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中国工程界对预应力混凝土T梁负弯矩钢束的锚固方式认识尚不统一,通用图设计成果有较大差异,在学习和总结国内外装配式预应力混凝土T梁负弯矩钢束锚固方式设计成果的基础上,通过对实际工程进行调研考察,对比出桥面上浅埋、深埋和桥面下齿板锚固负弯矩钢束的优缺点,确定了标准化设计负弯矩采用桥面下设齿板的锚固方式,并优化齿板钢筋布置,以期达到采用适宜的结构构造形式来保证桥梁后期耐久性能的目的。
Chinese engineering knowledge of prestressed concrete T beam negative moment beam anchoring methods are not uniform understanding of the general design results are quite different, in the study and summary of prestressed concrete T-beam at home and abroad negative beam bending steel beam anchorage Based on the results of the design and mode design, through the investigation and study of the actual project, the advantages and disadvantages of the negative bending moment steel beams anchored on the deck under shallow depth, deep depth and bridge deck are contrasted, Under the surface of the tooth plate anchoring mode, and optimize the tooth plate reinforcement arrangement, in order to achieve the purpose of using appropriate structural forms to ensure the late durability of the bridge.