Based on the practice of first simple beam and later continous prestressed concrete combination box in the constructions of Xiangcao river bridge and Tanglong bridge, and analyzing the quality problems in the constructions, this paper puts forward some suggestions and mensures concerning plate making, steel fixing, Concrete pouring, box beam installation and system concerting, etc.